Lennox GWB84-IE Non-Condensing Boiler Installation guide

PN 240013110, Rev. A [08/15/2020]

RETAIN THESE INSTRUCTIONS FOR

FUTURE REFERENCE

THESE INSTRUCTIONS MUST BE

AFFIXED ON OR ADJACENT TO THE

BOILER.

GWB84-042IE, GWB84-075IE,

GWB84-112IE, GWB84-150IE,

GWB84-187IE

GAS FIRED BOILER

INSTALLATION

INSTRUCTIONS

PRODUCT LITERATURE

Lennox Industries Inc.

Dallas, Texas

GAS-FIRED HOT WATER BOILERS

These Gas-Fired Water boilers are low pressure,



     





      

     



Cast Iron Heating Boilers.

WARNING











supplier.

Up date image



For Natural Gas Or Propane

Tested For 50 psi.





1 - Physical Data �� 4

2 - Safety Symbols and Warnings �� 5

 ......................................................................................5

 ........................................................................................................6

3 - Locating the boiler �� 7

 ..........................................................................................7

3.2 Boiler Location Considerations ....................................................................................8

4 - Connecting supply and return piping �� 9

 ...................................................................................9

 ..............................................................................10

5 - Ventilation & Combustion Air �� 12

6 - Vent system modification �� 13

7 - Vent Installation �� 14

7.1



......................................................................................14

 ..................................................................................14

8 - Horizontal Venting (Category III) �� 16

9 -

Optional Horizontal Venting Instruction

�� 21

10 - Gas supply Piping �� 22

11 - Electrical Wiring �� 24

 ................................................................................24

 ..........................................................................................24

12 - Wiring Diagrams �� 25

13 - Sequence of Operation �� 26

14 - Starting Your Boiler�� 27

.......................................................................................................27

14.2 Operating Instructions ...........................................................................................28

 ......................................................................................28

15 - Checking and Adjusting �� 29

 .............................................................................29

 ......................................................................................... 29

 ......................................................................................29

 .........................................................................................29

 ........................................................................30

16 - Maintaining Your Boiler �� 31

17 - Service Hints �� 32

18 - Boiler Ratings & Capacities �� 33

Appendix A - Control Module �� 34





......................................................................34

 .............................................................................................34

 ..................................................................................................34

 .................................................................................................................34

 ..............................................................................................................35





......................................................................36

......................................................................................................36

 ....................................................................................37

 .................................................................................................... 38

TABEL OF CONTENTS

PN 240013110 Rev. A [08/15/2020]

VERIFY CONTENTS RECEIVED

Fully Assembled Boiler *Vent Adapter

*Fuse Link

Pump (Optional)

*Drain Valve *ASME Safety Relief Valve *Tridicator

*Black Iron Fittings

(see parts list for sizes

and use)

Includes Essential





Document Package

KEEP THIS MANUAL NEAR BOILER

RETAIN FOR FUTURE REFERENCE



time of printing of this manual� Manufacture reserves the right to







PN 240013110 Rev. A [08/15/2020]



1 - PHYSICAL DATA

Model

GWB84-042IE GWB84-075IE

GWB84-112IE

GWB84-150IE GWB84-178IE

# Sections 2 3 4 5 6

A Width 11"14-¹/"17-/""24"

279 mm 362 mm 445 mm 527 mm 610 mm

B Height 29” 29” 29” 29” 29”

    

C Depth     

    

D Vent Location 2-

/

"2-

/

”2-

/

”2-

/

”2-

/

”

59 mm 59 mm 59 mm 59 mm 59 mm

E 

3” 3” 3” 3” 4”

    

F 

    

    

 1-

¹/

 1-

¹/

 1-

¹/

 1-

¹/

 1-

¹/



Natural Gas Inlet     

     

Drain Valve NPT     

     

     

 

 





"

(313.1 mm)

"

(592.6 mm)







(184mm)



(83mm)

" (516 mm)

" (419 mm)

"

(117.8mm)











PN 240013110 Rev. A [08/15/2020]

2 - SAFETY SYMBOLS AND WARNINGS

CAUTION





WARNING





DANGER

















WARNING





these instructions could result in death or serious



and accessories.

CAUTION













NOTICE





WARNING









FOR YOUR SAFETY READ BEFORE OPERATING

Hot Water Can Scald!



dish washing and other sanitizing needs can scald and











tap or draw their own bath.









