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3.
Condensate Tray and Drain (Some Models)
Condensation normally forms on the energy transfer core during the cold weather
(below 27°F or -3°C). Moisture can build up when the warm air from your home
comes in contact with the cold air from outside. The tray collects the moisture and
funnels it to the drain. The drain pans are made of thermoformed plastic for easy
cleaning.
4. Defrost Mechanism (Some Models)
Some models have an electronically-controlled damper frost control mechanism
to prevent frost buildup on the core. Defrost timing will change based on incom-
ing outdoor air temperature.
Example: When the outside temperature drops below
27°F (-3°C)
the defrost
timer is activated. At the end of the 25-minute run cycle, when the core can
experience some nominal frost buildup, the timer activates a motor-driven
damper door that simultaneously opens the defrost port and closes off the
supply air port.
.
Outdoor Temperature Defrost Timer
27°F (-3°C) 3 minute defrost/25 minute run
-4°F (-20°C) 4.5 minute defrost/17 minute run
-31°F (-35°C) 7 minute defrost/15 minute run
DEFROST DAMPER
(MOTOR AND DOOR)
CABINET
FILTERS
(2)
DRAIN
P TRAP
DRAIN PANS
DRAIN
LINE
DOOR
KEEPER
PLATE (2)
INSULATED
ACCESS
DOOR
M29852
MAIN
MOTOR
DEFROST PORT (NON-DUCTED)
CORE INSTRUCTIONS
ENERGY TRANSFER
CORE
SQUIRREL
CAGE FAN
DUCTING
(4 PORTS)
CORE GUIDE
CHANNEL (4)
69-1188_A.fm Page 4 Wednesday, January 27, 2010 7:25 AM