Table 17. Default Auxiliary Relay Operations.
a
Simple dehumidification uses a normally closed contact. The relay is closed when humidity is below the high limit. When the
humidity is above the high limit, the contact is open.
b
The PDA configuration tool output screen displays available Auxiliary Relay functions based on this configuration.
Heat Pump or
Conventional
Contact Not Used
as Heat or Cool Stage Contact Configuration of Contact Not Used as Stage
Heat Pump --terminal, between W1
and W2 terminals
Simple
Dehumidification
a
Simple
Dehumidification
a
Time of Day Time of Day
W2 not aux heat Economizer Time of Day Economizer Economizer
Conventional W3 not Simple
Dehumidification
a
Simple
Dehumidification
a
Simple
Dehumidification
a
Time of Day
Y3 not (W3 not) Economizer Time of Day Time of Day Economizer
Y3 not (W3 used) Simple
Dehumidification
a
Simple
Dehumidification
a
Simple
Dehumidification
a
Time of Day
Auxiliary Contact Configuration
b
:
Time of Day Economizer
Hot Gas Bypass
Dehumidification
Simple
Dehumidification
a
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