Thermo Products CMA2-75N ユーザーズマニュアル

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

inlet as shown in Figure 10, making sure that the spacing between the inlet and
outlet complies with that noted in Figure 8.

Figure 10: Typical Construction Details of Sidewall Vent and Air Intake

Terminations

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 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.