Thermo Pride CMA3-50D36N Installation And Service Manual page 30

All installations and services must be performed by qualified service personnel.
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. The concentric vent (AOPS7483) can be vented through
the ceiling/roof either thru the existing roof jack or thru the 3" ceiling/roof flashing
plate.
Concentric vent utilizing existing roof jack as a chase.
Follow instructions included with concentric vent kit AOPS7483.
Concentric vent without roof jack as a chase.
Follow instructions included with concentric vent kit AOPS7483.
Dual 2" vent/air termination kit AOPS7484
1. Remove roof jack assembly.
2. Place a 2" (2-holes) ceiling/roof flashing plate to the ceiling centering it
over existing hole.
3. Place second flashing plate on roof over existing hole.
4. Plate must be sealed to roof to ensure a weather proof seal.
5. Secure plate to roof.
6. Drop pvc pipes thru holes in flashing plates.
7. Secure with hose clamps to flashing plate.
8. Seal with silicone type caulk.
Terminations
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