46
FURNACE TWINNING
INSTALLATIONS
Twinning operation of two furnaces,
i
nstalled side-by-side, connected by a
common duct system with main
power supplied by the same source.
I
MPORTANT: Twinning of these units
requires an accessory twinning kit.
Refer to the specification sheet for
proper kit. Do not attempt to twin
these models by using the
instructions below.
IMPORTANT: Only twin furnaces with
identical control boards.
IMPORTANT: Only bottom returns
can be used. No more than two
furnaces can share the same supply
and return. Furnaces must have
same heating and blower capacity.
Twinning furnaces must operate off
the same phase of power.
It should be noted that both blowers
will run simultaneously when there is
a call for heating, cooling or fan.
The “OK” LED will flash if twinning is
not set up properly.
fireplace, sun rays, lamps, televisions,
radios or air streams from registers.
Refer to instructions packed with the
thermostat for “heater” selection or
adjustment.
ACCESSORIES
FIELD-INSTALLED
OPTION ACCESSORIES
ELECTRONIC AIR CLEANER
(EAC)
NOTE: A spade terminal for EAC is
p
rovided on these models.
HUMIDIFIER
NOTE: Humidifier output is not
available on these models.
ALTERNATE (LEFT SIDE)
DRAIN KIT - RXGY-H01
(DOWNFLOW MODELS
ONLY)
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