![background image](http://html1.mh-extra.com/html/thermo-pride/cdb1-100n/cdb1-100n_installation-and-operation-manual_1104450021.webp)
All installations and services must be performed by qualified service personnel.
15
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. 320226.
5.
Optional Direct Vent Terminations
Two (2) optional vent kits are available for direct vent terminations on horizontal (sidewall) vent
applications only, refer to Figure 6.
•
The concentric vent kit (Thermo Products part no. 370171) provides a means for the vent and
intake to be installed through one (1) 4-1/2 inch diameter hole through the outside wall.
•
The sidewall vent cap (Thermo Products part no. 370191) is a cover installed over the
exhaust vent and air intake pipes on the exterior of the building.
These optional kits shall be installed according to the instructions provided with each kit. The
location and clearance requirements are identical to those of the standard vent terminations
described in this manual. These vent kits may be used on any size furnace in the CHB1 / CDB1
model series.
Figure 6: Optional Direct Vent Kits for the CHB1 / CDB1 Model Series of Furnaces