4-21
OPTIONAL FUNCTION
(4.2 Indoor Unit)
4.2.9 Precooling/Preheating Operation (KPI Series Only)
This function is delayed to start the total heat exchanger at interlock with air conditioner.
(1) 30 minutes Period
Total heat exchanger starts 30 minutes later after starting air conditioner.
This function is set by optional function on remote control switch (PC-P1H).
NOTES:
1. This function is not available at ventilation setting (single operation of total heat exchanger).
2. Remote control switch is needed to set this function.
(2) 60 minutes Period
Total heat exchanger starts 60 minutes later after starting air conditioner.
This function is set by optional function on remote control switch (PC-P1H).
NOTES:
1. This function is not available at ventilation setting (single operation of total heat exchanger).
2. Remote control switch is needed to set this function.
4.2.10 Picking Up Operation Signal
By utilizing this function, the cooling or heating operation mode can be changed by giving a contact signal
from the outside to the unit. The operation mode is followed by the field-supplied switch or the remote
control switch, which is used last.
Required Parts for Modofication
(1) Picking Up Operation Signal
This function is utilized to pick up the operation signal. By this function, operation signal at a remote
place can be checked, or operation at the fresh air intake fan motor can be interlocked. Connect
wires as shown below. Please note that the contact of the auxiliary relay “RYa” is closed when this
operation signal is given.
(In Case of Giving Operation Signal to 1# and 3# of CN7)
Parts Name Specification / Model
Auxiliary Relay * OMRON made High Power Relay Model LY2F DC12V
Connector Cable PCC-1A (3P Connector Cable)
*: Do not use the relay with diode.
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