KE2 Evaporator Efficiency User manual

Q.1.64 July 2021
KE2 EvaporatorEciency
Condensed Quick Start Guide
thermsolutions
This reference should remain on site
with the installed contactor panel.
© Copyright 2021 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Parts List
The following parts are included:
Kit #20178 with 120/208-240 VAC controller
Kit #20844❶with 120/208-240 VAC controller
Kit #20631❷with 120/208-240 VAC controller
Kit #20222❸Beacon® I & II replacement
(1) KE2 Evaporator Eciency controller
(1) high voltage safety shield
(3) 15’ colored temperature sensors❶❷❸*
(4) 90 degree quick disconnects
(5) self-tapping screws
(2) course thread screws &
(1) ne thread machine screw with lock washer
(1) KE2 Terminal Board with fuses
(1) KE2 Evap Navigation sticker
(2) 1/2” plastic knockout plugs
(4) wire ties (rated for low temp)
(1) air sensor mount
(1) 5-position pluggable connector (for EEV)
(4) 3-position pluggable connectors (for power in, transducer and 3A
relays)
(8) 2-position pluggable connectors (for sensors and digital input, analog
output)
(1) 120 Voltage jumper
(1) 208-240V Voltage jumper (already installed on KE2 Evap)
(1) Split Bushing (for high voltage shield)
(1) EC Motor Relay (120V & 240 V) kit (not shown)
20844 KE2 Ultimate Install kit includes KE2 Mounting Box pn 20687 and 40’
colored temperature sensors
20631 kit does not include temperature sensors
20222 Beacon® kit includes an extra temperature sensor, and pressure transducer with cable.
*To function properly, the controller requires a room temp sensor (T2Air - blue) and a coil
temp sensor (T3Coil - yellow) . KE2 Therm strongly recommends the third sensor is used as
2nd coil temp sensor (T4Aux - green).
Supplies List - All accessories required for the controller to work are
supplied. However, truck stock items are required for the installation.
(2) Conduit to go between the controller and the evaporator
(2) Conduit connectors (straight or elbow as required)
(11) High voltage wires matched to the load of the heaters, fans, liquid line
solenoid, alarm (if used), and the controller.
(8) Spade Connectors matched to gauge of high voltage wires
Wire labeling (numbers, colors, etc.)
Additional wire ties
18 gauge twisted shielded pair (if extending sensor wires)
Foam insulation if running wires outside the space.
Silicone (for sealing any box penetrations)
Popular Accessories - The following parts are available separately:
Wire Harness- 10’pn 20736, 25’pn 20670, 40’pn 20737
Mounting Box pn 20687
Door Switch pn 20543
Buzzer & Light Combo (120VAC) pn 20973
Further information on accessories can be found in KE2 Condensed Catalog 411.
A
C
D
E
F
G
H
I
J
K
L
M
N
B
O
P
L M N
DE
OP
F
B
Left Arrow & Right Arrow
Use to move between Menuscolumns
Up Arrow & DownArrow
Scroll through Menu Parameters
ENTER
Press and hold ENTER for 3 seconds, when
display is blinking changes can be made.
BACK
Press BACKto return to the previous view.
Press and hold ENTER for3 seconds.
Change settings:
Savechanges:
Moving throughcontroller menus:
Returnto Main Menu:
Lights: Red - critical alarm (system not running)
Yellow- non-critical alarm (system running)
Green - compressor should be on
- compressor waiting on timer to start/stop
ENTER
Press ENTER to go fromparameter to value.
Togglebeween
description& value :
Menu Layout:
Variables Manual*
(viewonly)
Alarms
(viewonly)
ENTER
Setpoints Enter
Password
NOALARM
EMAILFAILURE
ROOMTEMP
DERIVATIVE
ROOMTEMP
FIRMWAREVERSION
MANUALCONTROL
CLEARMD
Controller Navigation
ENTER
ENTER
BACK
Press BACK3 - 4 times
Ifyou lose your place:
*For manual defrost use MANUAL CONTROL
BACK
24-hour Emergency Support: 1.888.337.3358 www.ke2therm.com
pn21061 9-14
AC
G H
IJ
K
Q
NOTE: All sensors
can be used for any
purpose and are
interchangeable,
colors are for ease of
identication only.
Video 046 How to Wire the KE2 Evap Controller
Video 033 How to Conrm the KE2 Evap is Wired
Correctly
Video 068 How to Determine Proper Coil Sensor
Location
Video 069 How to Properly Install a Coil Sensor
Video 032 Initial Defrost Sequence
Visit our YouTube channel for videos
on KE2 Evap installation and setup.
