background image

© Copyright 2017 KE2 Therm Solutions, Inc., Washington, Missouri 63090

© Copyright 2017 KE2 Therm Solutions, Inc., Washington, Missouri 63090

KE2 

Low

Temp

Quick Start Guide

KE2 

Low

Temp

Quick Start Guide

Buzzer 

dip switch

Q.3.29 (Q.1.29) May 2017

Page 13

25

25

Controller Mounting

 Locate the 4 stainless steel screws in the accessories kit

 Install the 4 screws

 Place the controller on the mounting screws and tighten down the 

screws.

27

27

Final Step

 Leave these installation instructions on site in a convenient loca-

tion, where it can be easily located, for future service.

28

Setting the dip switch to activate on board buzzer

 To disable the audible alarm buzzer feature of the KE2 Low Temp 

the dip switch must be switched to OFF (default from the factory is 

ON) 

 The red dip switch is located at the bottom of the controller, and is 

equipped with a switch that indicates ON or OFF.

 By selecting OFF, the buzzer will be in an inactive state, and will not 

sound when any type of alarm occurs. 

Remote Monitoring, Control, Alarm Notifications

The KE2 Low Temp includes RS-485 Modbus communications, and 

can now be accessed remotely using the KE2 Local Area Dashboard 

and Alarms (KE2 LDA). See page 14 for further details.

26

Connecting sensor wires to controller

 The temperature sensors are designed to be attached to the con-

troller using 2 position screw terminals.  The terminals are located on 

the controller’s lid, on the bottom side of the display. 

 Connect all sensors to the appropriate locations, which can be 

determined from the label on the circuit board, or from the Wiring 

Schematic.

 The sensors are not polarized, so wire location does not effect sen-

sor performance. 

26

Summary of Contents for 20903

Page 1: ...2 Low Temp Defrost controller A C D E F G H I B J Unique Features Service Call Saver Post Defrost Indicator To eliminate unnecessary service calls the KE2 LowTemp alerts the user when it is coming out...

Page 2: ...d Air Evaporator Compressor Condenser SaturationTemp F from receiver pressure LiquidTemp atValve F Subcooling Suction Pressure PSI SuctionTemp F evaporator outlet SaturationTemp F calculated from Suct...

Page 3: ...or Select a place that is the last to de frost preferably at the end of the evaporator More often than not on coils the location of the sensor is a short distance from the end approximately 1 to 1 1 2...

Page 4: ...onduit Determine the number of wires to go to the controller Controller power 2 wires Fan control 2 wires Defrost heater control 2 wires Liquid line solenoid 2 wires Note Install in accordance with lo...

Page 5: ...conduit entrance However knockouts are provided on the sides and bottom to allow the most convenient wiring path Power wiring should only pass through the side knock outs to maintain the safety of se...

Page 6: ...ver 30 amps 9 10 Liquid Line Solenoid Compressor Relay Strip the end of the 2 wires used for the liquid line solenoid Locate 2 90 female spade connectors in the accessories kit Crimp on the female con...

Page 7: ...fety cover Once all of the high voltage wiring is complete install the plastic cover on the controller Locate the cover and 3 small screws from the accessories kit Position the cover over the 3 mounti...

Page 8: ...n the controller constitute switch legs only no power is di rectly supplied out of the relay terminals Assure that the controller has a constant source of power and the voltage is properly selected as...

Page 9: ...ower to provide continuous power to the controller 15 Evaporator wiring Fans Strip the ends of the wires con nected to the KE2 Low Temp used to control the evaporator fans The fan wires from the contr...

Page 10: ...ith the black stripe to the NO terminal on the Defrost Relay to one of each of the defrost leads Connect L2 Neutral to the remain ing defrost leads The defrost safety should not be re moved from the c...

Page 11: ...ket Install the Air Temperature Sensor using the Stainless Steel self piercing screw and bracket from the accessory kit The end with the single loop is designed to be mounted with the screw included T...

Page 12: ...ternate method of positioning places the sensor vertically be tween the coil fins Pinch the fins gently together securing the sensor in place Extending sensor wires After the sensors are mounted they...

Page 13: ...ocated at the bottom of the controller and is equipped with a switch that indicates ON or OFF By selecting OFF the buzzer will be in an inactive state and will not sound when any type of alarm occurs...

Page 14: ...w From the Webpage you can monitor temperatures relay status and alarms as well as make changes to setpoints and manually control the system KE2 Switch KE2 SmartGate connected to customer Network WAN...

Page 15: ...Press and hold to confirm each setpoint change BACK Press to escape tS diF CSH dtyP dPd Only visible if CUS custom is selected for dPd Defrost per day tOd d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 dtsP d...

Page 16: ...mp 13 to 120 F 25 to 49 C OperatingTemp 40 to 120 F 40 to 49 C Display 4 digit 7 segment LED IP Rating IP65 Inputs 4 2 temperature sensors KE2 SKU 20199 2 dual purpose temperature or digital inputs Ou...

Page 17: ...elay tAd PF PF Power Failure Indicates power has been off and just turned on only when dPd CUS Setpoints Basic Menu Setpoint Description Minimum Default Maximum tS tS Temperature Setpoint 50 F 10 F 10...

Page 18: ...S Temperature Setpoint 50 F 10 F 100 F diF diF Differential 1 5 30 CSH CSH Maximum Compressor Starts Hour 5 Off 6 10 FrEF FrEF Fan mode during refrigeration mode ti24 OnCP PErn PErn OnCP ti24 AU1 AU1...

Page 19: ...me of Defrost 9 when in defrosts per day dPd is custom CUSt based on 24 hour clock d10 d10 Defrost 10 Setpoint Start time of Defrost 10 when in defrosts per day dPd is custom CUSt based on 24 hour clo...

Page 20: ...rm Alarm indicates that there was an interruption in the power supply to the controller rEFr rEFr Refrigerate Mode System State System mode displayed when controller is in cooling mode rt1 rt1 RoomTem...

Reviews: