Ke2 Efficiency User manual

Parts List

The following parts are included in the

KE2 Evaporator Eciency (KE2 Evap) controller kits:

Kit #20178 with 120/208-240 VAC controller

Kit #20844with 120/208-240 VAC controller

Kit #20631with 120/208-240 VAC controller

Kit #21096with 120/208-240 VAC controller

Kit #20222Beacon® I & II replacement controller

(1) KE2 Evaporator Eciency controller

(1) high voltage safety shield

(3) 10’ temperature sensors

(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

(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 screw down terminal (for EEV)

(4) 3-position screw down terminals (for power in, transducer

and 3A relay)

(9) 2-position screw down terminals (for sensors and digital

input, analog output)

1) 120 Voltage jumper

(1) 208-240V Voltage jumper (already on back of KE2 Evap)

Q.1.3

July 2015

KE2 EvaporatorEfciency

Quick Start Guide

Supplies List

The KE2 Evap is supplied with all of the accessories required for the con-

troller to work, however, standard truck stock items will also be required

to install the controller. To simplify the installation, a list of items has

been provided.

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)

Accessories to Aid in Installation

The following parts are available separately:

10’Wire Harness pn 20736,

25’Wire Harness pn 20670

40’Wire Harness pn 20737

KE2 Evap Mounting Box pn 20687

Further information on the Wire Harness and Mounting Box can be found in

literature Q-1-21.

L M N

Left Arrow & Right Arrow

Use to move between Menus columns

Up Arrow & Down Arrow

Scroll through Menu Parameters

ENTER

Press and hold ENTER for 3 seconds, when

display is blinking changes can be made.

BACK

Press BACK to return to the previous view.

Press and hold ENTER for 3 seconds.

Change settings:

Save changes:

Moving through controller menus:

Return to 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 from parameter to value.

Togglebeween

description & value :

Menu Layout:

Variables Manual*

(view only)

Alarms

(view only)

ENTER

Setpoints Enter

Password

NO ALARM

EMAIL FAILURE

ROOMTEMP

DERIVATIVE

ROOMTEMP

FIRMWAREVERSION

MANUALCONTROL

CLEAR MD

Controller Navigation

ENTER

BACK

Press BACK 3 - 4 times

If you lose your place:

*For manual defrost use MANUAL CONTROL

BACK

24-hour Emergency Support: 1.888.337.3358 www.ke2therm.com

pn 21061 9-14

G H

This reference should remain on site with the installed KE2 Evaporator Eciency controller.

20844 KE2 Ultimate Install kit includes KE2 Mounting Box pn 20687 and 40’

colored temperature sensors

20631 kit does not include temperature sensors

21096 KE2 Supermarket Retrot kit also includes KE2 Mounting Box pn 20687,

10’ Wire Harness pn 20736, Ethernet Adaptor pn 20938, & Door Switch 20543

20222 Beacon® kit includes an extra temperature sensor, and pressure

transducer with cable.

Now with

Smart Access!

Get your controller

online in 3 easy steps.

See page16

Q.1.3 July 2015

Page 2

KE2 EvaporatorEfciency

Quick Start Guide

for low temperature applications and 8-10 degrees for medium

temperature.

Subcooling - There should be a solid column of liquid at the inlet of

the valve. This can be veried by looking at the sight glass, however,

the proper method requires measuring the subcooling of the liquid

entering the valve.

Verify Temperature Dierence

A typical Temperature Dierence (TD) between the coil temperature

and the air temperature is between 5 and 15°F. An insucient TD,

between the coil and air temperature, indicates a system issue that

needs to be addressed before installing the KE2 Evap Eciency.

Understanding Frost

The air exiting side of the evaporator is often the coldest spot on the

coil due to the load eecting the temperature. As air travels through

the ns of the evaporator, the Relative Humidity will reach 100%.

Moisture will begin to drop out of the air and deposit on the coil

surfaces to form frost. Although frost typically has a negative con-

notation when discussed in refrigeration, initial frost formation has

a positive eect. Some may even say “frost is our friend.” It is not un-

common to see a small amount of frost on the coils that have KE2

Evaporator Eciency (KE2 Evap) controllers installed. The KE2 Evap

is continually measuring, monitoring, and managing the frost to as-

sist in maximum energy eciency. When the eciency of the coil is

reduced due to excessive frost, the KE2 Evap will initiate a defrost.

Liquid/Vapor Mix

Restrictor,

TEV or EEV

Warm Liquid

Cold Vapor

Hot Vapor

Warm Air

Cold Air

Evaporator

Compressor

Condenser

Saturation Temp °F

(from receiver pressure)

Liquid Temp at Valve °F

Subcooling °

Suction Pressure PSI

Suction Temp °F

(evaporator outlet)

Saturation Temp °F

(calculated from Suct. Pressure)

Superheat °

Temp Dierence (TD) °F

(return air minus coil temp)

Coldest point in evap °F

AMPS

Trouble Shooting Diagram

Discharge Pressure PSI

Refrigerant

Arriving at the Jobsite

When arriving at any jobsite, it is good practice to verify the correct

operation of the system. Even systems running for a considerable

amount of time without requiring a service call may not be running

properly.

