2
Figure 1. Installing
Compressor Defender™
to AC Disconnect Box.
Compressor
Defender™ Housing
AC
Disconnect
Box
Top
Side
(L/R)
Note:
Do not mount the
device at the bottom
of the disconnect box
24 VAC
Thermostat Wire
Nipple
Locknut
Gasket
Black Wire
Black Wire
White Wire
AC Disconnect Box
24 VAC
Y1
Y1
Figure 2. Mounting
Compressor Defender™
in condensing unit.
Sheet
Metal Screw
3. Connect the white wire from the
Compressor Defender™
to the neutral connection in the panel as
shown in Figure 3.
4. Connect the two black wires to the load side of the circuit breaker that is supplying power to the
compressor/pump as shown in Figure 3.
NOTE:
The black wires may be connected to the line or load side from the AC disconnect.
5. Connect the supplied 24 VAC thermostat wire. Splice
Compressor Defender™
thermostat control
wires into the Y1 terminal thermostat wire as shown in Figure 4.
6. Ensure all mounting and electrical connections are correct and securely fastened.
7. Reconnect condensing unit power at circuit breaker(s) and at the 24 VAC thermostat circuit. The
green LED flashes to indicate the unit is in short cycle delay.
See Tables 1 and 2 for explanation of LED indicator status.
24 VAC
Y1
Y1
24 VAC
Typical 208/240 VAC Application
Black
White
Black
AC Disconnect
Line
Load
Load
Line
Line
Neutral/
Ground
Line
NOTE:
Both black wires
connect to Line.
Line
Neutral
Ground
Grounded/
Neutral
(WHITE)
Line
(BLACK)
Line
(BLACK)
120 VAC
0 VAC
120 VAC
120 VAC two wire single phase
with separate ground.
Found at connections for individual
pieces of equipment, such as pumps,
single phase motors, and HVAC
applications.
Typical 120 VAC
Application
Y1
Y1
Figure 3 Installing Surge Protector wiring.
NOTE:
Both black wires
connect to Line.
Line
Neutral
WHITE
BLACK
120 VAC two wire single phase
with separate ground.
Found at connections for individual
pieces of equipment, such as pumps,
single phase motors, and HVAC
applications.
BLACK w/WHITE SLEEVE
24 VAC
Y1
Y1
Typical 120 VAC Application
Compressor Defender™
Maintenance:
• AC Voltage SPD:
• Periodically check
Compressor Defender™
to ensure green indicator LED is ON. If green LED is
OFF, protection has diminished and the
Compressor Defender™
should be replaced immediately.
Figure 4. 24 VAC Contractor Wiring.
Compressor Contactor
24 VAC
C
Y1
Contactor Wiring
From
Compressor
Defender
™
BLA
CK
RED
2