Introduction Mode
Applying power to the controller for the rst time causes it to enter Introduction
Mode. Introduction Mode consists of as little as 4 setpoints that must be con-
gured to begin controlling the system.
Mechanical Valve
(TEV) - 4 steps
Preset EEV
5 steps
Custom EEV
8 steps
Room Temp Room Temp Room Temp
Defrost Type Defrost Type Defrost Type
Valve Type Valve Type Valve Type
KE2 Smart Access Refrigerant Refrigerant
KE2 Smart Access Motor Type (Unipolar/Bipolar)
Motor Step Rate
Max Valve Steps
KE2 Smart Access
Controller Webpages
Logging in is required to make changes via the controller webpages.
The defaults are: User Name: ke2admin Password: ke2admin
IMPORTANT: The User Name and Password should be changed from the
default for security purposes.
NOTE: When making changes from the display the password is“2222”
Complete Instructions
Please visit:
http://ke2therm.com/product/ke2-evaporatoreciency/
and click the Link to Literature button.
— OR —
use this QR code:
youtube.com/ke2therm
*
Q
R

© Copyright 2021 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.64 July 2021
Page 2
KE2 EvaporatorEciency
Condensed Quick Start Guide
BL/BK
OR/BK
Y/BK
FAN/S
HEATERS
LL SOLENOID/COMP RELAY
BK/OR
L1
WT/R
L2
HS
GND
P/N 20996
12 AMP
20 AMP
3 AMP
OR NEUTRAL HEATERS
thermsolutions
®
NO NC
COM
NO NC
COM
COM NC
NO
COM
NC
N0
Solenoid Relay
Defrost Relay Fan Relay
208-240
Power Input
Voltage Jumper
208-240 Default
L1
Ground
L2
COM NC
NO
COM
NC
N0
Auxiliary Relay
Yellow with black stripe
16 AWG
Black with yellow stripe
(L1) 16 AWG
Blue with black stripe
14 AWG
Black with blue stripe
(L1) 14 AWG
LLS/Compressor
Fans
Black with white
(L1) 16 AWG
White with red
(L2/neutral) 16 AWG
Green
(Ground) 16 AWG
Power
Orange with black stripe
12 AWG
Black with Orange stripe
(L1) 12 AWG
Defrost Heaters
Supply Voltage
FAN
MOTOR
FAN
MOTOR
FAN
MOTOR
EVAPORATOR
FANS
HEATER LIMIT SWITCH
DEFROST HEATERS
LIQUID LINE SOLENOID
N.C.
R/W
BL/BK
BK
BL/BK
FROM
CONTROLLER
EC MOTOR
RELAY
See Q.1.30 Figure 3 for wiring of the EC Motor Relay.
Wiring Schematic - Controller New Installation
Wiring Schematic - Controller New Installation
Q
Use Split Bushing ("Q" in the kit) to prevent chang of the high volt- age wires if routing through the high voltage shield

© Copyright 2021 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.64 July 2021
Page 3
KE2 EvaporatorEciency
Condensed Quick Start Guide
Step ❹- The fourth prompt is whether KE2 SMART ACCESS is ENABLED or
DISABLED. KE2 SMART ACCESS allows you to easily view your controller online.
Make your selection by using the or arrow, and then press and hold
ENTER for three seconds.
These are the only setpoints required to begin controlling the system. For setup
with multi-evaporator applications see bulletins Q.5.10 and Q.1.32
Adjusting Controller Parameters
The controller has the ability to access an abundance of information from the
4-digit alphanumeric display. However, the controller requires a password, add-
ing a degree of protection from unwanted modications. The controller will
prompt the user for a PASSWORD when the user attempts to access setpoints
they do not have permission to change.
The Controller Navigation illustration on page 4 shows the menu structure of the
controller. The default display of the controller always shows the actual room
temperature, defrost, or any alarm condition. Pressing the or arrow will
move from the default display to the next menu column. The VARIABLES menu
column consists of the current sensor readings, and the relays’ state.
The User Password (1111) only provides access to the ROOM TEMP setpoint.
For the protection of the system, access to the SETPOINT and MANUAL control
requires an Installer Password (2222).
Pressing the
BACK
button at any time will return the user to next level up the
menu. A second/third press will either return to the Main Menu, or to the room
temperature reading.
