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PRDCAM
AHU Communication Kit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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AHU COMMUNICATIONS KIT INSTALLATION
Discharge Air Temperature Controller
Case 4: One AHU / DDC by Contact Signal
IDU communication line
Discharge air
sensor
Pipe in & out
sensor
ODU communication line
Module communication line
Pipe in & out
sensor
Pipe in & out
sensor
Pipe in & out
sensor
Communication
module
Master
02:00
RA temp.
controller
Master
02:01
RA temp.
controller
Master
02:02
RA temp.
controller
Master
02:03
Outdoor
Unit
00
Main
module
001
Modbus
Power line
Contact signal
L N
Remote
Controller
1)
Discharge air temp. controller
Note:
1. RemotecontrollershouldbeconnectedtoPAHCMS000.
2. LGCentral controlleraddressing fordischargeairtemp.controllershould beset to thesameaddress as themainmodule’s
address.
3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional
PAHCMR000 mustbe set with an orderincreasing by1. Also ODU address must be the same as the paired AHUcontroller.
4. All PAHCMR000 units need to be set as Master mode.
DDC
LG
centralized
controller
2)
Remote controller connected to PAHCMR000 can only
monitor status.