Controller Setup; Adjusting Controller Parameters - KE2 Therm Solutions Evaporator Efficiency Installation Instructions Manual

KE2 EvaporatorEfficiency
Installation Instructions
User Interface
The KE2 Evap's onboard user interface uses a familiar 6-button
arrangement to simplify navigation through the controller's
menus. The menu has been grouped by category to provide an
easy to program structure. By grouping the menu by each func-
tional area, the user is not required to scroll though unrelated
parameters to access the desired functionality.
The left and right arrows move between the menus. When
pressed while in a menu, the left and right arrows will move to
the main screen or the adjacent menu.
The up and down arrows move the user through the available
options for each group. All users are allowed access to the vari-
able alarms. All other information is password protected to pre-
vent unauthorized access to the controller's functionality.
The ENTER button is used to save an input option when it has-
been changed. The enter button must be held for 3 seconds
to prevent accidental changes Changes may be discarded by
waiting, to allow the controller to timeout and return to default
screen, or hitting the BACK button.
The BACK button is used to return to the previous screen. Press-
ing the BACK button three times at any time will return the user
to the default view. See Table 2 (following page)

Controller Setup

Upon initially applying power to the controller, the controller
will initialize, then automatically enter the Introduction Mode.
The Introduction Mode consists of as little as 4 setpoints that
must be configured for KE2 Evap to begin controlling the sys-
tem. See Table 2
The first setpoint the user is asked to enter is the desired ROOM
TEMP. This is followed by the DEFROST TYPE. The controller is
designed to work with electric, hot gas, and off time defrosts.
The last setpoint is the VALVE TYPE. The controller is defaulted
to be used with a mechanical valve, but may be used with a
variety of EEVs, including a customer defined valve. To easily
view your controller online enable KE2 SMART ACCESS These
are the only setpoints required to begin controlling the system,
when applied on a single evaporator, with a mechanical valve.
If using a standard/predefined EEV, the user will also be prompt-
ed to specify the REFRIGERANT. The KE2 Evap may also be ap-
plied to user defined EEVs. When this option is selected, the user
will be prompted to select MOTOR TYPE, MOTOR STEP RATE,
and MAX VALVE STEPS. Once these have been set, the KE2
Evap will begin controlling EEV and the system.

Adjusting Controller Parameters

The controller is able to access an abundance of information
from the 4-digit alphanumeric display. However, the controller
requires a password, adding a degree of protection from un-
wanted modifications. The controller will prompt the user for
a password PASSWORD when the user attempts to access set-
points they do not have permission to change.
©Copyright 2015 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Table 1 shows the menu structure of the controller. The default
display of the controller always displays the actual room tem-
perature. Pressing the ENTER button will display room temp
ROOM TEMP. Pressing the up and down arrows moves the dis-
play through the VARIABLES menu. See Controller Navigation
on page 16. By default, the controller only allows access to the
room temperature. The VARIABLES menu consists of the cur-
rent 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 right or left arrow will move from the Variables
menu to the next menu, shown in the Controller Navigation on
page 16 a complete list of parameters is shown in Table 3
Pressing the BACK key at any time will return the user to next
level up the menu. A second press will either return to the Main
Menu or to the room temperature reading.
Table 2 - Introduction Mode
Mechanical Valve Defined EEV
TEV -
4 steps 5 steps
Room Temp Room Temp
Defrost Type Defrost Type
Valve Type Valve Type
KE2 Smart Access Refrigerant
KE2 Smart Access
Web Login
When accesssing the controller using the webpage, the
Username and Password are required.
The defaults are set as:
User: ke2admin Password: ke2admin
IMPORTANT: the Password should be changed from the de-
fault for security purposes
N.1.1 July 2015
Page 11
Custom EEV
8 steps
Room Temp
Defrost Type
Valve Type
Refrigerant
Motor Type
(Unipolar/Bipolar)
Motor Step Rate
Max Valve Steps
KE2 Smart Access