• 

• 









• 



• 

• 

DANGER

Water

Temperature

Seng

1st Degree Burn

Exposure Time For

An Adult

2nd and 3rd Degree Burn

Exposure Time For An

Adult

120° F 1 minute 5 minutes

130° F 5 seconds 30 seconds

140° F 2 seconds 5 seconds

150° F 1 second 1.5 seconds

160° F Instantaneous 0.5 seconds

Note:









2�1� Safety Symbols & Warnings

WARNING



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



PN 240013110 Rev. A [08/15/2020]

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









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





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















PN 240013110 Rev. A [08/15/2020]

3 - LOCATING THE BOILER





to the National Fuel Gas Code,

and/or Natural Gas and Propane Installation Code,















National Fuel Gas Code



Natural Gas and Propane

Installation Code applicable













during appliance operation and service, (circulator

















enough to allow largest boiler part to enter, or to



heater.











sooting.

NOTICE

Follow local regulations with respect to installation



Table 1 - BOILER MINIMUM CLEARANCE TO

COMBUSTIBLES

Unit Minimum

Clearances

Top 

 

 

 

 

Flue/Vent Connector 

Near Boiler Piping 

Set unit on concrete or other noncombustible material base or

oor. DO NOT INSTALL ON CARPETING.

Figure 1 - Minimum Clearances To Combustible

Construction



ANSI



above.

8”

Boiler



Front



LEFT

18”

6” 8”

6”

CAUTION





WARNING











3�1 Installation Requirements

10.

FOR INSTALLATION ON NON-COMBUSTIBLE

FLOORS ONLY -





envelope provide with boiler and outlined in National

Fuel Gas CodeDo Not Install

Boiler on carpeting�

11.





PN 240013110 Rev. A [08/15/2020]

3 - LOCATING THE BOILER

• 



• 



• 

electrical service.

• 





• 

wet.

• 

boiler.

Table 2 - CONTAMINANTS

Items to Avoid Products Which May Contain These

Items Areas Where These Items May Be

Found

















Carbon Tetrachloride















Cat litter







Paint, Varnish, Turpentine, etc.







Photo processing plants



















Other































• 

• 







3�2 Boiler Location Considerations

PN 240013110 Rev. A [08/15/2020]

4 - CONNECTING SUPPLY AND RETURN PIPING













ASME RELIEF VALVE

DISCHARGE

PIPING

Figure 2 - Safety Relief Valve Discharge Piping

ASME Boiler

and Pressure Vessel Code







position.







Figure 2.

• 

• 

or greater.

• Individual boiler discharge piping shall be independent



• 





• 



piping.

• 

• 



• 

WARNING



installed with spindle in upright position only,





4�1 Safety Relief Valve Installation

WARNING





Install discharge piping per these instructions. Failure





PN 240013110 Rev. A [08/15/2020]

LIMIT SENSOR

MINIMUM HEIGHT FOR

LOW WATER CUTOFF

PROBE

Figure 3 -

Forced Hot Water Typical Piping

LIMIT SENSOR

MINIMUM HEIGHT

FOR LOW WATER

CUTOFF PROBE

Figure 4 - Forced Hot Water Typical Piping

With Zone Control Valve

4 - CONNECTING SUPPLY AND RETURN PIPING

PN 240013110 Rev. A [08/15/2020]

• 



boiler.

• 





• 



















• 



with heating boiler with appropriate valves to prevent



Figure

• Boiler connected to heating coils located in air handling









Figure 5

- Piping Arrangements For Boiler When

Used In Connection With Refrigeration

System



150°F) And Large Water Content Systems





• 





• 











• 





Figure

Adjust two throttling valves to maintain at

least 130° F (54° C) in boiler return.

Figure 6

- Bypass Piping

4 - CONNECTING SUPPLY AND RETURN PIPING

WARNING













4�2 Supply and Return Requirements

PN 240013110 Rev. A [08/15/2020]

5 - VENTILATION & COMBUSTION AIR





National Fuel Gas Code

Natural Gas and Propane Installation

Code

building codes.

















• 



• 











• 





 







3

B. 







 3

C. 



• 



 





enclosure.





Btu/hr







Btu/hr

enclosure.

B. 









