February 2014
KE2 Temp + Defrost (pn 20611)
For Medium Temperature Applications with Air Defrost
Installation Manual
This reference should remain on site with the installed KE2 Temp + Defrost controller.
B
E
Q.1.20
A
What’s in the Kit - Parts List
The following parts are included in the
KE2 Temp + Defrost kit:
(1) KE2 Temp + Defrost controller
A
(4) mounting screws
B
(1) temperature sensor - 10’
C
(1) sensor ziptie
D
(1) programming sticker
E
(1) liquid tight cord grip
F
C
F
D
Supplies List
The KE2 Temp + Defrost is supplied with all of the accessories required for the controller to work, however, standard truck stock items
will also be required to install the controller. To simplify the installation, a list of items has been provided.
conduit to go between the controller and the evaporator
(2) conduit connectors (straight or elbow as required)
(4) high voltage wires matched to the load of the liquid
line solenoid/compressor and the controller.
wire labeling (numbers, colors, etc.)
additional wire ties
18 gauge twisted shielded pair (if extending sensor wires/
adding communication)
foam insulation if running wires outside the space.
silicone (for sealing any box penetrations)
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.20 February 2014
Page 2
KE2 Temp + Defrost
Quick Start Guide
Select Mounting Location
The KE2 Temp is designed for a wide range of
applications; therefore there are many potential
installation locations. Breaking down the installation location by application provides the most
helpful reference.
Application Locations
Undercounter Evaporator cabinet
Outside controlled space
Walk-in Evaporator cabinet
Adjacent to entrance
Side-by-side Above door
Walk-in Under Counter
CommercialWine Cabinet
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.
When wiring the controller rst remove the dis-
1
play by loosening 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.
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
1
KE2 Temp + Defrost
Quick Start Guide
Q.1.20 February 2014
Page 3
After the four screws have been detached from
2
the lower section, the cover may be gently
moved to the side.
Next remove the high voltage protective cover.
3 3
There are two screws holding it in place.
2
With the high voltage cover removed, the two
4
screw terminal connectors can be seen. The
2-position connector is the controller’s power
supply. The voltage selector switch should be
positioned to match the voltage supplied.
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
4
Q.1.20 February 2014
Page 4
KE2 Temp + Defrost
Quick Start Guide
Connect line (L1) to the right terminal position
5 5
and neutral (L2) to the left terminal position.
The liquid line solenoid/compressor relay ac-
6
cepts 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 solenoid 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 solenoid
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
leftmost terminal location.
Proper wiring practices must be followed. Local
wiring codes take precedence over any information in this bulletin.
6
Voltage Table
Normally Open Normally Closed
120V 240V 120V 240V
Replace high voltage shield after wiring is
7
completed.
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Outputs:
(1) Relay
Single Pole Double
Throw
FLA 30A 30A N/A 10A
LRA 98A 80A 20A 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
KE2 Temp + Defrost
Quick Start Guide
Low Voltage Connections
Temperature sensor - The temperature sensor
terminal is located on the cover’s circuit board
and is permanently attached. The temperature
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.
F
Temperature sensor
Q.1.20 February 2014
Page 5
F
Liquid tight cord grip -
snaps into conduit
opening at the top of
the controller.
Communication
The KE2 Temp includes RS-485 Modbus communication. RS-485 communication should be connected to the A, B, and Sh (shield) connections.
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.20 February 2014
Page 6
KE2 Temp + Defrost
Quick Start Guide
Programming the Controller
thermsolutions
KE2 Temp
.
Hold for manual defrost
Indicator lights
Access Setpoint mode by pressing and holding the button until
Red light - Not used
Yellow light - non-critical alarm (system running)
Green light - compressor on
Green ashing - compressor waiting on timer to start/stop
ENTER
tS (temperature setpoint) displays on the screen
Use the up and down arrows to scroll through the available setpoints.
Press to view the current setting.
ENTER
Use the up and to change the setpoint
Press to move between the digits to accelerate the changes.
Press and hold to conrm each setpoint change
Press to escape.
