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S9V2-SVX001-1B-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.
IImmppoorrttaanntt:: 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.
4. Slide PVC pipe through vent outlet adaptor and
insert into inducer outlet.
5. Twist to insure PVC is fully inserted.
6. Tighten the two clamps.
7. Install the combustion air inlet PVC pipe.
NNoottee:: 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.
NNoottee:: If required, transition to larger venting within 2'
of the cabinet. CPL01544 – 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.
Downflow Furnace - Left Side Vented
Combustion Air
Changes need to be made to the inducer orientation
when installing the downflow furnace with the
combustion air vented through the side. Additional
changes are needed for hose routing and PS2 rotation.
The figure to the top right shows the furnace as it is
sent from the factory.
Use the following steps to modify the furnace for
downflow with side venting of combustion air.
IImmppoorrttaanntt:: Right side vent outlet is not allowed
because condensate will not drain.
FFuurrnnaaccee CCoommbbuussttiioonn AAiirr EExxhhaauusstt OOppttiioonnss
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