User Interface
❹ Controller Setup: Four Step Intro Mode
Applying power to the controller for the rst time causes it to enter Introduction
Mode. Introduction Mode consists of as little as 4 setpoints that must be cong-
ured for the KE2 Evap to begin controlling the system.
Step ❶- The rst setpoint the user is asked to enter is the desired ROOM TEMP.
The default value is -00.0ºF, and the right most 0 will be ashing. Use
the and arrows to change the digit being modied. If you want the room
temperature warmer, press the arrow, and if you want it colder, press the 
arrow. Once you have the proper room temp, press and hold ENTER for three
seconds.
Step ❷- Next, the controller will display DEFROST TYPE, and then display
ELECTRIC, for electric defrost. The controller is designed to work with electric, hot
gas, and air defrosts. Change this value by pressing the or arrow. Once you
have the correct value, press and hold ENTER for three seconds.
Step ❸- The controller now prompts for the expansion valve type, and dis-
plays MECHANICAL as the default. If you have a mechanical valve, press and hold
ENTER for three seconds. If you have an electric valve, use the or arrow
to move to the correct valve. With the correct electric valve displayed, press and
hold ENTER for three seconds. NOTE: If you select an electric valve, you will then
be prompted to specify the REFRIGERANT.
The KE2 Evap may also be applied to user dened CUSTOM electric valves. When
CUSTOM is selected, the user is prompted to select MOTOR TYPE, MOTOR STEP
RATE, and MAX VALVE STEPS.
IMPORTANT: Determine the coil sensor location
When arriving on site, put the system into defrost and observe where the frost on the coil
disappears last. Place one sensor in each of the last two places where the frost disappears
❶. Monitor the coil’s air entering and air exiting side. Often the last place frost disappears is on
the air exiting side, near the right or left end. Verify all heating elements are working properly.
Sensor location is often approximately 1 to 1-1/2” away from the right and left edges of the ac-
tive coil surface, and typically near the bottom 1/3rd of the evaporator. Ice tends to grow from
the edges inward , but verify coil sensor locations by observing a defrost. Do not install coil
sensor on the U-bends.
The sensor needs to be as far away from the defrost heat sources as possible.
Note: To prevent sensor wire damage from sharp edges, insert plug Iinto coil housing - ❷.
Plug is inserted in the inner housing to access the coil. Puncture plug to insert sensor wire.
❸the sensor should touch two circuit tubes. When inserting the sensor into the coil, the tip
should touch one of the circuit tubes. Don’t locate it next to the heating elements - position it
half way between the heaters if possible. In ❹the probe is inserted into the ns approximately
1/16” deeper than the stainless shielding. Pinch the ns gently together, securing the sensor.
This provides thermal ballast too, ensuring a complete defrost.
Alternate method - As the defrost termination sensor, it is important the sensor does not ter-
minate defrost before all frost is removed from the coil. In some installations, inserting the sen-
sor into the coil may position it too close to the defrost heat source. An alternate method of
positioning places the sensor vertically between the coil ns, see ❺. Pinch ns together gently,
securing the sensor.
Extending sensor wires
After the sensors are mounted, route them back to the controller. If the wires must be ex-
tended, use 18 gauge twisted shielded pairs. Max recommended length for 18 gauge: 100ft.
When running the wires back to the controller, do not induce noise on the sensor wires. This
occurs when sensor wires are located near high voltage lines (dened by UL as greater than
30V.) Do not run high voltage and low voltage wires in the same conduit.
If crossing a high voltage line, run the sensor wiring at right angles to minimize noise.
Verify where frost is last to
disappear by initiating a defrost,
and observing last spot to clear.
Verify where frost is
last to disappear
(often on air exiting side).
