COMMERCIAL GAS WATER HEATERS
Instruction Manual
PRINTED 0412 318628-004
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.


Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
MODELS SUF 130 300, 100/101 Series
SUF 130 400/500, 104/101 Series
INSTALLATION - OPERATION - SERVICE
- MAINTENANCE - LIMITED WARRANTY


WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
Do not try to light any appliance.
Do not touch any electrical switch; do
not use any phone in your building.
Immediately call your gas supplier
from a neighbors phone. Follow the
gas suppliers instructions.
If you cannot reach your gas supplier,
call the fire department.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
ANSI/NSF-5

2
VENTING INSTALLATION 21
General Venting Information 21
 21
Venting Requirements 22
 23
 23
 23
 24
 26
 
 28
 29
Venting Arrangements 32
 34
 35
WATER HEATER INSTALLATION 36
 36
Supply Gas Line Installation 
 39
 40
 40
TEMPERATURE REGULATION 41
 41
 41
 42
 42
 42
 45
START UP 50
Prior to Start up 50
Initial Start Up 50
 52
 52
LIGHTING THE WATER HEATER 53

400 & 500 101 53
Lighting & Operation Label - SUF 130 400 & 500 104 54
TROUBLESHOOTING 55
 55
 55
 56
Operational Problems 
 58
 61
General 61
 61
 61
Filling the Water Heater 62
 62
 62
 63
 63
Temperature-Pressure Relief Valve Test 63
Vent System 63
DIAGRAMS 64
 64
SUF 130 300 Wiring Diagram 65
 66
 
Water Piping Diagrams 68
 
TABLE OF CONTENTS
 3
APPROVALS 3
 4
 4
 4
 4
 6
 6
 6
 6
Preparing for the Installation 6


 8
 9
 10
Rough In Dimensions 10
 10
 10
 10
 11
 12
 12
 12
 12
Insulation Blankets 12
INSTALLATION REQUIREMENTS 13
Gas Pressure Requirements 13
Supply Gas Line 13
Supply Gas Regulator 13
 13
Mixing Valves 14
 14
 14
Thermal Expansion 14
Temperature-Pressure Relief Valve 15
 16
 16
 16
Air Requirements 
 
 
 18
 18
 18
 18
 19
 19
   
 20
 20
 20
 20
Signage 20
 20
Exemptions 20

 20

 20
3
SAFE INSTALLATION, USE AND SERVICE







                



DANGER
WARNING
CAUTION
CAUTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
will result in injury or death.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in injury or death.
CAUTION indicates a potentially hazardous
situation which, if not avoided, could result in
minor or moderate injury.
CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could result in
property damage.
APPROVALS
ANSI/NSF-5

4
PRECAUTIONS
DO NOT USE THIS WATER HEATER

    


         

 
 
 
GROUNDING INSTRUCTIONS
         
        


         

          

HYDROGEN GAS FLAMMABLE
Explosion Hazard
Flammable hydrogen gases
may be present.
Keep all ignition sources away
from faucet when turning on
hot water.
          
             
         

    