• 



• 







• 





• 



• 



or structure where boiler is installed, including air



Table 3 ( ft

Input



Standard

Method



0�1 0�2 0�3 0�4 0�5 0�6

42,500 2125 6375 3188 2125 1594 1275 1063

75,000 3750 11250 5625 3750 2813 2250 1875

112,500 5625 16875 8438 5625 4219 3375 2813

150,000 7500 22500 11250 7500 5625 4500 3750

187,500 9375 28125 14063 9375 7031 5625 4688

WARNING







Do not obstruct air openings. Follow instructions









5�1 Requirements

PN 240013110 Rev. A [08/15/2020]

































windows and all doors between the space in which the















Place in operation the appliance being inspected. Follow











6 - VENT SYSTEM MODIFICATION









other gas-burning appliance to their previous conditions







the National Fuel gas Code,

and/or the Natural Gas and Propane Installation Code,









National Fuel Gas Code,

and/or the Natural Gas and Propane Installation Code,







6�1 Removal of Existing Boiler From Venting

System

PN 240013110 Rev. A [08/15/2020]











National Fuel Gas Code

Natural Gas and Propane

Installation Code, or applicable



















to appropriate venting tables in the National Fuel













 

B. 

C. 





 Enclosed in a chase

B. 

C. 

D. 







water heater and boiler. Consult appropriate Vent

National Fuel Gas Code











10.





connection.

11.





12.





13.



14.



• 







• 









• 







7 - VENT INSTALLATION

WARNING















WARNING





NOTICE











listing.

NOTICE





secured.

7�1 Chimney Venting (Category I)

7�2 Requirements

PN 240013110 Rev. A [08/15/2020]

WARNING











7 - VENT INSTALLATION

Liner

Chimney

Thimble

Vent System

Cleanout

Boiler

Vent pipe must be:

At lease 2 ft.

(610mm) higher

than any part of

the roof, but not

less than 3 ft.

(915mm) tall, and

within a 10 ft.

(3m) radius of the

apex.

CHECK YOUR CHIMNEY



vent installations shall be in accordance with

National Fuel

Gas Code“Venting



Natural Gas and Propane Installation Code,

 or 

local building codes.

Figure 7 - Type B Gas Vent

3”x4” Increaser

PN 240013110 Rev. A [08/15/2020]

Horizontal Requirements (Category III) venting



these instructions�

















CHOICE OF VENT PIPE MATERIAL

• 

• 

Pipe.

• 

• 

Vent Pipe.

INDUCED DRAFT HIGH EFFICIENCY BOILERS

8 - HORIZONTAL VENTING INSTRUCTIONS

Figure 8 









8�1 Horizontal Venting (Category III)

PN 240013110 Rev. A [08/15/2020]



Figure 8�

Vent pipe is pitched







this vent.



 



-or-

B. 



-or-

C. 



-or-

D. 











 2, 3, 4 and 5 section boilers use 3” vent pipe



blower.

B. 6 section boilers use 4” vent pipe, starting with

a 3” to 4” stainless steel vent pipe transition that





boilers.



 

 elbow



B. 





C. 



• 

each 3” elbow

• 

each 4” elbow

Example:

6 section boiler has 3 elbows plus the













 









Figure 8

-or-

B. 

3, 4, 5 section boilers use VH-1-3”. For 6 section

boilers use VH-1-4”.







 



















B. 

then the single wall pipe will be passing through











• 

• 



inches.















C. 









walls.

8 - HORIZONTAL VENTING INSTRUCTIONS

PN 240013110 Rev. A [08/15/2020]

D. 

о





о







о



о



о



structure.

о



о



8 - HORIZONTAL VENTING INSTRUCTIONS

Figure 9 - Horizontal Venting Clearances

оUnited States











оCanada -









о



о

wind. Locate or guard vent to prevent accidental

contact with people or pets.

о







о







PN 240013110 Rev. A [08/15/2020]

                   

The vent pipe needs to be both watertight and gas











                                                 





blower outlet. For 4” vent pipe runs begin with a













































1. 





2. 



and oriented upward in all horizontal appliances.





3. 





4. 

5. Horizontal venting shall have slope not less







6. 

operating appliance.

B. 



















                                                      

















in the direction indicated on the vent pipe. When

















connecting vent pipe.

1. 













2. 



aligned and oriented upward in all horizontal







3. 











4. Horizontal venting shall have a slope not less







5. 

operating the appliance.

8 - HORIZONTAL VENTING INSTRUCTIONS

PN 240013110 Rev. A [08/15/2020]

C. 

























                                                





                                          



















1. 











2. 

and oriented upward in all horizontal vent pipe

runs.

3. 







4. 

beaded channel. Feed the Joiner Band in so





5. 





out the silicone over the channel inlet and the





6. Horizontal venting shall have a slope not less







7. 

operating the appliance.

D. 



vent pipe runs on 2, 3, 4 and 5 section boilers,





                                             







increaser to the 3” adapter outlet. Continue the





DO NOT use 3” vent pipe on 6 section boilers.



















For 2, 3, 4 and 5 section boilers using the VH-1-





                                                    





















VH-1 - 4” vent hood, an adapter is not required.

