Weil-McLain WGO Series 4 Oil-Fired Water Boiler User manual

Weil-McLain
Brand
Weil-McLain
Model
WGO Series 4 Oil-Fired Water Boiler
Type
User manual
• Installation
• Startup
• Maintenance
• Parts
Boiler Manual
Series 4
Oil-Fired Water Boilers



Part number 550-142-331/0124
HOMEOWNER and SERVICE TECHNICIAN — read and follow completely.
When calling or writing about the boiler



Homeowner —
Read and follow all information on pages 1 through 7 ONLY.
Service technician —
Read and follow ALL information in the entire manual.
Failure to follow all instructions in proper order can cause severe personal injury,
death or substantial property damage.
Using this manual


 

 

 

 


Hazard denitions
Packaged, Semi-packaged, and knocked-down boilers
Packaged boilers:  

Semi-packaged boilers 
           

Knocked-down boilers  

Part number 550-142-331/0124
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
HOMEOWNER and SERVICE TECHNICIAN — read and follow completely.
Using this manual . . . . . . . . . . . . . . . . . . . . .2
Homeowner. . . . . . . . . . . . . . . . . . . . . . .2
                    
         

Hazard denitions . . . . . . . . . . . . . . . . . . . . .2
Contents . . . . . . . . . . . . . . . . . . . . . . . . . .3
Please read before proceeding . . . . . . . . . . . . . .4
Homeowner. . . . . . . . . . . . . . . . . . . . . . .4
                    4
               4
                   4
                    4
             5
Routine maintenance schedule. . . . . . . . . . . . . .5
             5
              5
5
                 5
                    5
Operation. . . . . . . . . . . . . . . . . . . . . . . . . .6
                   
Troubleshooting . . . . . . . . . . . . . . . . . . . . . .7
Before installing boiler . . . . . . . . . . . . . . . . . .8
             
             

(see                       


Install boiler — Packaged boilers only. . . . . . . . . 10
                      
           
Install boiler -   12
                      
           

              
                 
Install burner — all boilers . . . . . . . . . . . . . . . 15

    
Connect breeching . . . . . . . . . . . . . . . . . . . 16
             
Connect water piping . . . . . . . . . . . . . . . . . .18
              
                      
       
         

                     
              

              
            
Connect wiring. . . . . . . . . . . . . . . . . . . . . . 22
             
                   
            
                     
                     
                 
Connect wiring — blocked vent
shuto switch option . . . . . . . . . . . . . . . . . .25
              
Connect wiring - vent damper . . . . . . . . . . . . . 26
Connect oil piping . . . . . . . . . . . . . . . . . . . . 26
            
            
Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . 27
                     
                
                 
Check-out procedure . . . . . . . . . . . . . . . . . .28
             
           
Annual service check list . . . . . . . . . . . . . . . .29
           
Detailed service procedures . . . . . . . . . . . . . . 30
                
       
Close clearance installation . . . . . . . . . . . . . . 31
              
                 
Replacement parts . . . . . . . . . . . . . . . . . . . 33
Dimensions . . . . . . . . . . . . . . . . . . . . . . . 38
Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Handling ceramic ber and berglass materials . . . 40
Contents
Part number 550-142-331/0124 3
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
HOMEOWNER and SERVICE TECHNICIAN — read and follow completely.
 

• 

• 
• 
• 

• 
   

     

• 
• 
• 
• 
Tips for water systems —
•      


 




• 


• 
       

        


 
 



 

 
          

Saltwater Damage —      








Electrical Damage — electrical componentwiring



Homeowner —
•      

the system
•  must
      



•       

• 

•     
   

•     

Service technician —
•       



•        
      

• 
      

•      

 
    

•        


• 
     
       

•       
      

• 
    

• DO NOT TAMPER WITH UNIT OR CON-
TROLS.   


Please read before proceeding
Part number 550-142-331/0124
4
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
HOMEOWNER and SERVICE TECHNICIAN — read and follow completely.
Routine maintenance schedule
Beginning
each heating season
 

Daily
during heating season
 

Weekly
during heating season
 

 


 


 


End
of heating season
 

• 

• 


Boiler
shutdown
 

 

• 
• 
• 
• 
Frozen Water Damage Hazard





Part number 550-142-331/0124 5
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
HOMEOWNER and SERVICE TECHNICIAN — read and follow completely.
Figure 1 
1 
2 
3 

4 
5 

6 

7 l
Operation
WGO (see Figure 1)
 
•       

• 
• 
• 
• 
 



 
    

 

Part number 550-142-331/0124
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
HOMEOWNER and SERVICE TECHNICIAN — read and follow completely.
Troubleshooting
   


Common
Problems Common Causes Possible Corrections


  






 



 



   





    





   
















 
 

 







  


  

    

 




 





Part number 550-142-331/0124
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.

