York HIDS006B21S Service Manual page 146

EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
(6) Picking Up Heating Thermo-ON Signal [ Output Setting: Code (06) ]
This function is utilized to pick up a thermo-ON signal during the heating operation. An example of
basic wiring is shown below. The contact of the auxiliary relay "RYa" is closed during thermo-ON in
heating operation. Use this function for operation of a circulator or a humidifier.
NOTE:
1. Output terminal (CN8) is no longer available for Ducted Medium Static type and Ducted Slim type indoor
units produced in April 2018 or later.
(7) Picking Up Total Heat Exchanger Signal [ Output Setting: Code (07) ]
This function is utilized to pick up a total heat exchanger signal during the ventilation mode selected
with a wired controller. An example of basic wiring is shown below.
NOTE:
These are examples using general-purpose relay.
5-16
CN8 1 Connector
CN8
2 1
3 P Connector
Picking Up Operation Signal
(Example: Heating Thermo-ON Output is set to terminals 1 and 2 of CN8
CN7 Connector
CN7
1
3
3 P Connector
Picking Up Total Heat Exchanger Signal
(Example: Cooling Thermo-ON Output is set to terminals 1 and 3 of CN7.)
Indoor Unit PCB
Auxiliary Relay
RYa
RY
Indoor Unit PCB
Auxiliary Relay
RYa
RY
1 .)
SM-18001-rev.1