Honeywell PERFECT WINDOW ER150 Owner's Manual page 4

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.
Outdoor Temperature
27°F (-3°C)
-4°F (-20°C)
-31°F (-35°C)
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.
.
DEFROST PORT (NON-DUCTED)
69-1188—03
3 minute defrost/25 minute run
4.5 minute defrost/17 minute run
7 minute defrost/15 minute run
DEFROST DAMPER
(MOTOR AND DOOR)
Defrost Timer
CORE INSTRUCTIONS
ENERGY TRANSFER
FILTERS
CORE
(2)
CABINET
DRAIN
LINE
4
DUCTING
(4 PORTS)
MAIN
MOTOR
SQUIRREL
CAGE FAN
CORE GUIDE
CHANNEL (4)
DRAIN PANS
DRAIN
P TRAP
INSULATED
ACCESS
DOOR
DOOR
KEEPER
PLATE (2)
M29852