Thermo Products CBD1-50N, CHB1-125N, CHB1-75N, CHB1-100N, CBD1-75N, CBD1-100N, CBD1-125N, CHB1-50N

Models: CHB1-50N CBD1-50N CBD1-125N CBD1-100N CBD1-75N CHB1-100N CHB1-75N CHB1-125N

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If it is not desirable, or feasible, to vent the furnace through a sidewall, it may be vertically vented through the roof. Installation shall conform to the following guidelines, which are illustrated in Figure 6A, below.

All installations and services must be performed by qualified service personnel.

AOPS7488 / AOPS7489

370191

 

 

 

 

CONENTRIC VENT KIT

SIDE WALL VENT KIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VERTICAL

HORIZONTAL

Figure 6: Optional Direct Vent Kits for the CHB1 / CDB1 Model Series of Furnaces

G. Connecting The Furnace To Roof Exhaust / Intake Terminations

If it is not desirable, or feasible, to vent the furnace through a sidewall, it may be vertically vented through the roof. Installation shall conform to the following guidelines, which are illustrated in Figure 6A, below.

1.The outlet of the exhaust vent and the inlet of the combustion air intake, i.e. the terminations, shall be a minimum of 12-inches above highest anticipated snow level.

2.The exhaust vent outlet must be installed a minimum of 12-inches above the air intake inlet.

3.Where exposed to prevailing winds, the combustion air intake shall be installed upwind of the vent outlet.

4.The exhaust vent and combustion air intake shall be a minimum of 3-inches and a maximum of 24 inches apart.

NOTICE: When the vent termination is installed correctly, a draft should NOT be present in the system during the furnace off-cycle.

Figure 6A: Typical Rooftop Vent and Air Intake Termination Construction Details

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Thermo Products CBD1-50N, CHB1-125N, CHB1-75N, CHB1-100N, CBD1-75N, CBD1-100N, CBD1-125N, CHB1-50N operation manual