KE2 EvapPanel Quick Start Guide

Parts List

• Kit #21958 KE2 Evap Panel (Single)
• Kit #21959 KE2 Evap Panel (Double)

Included Parts:

• (1) KE2 Evap Panel
• (3) 40' colored temperature sensors (Note: All sensors are interchangeable; colors are for identification only)
• (1) KE2 Terminal Board with fuses
• (2) 1/2" plastic knockout plugs
• (1) air sensor mount
• (4) wire ties (rated for low temp)
• (1) 2' Ethernet cable

Kit #21959 includes: (2) KE2 Evap OEM controllers & displays, (6) 40' colored temperature sensors, (2) KE2 Terminal Boards, (4) 1/2" plastic knockout plugs, (2) air sensor mounts, and (8) wire ties.

Supplies List (Required for Installation):

• Conduit for controller and evaporator (high & low voltage)
• Conduit connectors
• High voltage wires matched to the load
• Spade Connectors
• Wire labeling

Popular Accessories:

• KE2 Wire Harness (10', 25', 40')
• Door Switch

Further information on accessories can be found in the KE2 Condensed Catalog 411.

Controller Webpages

The controller has a built-in webpage for service. Access methods include:

• Plugging the controller into a KE2 Therm communication accessory (e.g., KE2-Edge Manager).
• Connecting the controller to a network.
• Using the KE2 Service Tool App with an Ethernet dongle.
• Plugging a laptop directly into the controller.

Login requires User Name: ke2admin and Password: ke2admin. The password must be changed upon first login.

Installation Steps

Installation involves mounting the panel, wiring high voltage connections, wiring low voltage connections (sensors, transducer, EEV), and inputting initial setpoints.

Additional Literature

Visit: https://ke2therm.com/literature/literature-ke2-evap-oem/

Or use QR code.

YouTube

Visit the KE2 Therm YouTube channel for installation and setup videos.

• Video 068: How to Determine Proper Coil Sensor Location
• Video 069: How to Properly Install a Coil Sensor

youtube.com/ke2therm

High Voltage Wiring - Wiring Schematic w/ KE2 Terminal Board & Wiring Harness

Diagram showing high voltage wiring connections including Chassis Ground, Fan Relay, Liquid Line Solenoid/Comp. Contactor Relay, Defrost Relay, Evaporator Fans, Heaters, and Supply Voltage connections.

Key Components:

• KE2 Evap Panel
• KE2 Terminal Board
• Wiring Harness
• Heater Safety/High Limit Switch

Sensor Installation - Return Air Temp Sensor

Install the air temp sensor using the air sensor mount approximately 2/3 down from the top of the evaporator, and 8-12 inches from the coil in the return air of the evaporator.

Color Coding Recommendation:

• Green (Aux1) & Yellow (TCoil) for Coil Sensors
• Blue (TAir) for Air Sensor

Sensor Installation - Coil Temp Sensors

IMPORTANT: Determine coil sensor locations by verifying where frost is last to disappear on the coil during a defrost cycle. Typically, this is on the air exiting side, near the edges, approximately 1" to 1-1/2" away from the sides, and within the top or bottom 1/3rd of the evaporator. Avoid installing sensors on U-bends or near heating elements.

To prevent sensor wire damage, insert the plug into the coil housing and puncture the plug to insert the sensor wire. For most applications, the sensor should rest against a circuit tube between the evaporator fins. Pinch fins gently around the probe for secure placement and thermal ballast.

If sensor cables need to be extended, use 18 gauge twisted shielded pairs (max recommended length: 100ft).

Intro Mode

The controller enters Intro Mode upon first power-up. This mode requires configuring essential setpoints to begin system control.

Steps:

1. Press < or > to cycle through Control Types. Press and hold ENTER for 3 seconds when the correct type is displayed.
2. If AdE or EdE is selected, choose the Expansion Valve Type by pressing < or >. Press and hold ENTER for 3 seconds to save.
3. If AdE or EdE was selected, select the refrigerant by pressing < or >. Press and hold ENTER to save.
4. Set KE2 SMARTACCESS to ENABLED or DISABLED. Press < or > to select, then press and hold ENTER.

Note: If a KE2-Edge Manager (KE2-EM) is on site, set KE2 SmartAccess to DISABLED.

Refrigerants:

Valve Types:

• tHr (MECHANICAL): Traditional Thermostatic Expansion Valve.
• PLS (PULSE): Pulse Width Modulation (PWM) Valve.
• rS (KE2 RSV): KE2 Therm's Refrigeration Stepper Valve.
• SEI (SER/SEI 1 TO 20): 12 VDC Bipolar Sporlan EEV with 1,600 max steps, 200 steps/second.
• SER (SER AA TO L): 12 VDC Bipolar Sporlan EEV with 2,500 max steps, 200 steps/second.
• CrL (CAREL): 12 VDC Bipolar Carel EEV with 480 max steps, 50 steps/second.

Note: Custom valve setups are available via the webpage interface or KE2 Combo Display.

Setpoints Menu

Press and hold BACK for 3 seconds to enter the Setpoints Menu.

Use < and > to scroll through setpoints. Press ENTER to view the current setting. Press < or > to change the setpoint value. Press ENTER momentarily to move between digits. Press and hold ENTER to save changes. Press BACK to escape.

