Figure 7.
Unit power wiring
Installation
WSHP-SVX02E-EN
15
Control Power Transformer
Transformers are equipped with internal circuit breakers.
If a circuit breaker trips, turn OFF all power to the unit
before attempting to reset it. The transformer is located in
the control box.
Figure 8.
Field connections - low voltage terminal
board - EXW*060
Figure 9.
Field connections - low voltage terminal
board - EXW*120 and EXW*240
Controls Using 24 Vac
Before installing any wire, refer to the electrical access
locations on the unit dimensions on Dimensions and
Clearances chapter.
•
Ensure that the AC control wiring between the controls
and the unit’s termination point does not exceed three
(3) ohms/conductor for the length of the run.
Note: Resistance in excess of 3-ohms per conductor may
cause component failure due to insufficient AC
voltage supply.
•
Check all loads and conductors for grounds, shorts,
and mis-wiring.
•
Use copper conductors unless otherwise specified.
•
Do not run the AC low voltage wiring in the same
conduit with the high voltage power wiring.
Table 4.
24V AC conductors
Distance from unit to control
Recommended wire size
000-460 feet
18 gauge
461-732 feet
16 gauge
733-1000 feet
14 gauge
Table 5.
Deluxe controller diagnostic LEDs
Color: Green
Color: Red
LED1
LED2
LED3
Controller Mode
OFF
OFF
OFF
Control OFF
ON
OFF
OFF
Normal/Compressor OFF
ON
OFF
FLASH
Anti-short Cycle
ON
OFF
ON
Normal/Compressor ON
FLASH
ON
OFF
Brownout Condition
ON
FLASH
FLASH
Soft Lockout
(low pressure)
ON
FLASH
FLASH
Soft Lockout (high
pressure)
ON
ON
ON
Manual Lockout
(low pressure)
ON
ON
FLASH
Manual Lockout
(high pressure)
ON
FLASH
OFF
Manual Lockout
(condensate overflow)
ON
ON
OFF
Compressor Disable
UNIT POWER WIRING
3 PHASE POWER SUPPLY
1TB1
L3 ---------------------
--------------- L3
L2 ---------------------
--------------- L2
L1 ---------------------
--------------- L1
UNIT POWER WIRING
1 PHASE POWER SUPPLY
1TB1
L2 ---------------------
--------------- L2
L1 ---------------------
--------------- L1
EXW*060
1TB2
1
-------------------------------------24VAC
2
-------------------------------------UNUSED
3
-------------------------------------COMPRESSOR 1 & WATER ISOLATION VALVE
4
-------------------------------------UNUSED
5
-------------------------------------REVERSING VALVE
6
-------------------------------------24VAC COMMON & WATER ISOLATION VALVE
7
-------------------------------------COMPRESSOR DISABLE
8
-------------------------------------COMPRESSOR DISABLE
9
-------------------------------------ALARM
10 -------------------------------------ALARM
11 -------------------------------------UNUSED
12 -------------------------------------UNUSED
13 -------------------------------------UNUSED
14 -------------------------------------UNUSED
15 -------------------------------------UNUSED
16 -------------------------------------UNUSED
EXW*120 & 240
1TB2
1
-------------------------------------24VAC
2
-------------------------------------UNUSED
3
-------------------------------------COMPRESSOR 1 & WATER ISOLATION VALVE
4
-------------------------------------COMPRESSOR 2
5
-------------------------------------REVERSING VALVE
6
-------------------------------------24VAC COMMON & WATER ISOLATION VALVE
7
-------------------------------------COMPRESSOR DISABLE
8
-------------------------------------COMPRESSOR DISABLE
9
-------------------------------------ALARM
10 -------------------------------------ALARM
11 -------------------------------------UNUSED
12 -------------------------------------UNUSED
13 -------------------------------------UNUSED
14 -------------------------------------UNUSED
15 -------------------------------------UNUSED
16 -------------------------------------UNUSED
