Q.1.77 February 2023
Page 3
© Copyright 2023 KE2 Therm Solutions, Inc., Washington, Missouri 63090
KE2 EvapPanel
Quick Start Guide
Verify where frost is last to
disappear (often on air exiting side).
Item from Parts List on page 1.
Sensor Installation - Coil Temp Sensors
IMPORTANT: Determine coil sensor locations
When arriving on site, put the system into defrost, verify all heating
elements are working properly, and observe where frost is last to
disappear on the coil. Place one sensor in each of the last two places
where frost disappears ❶.
Monitor the evaporator’s air entering and exiting sides. Often the last
place frost disappears is on the air exiting side, approximately 1”to 1-1/2”
away from the right and left edges of the active coil surface, near the
top or bottom 1/3rd of the evaporator, as far away from the defrost heat
sources as possible. Ice tends to grow from the edges inward, but verify
coil sensor locations by observing an actual defrost. Do not install coil
sensor on the U-bends.
To prevent sensor wire damage from sharp edges, insert plug (D) into
coil housing - ❷. Plug is inserted in the inner housing to access the coil.
Puncture plug to insert sensor wire.
For most applications, the sensor should rest against a circuit tube in
between the evaporator ns ❸. Position the sensor vertically between
the coil ns. Pinch ns together gently all around the probe, securing the
sensor. This also provides thermal ballast, ensuring a complete defrost.
Don’t locate the sensor next to heating elements or insert the sensor too
far into the coil. Leave a handloop for service in-case the sensor must be
repositioned.
After the sensors are installed, route the sensor cables back to the control-
ler. Do not induce noise on the wires by running the sensor cables near
high voltage lines.
If the cables must be extended, use 18 gauge twisted shielded pairs. Max
recommended length for 18 gauge: 100ft.
Intro Mode
❶
❷
The controller will enter Intro Mode the rst time power is applied. Intro
Mode consists of as little as 4 setpoints that must be congured to begin
controlling the system.
1. Press or to move through the available Types of Control. Once
the correct option is displayed, press and hold ENTER for 3 seconds.
Ed Ed Electric Defrost with Mechanical TEV
AdE AdE Air Defrost with Electric Expansion Valvle (EEV)
Ad Ad Air Defrost with Mechanical TEV
EdE EdE Electric Defrost with Electric Expansion Valve (EEV)
2. If AdE or EdE was selected, the controller asks for the Expansion Valve
Type and displays rS. Press or to scroll through the available
expansion device types. With the correct EEV displayed, press and hold
ENTER for three seconds.
tHr tHr MECHANICAL Traditional Thermostatic Expansion Valve.
PLS PLS PULSE VALVE Pulse Width Modulation (PWM) Valve.*
rS rS KE2 RSV KE2 Therm's Refrigeration Stepper Valve.
SEi SEi SER/SEI 1 TO 20 12 VDC Bipolar Sporlan EEV with 1,600 max
steps, 200 steps/second.
SEr SEr SER AA TO L 12 VDC Bipolar Sporlan EEV with 2,500 max
steps, 200 steps/second.
CrL 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.
*Requires PN 21304 Solid State Relay N.O.
3. If AdE or EdE was selected, the refrigerant must also be selected. Press
or to scroll through the available refrigerants. Press and hold
ENTER to save a selection.
Refrigerants
Abbreviation Full Name Abbreviation Full Name
404 404 R-404A 408 408 R-408A
458 458 R-458A 438 438 R-438A
452 452 R-452A 717 717 R-717
513 513 R-513A r22 r22 R-22
450 450 R-450A 134 134 R-134a
449 449 R-449A 42d 42D R-422D
448 448 R-448A 42A 42A R-422A
744 744 R-744 40C 40C R-407C
410 410 R-410A 40A 40A R-407A
407 407 R-407F 507 507 R-507
409 409 R-409A
4. The nal prompt is to set KE2 SMARTACCESS to ENABLED or
DISABLED. KE2 SmartAccess allows you to easily view and modify
your controllers online. Press or to make your selection, then
press and hold ENTER .
Note: If a KE2-Edge Manager (KE2-EM) is on site, select DISABLED for
KE2 SmartAccess.
❸
