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

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

NOTICE: For models CDB1-100 and CDB1-125 used in horizontal applications, immediately transition from 2-inch to 3-inch diameter pipe by installing the 3-inch x 2-inch diameter PVC reducer just outside the furnace casing. The remainder of the venting system leading away from the furnace must be composed of 3-inch diameter PVC pipe and pipefittings only. Refer to item E in Figure 8.

b.After preparation of the internal 2-inch diameter PVC pipe sections, put a thin bead of a silicone rubber type sealant around the outlet flange of the inducer. Slip the 2-inch diameter PVC elbow (for the model series CDB1 in horizontal applications, a 2-inch diameter PVC tee) over the inducer outlet flange.

Drive one (1) #8 x 3/4 inch sheet metal screw with black protective coating (supplied with furnace) through the elbow and into the outlet flange of the inducer to secure the elbow in place.

Figure 9: Typical Internal Vent Piping Arrangement for the Furnace Model Series CHB1.

Figure 10: Typical Internal Vent Piping Arrangement for the Furnace Model Series CDB1-100 / -125.

Figure 11: Typical Internal Vent Piping Arrangement for the Furnace Model Series CDB1-100 / -125 in RH Horizontal Applications.

c.Using PVC cement, glue the pre-cut 2-inch diameter thermoplastic pipe, from step (a) above, to the 2- inch diameter PVC elbow (for the model series CDB1 in horizontal applications, the 2-inch diameter

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