KE2 Temp + Air Defrost
For Medium Temperature Applications with Air Defrost
Condensed Quick Start Guide PN 20611
Q.3.65 April 2022
Complete Instructions Locations
Visit: http://ke2therm.com/product/ke2-temp-defrost/ and click the Link to Literature button.
QR code for KE2 Temp Literature:
[QR Code]
YouTube KE2 Temp Videos:
[YouTube Link]
What's in the Kit
- (1) KE2 Temp + Air Defrost controller
- (1) temperature sensor - 45"
- (1) sensor ziptie
- (1) liquid tight cord grip
- (4) self-tapping mounting screws
- (2) screws for high voltage shield
- (1) programming sticker
- (1) high voltage shield
Supplies List
The accessories required for the controller to work are supplied. However, some truck stock items may be needed. See the following list:
- Conduit to go between the controller & 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)
- Cat5e or cable rated for RS-485 communication (if adding communication)
- Foam insulation (if running wires outside the space)
- Silicone (for sealing any box penetrations)
Controller Navigation
Indicator Lights:
Red blinking - Real Time Clock battery needs to be replaced
Yellow light - non-critical alarm (system running)
Green light - Liquid Line Solenoid (LLS) relay energized
Green blinking - waiting on minimum run or off timer to start/stop refrigeration
Accessing Setpoints:
- Access Setpoint mode by pressing and holding ENTER until tS (temperature setpoint) displays on the screen.
- Use ▲ and ▼ to scroll through available setpoints.
- Press ENTER to view the current setting.
- Use ▲ and ▼ to change the setpoint.
- Press and hold ENTER to confirm each setpoint change.
- Press BACK to escape.
Setpoints
- tS = Temperature Setpoint
- diF = Differential
- CSH = Max. Compressor Starts/Hour
- dPd = Defrost Per Day
- dFt = Defrost Time
- HAO = High Alarm Offset
- LAO = Low Alarm Offset
- tAd = Temp Alarm Delay
- Adr = Mod Bus Address
- Unt = Units for temp display (FAH or CEL)
Alarms - When amber LED is lit:
- SSA = Shorted Sensor Alarm
- OSA = Open Sensor Alarm
- HtA = High Temp Alarm
- LtA = Low Temp Alarm
For a complete list of setpoints and descriptions see Q.3.20.
Basic Setpoints
| Setpoint Description | Minimum | Default | Maximum |
|---|---|---|---|
| tS Temperature Setpoint | -50°F (-45°C) | 35°F | 100°F (38°C) |
| diF Differential | 1°F (1K) | 2°F | 30°F (17K) |
| CSH Max. Comp. Starts/Hr. | 5 (Off)* | 6 | 10 |
| dPd Defrost Per Day | 0 | 6 | 12, CUS** |
| dFt Defrost Time | 0 min | 15 min | 720 min |
| HAO High Alarm Offset | 1°F (1K) | 5°F | 10°F (6K) |
| LAO Low Alarm Offset | 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 off. The compressor will then function on temperature only.
** Selecting CUS (custom) unlocks additional Setpoints. See Advanced Setpoints table.
Wiring Diagram
Observe proper orientation of Ribbon Cable connection.
[Diagram of Controller Connections]
Select correct voltage for controller power: 115 or 230V
Put jumper wire from L1 (terminal 1) to COM (terminal 5)
120 (208-240)/1/60 CONTROLLER POWER SUPPLY
Neutral (L2)
LLS (Liquid Line Solenoid) or COMPRESSOR CONTACTOR
Dimensions - Inches
[Diagram showing dimensions: Top View with measurements 1.09, 2.30, 2.79, 2.30; End View with measurements 4.50, 6.68, 2.14, 0.20 Hole]
Copyright 2022 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.3.65 April 2022 supersedes all prior publications
KE2 Therm Solutions, 12 Chamber Drive, Washington, MO 63090, 1-888-337-3358, www.ke2therm.com
KE2 Temp + Air Defrost |