Inspect the coil to see the current frost pattern. If the unit has not

recently performed a defrost, look for the heaviest area of frost. This

will be used to locate the coil sensor.

Installers should account for a full system diagnostic in the installa-

tion estimate for the controller.

Although it may seem unnecessary, identifying system issues before

the controller is installed will save time overall. It will also allow the

controller to provide the highest energy savings.

Verify the system is running correctly. Taking several measurements

will help determine the current health of the system. Using the dia-

gram below, ll in the necessary information.

Two of the most critical indicators of system health are the super-

heat and subcooling.

Superheat - Superheat is the most overlooked ineciency in exist-

ing systems. Typically the superheat on a TEV is set when there is not

product in the controlled space, if it is set at all.

When applying the controller to an existing system with a mechani-

cal expansion valve, the superheat should be between 6-8 degrees

Q.1.3 July 2015

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KE2 EvaporatorEfciency

Quick Start Guide

IMPORTANT Preliminary Steps

Determine the coil sensor location

To determine the most appropriate sensor location, when arriving on

site, put the system into defrost.

The location where frost is last to disappear is where the coil sensor

should be placed. Monitor both the air entering side, as well as the air

exiting side, of the evaporator coil. Don’t be surprised if the last place

for frost to disappear is on the air exiting side. It is usually near the

right or left end of the coil.

It is important to verify all heating elements are working properly.

Steps to Ensure Proper Coil Sensor Location

More often than not on coils, the location of the sensor is a short

distance from the end, approximately 1 to 1-1/2”away from the right

and left edges of the active coil surface. The ice tends to grow from

these edges towards the center. Therefore, the sensor location is best

situated approximately 1 to 1-1/2”from the outer edges and typically

near the bottom 1/3rd portion of the evaporator. The sensor needs to

be as far away from the defrost heat sources as possible.

This is most easily located by viewing the current frost pattern. The

last place frost disappears during the defrost cycle is the correct sen-

sor location.

Note: Insert plug (Item I from parts list) into coil housing when

mounting sensor wire to prevent damage to the sensor from

sharp edges. Two plugs are provided. One plug should be inserted

into the inner housing to access the coil, and the other into the outer

housing to exit the coil. Installer must puncture plug to insert sensor.

As with any wiring installation, it is appropriate to leave a service

loop. Enough wire should be left to move the sensor to the opposite

end of the evaporator.

DMake note of the locations you have determined for placement

of the coil sensors.

Typically last spots to defrost

Locate sensor approx.

1-1/2” from end, in the

bottom third of coil

Item I from Parts List on page 1

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KE2 EvaporatorEfciency

Quick Start Guide

KE2EvaporatorEfficiency

thermsolutions

ENTER

BACK

KE2EvaporatorEfficiency

thermsolutions

ENTER

BACK

KE2EvaporatorEfficiency

thermsolutions

ENTER

BACK

At the entrance

On the wall

On the evaporator

11 Determining Location

The controller is designed to be as versatile as possible. The loca-

tion should be discussed with the end users to determine if they have

a preference. It is designed so it can be installed inside or outside the

controlled space.

The controller can also be located at the condenser, but should not

be installed outdoors without an enclosure to protect it from sun-

light and moisture (must be within operating range -40°F to 140°F)

KE2 EvaporatorEfficiency

thermsolutions

ENTER

BACK

Evaporator

Cut a length of conduit to go from the controller to the evaporator

Measure the distance between the controller and evaporator to ac-

count for the extra length necessary to properly route conduit.

Determine the number of wires to go to the controller.

Controller power (3 wires)

Fan control (2 wires)

Defrost (heater) control (2 wires)

Liquid line solenoid (2 wires)

If the Aux Relay is used, the installer will need to supply an ad-

ditional pair of wires to the controller

Aux relay (2 wires)

Note: Install in accordance with local wiring codes. KE2 Therm

does not accept responsibility for incorrect or unsafe wiring.

Cut wires to length

Once the number of wires is determined, cut the wires to length.

The wire should be long enough to account for the necessary con-

nections in the controller and evaporator.

Use the optional KE2 Wire Harness, or select dierent colored wires,

(blue - fan, orange - heaters, yellow - solenoid, purple - alarm). This

will simplify the installation and troubleshooting. If only a single

color is available, both ends of the wires should be labeled with a

matching number. This will save time when wiring the evaporator.

Determine the current draw of the unit.

Using the nameplate to determine the Amp rating of the unit. This

information should be used to select the proper sized wire. It should

also be used to verify the unit does not exceed the relay rating on the

KE2 Evaporator Eciency controller.