Item Ifrom Parts List on page 1
❶
❷
❺
❹❸

© Copyright 2021 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.64 July 2021
Page 4
KE2 EvaporatorEciency
Condensed Quick Start Guide
Q.1.64 July 2021 supersedes all prior publications KE2 Therm Solutions
12 Chamber Dr. . Washington, MO 63090
636-266-0140 . www.ke2therm.com
Menu
Parameters:
MANUAL CONTROL
MANUAL VALVE4
CLEAR ALARMS
MANUAL COMPRESSOR RELAY
MANUAL DEFROST RELAY
MANUAL FAN RELAY
MANUAL AUX RELAY
FACTORY RESET
WEB PASSWORD RESET
KE2 SMART ACCESS
DHCP
DOD INIT
CLEAR MD
Menus:
Variables Manual
(view only)
Non-adjustable
NO ALARM
PRESSURE SENSOR
SUCTION TEMP SENSOR
AIR TEMP SENSOR
COIL TEMP SENSOR
AUX TEMP SENSOR
HIGH SUPERHEAT
LOW SUPERHEAT
HIGH AIR TEMP
LOW AIR TEMP
EXCESS DEFROST
DEFR TERM ON TIME
DOOR SWITCH
COMMUNICATION ERROR
EXT ALARM
EMAIL FAILURE
Alarms
(view only)
ENTER
ENTER
ROOM TEMP
COIL TEMP
SYSTEM MODE
SUPERHEAT
SUCTION PRESSURE
T1 SUCTION TEMP1
SATURATION TEMP
VALVE % OPEN4
T4 AUX TEMP1
COMPRESSOR RELAY
DEFROST RELAY
FAN RELAY
AUX RELAY
DIG 1 STATUS
DIG 2 STATUS
DIG 3 STATUS
IP OCTET 1
IP OCTET 2
IP OCTET 3
IP OCTET 4
SUBNET MASK OCTET 1
SUBNET MASK OCTET 2
SUBNET MASK OCTET 3
SUBNET MASK OCTET 4
FIRMWARE VERSION
1 T1 & T4 are parameters
and can be set to various
functions. The default for
T1 is Suction Temp, the
default for T4 is Coil Temp.
2 The Setpoint paramenters
shown in BOLD (Valve
Type, Room Temp
Setpoint and Defrost
Mode) need to be set by
the user prior to start up.
The other Setpoint
Parameters can also be
adjusted, however the
factory setpoints are
generally correct for most
applications.
3 The Setpoint parameters
shown in ITALIC are
displayed only when a
Custom EEV is used.
4 Displayed when an EEV is
used.
5 Only available if mechani-
cal valve is selected. When
using an electric valve T1
is xed as suction
temperature.
6 The Setpoint parameters
shown in BOLD ITALIC are
active for bonded
controllers only.
7 Only displayed when Run
Time Defrost is selected.
ROOM TEMP2
DEFROST TYPE2
VALVE TYPE2
MOTOR TYPE3
MOTOR STEP RATE3
MAX VALVE STEPS3
SUPERHEAT4
MAX OPERATING PRES4
REFRIGERANT
AUX TEMP 4 MODE
AUX TEMP 1 MODE5
AUX RELAY MODE
FAN SPEED
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/MAX DEFROST TIME
DRAIN TIME
COMP RUN TIME7
ELEC DEFROST MODE
FAN DELAY TEMP
MAX FAN DELAY TIME
PUMP DOWN TIME
MULTI AIR TEMP CTRL
MULTI EVAP COOL6
MULTI EVAP DEFROST 6
MULTI EVAP SENSOR6
HIGH TEMP ALARM OFFSET
HIGH TEMP ALARM DELAY
LOW TEMP ALARM OFFSET
LOW TEMP ALARM DELAY
DOOR ALARM DELAY
DIG IN 1 MODE
DIG IN 1 STATE
DIG IN 2 MODE
DIG IN 2 STATE
DIG IN 3 MODE
DIG IN 3 STATE
2ND ROOM TEMP
SUCT PRES OFFSET
SUCT TEMP OFFSET
AIR TEMP OFFSET
COIL TEMP OFFSET
AUX TEMP OFFSET
TEMP UNITS
AIR TEMP DIFF
EXTREME TEMP DIFF
PROPORTIONAL
INTEGRAL
DERIVATIVE
Setpoints
Options for
DIG IN STATUS
DISABLED
2ND (ROOM) TEMP
DOOR SWITCH
EXT ALARM
SYSTEM OFF
LIGHT SWITCH
DEFROST LOCKOUT
DEFROST INTERLOCK
Enter
Password
Left & Right arrows move
between Menus
Up & Down arrows scroll
through Menu Parameters
ENTER
Press & hold ENTER for
3 seconds, when display
begins blinking changes
can be made
BACK
Press BACK to return to
the previous view.
ENTER
Press & hold ENTER for
3 seconds to save change
Change settings:
Save setting
changes:
Move through
menus:
Return to
Main Menu:
Indicator Lights
Red - critical alarm (system is not running)
Yellow - non-critical alarm (system running)
Green - Liquid Line Solenoid (LLS) relay energized
Green ashing - waiting on min. run or min. o
timer to energize/de-energize LLS relay
ENTER
Press ENTER to go from
parameter to value.
Toggle between
description &
value :
Navigating Menus