Walls


Wall

A 

B 



A
A
A

Installations must comply with

• 
• 
• 

• 


• 

• 
• 
Before selecting boiler location

• 
• 
• 
•  
• 
• 

Provide clearances around
boiler
(see Figure 2)
 





•  
•  
     


• 
•  
• 

•      
      

Figure 2 
 

Before installing boiler
Homeowner — STOP! 



Part number 550-142-331/0124
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4— Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Before installing boiler 

    
  
Boiler
Size
Length
inches
Width
inches
Minimum
height
inches
WGO-2  
WGO-3  
WGO-4  
WGO-5  
WGO-6  
WGO-7  
WGO-8  
WGO-9  
Table 1 
Provide air for combustion and
ventilation
 

• 
• 

      
        






   





Permanent Openings



Inside air




 

Outside air



• 



• 

  

       
       




• 
•  



Foundation



 
         



• 
• 
Part number 550-142-331/0124
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Install boiler — Packaged boilers only
Place boiler
 
      

 
 

 


 

 


         
       

      
 
 
        


         

 
 



 
 

 
 
 
 

       

Perform hydrostatic pressure test
 
 
 
 
 

 



      


 
     
      
    

 
 
Part number 550-142-331/0124

WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4— Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Install boiler — Packaged boilers only 
Figure 3 

Part number 550-142-331/0124 
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Install boiler – Semi-packaged and Knocked-down boilers only
    


Place boiler
Semi-packaged WGO-2 through 6 — position on
site
 



outlet (see 
 


 
   

 
  
          


 

 
 



Knocked-down WGO-7, 8 & 9 — split the
assembled block for easier handling (see
Figure 4, page 13)
 

 


 
 
     
  

 


 


 

 


 


      



        



Part number 550-142-331/0124

WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4— Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Figure 4 










hood















Install boiler – Semi-packaged and Knocked-down boilers only (
Knocked-down WGO-2 through 9 — install ue
collector hood (see Figure 4 )
 


 

 



 

  

 
• 

      

• 
  

       

 
Part number 550-142-331/0124 
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Front section
WGO-2


 

Back section
Perform hydrostatic pressure test
 See 
 
 

 
 
 


 



 


 
 


 
Figure 5 
Location Size Function
  
  

  
  

  
 
 

  
Table 2 
 

 
 
 
 
 
 

 

Install jacket
(knocked-down boilers only sizes 7 through 9 only)


Install boiler controls
     and   and 

 

       

Install boiler – Semi-packaged and Knocked-down boilers only
Part number 550-142-331/0124

WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4— Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.








Figure 6 
Install burner
(also refer to instructions packed with burner)
    


For burners with OEM welded anges:
 

 

 
For burners without OEM welded anges:
 

 
 
        

        


 
Install burner — all boilers
Part number 550-142-331/0124 
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Boiler
Size
Minimum
breeching
diameter

Minimum
AHRI
chimney size Minimum
chimney
height
Rect. Round
WGO-2
 
  WGO-3
WGO-4 
WGO-5 

  
WGO-6

WGO-7
WGO-8
 
  
WGO-9

 
 
 
Connect breeching
General chimney requirements
• 

•   
       

• 

•        

•        

• 

• 

• 


• 
• 
• 
• 




• 
•  
•  
• 
 


Connect breeching:
    


      
      

 
 
Table 3
•  and
•  and 
 



Table 3 
 


    



         

•      

•      

• 
 

  


 and
Part number 550-142-331/0124

WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4— Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.

















0251-056_OVD

















0250-056_OVD


















Connect breeching 
Figure 7 

Figure 8 

Figure 9 

Figure 10 

Part number 550-142-331/0124 
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Connect water piping
General piping information
• 

•        
        






•          

Install piping
• See Table 4



• 

• 







DIAPHRAGM expansion tank
(Figure 11, page 19)
• 



• 


•          

CLOSED expansion tank
(Figure 12, page 19)
• 

    



•        



To connect WGO boilers to indirect-
red water heaters
        

Table 4 
Boiler
Size To system From
system
  
  
  
  
  
  
  
  


Part number 550-142-331/0124

WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4— Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Connect water piping 
Figure 11
Figure 12 
Isolation


system


To system



 




Isolation










system
To system


Isolation






Part number 550-142-331/0124 
WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.


55
3
Piping MULTIPLE ZONES


See        

Zoning with circulators:
       

 

 
Zoning with zone valves:
 

      
     
      

 

      



4
5
5
Figure 13
Legend
1 
2 
3 
4 
5 
Connect water piping 
Figure 14
Part number 550-142-331/0124

WGO OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 4— Boiler Manual
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Weil-McLain WGO Series 4 Oil-Fired Water Boiler User manual

Weil-McLain
Brand
Weil-McLain
Model
WGO Series 4 Oil-Fired Water Boiler
Type
User manual
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