Q.1.3 July 2015

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KE2 EvaporatorEfciency

Quick Start Guide

Preparing conduit

Feed the wires through the conduit.

The conduit connectors can be added at this time. Determine if a

straight or 90 degree connector is most appropriate for the installa-

tion, and attach to the conduit.

Securely connect one end of the conduit to the controller.

5 5

120V 208-240V

Controller Power

Strip the end of the wires used to provide power to the controller (If

using the KE2 Wire Harness the wires are pre-stripped)

Locate a 3 position terminal in the accessories kit.

Fasten to the 3 position pluggable connector*.

Plug into the board as indicated in Wiring Schematic.

*All terminal screws should be tightened to 5 ft-lbs.

Wiring the controller

Locate the second Voltage Jumper in the accessory kit.

It is a 4 position plug with 2 red jumper already installed.

Use the plug with 1 jumper for 208-240V power or the jumper with

2 jumpers for 120V power.

Power is not connected to Voltage selector, it is a selector only.

Power for the controller is connected to the Power In location us-

ing a 3 position connector.

Controller still illuminates display when 120V is applied with 208-

240V selected, however controller will not function properly.

Fan Relay

Strip the end of the 2 wires used for fan control.

Locate 2 female spade connectors in the accessories kit.

Crimp on the female spade connectors.

Plug the connectors to the COM and NO positions of the Fan Relay.

Fan Relay Using the KE2 Wire Harness

The blue wires are used for fan control.

They are blue with a black stripe, and the black with a blue stripe.

Plug the black with a blue stripe to the COM terminal.

Plug the blue with a black stripe to the NO position of the Fan Relay

Conrm combined fan motor load is not over 10 amps

Defrost (Heater) Relay

Strip the end of the 2 wires used for the defrost control.

Locate the remaining 2 female spade connectors in accessories kit.

Crimp on the female connectors.

Plug the connectors to COM and NO positions of the Defrost Relay.

Defrost (Heater) Relay Using the KE2 Wire Harness

The orange wires are used for the heater control.

Locate the orange with black stripe, and black with orange stripe.

Plug the black with orange stripe to the COM terminal.

Plug the orange w. black stripe to the NO position of Defrost Relay.

Conrm combined heater load is not over 20 amps.

Q.1.3 July 2015

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KE2 EvaporatorEfciency

Quick Start Guide

Liquid Line Solenoid /Compressor Relay

the liquid line solenoid pluggable connector is supplied with an

in-line fuse to protect the controllers circuitry.

Locate a 3-position connector from the accessories kit.

Fasten the incoming power to the fused lead and the lead from the

liquid line solenoid to the NO terminal position.

Plug into the location as indicated in Wiring Schematic.

Liquid Line Solenoid (LLS)/Comp. Relay Using KE2 Wire Harness

The yellow wires are used for Liquid Line Solenoid control.

Locate a 3-position connector from the accessories kit.

Fasten the black with yellow stripe to the fused lead.

Fasten yellow w. black stripe from the LLS to NO terminal position.

Plug into the location as indicated in Wiring Schematic.

Max relay rating is 3A.

10 10

Auxiliary Relay

If using the Auxiliary Relay, the installer will need to supply an ad-

ditional pair of wires to the controller.

Strip approx. 1/4”wire insulation on end of the 2 wires for the alarm

Locate a 3-position connector from the accessories kit.

Plug into the location as indicated in Wiring Schematic.

Max relay rating is 3A.

Preparing the Evaporator

The evaporator wiring will require access to the high voltage termi-

nal block on the coil.

Turn o power to the system.

Verify power is no longer present using a multimeter.

Note: Before installing the safety cover, plug in any remaining connec-

tors to store for future use.

Install Safety cover

Once all of the high voltage wiring is complete, install the metal

cover on the controller.

Locate the cover and 3 small screws from the accessories kit.

Position the cover over the 3 mounting posts.

Using 2 course thread screws attach controller to the plastic posts.

Use the ne threaded machine screw with lock washer to fasten the

controller to the metal post.

Set the controller in a safe place.

12 12

13 13

Evaporator wiring

Now that the conduit is prepared, it can be connected to the

evaporator.

Locate the proper sized knockout and carefully remove knockout.

Connect conduit to the evaporator

Q.1.3 July 2015

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KE2 EvaporatorEfciency

Quick Start Guide

Study the existing wiring.

Determine the location of the fol-

lowing: incoming power, fan leads,

heater leads, defrost termination

leads, and fan delay leads.

Evaporator wiring – Controller

Strip the end of the wires used to

power the controller.

Attach to the line power to provide

continuous power to the controller.

Attach ground wire.

Note: Ground is required for the inter-

nal safeties to operate properly.

Evaporator wiring – Fans

Strip the ends of the wires (con-

nected to the KE2 Evap) used to con-

trol the evaporator fans.

The fan wires can be attached

to the terminal block using either

screw down terminals or spade

connectors.

