KE2 Temp + Air Defrost Controller

Complete Instructions Locations

Visit: http://ke2therm.com/product/ke2-temp-defrost/ and click the Link to Literature button.

QR code: KE2 Temp Literature

YouTube: KE2 Temp Videos

What's in the Kit

The following parts are included:

• (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

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 ▼ buttons to scroll through available setpoints.
• Press ENTER to view the current setting.
• Use ▲ and ▼ to change the setpoint.
• Press ENTER to move between the digits to accelerate the changes.
• Press and hold ENTER to confirm each setpoint change.
• Press BACK to escape.

Setpoints

• tS = Temperature Setpoint
• diF = Differential
• CSH = Compressor Starts/Hour, Maximum
• 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)

Only visible if CUS (custom) is selected for dPd (Defrost per day):

d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11, d12

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

*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.

Dimensions - Inches

Top View:

Width: 2.30, Height: 2.79, Depth: 2.30

Hole Diameter: 0.20

End View:

Width: 2.14

Overall Height: 4.50, Overall Width: 6.68

Wiring Diagram

Air Temp Sensor: Observe proper orientation of Ribbon Cable connection.

Controller Power Supply: Select correct voltage for controller power: 115 or 230V.

Relay Connections:

• Put jumper wire from L1 (terminal 1) to COM (terminal 5).
• 115/230 VAC
• NC, NO, COM terminals for relay.

Controller Power Supply: 120 (208-240)/1/60 CONTROLLER POWER SUPPLY

Load Connections:

• LLS (Liquid Line Solenoid) or COMPRESSOR CONTACTOR
• Neutral (L2)

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

Access Setpoint Mode:

• Press and hold 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 ENTER to move between the digits to accelerate the changes.
• Press and hold ENTER to confirm each setpoint change.
• Press BACK to escape.

Setpoints

• tS = Temperature Setpoint
• diF = Differential
• CSH = Compressor Starts/Hour, Maximum
• 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)

Only visible if CUS (custom) is selected for dPd (Defrost per day):

d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11, d12

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

*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.