 THERE SHOULD BE NO SMOKING

GENERAL SAFETY INFORMATION
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Feel water before bathing or
showering.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Explosion Hazard
Overheated water can cause
water tank explosion.
Properly sized temperature and
pressure relief valve must be
installed in the opening provided.
Verify the power to the water heater is turned off before performing any service procedures.
Improper installation, use and service may result
in property damage.
Do not operate water heater if flood damaged.
Inspect and anode rods regularly, replace if damaged.
Install in location with drainage.
Fill tank with water before operation.
Properly sized thermal expansion tanks are required on all
closed water systems.
Refer to this manual for installation and service.
CAUTION
5
GENERAL SAFETY INFORMATION
Fire Hazard
Do not install water heater on
carpeted floor.
Do not operate water heater if
flood damaged.
For continued protection against
risk of fire:
Fire or Explosion Hazard
Read instruction manual before
installing, using or servicing
water heater.
Avoid all ignition sources if you smell gas.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use.
Maintain required clearances to combustibles.
Do not expose water heater controls to excessive gas
pressure.
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Gas
Property Damage Hazard
All water heaters eventually leak.
Do not install without adequate drainage.
CAUTION
Fire and Explosion Hazard
Leak test before placing the
water heater in operation.
Disconnect gas piping and main
gas shutoff valve before leak
testing.
Install sediment trap in
accordance with NFPA 54.
Use joint compound or Teflon tape
compatible with propane gas.
Fire and Explosion Hazard
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
Excessive gas pressure to gas valve can
cause serious injury or death.
Do not use water heater with any gas
other than the gas shown on the rating
label.
Turn off power to the water heater
before performing any service.
Electrical Shock Hazard
Label all wires prior to disconnecting
when performing service. Wiring errors
can cause improper and dangerous
operation.
Verify proper operation after servicing.
Failure to follow these instructions can
result in personal injury or death.
Jumping out control circuits or components can
result in property damage, personal injury or death.
Service should only be performed by a qualified service
agent using proper test equipment.
Altering the water heater controls and/or wiring in any way
could result in permanent damage to the controls or water
heater and is not covered under the limited warranty.
Any bypass or alteration of the water
heater controls and/or wiring will result
in voiding the appliance warranty.
Altering the water heater controls and/or wiring in any way
could result in altering the ignition sequence allowing gas to
flow to the main burner before the hot surface igniter is at
ignition temperature causing delayed ignition which can
cause a fire or explosion.
6
        

ABBREVIATIONS USED

 
 
 
 
 
 
 
QUALIFICATIONS
QUALIFIED INSTALLER OR SERVICE AGENCY
        
          



ANSI Z223.1 2006 Sec. 3.3.83:    


          





        
            
   


ICOMM™ & BACNET COMPATIBLE
        
      
       
       

      
        


      

PREPARING FOR THE INSTALLATION
 

       




          
         

INTRODUCTION

         
         

       
        








     
      

NOTE:        

            


 

        
      


 



        
      


      

           
         
 




      



 

     
        


        



BASIC OPERATION
          
 
          
          

        


FEATURES AND COMPONENTS
BLOWER
BURNER
ASSEMBLY
MAIN
BURNER
(radial design)
HEAT
EXCHANGER
INTAKE AIR
(combustion air)
CONNECTION
4 INCH PVC
HELICAL
COIL
VENT (exhaust)
OUTLET
Figure 1
BLOWER/BURNER ASSEMBLY DETAIL
HOT SURFACE
IGNITER
COMBUSTION
BLOWER
FLAME
SENSOR
MAIN
BURNER
(radial design)
BLOWER
FLANGE
INTAKE AIR
(combustion air)
CONNECTION
4 INCH PVC
Figure 2
Hot Surface Igniter
    
          


NOTE:

          





Flame Sensor



         

8

       
  
        
         





       
      
         



    

   



         
        





        

TOP VIEW
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FRONT
TOP VIEW COMPONENTS
 
         
       
  

       


       
        
       

      

 
        

         


 
         

 
         
      




Figure 3
9
       



    



   






        
    

SIDE VIEWS
       

 
        
        

 
      

 


 
 
          

    
10
8
16
2
7
6
5
11
12
17
18
13
14
15
RIGHT SIDE
11
12
14
15
13
3
2
1
4
5
6
7
8
9
10
LEFT SIDE
Figure 4
Figure 5
10
STORAGE CAPACITIES
TABLE 2

 Liters
ASME  ASME 
SUF-130-300 130  492 
SUF-130-400 130  492 
SUF-130-500 130  492 
Figure 6


ROUGH IN DIMENSIONS
GAS LINE CONNECTION SIZE
TABLE 1
MODEL SERIES NATURAL GAS PROPANE GAS
SUF 130 300 100/101  
SUF 130 400 101/104  
SUF 130 500 101/104  



TABLE 3
U. S. GALLONS/HR & LITERS/HR AT TEMPERATURE RISE INDICATED

Type of
Gas
Input              
Btu/hr kW              
SUF 130 300
Natural
 88
GPH
 1164  699 582 499 436 388 349 318 291 269 250
Propane LPH
6610 4406 3304 2644 2203 1888 1652 1469 1322 1201 1102  945
SUF 130 400
Natural
 
GPH
2328 1552 1164 931  665 582  466 423 388 359 332
Propane LPH
8813  4406 3525 2938 2518 2203 1958  1602 1469 1356 1259
SUF 130 500
Natural
 146
GPH
 1919 1439 1151 959 822  640  523 480 443 411
Propane LPH
10894   4358 3631 3113  2421  1981 1816  1556