ENTER
ENTER
BACK
Setpoints
tS = Temperature Setpoint
diF = Dierential
CSH = Maximum Compressor Starts/Hour
dPd = Defrost Per Day
dFt = Defrost Time
HAO = High Alarm Oset
LAO = Low Alarm Oset
tAd = Temp Alarm Delay
Adr = Mod Bus Address
Unt = Units for temp display (FAH or CEL)
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Alarm Codes
When the KE2 Temp is in alarm, it noties the
user by illuminating the amber LED, and
displays the appropriate Alarm Code:
SSA = Shorted Sensor Alarm
OSA = Open Sensor Alarm
HtA = High Temperature Alarm
LtA = Low Temperature Alarm
For further explanation of Setpoints please see the
KE2 Temp + Defrost Operation Manual, O.1.3.
Q.1.20 February 2014
KE2 Temp + Defrost
Quick Start Guide
Basic Setpoints
Setpoint Description Minimum Default Maximum
tS Temperature Setpoint -50°F (-45°C) 35°F 100°F (38°C)
diF Dierential 1°F (1K) 2°F 30°F (17K)
CSH Maximum Compressor Starts/Hour 5 (O)* 6 10
dPd Defrost Per Day 0 6 12, CUS**
dFt Defrost Time 0 min 15 min 720 min
HAO High Alarm Oset 1°F (1K) 5°F 10°F (6K)
LAO Low Alarm Oset 1°F (1K) 3°F 10°F (6K)
tAd Temp Alarm Delay 1 min 90 min 180 min
Adr Mod Bus Address 1 1 247
Unt Units for temp display FAH FAH CEL
*Selecting fewer than 5 compressor starts per hour results in the starts per hour feature being turned o. The compressor will then function on
temperature only.
** Selecting CUS (custom) unlocks additional Setpoints. See Advanced Setpoints table.
Advanced Setpoints - includes setpoints only visible when CUS (custom) is selected under dPd (defrosts per day)
Page 7
Setpoint Description Minimum Default Maximum
tS Temperature Setpoint -50°F (-45°C) 35°F 100°F (38°C)
diF Dierential 1°F (1K) 2°F 30°F (17K)
CSH Maximum Compressor Starts/Hour 5 (O)* 6 10
dPd Defrost Per Day 0 6 12, CUS
d12 Start time of Defrost #12 00 dis (disabled) 23,dis (disabled)
d11 Start time of Defrost #11 00 dis 23,dis
d10 Start time of Defrost #10 00 dis 23,dis
d9 Start time of Defrost #9 00 dis 23,dis
d8 Start time of Defrost #8 00 dis 23,dis
d7 Start time of Defrost #7 00 dis 23,dis
d6 Start time of Defrost #6 00 dis 23,dis
d5 Start time of Defrost #5 00 dis 23,dis
d4 Start time of Defrost #4 00 dis 23,dis
d3 Start time of Defrost #3 00 dis 23,dis
d2 Start time of Defrost #2 00 dis 23,dis
d1 Start time of Defrost #1 00 dis 23,dis
**CUS - Setpoints display when CUS selected
dFt
HAO
LAO
tAd
Adr
Unt
tod Time of Day 0.0 12.0 23.5
Defrost Time 0 min 15 min 720 min
High Alarm Oset 1°F (1K) 5°F 10°F (6K)
Low Alarm Oset 1°F (1K) 3°F 10°F (6K)
Temp Alarm Delay 1 min 90 min 180 min
Mod Bus Address 1 1 247
Units for temp display FAH FAH CEL
*Selecting fewer than 5 compressor starts per hour results in the starts per hour feature being turned o. The compressor will then function on
temperature only.
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.20 February 2014
Page 8
KE2 Temp + Defrost
Quick Start Guide
Dimensions - Inches
Top View
1.09
4.50
0.20
Hole
Wiring Diagram
Observe proper orientation of
Ribbon Cable connection
6.68
End View
2.30
2.79
2.30
.245
2.14
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.20 February 2014 supersedes bulletin Q.1.20 February 2013 and all prior publications.
209 Lange Dr. . Washington, MO 63090
KE2 Therm Solutions
1-888-337-3358 . www.ke2therm.com
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