Attach one of wires to the L1/Line.

This wire will be connected to COM

of fan relay on the controller.

Attach the wire connected to the

NO terminal on the Fan Relay to one

of the fan leads.

Connect L2/Neutral to remaining

fan lead.

17 17

KE2 Terminal Board

Q.1.3 July 2015

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Quick Start Guide

Evaporator wiring – Heater

Strip the ends of the wires being

used for heater control.

The heater wires can be attached to

the terminal block using either screw

down terminals or spade connectors.

Evaporator wiring – Liquid Line

Solenoid /Compressor

Strip the ends selected to control

the liquid line solenoid.

Attach the wire from the NO termi-

nal on the L.L. Solenoid/Compressor

relay to one of the solenoid leads.

Attach the wire from the COM on the

L.L. Solenoid/Compressor relay to the

L1/Line Voltage.

Connect L2/Neutral to the remain-

ing L.L. Solenoid/Compressor lead.

Remove defrost termination

(Klixon®) from circuitry

Attach one of wires to the L1/Line.

This wire will be connected to COM of

defrost relay on the controller.

Attach the wire connected to the

NO terminal on the Defrost Relay to

one of the defrost leads.

Connect L2/Neutral to the remain-

ing defrost lead.

The defrost safety should not be re-

moved from the circuit. Its purpose is

to prevent the heaters from over heat-

ing and causing damage.

KE2 Terminal Board

Q.1.3 July 2015

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KE2 EvaporatorEfciency

Quick Start Guide

Wiring Schematic - Controller New Installation

Q.1.3 July 2015

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Quick Start Guide

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

Wiring Schematic - Controller with KE2 Contactor Box

Existing Defrost Heaters Max Current Ratings

(Amps are Total All Heaters)

Relay Box P/N 230V 3Ø460V 3Ø575V 3Ø

20217 54 Amps 52 Amps 52 Amps

20218 68 Amps 65 Amps 62 Amps

20219 80 Amps 77 Amps 62 Amps

Legend

EFM - Evaporator Fan Motor

DH - Defrost Header

LLS - Liquid Line Solenoid

AUX - Auxiliary

PT - Pressure Transducer

T1 SUCTION - Suction Temperature

T2 AIR - Return Air Temperature

T3 COIL - Evaporator Coil Temperature

T4 AUX - Auxiliary Temperature

EEV - Electric Expansion Valve

ECM - Electronically Commutated Motor

D1 - Digital Input 1

D2 - Digital Input 2

D3 - Digital Input 3

- - - By others

All eld wiring must conform to

local codes

Contactor ratings per UL508 CSA 22.2

Wiring Schematic - Controller with KE2 Contactor Box

P/N: 20217 - 50A

20218 - 65A

20219 - 80A

Q.1.3 July 2015

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KE2 EvaporatorEfciency

Quick Start Guide

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.

22 22

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 8 - 10 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.

Coil Sensor

The coil sensor location is of the utmost importance for the

proper operation of the controller. It is essential that the sen-

sor is in the coldest location on the coil at the end of the defrost

cycle, to ensure a complete defrost. See preliminary steps A-D on

page 3 to determine the coldest location on the coil.

Once you determine the proper sensor location, as described in pre-

liminary steps A-D on page 3, the sensor can be installed.

1.5”

Thermistor

Epoxy

.5”

Installing the Sensor Properly

Note, the most active portion of the sensor is the rst 1/2” of the

1-1/2” long stainless steel probe. Figures 25 and 26 show two meth-

ods for installing the sensor in the coil. The method shown in 25 will

work in most applications, however in some cases inserting the sen-

sor into the coil may position it too close to the defrost heat source. In

these instances, the method shown in Figure 26 can be used.

A B

KE2 EvaporatorEfciency

Quick Start Guide

Q.1.3 July 2015

Page 12

Alternate method - As the defrost termination sensor, it is important

to ensure the sensor does not terminate defrost before all frost has

been 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 be-

tween the coil ns. This shows the coil sensor properly secured.

Extending sensor wires

After the sensors are mounted, they are routed back to the control-

ler. If the wires must be extended, use 18 gauge twisted shielded

pair. Maximum length for 18 gauge: 100ft.

When running the wires back to the controller care must be tak-

en to avoid interference being introduced into the sensor wires.

Interference can be introduced when sensor wires are located

near high voltage lines. High voltage is dened by Underwriter’s

Laboratories as above 30V. The higher voltage the more likely it is to

introduce interference, and the more important to avoid.

If crossing a high voltage line is necessary, the sensor wiring should

be run at right angles to prevent noise.

Figure 25A shows the sensor touching two circuit tubes. When in-

serting the sensor into the coil, the tip should touch one of the cir-

cuit tubes. It should not be located adjacent to the electric heating

elements. It should be about half the distance between the heat-

ers if possible. In Figure 25B the probe is inserted into the ns ap-

proximately 1/16” deeper than the stainless shielding. Pinch the ns

gently together, securing the sensor in place. This provides thermal

ballast to ensure a complete defrost.

