Q.3.20 (Q.1.20) October 2016
Page 3
© Copyright 2016 KE2 Therm Solutions, Inc., Washington, Missouri 63090
KE2 Temp
+ Defrost
(pn 20611)
For
Medium Temperature
Applications with
Air Defrost
Installation Manual
6
7
Replace high voltage shield after wiring is completed.
The liquid line solenoid/compressor relay accepts a variety of input
voltages and is not required to match the controller’s input. See table
for relay ratings. The relay uses the 3-position screw terminal to make
the connection on the board. This relay is designed to control smaller
compressors directly. It may also control either the liquid line sole-
noid or as a pilot to the compressor contactor. When connecting the
wires to the relay, the controller will be breaking one leg of the power.
One leg of incoming power (L1) supply for the liquid line solenoid
should be connected to the common terminal of the liquid line sole-
noid relay, the right most terminal connection. The other leg of the
incoming power (L2) should be connected directly to the solenoid
lead. The remaining lead from the solenoid should be connected to
the NO (normally open) terminal, the left most terminal location.
Proper wiring practices must be followed. Local wiring codes take
precedence over any information in this bulletin.
6
Voltage Table
Outputs:
(1) Relay
Single Pole
Double Throw
Normally Open Normally Closed
120V
240V
120V
240V
FLA
30A
30A
N/A
10A
LRA
98A
80A
N/A
20A
Resistive
N/A
30A
N/A
30A
Horsepower
1 hp
2 hp
1/4 hp
1/2 hp
Pilot Duty
800VA
720VA 290VA
360VA
Remote Monitoring, Control, Alarm Notifications
The KE2 Temp includes RS-485 Modbus communications, and can
now be accessed remotely using the KE2 Local Area Dashboard and
Alarms (KE2 LDA). See page 4 for further details.
Low Voltage Connections
Temperature sensor - The temperature sensor terminal is located on
the cover’s circuit board and is permanently attached. The tempera-
ture sensor input consists of the right two terminals. Although the
terminals are labeled ‘+’ and ‘ - ‘ the sensor is not polarized and may
be connected in either orientation.
The sensor should be fed through the top conduit connection using
liquid tight cord and before being attached to the board. If Modbus
communication is being used, a water tight type conduit maybe
used instead.
Liquid tight cord grip -
snaps into conduit
opening at the top of
the controller.
Temperature sensor
D
