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Figure 10: Typical Construction Details of Sidewall Vent and Air Intake
3. Finish the vent installation by caulking the annulus to seal around the two (2)
holes where the thermoplastic pipes pass through the wall.
4. To prevent foreign material, insects, or small animals from entering the pipes,
an optional vent or intake terminal (stainless steel) screen is available from
Thermo Products under part no. 320219.
J. CONNECTING THE FURNACE TO ROOF VENT / AIR TERMINATIONS
The CMA/CMC is designed to be vented with either a concentric vent assembly
or twin 2" PVC stacks. A concentric vent kit is available that will allow the
furnace to be vented through the existing roof jack or thru the 3" ceiling/roof
flashing plate.
Concentric vent utilizing existing roof jack as a chase.
Two kits are available depending on the flue pipe diameter of the existing
roof jack.
AOPS7483 is to be used for roof jacks that have a 4" vent pipe diameter.
AOPS7544 is to be used for roof jacks that have a 5" vent pipe diameter.
Follow instructions included with concentric vent kit.
Concentric vent without roof jack as a chase.
Both kits identified above (AOPS7483 & AOPS7544) will allow the
concentric vent pipe to be vented through the roof with a 3" ceiling/roof
flashing plate included. Follow instructions included in those kits.
Dual 2" vent/air termination kit AOPS7484
Should the installation require venting with just 2 – 2" PVC pipes, a Dual
Pipe Flashing Kit AOPS7484 is available. Follow instructions included
with the kit.
Terminations
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