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507388-01
Issue 1732
3. Seal the space between the unit and building opening
using a non-hardening caulking compound. The seal
must be weather-tight to prevent entrance of moisture
and water into the building. Make sure the drain holes
in the base are not plugged with caulking.
Evaporator Condensate Drain
Install the plastic drain tube (furnished) over the 5/8” O.D.
fitting in the center of the Evaporator condensate pan.
Connect other end of the drain tube to the open trap (see
Figure 2). The plastic drain connection is provided so that
it may be disconnected from the permanent drain tubing in
the building in the event it becomes necessary to remove
the cooling chassis assembly.
The drain line should pitch gradually downward at least 1”
per 10’ of horizontal run to the open drain trap.
Be certain that the plastic drain tube has free drainage and
is not crimped or flattened at any bend.
Figure 2. HWC Evaporator Condensate Drain
Installation
Drain Pan
Open Drain Trap
Return
Air Duct
To Open
Drain Trap
Alternative
Method
5/8
" I.D.
Plastic Tube
(Supplied)
Top of Drain Tube
Must be Below
Bottom of Drain Pan
Drain Tube - Pitch 1"
for every 10 ft.
(Field Supplied)
Combustion Air
This unit is a direct - vent furnace which obtains all air
needed for combustion from outdoors.
Insufficient combustion air can cause headaches,
nausea, dizziness or asphyxiation. It will also cause
excess water in the heat exchanger resulting in rusting
and premature heat exchanger failure. Excessive
exposure to contaminated combustion air will result
in safety and performance related problems. Avoid
exposure to the following substances in the combustion
air supply:
• Permanent wave solutions
• Chlorinated waxes and cleaners
• Chlorine base swimming pool chemicals
• Water softening chemicals
• De-icing salts or chemicals
• Carbon tetrachloride
• Halogen type refrigerants
• Cleaning solvents (such as perchloroethylene)
•
Printing inks, paint removers, varnishes, etc.
• Hydrochloric acid
• Antistatic fabric softeners for clothes dryers
• Masonry acid washing materials
WARNING
Venting
The venting system is an integral part of the appliance.
The venting system must not be modified or added on
to.
The unit contains a combustion inducer. The inducer
draws the combustion products out of the heat exchanger
together with dilution air and forces the mixture from the
unit to the outside. No special provisions are required for
supplying air for combustion, nor is a chimney required.
The vent outlet must not be altered or extended.
The venting system is designed for proper operation under
all weather conditions and for winds up to 31 m.p.h.
