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18-CE03D1-1F-EN
Downflow Furnace — Top Vented Combustion Air
No changes need to be made to the inducer when installing the
downflow furnace with the combustion air vented through the top.
Important:
Trim the condensate pressure switch tubing to length to
ensure there is no sag or trap created.
1.
Attach the vent outlet gasket to the vent outlet.
2.
Install vent outlet to top of cabinet using 2 screws supplied in the
doc pack.
3.
Install vent inlet gasket and vent inlet using 4 screws supplied in
the doc pack.
1.
Slide PVC pipe through vent outlet adaptor and insert into inducer
outlet.
2.
Twist to insure PVC is fully inserted.
3.
Tighten the two clamps.
4.
Install the combustion air inlet PVC pipe.
Note:
The vent outlet adapter is used for strain relief against the
weight of the venting. The clamp should be tightened after the
internal connection is made.
Note:
If required, transition to larger venting within 2' of the cabinet.
CPL00938 – 2" x 3" offset coupling may be used and is factory
supplied with 120 MBTUH furnaces. Canadian applications may
use BAYREDUCE to meet ULC-S636 requirements.