INSTALLATION CONSIDERATIONS
35°
20°
70°
18°
45°
45°
CLEANOUT
T & P VALVE
GAS
*1 1/2” NPT
WATER
OUTLET
FRONT
TOP
DRAIN VALVE
INTAKE AIR
4 INCH PVC
VENT
4 INCH
PVC
FRONTBACK
CLEANOUT
T & P
3/4” NPT
DRAIN
1 1/2” NPT
WATER INLET
4” PVC
VENT CONNECTION
(exhaust elbow)
4” PVC
INTAKE AIR
CONNECTION
1 1/4” SUPPLY GAS
CONNECTION
33.12” (84.1 cm)
OUTSIDE
DIAMETER
4.86”
(12.34 cm)
50.77”
(129 cm)
75.50”
(191.8 cm)
69”
(175.3 cm)
69”
(175.3 cm)
12”
(30.5 cm)
* Center line of water outlet on top of the water heater is 7 inches from the front edge of the water heater.
WATER
OUTLET
HEIGHT
63 INCHES
(160 cm)
CONDENSATE
DRAIN CONNECTION
1/2 INCH PVC
RECOVERY CAPACITIES
11
LOCATING THE WATER HEATER
         

    

Property Damage Hazard
All water heaters eventually leak.
Do not install without adequate drainage.
CAUTION


 
 

 

 
 

     




 

 

 


 
 

         
       

         
        
        


Fire or Explosion Hazard
Read instruction manual before
installing, using or servicing
water heater.
Avoid all ignition sources if you smell gas.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use.
Maintain required clearances to combustibles.
Do not expose water heater controls to excessive gas
pressure.


        






CLEARANCE TO COMBUSTIBLE MATERIALS
         

    


NOTE: 

TOP VIEW
0
0
0
ALCOVE
FRONT VIEW
CLEARANCES TO COMBUSTIBLE
AND NON COMBUSTIBLE
CONSTRUCTION MATERIALS
WATER
HEATER
FRONT
TOP COVER
FRONT
Figure 7
SERVICE CLEARANCE

         


          

INTAKE AIR AND VENT PIPE CLEARANCES




12
EXTENDED VENT TERMINATIONS





           
         





OPTIONAL CONCENTRIC TERMINATIONS



         
          

         
  

      


 
 
HARD WATER
        
        


         

CIRCULATION PUMPS






         

       


      
        

INSULATION BLANKETS
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Gas

          

     



         
      
        



 DO NOT

 DO NOT

 DO NOT
 DO NOT

 DO


 DO

13

        

 


POWER SUPPLY
        




POWER FLUCTUATIONS AND ELECTRICAL NOISE
        






        



NOTE:
 

DEDICATED POWER WIRING AND BREAKERS
       


POLARITY SENSITIVE

       
        






TABLE 4
MODEL
*MANIFOLD PRESSURE  
NATURAL GAS PROPANE GAS NATURAL GAS PROPANE GAS NATURAL GAS PROPANE GAS
SUF 130 300
     
SUF 130 400
N/A     
SUF 130 500
N/A     








SUPPLY GAS LINE



DOES NOT
           

  

DO NOT



MINIMUM SUPPLY GAS LINE SIZE
TABLE 5
MODEL *NATURAL GAS PROPANE GAS
SUF 130 300  
SUF 130 400  
† SUF 130 500  





SUPPLY GAS REGULATOR
        
            
          



 

 


 

        
INSTALLATION REQUIREMENTS
GAS PRESSURE REQUIREMENTS
14
HOT WATER
OUTLET
TO TANK
INLET
CHECK
VALVE
MIXING
VALVE
COLD
WATER
INLET
TEMPERED WATER
OUTLET
12” TO 15”
(30-38 cm)
CHECK
VALVE
Figure 8


          



           



NOTE:


CLOSED WATER SYSTEMS
       
         
       


THERMAL EXPANSION


         


        
  
        



        
         
   



MIXING VALVES
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Feel water before bathing or
showering.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.

