F. Connecting Furnace To Roof Vent / Intake Terms - Thermo Pride CLHS1-050P36N Installation And Operation Manual

All installations and services must be performed by qualified service personnel.
6. Optional Direct Vent Terminations
Three optional vent kits are available for direct vent terminations, refer to Figure 5.
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The concentric vent kits (Thermo Products p/n AOPS7488 & AOPS7489) provide a means for the vent
and intake to be installed through a single opening in the roof or exterior wall. Kit p/n AOPS7488 is
used on furnace models CLHS1/CLHX1-50 & 75. Kit p/n AOPS7489 is used on furnace models
CLHS1/CLHX1-100 &125.
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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. For horizontal sidewall vent applications only. This kit
may be used on any size furnace in the CLHS1/CLHX1 family.
Figure 5: Optional Direct Vent Kits for the CLHS1 / CLHX1 Model Series of Furnaces
Install these optional kits according to the instructions provided with each kit. In horizontal or side wall
installations. The location and clearance requirements are identical to those of the standard vent
terminations described in this manual.
NOTICE: When using these alternate termination kits the furnace is more susceptible to a nuisance shut off
due to high winds blowing directly into the vent and changing the internal pressure enough to activate a
safety pressure switch. It is best practice to locate the vent so that prevailing winds do not blow directly into
the open vent termination.
F. CONNECTING FURNACE TO ROOF VENT / INTAKE TERMINATIONS
If it is not desirable, or feasible, to vent the furnace through a sidewall, it may be vertically vented through the
roof. Installation shall conform to the following guidelines, which are illustrated in Figure 6, below.
1. The outlet of the exhaust vent and the inlet of the combustion air intake, i.e. the terminations, shall be a
minimum of 12-inches above highest anticipated snow level.
2. The exhaust vent outlet must be installed a minimum of 12-inches above the air intake inlet.
3. Where exposed to prevailing winds, the combustion air intake shall be installed upwind of the vent outlet.
AOPS7488 / AOPS7489
CONENTRIC VENT KIT
VERTICAL
HORIZONTAL
370191
SIDE WALL VENT KIT
20