Connecting sensor wires to controller

The temperature sensors are designed to be attached to the con-

troller using 2 position screw terminals. Using a connector from the

accessory kit, attach the sensor to the screw terminal. The sensors are

not polarized, so wire location does not eect sensor performance.

Connect all sensors to a screw terminal.

Once connected, the sensors should be plugged into the proper lo-

cation on the controller. The location can be determined from the la-

bel on the interior wall of the enclosure or from the Wiring Schematic.

Strain relief

The enclosure is designed with a strain relief bar to prevent the sen-

sor wires from becoming unplugged from inadvertent contact.

Before securing the sensor wires, create a service loop. Figure 27.

Using a cable tie from the accessory kit, securely fasten the sensor

wires to the strain relief bar.

Note: Unused connectors should be placed (installed) in their re-

spective location for future use.

Controller Mounting

Locate the 4 stainless steel screws in the accessories kit

Install the 4 screws

Place the controller on the mounting screws and tighten down the

screws.

Final Step

Leave the installation instructions onsite in a convenient location,

where it can be easily located, for future service.

Q.1.3 July 2015

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KE2 EvaporatorEfciency

Quick Start Guide

Specications

Controller

Input Voltage: 120V or 208 - 240V

Ambient Temp: -40° to 140°F

Operating Temp: -40° to 140°F

Display: 4-digit alphanumeric LED

IP Rating: IP65

Inputs: (4) temperature sensors (KE2 SKU 20200)

(1) pressure transducer (KE2 SKU 20204)

Valve Types: unipolar and bipolar stepper motors (12V) (Beacon®is 21V)

Relays:

20A resistive (defrost)

10A inductive (evaporator fan)

(2) 3A inductive rated cycles

Digital Input 1: door contact, use 2nd air temp setpoint, disabled, system

o, external alarm notication

Digital Input 2: door contact, use 2nd air temp setpoint, disabled, system

o, external alarm notication, defrost lockout, defrost

interlock

Digital Input 3: door contact, use 2nd air temp setpoint, disabled, system

o, external alarm notication, lights

Communication: Standard TCP/IP

Pressure Transducer - pn 20201 (10 ft lead) or pn 20204 (40 ft lead)

Pressure Range: 0 to 150 psia

Proof Pressure: 450 psi

Burst Pressure: 1500 psi

Operating Temp: -40° to 275°F

Temperature Sensor

Sensor Specs: -60° to 150°F moisture resistant package

208-240

120

Temperature Sensors Pressure

Transducer

T1SuctT4Aux T2AirT3Coil

line /L1

ground

neutral /L2

NO NC

COM

Power In

green

red

black

Transformer

3A Relay

COM

COM NC

18V

DI 1

DI 3

DI 2

Electric Valve:

Temperature Sensors (4) Pressure Transducer

RJ45 Ethernet Connection

DAC for ECM Fan

Fuse

empty

red

green

white

black

Auxiliary Relay

Fan Relay

(10 amp)

ground

signal +5

Defrost (Heater) Relay

(20 amp)

1/2 or 500mA

Time Delay

Liquid Line Solenoid

Power In

(compressor)

door switch

system o

dual temp setting

external alarm

light switch

defrost interlock

defrost lockout

Digital Inputs

Pressure Transducer

Wiring Detail

black

red

green

Voltage

Selector

120V - Jumpers

1&2 3&4

208-240V Jumper

2&3 only

1 2 3 4

0-10V analog out

KE2 HSV KE2 RSV

blue

orange

yellow

red

black

yellow

blue

red

white

black

Beacon® I

blue

red

white

black

Beacon® II

brown

green

white

black

Beacon® II

Part Number

20222 Beacon

replacement

controller

required.

Wiring Diagram

KE2 EvaporatorEfciency

Quick Start Guide

Q.1.3 July 2015

Page 14

Table 1 - Controller Navigation - Menu Structure

Parameters:

MANUAL CONTROL

MANUAL VALVE4

CLEAR ALARMS

MANUAL COMPRESSOR RELAY

MANUAL DEFROST RELAY

MANUAL FAN RELAY

MANUAL AUX RELAY

FACTORY RESET

WEB PASSWORD RESET

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

FTP

SNTP

Alarms

(view only)

ENTER

Left and Right Arrows Use to move between Menus

Up Arrow and Down Arrow

Scroll through Menu Parameters

ENTER

Press and hold ENTER for 3 seconds, when display

begins blinking changes can be made

BACK

Press BACK to return to the previous view.

ENTER

Press and hold ENTER for 3 seconds to save change

To change settings:

To save setting changes:

To move through

controller menus:

To return to Main Menu:

Indicator lights Red light - critical alarm (system o)

Yellow light - non-critical alarm (system running)

Green light - compressor on

Green ashing - compressor waiting on timer to start/stop

KE2 EvaporatorEfficiency

thermsolutions

ENTER

BACK

1 T1 and T4 are parameters that

can be set to various functions.

