S9XB-SVX001-1D-EN
89
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 PS2 pressure switch tubing to
length to ensure there is no sag or trap
created.
IImmppoorrttaanntt:: PS2 conversion does not apply to the S9X1
or S9B1 models.
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.
IImmppoorrttaanntt:: Trim the pressure switch tubing to length to
ensure there is no sag or trap created.
FFuurrnnaaccee CCoommbbuussttiioonn AAiirr EExxhhaauusstt OOppttiioonnss