Enviro-Control™ KE2 Evaporator TM thermsolutions KE2 EvaporatorEfficiency ENTER BACK Installation Instructions 1 01/13 Rev.
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Introduction The KE2 Evaporator Efficiency (KE2 Evap) is an electronically operated evaporator controller engineered to save energy in refrigeration systems through precise control of superheat, space temperature, fan cycling, reducing compressor runtime, and implementing demand defrosts. The KE2 Evap offers quick payback, and a life expectancy that matches that of the system.
Enviro-Control™ KE2 Evaporator Installation Instructions Location The KE2 Evap was developed with ease of installation in mind. The controller is supplied in an enclosure, and encapsulated to protect the circuitry from moisture damage. This extra level of protection allows the controller to be installed in the refrigerated space. When installing the controller, it may either be installed on an interior/exterior wall or on the evaporator. Many evaporators evaporator or on its housing.
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions After the sensor is installed, route the wire back to the controller location. When routing sensor wire, it is important to avoid interference from high voltage lines. If sensor wire is run parallel to the high voltage, there is a potential for inductance to affect the sensor reading. This is of particular concern with long wire runs. When extending sensors, use the 18 gage, shielded twisted pair.
Enviro-Control™KE2 EvaporatorEfficiency Installation Instructions Figure 4 - Coil Sensor Placement Alarm Relay - The alarm relay is rated at 3A inductive at 240V. This relay uses the 3-position pluggable screw terminal to make the connection to the board. The relay may be used to connect an audible alarm, light, or to alert a 3rd party alarm system. One leg of the incoming power supply (L1) should be connected to COM terminal of the alarm relay, the lower of the two smaller relays.
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Figure 5 - KE2 Evaporator Efficiency - Diagram (back view) Fuse 208-240 120 120 Voltage Selector Bk/MDL-1/4 Time Delay Power In 1 2 3 4 line / L1 ground neutral / L2 120V - Jumpers 1&2 3&4 COM 208-240V Jumper 2&3 only Fan Relay (10 amp) NO NC Transformer Defrost (Heater) Relay 18V COM NC NO 3A Relay NC NO COM pumpdown door switch dual temp setting Electric Valve* COM NC NO Liquid Line Solenoid COM NC NO Alarm Rel
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Figure 7 - Wiring Schematic - Controller New Install Legend EFM - Evaporator Fan Motor DH - Defrost Header LLS - Liquid Line Solenoid AUX - Auxiliary PT - Pressure Transducer TSUCTION - Suction Temperature TAIR - Return Air Temperature TCOIL - Evaporator Coil Temperature TAUX - Auxiliary Temperature EEV - Electric Expansion Valve D1 - Digital Input 1 D2 - Digital Input 2 D3 - Digital Input 3 - - - By others All field wiring must conform t
Evaporator Fan Motors Con1 Max HP & Amp Ratings (Total All Fans) Voltage Max HP Max AMPS 230 3Ø 15 42 460 3Ø 30 40 575 3Ø 30 32 Figure 8 - Wiring Schematic - Controller with KE2 Contactor Box 8 Relay Box P/N 20217 20218 20219 230V 3Ø 54 Amps 68 Amps 80 Amps 460V 3Ø 52 Amps 65 Amps 77 Amps 575V 3Ø 52 Amps 62 Amps 62 Amps Existing Defrost Heaters Max Current Ratings (Amps are Total All Heaters) Contactor ratings per UL508 CSA 22.
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Figure 9 - KE2 Evaporator Efficiency - Dimensions (front view) Dimensions - Inches Depth 2.45” Pressure Transducer 5.75 2.2 0.95 0.67 0.5 2.03 1.40 2.03 9.0 female 1/4” SAE with depressor 11.75 6.75 Temperature Sensor 0.187 R 0.105 1.50 R 0.210 10.0 ft. 1.50 0.75 .25 6.5 9 01/13 Rev.
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Mounting the Controller Once the wiring has been run to the controller location, the controller can be connected. When installing the KE2 Evaporator in the mounting surface. The controller has keyholes in each mounting tab to allow the controller to be installed over the screws. The mounting pattern can be seen in Figure 9.
Enviro-Control™ KE2 Evaporator Installation Instructions Table 2 - Navigation Through the Controller Menu and Menu Paramenters Indicator lights Red light Yellow light - non-critical alarm (system running) Green light - compressor on - compressor waiting on timer to start/stop Left Arrow and Right Arrow Use to move between Menus To move through controller menus: Up Arrow and Down Arrow Scroll through Menu Parameters ENTER BACK To return to Main Menu: BACK Press BACK to return to the previous view.
Enviro-Control™ Factory Default Settings Electric Defrost Factory Settings (freezer applications) PARAMETER ROOM TEMP DEFROST TYPE VALVE TYPE MOTOR TYPE MOTOR STEP RATE MAX VALVE STEPS SUPER HEAT MAX OPERATING PRESSURE REFRIGERANT AUX TEMP MODE AUX RELAY MODE MIN COMP RUN TIME MIN COMP OFF TIME REFRIG FAN MODE DEFROST MODE DEFROSTS / DAY 1ST DEFROST DELAY DEFROST FAN STATE DEFROST TERM TEMP DEFROST PARAMETER DRAIN TIME COMP RUN TIME ELEC DEFROST MODE FAN DELAY TEMP MAX FAN DELAY TIME PUMP DOWN TIME MULTI AI
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Table 3 - Controller Menus and Menu Parameters Manual Menu Parameter Name Description Range MANUAL CONTROL MANUAL VALVE CLEAR ALARMS MANUAL COMPRESSOR RELAY MANUAL DEFROST RELAY MANUAL FAN RELAY DHCP FACTORY RESET Force the controller into the next operating mode Manually open or close the EEV in percentage increments Clear all active alarms Manually energize or de-energize liquid line solenoid /compressor relay Manually energize or d
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Bonded Controllers Only Custom EEV Only Setpoints Menu Parameter Name Description ROOM TEMP Room temperature to be maintained DEFROST TYPE Method of defrost used on the evaporator coil: Electric, Air, Hot Gas with Liquid Line Solenoid/Compressor relay off, Hot Gas with Liquid Line Solenoid/compressor relay on VALVE TYPE Type of valve used on the system: mechanical, pre-configured electric, custom EEV configuration MOTOR TYPE If
Enviro-Control™ KE2 Evaporator Installation Instructions Range Default -50°F to 90°F -10°F Current ELEC ELEC, AIR, HOT GAS COMP ON, HOT GAS COMP OFF MECHANICAL, KE2, SER/SEI 1 TO 20, SER B TO L, SEI 30, SEI 50, SEH, ETS12 TO 50, ETS100, ETS250/400, KV, CAREL, CUSTOM; BIPOLAR, UNIPOLAR MECHANICAL 30 to 400 steps/second BIPOLAR 200 steps 200 to 6400 steps 1600 steps 5°F to 30°F 8°F 10 to 150 psig 150 psig 404A, R507, 407A, 407C, 422A, 422D, 134A, R22, R717, 438A, 408A, 409A, 410A, 404A DI
Enviro-Control™ KE2 EvaporatorEfficiency Installation Instructions Table 4 - Defrost Defaults Setpoint Electric Air Hot Gas Defost Fan State: Off On Off Defrost Termination Temperature Setpoint: 50 40 50 Maximum Defrost Time 30 45 15 Pulse Permanent Permanent Electric Defrost Mode: Communication The KE2 Evap uses standard TCP/IP communication. The controller is equipped with an RJ-45 female connector to connect to Ethernet cable.