Setpoints:

• tS: ROOM TEMP SETPOINT
• rFG: REFRIGERANT
• dtY: DEFROST TYPE
• Edt: VALVE TYPE
• ind: DEFROST MODE
• dPd: DEFROST/DAY
• dtP: DEFROST TERM TEMP
• dEF: DEFROST PARAMETER
• dtL: MAX DEFROST TIME
• drn: DRAIN TIME
• rFt: REFRIG FAN TYPE
• FtS: MIN FAN SWITCH TIME
• Stt: SUPERHEAT SETPOINT
• LPt: MAX TIME FOR LPCO
• HTn: ELECTRIC DEFROST MODE
• HAO: HIGH TEMP ALARM OFFSET
• HAD: HIGH TEMP ALARM DELAY
• LAO: LOW TEMP ALARM OFFSET
• LAD: LOW TEMP ALARM DELAY
• dAd: DOOR ALARM DELAY
• AU1: AUX IN 1 MODE
• A1A: AUX IN 1 STATE
• AU2: AUX IN 2 MODE
• A2A: AUX IN 2 STATE
• AU3: AUX IN 3 MODE
• A3A: AUX IN 3 STATE
• tS2: 2ND ROOM TEMP
• 10t: 0 TO 10 VDC MODE
• tEt: MULTI EVAP MODE
• PdE: PAIRED DEFROST MODE
• LLt: LEAD/LAG TIME
• Unt: TEMP UNITS
• EdF: EXTREME TEMP DIFF
• diA: DIAGNOSTICS MODE
• FAC: FACTORY RESET
• PAS: WEB PASSWORD RESET
• PAR: PAIR L/L
• UnP: UNPAIR L/L
• SA: SMART ACCESS
• dHC: DHCP

See Q.1.45 for setpoint descriptions.

Variables Menu

Variables:

• tS: ROOM TEMP
• CLt: COIL TEMP
• SYS: SYSTEM MODE
• SHt: SUPERHEAT
• PrS: SUCTION PRESSURE
• SUt: SUCTION TEMP
• SAt: SATURATION TEMP
• oPn: VALVE % OPEN
• LLS: LLS RELAY
• dEr: DEFROST RELAY
• FtR: FAN RELAY
• AU1: AUX 1 STATUS
• AU2: AUX 2 STATUS
• AU3: AUX 3 STATUS
• iP1: IP OCTET 1
• iP2: IP OCTET 2
• iP3: IP OCTET 3
• iP4: IP OCTET 4
• PnH: FIRMWARE PARTNUM
• PnL: FIRMWARE PARTNUM
• Fir: FIRMWARE VERSION

Alarms (abbreviated)

• PSA: PRESSURE SENSOR
• SSA: SUCTION TEMP SENSOR
• ASA: AIR TEMP SENSOR
• CSA: COIL TEMP SENSOR
• HSH: HIGH SUPERHEAT
• LSH: LOW SUPERHEAT
• HtA: HIGH AIR TEMP
• LtA: LOW AIR TEMP
• EdF: EXCESS DEFROST
• dtt: DEFR TERM ON TIME
• dor: DOOR SWITCH
• COA: COMMUNICATION ERROR
• A1A: AUX 1 SENSOR
• CLL: LEAD/LAG COMM ERROR

See Q.1.45 and Q.1.61 for full list of alarms.

Manual Defrost

Press and hold ENTER and < to initiate Defrost. The defrost cycle terminates automatically based on coil temperature. Pressing and holding ENTER and > during defrost skips to the drain (drip) mode.

Note: Fans may run for the first several minutes of electric defrost before fans turn off and heaters energize.

Manual Valve Control

Press and hold BACK and < to switch to EEV Manual Control mode. The open valve percentage is displayed. Press > to open the valve and < to close it. The controller attempts to move the valve in the indicated direction. Press ENTER to advance to the next digit. Press BACK to exit manual mode and return to automatic control.

System Off (Pumpdown)

Press and hold BACK and ENTER simultaneously until Sof is displayed. The controller will not refrigerate or defrost until system off is cleared or one hour passes. Press and hold BACK and ENTER again to exit system off. Power cycling the controller resets the one-hour timer. If Sof persists, check auxiliary inputs (AU1, AU2, AU3) for proper operation.

Display Lock

Press and hold BACK and ENTER simultaneously until LOC is displayed. The display will be locked and show LOC whenever a button is pressed. To unlock, press and hold BACK and ENTER until LOL disappears.

Bonding/Pairing

Refer to KE2 Evap Panel Literature for setup of multiple evaporator and lead/lag controllers.

Menu Navigation

Indicator Lights:

• RED LIGHT: Critical alarm (system not running)
• YELLOW LIGHT: Non-critical alarm (system running)
• GREEN LIGHT: Calling for refrigeration, Liquid Line Solenoid (LLS) / compressor contactor relay energized.
• GREEN FLASHING: Waiting on min. run or min. off timer to energize or de-energize LLS relay.

Navigation Instructions:

• Access the setpoint menu by pressing and holding BACK until tS displays.
• Press < or > to scroll through available setpoints.
• Press ENTER to view the current setting.
• Press < or > to change the setpoint. Press ENTER momentarily to move between digits.
• Press and hold ENTER to save setpoint changes.
• Press BACK to escape.