Water source heat pump module, Installation & wiring, Technical guide 6 important wiring considerations – Orion System Water Source Heat Pump Module Tulsa User Manual
Page 6: Stand-alone wiring, 1 amp maximum load

Water Source Heat Pump Module
Technical Guide
6
Important Wiring Considerations
Please read carefully and apply the following information when wiring
the Water Source Heat Pump Module:
1. To operate the Water Source Heat Pump Module in Stand-
Alone mode, you must connect power to the 24 VAC input
terminal block. Do not allow wire strands to stick out and
touch adjoining terminals. This could potentially cause a short
circuit.
2. The 1 to 5 VDC signals for the Compressor modulation need
to use 18-gauge shielded twisted pair cable, and the Drain wire
must be the GND signal.
3. All 24 VAC wiring must be connected so that all ground
wires remain common. Failure to follow this procedure can
result in damage to the module and connected devices.
Installation & Wiring
4. Be sure all modular wiring harness connectors are seated
fi rmly in their respective modular connectors on the circuit
board.
5. All wiring is to be in accordance with local and
national electrical codes and specifi cations.
6.
Check all wiring leads at the terminal block for tightness.
Be sure that wire strands do not stick out and touch adjacent
terminals. Confi rm that all transducers required for your
system are mounted in the appropriate location and wired into
the correct terminals.
Stand-Alone Wiring
To operate the Water Source Heat Pump Module as Stand Alone, con-
nect the Module to a 24 VAC power connection with an appropriate VA
rating. See Figure 3 for wiring.
Figure 3: Water Source Heat Pump Module as Stand-Alone
NOTE:
NORMALLY
OPEN AND RATED FOR 24 VAC POWER ONLY
ALL RELAY OUTPUTS ARE
COMPRESSOR A2 ENABLE
COMPRESSOR A1 ENABLE
GND
T2
T1
BIN2
BIN1
R
E
R1
R4
R5
R3
R2
COMM
COMPRESSOR A1 SUCTION
PRESSURE TRANSDUCER
BK
RD
WH
WATER POF SYSTEM A CONTACT
COMPRESSOR A1 ENABLE CONTACT
COMPRESSOR A2 ENABLE CONTACT
BK
RD
WH
BK
RD
WH
BK
RD
WH
WATTMASTER CONTROLS
COMPRESSOR B1 ENABLE
COMPRESSOR B2 ENABLE
ALARM OUTPUT
COMPRESSOR B1 ENABLE CONTACT
COMPRESSOR B2 ENABLE CONTACT
HEAT ENABLE CONTACT
WATER POF SYSTEM B CONTACT
BIN3
BIN5
BIN4
BIN6
BIN7
COM
LEAVING WATER TEMPERATURE
FOR SYSTEM B
LEAVING WATER TEMPERATURE
FOR SYSTEM A
NOTE:
OUTPUTS ARE NOT USED ON
STAND ALONE APPLICATIONS
DIP SWITCH
NOT USED FOR
STAND ALONE
APPLICATION
HVAC UNIT CONNECTIONS
COMPRESSOR A2 SUCTION
PRESSURE TRANSDUCER
COMPRESSOR B1 SUCTION
PRESSURE TRANSDUCER
COMPRESSOR B2 SUCTION
PRESSURE TRANSDUCER
GND
24 V
A
C
- 1 AMP MAXIMUM LOAD
OE334-23-WPM
Water Source Heat Pump
Module
WattMaster Label
#LB102069-A
Rev.: 1B
E-BUS
Connector
E-BUS
Connector
+5V
PRES
GND
+24
VAC
GND
BIN 1
BIN 2
BIN 3
BIN 4
BIN 5
BIN 6
BIN 7
COM
SUCTION
PRESSURE
TRANSDUCERS
#1 thru #4
COMP. 1 ENABLE
COMP. 2 ENABLE
COMP. 3 ENABLE
WSHP Protection Module
Orion No.: OE334-23-WPM
COMP. 4 ENABLE
HEAT ENABLE
H2O POF #1
H2O POF #2
COMMON
T 1
T 2
GND
LEAVING WATER TEMP 1
GROUND
LEAVING WATER TEMP 2
LED BLINK CODES
LED NAME
STATUS
OFF MODE
1
COOLING MODE
2
HEATING MODE
3
LED NAME
ALARM
LOW SUCTION PRESSURE
1
COMPRESSOR LOCKOUT
2
WATER FLOW FAILURE
3
LOW LEAVING WATER TEMP.
4
LED NAME
PRES 1-4
SENSOR DETECTED
ON
NO SENSOR DETECTED
OFF
LOW SUCTION PRESSURE
1
COMPRESSOR LOCKOUT
2
AO1
A2O
RELAY CONTACT RATING
IS 1 AMP MAX @ 24 VAC
COMP. #2 ENABLE
COMP. #1 ENABLE
R1
R2
R3
R4
RC
RELAY COMMON
COMP. #3 ENABLE
COMP. #4 ENABLE
SYSTEM A - CNTRLR C2
SYSTEM B - CNTRLR C2
+5V
PRES
GND
NOT USED
DIGITAL COMP #1 THRU #4
NON-DIGITAL COMP #1 THRU #4
COPELAND CNTRLR P6
COPELAND CNTRLR P5
AAON No.: R90680
WattMaster Label
#LB102069-A
Rev.: 1F
E-BUS
Connector
E-BUS
Connector
+24
VAC
GND
BIN 1
BIN 2
BIN 3
BIN 4
BIN 5
BIN 6
BIN 7
COM
COMP. A1 ENABLE
COMP. A2 ENABLE
COMP. B1 ENABLE
WSHP Module
Orion No.: OE334-23-WPM-A
AAON No.: R88350
www.aaon.com
www.orioncontrols.com
COMP. B2 ENABLE
HEAT ENABLE
WATER POF A
WATER POF B
COMMON
T 1
T 2
GND
LEAVING WATER TEMP A
GROUND
LEAVING WATER TEMP B
LED BLINK CODES
LED NAME
STATUS
OFF MODE
1
COOLING MODE
2
HEATING MODE
3
LED NAME
ALARM
LOW SUCTION PRESSURE
1
COMPRESSOR LOCKOUT
2
WATER FLOW FAILURE
3
LOW LEAVING WATER TEMP.
4
LED NAME
PRES 1-4
SENSOR DETECTED
ON
NO SENSOR DETECTED
OFF
LOW SUCTION PRESSURE
1
COMPRESSOR LOCKOUT
2
AO1
A2O
STAGE 1- COMP. A1/B1-
STAGE 2 - COMP. A2/B2
DIGITAL COMP. A1, A2, B1, B2
RELAY CONTACT RATING
IS 1 AMP MAX @ 24 VAC
COMP. A2 ENABLE
COMP. A1 ENABLE
R1
R2
R3
R4
R5
RC
RELAY COMMON
COMP. B1 ENABLE
COMP. B2 ENABLE
ALARM OUTPUT
CONNECT TO CNTLR C2 TERM.
+5V
PRES
GND
+5V
PRES
GND
SUCT. PR. SENSOR
PRES 1=A1, PRES 2=A2
PRES 3=B1, PRES 4=B2
NOT USED
PRES 1=A1, PRES 2=A2
PRES 3=B1, PRES 4=B2
+5 NOT USED, PRES TO P6 & GND TO P5
+5 TO RED, PRES TO WHT & GND TO BLK
DIGITAL COMRESSORS
NON-DIGITAL COMPRESSORS
LW: 36ºF HSP: 100 PSIG