Engineering

EDUS181520C Control Devices
Options 579
5
5.10 <KRP1C75> Adaptor for Wiring
C: 2P263038-1E
PCB support
Adaptor
X2M
X1 (or X3)
X2 (or X4) X2 (or X4)
X1 (or X3)
X1M
<Caution>
Indoor unit PCB
Y1
YC YC
Y2
X2A
X1A
~
~
~
24VAC
Quantity
×4
Harness
(KRP1C75)
Note)1 Connector No. X33A
Accessories
Clamp
Example: Interlock
Shape
Name
PCB support
×1
Electric wiring
1 Thermo-ON and Fan ON status
×1×1
(KRP1BA101)
Installation manual
24VAC
(KRP1BA101)
Adaptor for wiring
Check if the following accessories are included in the kit.
2 Interlocking Heater and Humidifier
×3
Installation
Example: Obtaining status
Note)1
24VAC
•
Refer to the wiring diagram attached to the indoor unit before
attempting to wire.
[Make sure wires to units do not pass over the PCB when wiring.]
•
Wire the adaptor to the indoor unit as shown below.
•
Thermo-ON status
Contact terminals X1 and X2 close
while the indoor unit is Thermo-ON
(call for cooling or heating)
•
Fan ON status
Contact terminals X3 and X4
close when indoor unit fan is
ON
Dry contact
to BMS or
Monitoring
panel
24VAC
Relay or
Actuator
24VAC
Heater
Relay
24VAC
Humidifier
Interlock
Relay
•
Heater output
•
Auxiliary heater output with
heat pump heating
•
Primary heater output when
heat pump lockout enabled
•
Humidifier output
•
Energized while heating
Thermo-ON (call for heating)
•
Installation differs according to models as shown below.
•
Do not bundle low and high voltage wires together.
•
Bundle any excess wires with the attached clamps so as to
keep loose wires off the indoor unit PCB.
Lid of
installation box
Installation box
for adaptor PCB
•
All wiring must be performed by an authorized electrician.
•
For electric wiring work, refer to also "Wiring diagram" attached to the control box lid and this manual.
•
All wiring must be worked after shutting down power supply.
•
All field supplied parts and materials and electric works must conform to local codes.
•
A circuit breaker capable of shutting down power supply to the entire system must be installed.
Names of parts
F2U
Harness
F1U
X1A
X3
YC
X2A
X2
Y2
X1
Y1
X4
Terminals for operation status
Terminals for controlling external heater, humidifier, and other equipment.
This function can not be used.