The default for T1 is Suction

Temp, the 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 only displayed

when a Custom EEV is used.

4 Displayed when an EEV is used.

5 Only available if mechanical

valve is selected. When using an

electric valve the default,

suction temperature, is required.

6 The Setpoint parameters shown

in BOLD ITALIC are used for

bonded controllers only.

7 Only displayed when Run Time

Defrost is selected.

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

ENTER

Press ENTER to go from parameter to value.

To toggle beween

description and value :

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

Variables for DIG IN STATUS

DISABLED

2ND (ROOM) TEMP

DOOR SWITCH

EXT ALARM

SYSTEM OFF

DEFROST LOCKOUT

DEFROST INTERLOCK

Enter

Password

Q.1.3 July 2015

Page 15

KE2 EvaporatorEfciency

Quick Start Guide

Table 1 shows the menu structure of the controller. The default dis-

play of the controller always displays the actual room temperature.

Pressing the ENTER button will display room temp ROOM TEMP.

Pressing the up and down arrows moves the display through the

VARIABLES menu. See Controller Navigation on page 16. By de-

fault, the controller only allows access to the room temperature. The

VARIABLES menu 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 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

TEV - 4 steps

Dened 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

Smart Access Refrigerant Refrigerant

Smart Access Motor Type (Unipolar/Bipolar)

Motor Step Rate

Max Valve Steps

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 default

for security purposes.

User Interface

The KE2 Evap’s onboard user interface uses a familiar 6-button ar-

rangement to simplify navigation through the controller’s menus.

The menu has been grouped by category to provide an easy to pro-

gram structure. By grouping the menu by each functional area, the

user is not required to scroll though unrelated setpoints to access the

desired functionality.

The left and right arrows move between the categories. 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 op-

tions for each group. All users are allowed access to the variable

alarms. All other information is password protected to prevent unau-

thorized 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. Pressing

the BACK button twice at any time will return the user to the default

view. See Table 1.

Controller Setup

Upon initially applying power to the controller, the controller will ini-

tialize, then automatically enter the Introduction Mode. The Intro-

duction Mode consists of as little as 3 setpoints that must be cong-

ured for KE2 Evap to begin controlling the system. See Table 2.

The rst setpoint the user is asked to enter is the desired ROOM

TEMP. This is followed by the DEFROST TYPE. The controller is de-

signed to work with electric, hot gas, and o 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, in-

cluding a customer dened valve. To easily view your controller on-

line enable SMART ACCESS.

These are the only setpoints required to begin controlling the sys-

tem, when applied on a single evaporator with a mechanical valve.

If using a standard/predened EEV, the user will also be prompted to

specify the REFRIGERANT. The KE2 Evap may also be applied to user

dened 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 has the ability to access an abundance of informa-

tion from the 4-digit alphanumeric display. However, the controller

requires a password, adding a degree of protection from unwanted

modications. The controller will prompt the user for a password

PASSWORD when the user attempts to access setpoints they do not

have permission to change.

Q.1.3 July 2015

Page 16

KE2 EvaporatorEfciency

Quick Start Guide

Introduction to Smart Access

Smart Access provides quick and easy, real time access to your refrig-

eration systems 24/7

The KE2 Evap controller has always been internet accessible, but

now it is easier than ever to monitor and adjust your KE2 Evap

remotely. With the new version 4.0 firmware Smart Access is in-

cluded.

Smart Access doesn’t require port forwarding or establishing a

vpn. All the KE2 Evap needs is a physical connection to the net-

work router with a cat 5 cable. Smart Access will automatically

connect to your personal web portal.

And, Smart Access provides a “customized” dashboard of all the

controllers on that network on one page.

Preliminary

Connect the KE2 Evap to the customer’s network.

CAT5 Ethernet

Cable

KE2 EvaporatorEfficiency

thermsolutions

ENTER

BACK

1 2 3 654 7

Link/ACT

100/1000Mbps

POWER

Customer Network

Screen shot of a single KE2 Evap connected through Smart Access

Screen shots of Smart Access dashboard. Controller and system information is displayed for all of the

controllers on the portal.

