© Copyright 2021 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.3.20 (Q.1.20) May 2021
Page 2
KE2 Temp
+ Air Defrost
(pn 20611)
For
Medium Temperature
Applications with
Air Defrost
Installation Manual
Wiring the Controller
The KE2 Temp was designed with simplicity in mind. The controller accepts 120V / 208-240V to power the controller and 12V - 240V solenoid
voltage via the liquid line solenoid relay through the lower conduit connection. The temperature sensor and communication wires are
attached via the upper conduit connector.
With the high voltage cover removed, the two screw terminal
connectors can be seen. The red 2-position connector is the
controller’s power supply. The voltage selector switch should
be positioned to match the voltage supplied.
4
When wiring the controller first remove the display by loos-
ening the four corner screws. The display is connected to the
lower board by a short ribbon cable.
Caution: The board may be damaged if excessive force
is used when removing the cover.
1
After the four screws have been detached from the lower sec-
tion, the cover may be gently moved to the side.
2
Next remove the high voltage protective cover. There are two
screws holding it in place.
3
5
Connect line (L1) to the left most terminal position (1) and
neutral (L2) to terminal position (2).
6
The liquid line solenoid (LLS) 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. It may control
the liquid line solenoid or act as a pilot relay for the compressor
contactor. The controller will be breaking one leg of power to
the LLS.
è
STEP 6 is continued on the next page
Voltage
Selector
1 2 3 4 5
1 2 3 4 5
