(1) Auxiliary heating operation controls another heat source that depends on the main system's operations,
which means the interlock operation shown in "b)" will be possible.
a)
b) Different Indoor unit applications that can be applied:
(2) Outdoor unit DIPSW5-4 for auxiliary heating control:
Set DIPSW5-4 when power is turned off at unit.
OFF:
Disable auxiliary Heating Function (Initial setting)
ON :
Enable auxiliary Heating Function
Indoor unit must be R410A UL model for this function to operate.
2-1. Auxiliary HEATING ON/OFF CONTROL SET-UP
(3) Determine required indoor fans speed during defrost mode:
0 20k 27k 39k 62K
None Black Blue White Red
Stopped
Setting on
remote
controller
Very Low Low High
Note: The setting will be disabled "when Heater contact signal is OFF".
CN22 input resistance ()
CN22 input (cable color)
Fan speed setting
OFF
Fan airflow rate setting
During defrost operation
ON
Wiring
CN22
a) With no auxiliary heating output the Indoor fan normally goes off to prevent cold drafts during the defrost cycles.
b) With auxiliary heating control the auxiliary heat will be on during defrost mode, thus cold drafts will not be present.
(Ducted units only)
c) For models PEFY and PDFY (Ducted) recommended to use "Black" (20K) connector.
d) For models PLFY, PCFY, PKFY and PFFY (Ductless) recommended "None", no connector required.
e) To set the fan airflow rate to be used during defrost operation, insert the resistance that is packed within the optional
adaptor cable kit (PAC-YU24HT-F) into the CN22 sensor input.
You can choose at what speed the indoor fan operates during defrost cycles bases on chart below.
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