Benets of Smart Access

Smart Access auto launches, and can eliminate

the need for costly IT support

Doesn’t require port forwarding or a vpn

Customized dashboard lets you remotely view

all the controllers on one page

It’s easier than ever to set up every controller

you service to provide alarm notications via

text or e-mail

Easy setup of remote monitoring & system

control

Smart Phone

MODIFY STATUS

ABC Contracting

(888)555-3358

All Clear

Compressor

System Mode

Cool Evaporator Fan

Off

Room Temp

-8.5 F Coil Temp

15.4 F

Sat Temp

46.0 F

Superheat

0.0 F Valve Position

Manual

Suct Pressure

96.2 F Suct Temp

87.7 F

Dig Input 3

Dis

Defrost

Off Aux Temp

Dis

Dig Input 1

Closed Dig Input 2

Dis

PC/Mac iPad/Tablet

MODIFY STATUS

ABC Contracting

(888)555-3358

All Clear

Compressor

System Mode

Cool Evaporator Fan

Off

Room Temp

-8.5 F Coil Temp

15.4 F

Sat Temp

46.0 F

Superheat

0.0 F Valve Position

Manual

Suct Pressure

96.2 F Suct Temp

87.7 F

Dig Input 3

Dis

Defrost

Off Aux Temp

Dis

Dig Input 1

Closed Dig Input 2

Dis

Q.1.3 July 2015

Page 17

KE2 EvaporatorEfciency

Quick Start Guide

Step 3

Enter default information

Enter default information, and click Log In button.

Site: installer

Password: controllers Mac Address

(from sticker on back of controller)

Step 1

Enable Smart Access in the

Introduction Mode menu

After setting the Room Temp, Defrost Type and

Valve Type, set Smart Access to Enabled.

Use the or arrow to change Smart Access

to Enabled. Press and hold the

ENTER

button for 3

seconds to save the change.

Note: if using a Dened EEV, Refrigerant must be

selected too.

Note: if using a Custom EEV Refrigerant, Motor

Type, Motor Step Rate, and Max Valve Steps must be

selected.

Introduction Mode

Mechanical Valve TEV

4 steps

Dened 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

Smart Access Refrigerant Refrigerant

Smart Access Motor Type (Unipolar/Bipolar)

Motor Step Rate

Max Valve Steps

Smart Access

Step 2

Go to smartaccess.ke2therm.net

Using your PC, tablet or smartphone, enter

http://smartaccess.ke2therm.net in the web

browser’s address bar.

Smart Access - Online Access In 3 Easy Steps

installer

IP-10.10.52.19

MAC

00:04:A3:14:E5:92

IP-10.10.52.19

MAC

00:04:A3:14:E5:92

For additional information on SmartAccess, visit

http://ke2therm.com/productliteratureevap4.

html, and see bulletins A.1.76 The KE2 Evap v4.0

with Smart Access and Q.1.34 Smart Access Setup

and Customizing.

KE2 EvaporatorEfciency

Quick Start Guide

Q.1.3 July 2015

Page 18

Setpoints Menu - STPT

Parameter Name Description Range Default Current

ROOM TEMP Walk-in freezer or cooler room temperature to be maintained -50°F to 90°F -10°F

DEFROST TYPE Method of defrost used on the evaporator coil: Electric, Air, Hot Gas with Liquid Line Solenoid/Compressor relay o, Hot Gas with

Liquid Line Solenoid/compressor relay on ELEC, AIR, HOT GAS COMP ON, HOT GAS COMP OFF ELEC

VALVE TYPE Type of valve used on the system: mechanical, pre-congured electric, custom EEV conguration MECHANICAL, KE2 RSV, KE2 HSV, SER/SEI 1 TO 20, SER B TO L, SEI 30, SEI 50, SEH, ETS12 TO 50,

ETS100, ETS250/400, CAREL, CUSTOM; MECHANICAL

Custom

EEV only

MOTOR TYPE If VALVE TYPE = CUSTOM: The motor type used in the valve BIPOLAR, UNIPOLAR BIPOLAR

MOTOR STEP RATE If VALVE TYPE = CUSTOM: The motor speed setting in number of steps per second 30 to 400 steps/second 200 steps

MAX VALVE STEPS If VALVE TYPE = CUSTOM: The total number of steps required to move the valve from closed to fully open 200 to 6400 steps 1600 steps

SUPERHEAT The superheat value that the controller will maintain, (not applicable if VALVE TYPE = MECHANICAL) 5°F to 30°F 8°F

MAX OPERATING PRES The maximum allowable suction pressure, (not applicable if VALVE TYPE = MECHANICAL) 10-500 psig if R-744 selected, 10-300psig if R-410A selected, 10-150 psig all other refrigerants 150 psig

REFRIGERANT The type of refrigerant used in the refrigeration system 404A, R507, 407A, 407C, 422A, 422D, 134A, R22, R717, 438A, 408A, 409A, 407F, 410A, R744 404A

AUX TEMP 4 MODE Conguration mode of the auxiliary temperature sensor DISABLED, MONITOR, T4 ROOM TEMP, T4 COIL TEMP DISABLED

AUX TEMP 1 MODE Conguration mode of the auxiliary temperature sensor (Not available if EEV is selected) T1 SUCTION TEMP, MONITOR, T1 ROOM TEMP, 2ND COIL TEMP T1 SUCTION

AUX RELAY MODE Conguration mode of the auxiliary relay. ALARM RELAY, 2ND COMP RELAY, 2ND FAN RELAY, 2ND DEFR RELAY, 2 SPEED FAN CTL, LIGHT

