Honeywell 69-2480EF05 Manual

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TheERVandHRVunitsareequippedwithanautomaticdefrostfeaturetoeliminateanyicebuildupon

the core.

• Automatic defrost is initiated once every hour when the fresh air supply temperature drops to 23°F

(-5°C) or colder.

• Thedefrostcycleoperatesbyturningoffthesupplyfanwhilecontinuingtooperatetheexhaustfan.

• Theexhaustfanspeedisadjustedproportionallybasedontheoutdoortemperature,initiallyoperating

at low speed.

• As the outdoor temperature continues to drop, the exhaust fan speed will increase, and will operate at

maximum speed when the outdoor temperature is -4°F (-20°C) or less.

• Defrostcyclerunsfor4minuteswiththesupplyfanoff,followedby40minutesofcontinuousnormal

operation.

• Defrost cycles will continue to repeat as long as the temperature is 23°F (-5°C) or less.

TrueFRESH™ ERV/HRV Ventilation Systems 69-2480EF—05

M28986

Thewiringterminalblockislocatedbehindthecontrolmoduledooronthesideoftheunit.

Toaccesstheterminalblock,openthecontrolpaneldoorbyswingingitopenandtotherightasshown

above.

CAUTION: Voltage hazard.

Can cause equipment damage.

Disconnect power from the unit before beginning installation.

Terminal Description

Automated Defrost

Wiring