Rheem GF951U Series - Location Requirements and Considerations

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GENERAL INFORMATION
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is not approved for installation in a
mobile home. Doing so could cause
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1. !%('*,&,If installing the
unit over a finished ceiling or
living area, be certain to install an
auxiliary condensate drain pan
under the entire unit. This
auxiliary drain pan should extend
under any evaporator coil
installed with the furnace and the
open portion of the condensate
drain assembly. See
“Condensate Drain/Neutralizer”
section for more details.
2. !%('*,&,If using a cooling
evaporator coil with this furnace:
a. be sure the air passes over
the heat exchanger before
passing over the cooling
coil. The cooled air passing
over the warm ambient air
inside the heat exchanger
tubes can cause
condensation inside the tubes
resulting in corrosion and
eventual failure.
b. install a parallel duct system
to divert all the air from the
furnace allowing it to pass
over the cooling coil only. Use
dampers or other means to
prevent chilled air from
passing over the heat
exchanger.
If these are manual dampers, they
must be equipped to prevent heating
or cooling operation unless the
damper is in the full heat or cool
position.
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3. !%('*,&,Install the furnace
level. If it is not level, condensate
cannot drain properly, possibly
causing furnace shut down.
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', These furnaces are approved
for installation in attics, as well as
alcoves, utility rooms, closets and
c
rawlspaces. Provisions must be
made to prevent freezing of
condensate.
4.
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When the condensing horizontal
gas furnace is installed in an
unconditioned space where the
temperature would be capable of
reaching close to or below 32°F
(0°C). a self-regulating heat tape
is required on the condensate
drain, along with an insulation
wrap. The heat tape should meet
the following requirements:
a. The heat tape must be UL
listed.
b. The heat tape must be
installed per the
manufacturer’s instructions for
the entire length of drain pipe
in the unconditioned space.
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DRAIN
PIPE
HEAT
TAPE
TRAP
I526
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LOCATION REQUIREMENTS AND CONSIDERATIONS
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