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COMBUSTION AIR SYSTEM  

Model

:  CAS-2WM 

WEIL-MCLAIN OUTSIDE AIR KIT 

FOR USE WITH OIL BURNER MODELS QB-180 & QB-300 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

The Air Boot™ model CAS-2WM is for use only on the designated burner(s) as 
described in these instructions only when the specific burner includes this Air Boot™ 
when shipped from the burner manufacturer or where the burner instructions 
specifically reference the model CAS-2WM Air Boot™ as an optional air intake 
system. 

 

I

TEMS INCLUDED IN KIT

:

 

I

NSTALLER SUPPLIED ITEMS

:

 

1 - Air Boot™ 

Air Duct Pipe and Elbows as needed 

1 - 4” VRV (Vacuum Relief Valve) 

  -use 4” Dryer Venter, Aluminum or 

1 - 4” IAH Hood 

Galvanized Steel 

1 - Set of Gaskets 

¼” NPT 90° street ell for oil line if needed 

1 - Burner Coupling Set 

Exterior rated caulk, silicone sealant or  

2 - Mounting Bolts 

  equivalent

 

 

 

 

4” IAH HOOD 

AIR BOOT™ 

4” VRV 

 

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