   
       



         
         
        
      
          





  

  
        

TABLE 6
Water Temperature


 Nearly instantaneous
 Nearly instantaneous
 
 
 
 
 More than 5 minutes
DISHWASHING MACHINES
      








15
Water Damage Hazard
Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
CAUTION
T&P Valve Discharge Pipe Requirements:
 Shall not be smaller in size than the outlet pipe size of the

 
 
 
 


 



 

Burn hazard.
Hot water discharge.
Keep clear of Temperature-
Pressure Relief Valve
discharge outlet.
The Temperature-Pressure Relief Valve must be manually
          
 
       
         
         
         

     


NOTE: The purpose of a Temperature-Pressure Relief Valve is

           


       



          

TEMPERATURE-PRESSURE RELIEF VALVE
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
         
     


         
        

         
         
        
          
        



NOTE:


  
        




 
       



         






          

          
           

       


16
CONDENSATE DRAIN
        
          


  
        
 
           
          

        
          
       
  

NOTE: 


CONDENSATE DRAIN
LINE - FIELD INSTALLED
CONDENSATE DRAIN
LINE CONNECTION
EXHAUST (VENT)
ELBOW
BUILDING
DRAIN
FACTORY INSTALLED
CONDENSATE TRAP
CLEANOUT
PLUG IS
REMOVED
TO CLEAR
DRAIN
Figure 9
CONDENSATE DRAIN WATER TRAP
Ensure a functioning water trap is
installed in the condensate drain.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Gas
         
          
         
 

CONDENSATE PH LEVEL
        
          

NOTE:
           

COMBUSTIBLE MATERIAL STORAGE
Fire or Explosion Hazard
Read instruction manual before
installing, using or servicing
water heater.
Avoid all ignition sources if you smell gas.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use.
Maintain required clearances to combustibles.
Do not expose water heater controls to excessive gas
pressure.
        

CONTAMINATED AIR
Breathing Hazard - Carbon Monoxide Gas
Install water heater in accordance with
the Instruction Manual and NFPA 54 or
CAN/CSA-B149.1.
To avoid injury, combustion and ventilation
air must be taken from outdoors.
Do not place chemical vapor emitting
products near water heater.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.

      

        
         

       






           
       


      





         

      


CONFINED SPACE
IS LESS THAN





AND the total Btu/hr input rating of all

DIRECT VENT APPLIANCES





EXHAUST FANS

     
          
        

       



LOUVERS AND GRILLES



        


           

     



AIR REQUIREMENTS
Breathing Hazard - Carbon Monoxide Gas
Install water heater in accordance with
the Instruction Manual and NFPA 54 or
CAN/CSA-B149.1.
To avoid injury, combustion and ventilation
air must be taken from outdoors.
Do not place chemical vapor emitting
products near water heater.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.



        



           

          





UNCONFINED SPACE
IS NOT LESS THAN



        

        

    

UNUSUALLY TIGHT CONSTRUCTION

18


          






 

 

OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS
Figure 12
        








           


FRESH AIR OPENINGS FOR CONFINED SPACES
         
        
       

         
DO NOT refer to these illustrations for the purpose of vent
        

OUTDOOR AIR THROUGH TWO OPENINGS
Figure 10
        






 

OUTDOOR AIR THROUGH ONE OPENING
Figure 11
19
AIR FROM OTHER INDOOR SPACES
Figure 14
        



       



          


OUTDOOR AIR THROUGH TWO VERTICAL DUCTS
          
         

DO NOT refer to these illustrations for the purpose of vent
        

Figure 13









           


20
COMMONWEALTH OF MASSACHUSETTS





    


INSTALLATION OF CARBON MONOXIDE DETECTORS
          
  
      


         

         




          








APPROVED CARBON MONOXIDE DETECTORS



SIGNAGE
       
    



“GAS VENT DIRECTLY BELOW. KEEP
CLEAR OF ALL OBSTRUCTIONS.”
INSTALLATION REQUIREMENTS - COMMONWEALTH OF MASSACHUSETTS
INSPECTION
          
  
      


EXEMPTIONS


 


        

          

MANUFACTURER REQUIREMENTS - GAS
EQUIPMENT VENTING SYSTEM PROVIDED
       
       
 
 

 

 

MANUFACTURER REQUIREMENTS - GAS
EQUIPMENT VENTING SYSTEM NOT PROVIDED
        
  
         
        

       
       

 


        
      
        
        

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