Page 3 of 16
507388-01
Issue 1732
• A room thermostat must control the furnace. The use
of fixed jumpers that will provide continuous heating is
not allowed.
• The return air duct must be provided and sealed to the
furnace.
• Return air temperature range between 60°F (16°C)
and 80°F (27°C) must be maintained.
•
Air filters must be installed in the system and must be
maintained during construction.
•
Air filters must be replaced upon construction
completion.
• The input rate and temperature rise must be set per
the furnace rating plate.
• One hundred percent (100%) outdoor air must be
provided for combustion air requirements during
construction.
• The furnace heat exchanger, components, duct
system, air filters and evaporator coils must be
thoroughly cleaned following final construction clean-
up.
• All furnace operating conditions (including ignition,
input rate, temperature rise and venting) must be
verified according to these installation instructions.
Installing With a Wall Sleeve
Refer to the installation instructions packed with the wall
sleeve and Figure 1 for guidance in assembly and mounting
using a wall sleeve.
Make sure the gaskets attached to the sleeve are not
damaged.
Seal the space between the wall sleeve and the building
opening with non-hardening caulking compound. The seal
must be weather-tight to prevent entrance of moisture and
water into the building.
Assure that the unit is completely seated against the
gaskets on the wall sleeve.
The sleeve is not intended as the sole support for the
unit. An additional support must be provided near the
return opening on the unit for adequate support. The
use of vibration isolation material between the unit and
the support is recommended.
CAUTION
Installing Without a Wall Sleeve
Refer to the following directions and Figure 1 for guidance
in installing the unit without a wall sleeve:
1.
Measure the size of the unit and provide an opening
in an outside wall that will accept the unit. Local
ordinances may require a steel lintel to support the
wall above the opening. The opening must be square
in all four corners.
2. Position the unit so that the grilles on the outside face
of the unit are flush or extend beyond the face of the
exterior wall, but not recessed more than 2” from the
face of the building. Provide a support under the unit,
inside the building. Make sure that the inside support
does not block the return air. The unit should be
installed level or pitched slightly to the outside of the
building so that rain water will drain away.
Figure 1. HWC Installation
Plywood
28"
Mi
n.
Wall Sleeve
Vibration Isolating Material
FLOO
R
6 x 22 Minimum Opening
to Align with Return Air
Opening in Unit.
"
"
