Daikin WGZ030DW, Installation, Operation And Maintenance Manual, Page: 31 / 80

Unit Controller
www.DaikinApplied.com 31 IOM 1322-1 • WATER-COOLED SCROLL COMPRESSOR
Table 23: Digital Inputs
The following parameters are digital inputs to this controller.
C1 = Refrigerant Circuit #1, C2 = Refrigerant Circuit #2, UT = Unit, *n = Refrigerant Dependent
# Description Type Signal Signal
1 Unit OFF Switch UT 0 VAC (Stop) 24 VAC (Auto)
2 Pump Down Switch #1 C1 0 VAC (Stop) 24 VAC (Start)
3 Evaporator Water Flow Switch UT 0 VAC (No Flow) 24 VAC (Flow)
*4 Motor Protection #1 C1 0 VAC (Fault) 24 VAC (No Fault)
*4 Open
5 Open
6 Pump Down Switch #2 C2 0 VAC (Stop) 24 VAC (Start)
*7 Motor Protection #2 C2 0 VAC (Fault) 24 VAC (No Fault)
*7 Open
*8 Open
*8 Condenser Water Flow Switch
(R134a,R410A)
UT 0 VAC (No Flow) 24 VAC (Flow)
9 Phase Voltage Fault #1 (See Note 1 Below) C1 0 VAC (Fault) 24 VAC (No Fault)
10 Phase Voltage Fault #2 (See Note 1 Below) C2 0 VAC (Fault) 24 VAC (No Fault)
11 Ground Fault Prot. #1 (See Note 2 Below) C1 0 VAC (Fault) 24 VAC (No Fault)
12 Ground Fault Prot. #2 (See Note 2 Below) C2 0 VAC (Fault) 24 VAC (No Fault)
13 Remote Start/Stop UT 0 VAC (Stop) 24 VAC (Start)
*14 Condenser Water Flow Switch UT 0 VAC (No Flow) 24 VAC (Flow)
*14 Open
*15 Open
*15 Motor Protection #1 (R134a,R410A) C1 0 VAC (Fault) 24 VAC (No Fault)
*16 Open
*16 Motor Protection #2 (R134a,R410A) C2 0 VAC (Fault) 24 VAC (No Fault)
17 Ice Mode Switch UT 0 VAC (Normal) 24 VAC (Ice)
18 Heat Mode Switch UT 0 VAC (Normal) 24 VAC (Heat)
NOTE: 1. Units with single point electrical connection will have one PVM with Inputs 9 and 10 wired together. Units with multiple
point connection will have two PVM’s with Input 9 for Electrical Circuit #1 and Input 10 for Electrical Circuit #2.
NOTE:
2. Units with single point electrical connection will have one GFP with Inputs 11 and 12 wired together. Units with multiple
point connection will have two GFP’s with Input 11 for Electrical Circuit #1 and Input 12 for Electrical Circuit #2.
Table 24: Digital Outputs
The following parameters are digital outputs from this controller.
C1 = Refrigerant Circuit #1, C2 = Refrigerant Circuit #2, UT = Unit, *n = Refrigerant Dependent
# Description Type Load Output OFF Output ON
1 Alarm C1,C2,UT Alarm Indicator Alarm OFF Alarm ON
2 Evaporator Water Pump UT Pump Contactor Pump OFF Pump ON
3 Condenser Water Pump – Water Cooled = Y C1/UT Pump Contactor Fan OFF Fan ON
4 Motor Control Relay #1 = Compr#1 C1 Starter Compressor OFF Compressor ON
5 Motor Control Relay #3 = Compr#3 C1 Starter Compressor OFF Compressor ON
*6 Tower Fan #2-Water Cooled=Y C1/UT Fan Contactor Fan OFF Fan ON
*6 Motor Control Relay #5 = Compr#5
(R134a, R410A)
C1 Starter Compressor OFF Compressor ON