© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.23 November 2014
Page 11
Evaporator wiring – Auxiliary
The auxiliary relay is optional and wiring will vary depending on the
auxiliary relay method selected.
Depending on auxiliary relay location, an additional conduit may
be required.
Strip the ends selected to control the auxiliary component.
Break the hot leg of the auxiliary component.
Attach the wire from the NO terminal on the auxiliary relay to one
of the auxiliary component leads. Attach the wire from the COM on
the auxiliary component relay to the L1/Line Voltage.
Connect L2/Neutral to the remaining auxiliary component lead.
Route and secure the conduit to the location the controller is to be
installed.
Wiring must follow local wiring codes.
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Installing the sensors
Although not required, sensors should be labeled with their func-
tion. This will eliminate confusion when connecting the sensors to
the controller.
Air Sensor Bracket
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.
The end with multiple loops is designed to hold the sensor.
Locate the best place to install the sensor.
The sensor should be located between 6 and 12 inches away from
the face of the evaporator. This distance prevents the sensor from
sensing heat from the heating elements during the defrost cycle, but
close enough to accurately sense the return air temperature.
The sensor bracket may be bent as necessary to locate the sensor
in the proper position.
WARNING!
Do not allow the metal portion of the air sensor to touch any-
thing other than air. It should not touch the bracket, nylon cable
tie, or any other solid surface.
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KE2
Controlled
Environment
Quick Start Guide
Installing the HSV
For the KE2 Controlled Environment to reach its full potential,
an Electric Expansion Valve (EEV) is required. KE2 Therm’s Hybrid
Stepper Valve (HSV) is the optimal choice to be paired with the con-
troller, although other manufacturers’ valves can be used.
Acting as an adjustable Automatic Expansion valve, the valve con-
trols the pressure, instead of superheat, allowing the controller to use
the coil’s TD to maximize or minimize dehumidification, and bring
the humidity to the proper level.
Installing an EEV on an existing system requires the system to be
pumped down, the existing valve to be removed, and then the EEV
to be sweat back into the system. Install the electronic expan-
sion valve per the manufacturer’s instructions included with the
valve.
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