RELAY, PERM DEFROST RELAY ALARM RELAY

FAN SPEED Provides 0-10V DC signal to control variable speed -100% to 100% 0.000 (O)

MIN COMP RUN TIME Minimum amount of time the liquid line solenoid/compressor relay must remain on after it is energized 0 to 15 minutes 2 minutes

MIN COMP OFF TIME Minimum amount of time the liquid line solenoid/compressor relay must remain o before it can be energized again. 0 to 15 minutes 5 minutes

REFRIG FAN MODE Fan operation while in refrigeration mode ON WITH COMPRESSOR, PERMANENT, MANAGED, CONTROL FOR TITLE 24 ON WITH COMPRESSOR

DEFROST MODE The method the controller uses to determine when to initiate a defrost. DEMAND, SCHEDULED, RUN TIME DEMAND

DEFROSTS / DAY If DEFROST MODE = SCHEDULED: The number of evenly spaced defrosts per day the controller will initiate. 0 to 8 5

1ST DEFROST DELAY If DEFROST MODE = SCHEDULED: The amount of time from controller power up until the rst defrost is initiated. 0 to 240 minutes 120 minutes

DEFROST FAN STATE Whether or not to run the evaporator fans during defrost ON/OFF OFF if DEFROST TYPE = ELEC, HOT GAS COMP ON, HOT GAS COMP OFF

ON if DEFROST TYPE = AIR

DEFROST TERM TEMP The temperature the coil sensor(s) must exceed in order to terminate defrost. The defrost relay is de-energized at this point. 35°F to 90°F 50°F if DEFROST TYPE = ELEC, HOT GAS COMP ON, HOT GAS COMP OFF

40°F if DEFROST TYPE = AIR

DEFROST PARAMETER if DEFROST MODE = DEMAND: Coecient to KE2 Defrost algorithm 0 to 90 30 if DEFROST TYPE = ELEC

10 if DEFROST TYPE = HOT GAS COMP ON, HOT GAS COMP OFF

40 if DEFROST TYPE = AIR

MAX DEFROST TIME If DEFROST MODE = SCHEDULE or RUNTIME: The maximum amount of time the defrost relay will be energized. (Not available if DEFROST MODE = DEMAND) 0 to 90 minutes 45 minutes if DEFROST TYPE = ELEC

10 minutes if DEFROST TYPE = HOT GAS COMP ON, HOT GAS COMP OFF

40 minutes if DEFROST TYPE = AIR

DRAIN TIME Time to be in drain mode (drip time) 0 to 15 minutes 2 minutes

COMP RUN TIME If DEFROST MODE = RUN TIME: The amount of time liquid line solenoid/compressor relay is energized before the next defrost is initiated. 0 to 24 hours 6 hours

ELEC DEFROST MODE If DEFROST TYPE = ELEC: Whether to leave the defrost relay energized during the defrost cycle or to utilize advanced defrost algorithm. PULSE, PERMANENT PULSE

FAN DELAY TEMP After defrost, the coil sensor reading must fall below this temperature set point in order for the controller to resume normal fan operation. -40°F to 35°F 20°F

MAX FAN DELAY TIME Maximum amount of time after defrost to resume normal fan operation. 0 to 20 minutes 2 minutes

PUMP DOWN TIME Minimum amount of time between de-energizing the liquid line solenoid/compressor relay and energizing the defrost relay. 0 to 90 minutes 0 minutes if DEFROST TYPE = ELEC or AIR,

2 minutes if DEFROST TYPE = HOT GAS ON/OFF

MULTI AIR TEMP CTRL Select control method to use with multiple room temperature sensors AVERAGE, WARMEST WARMEST

Bonded

Control-

lers Only

MULTI EVAP COOL Select type of multi evaporator control - options are synchronous or independent SYNC, INDEPENDENT SYNC

MULTI EVAP DEFROST Select whether to have all bonded controllers initiate defrost mode at the same time or independently. SYNC, INDEPENDENT SYNC

MULTI EVAP SENSOR Select whether or not to share room temperature, coil temperature and suction pressure sensor data with bonded controllers. SHARED, NOT SHARED SHARED

HIGH TEMP ALARM OFFSET The number of degrees above ROOM TEMP for a HIGH TEMP ALARM condition. 0°F to 99.9°F 10°F

HIGH TEMP ALARM DELAY Minutes the room temperature must remain above ROOM TEMP + HIGH TEMP ALARM OFFSET before issuing a HIGH TEMP ALARM 0 to 120 minutes 60 minutes

LOW TEMP ALARM OFFSET The number of degrees below ROOM TEMP for a LOW TEMP ALARM condition. 0°F to 20°F 4°F

LOW TEMP ALARM DELAY Minutes the room temperature must remain below ROOM TEMP - LOW TEMP ALARM OFFSET before issuing a LOW TEMP ALARM 0 to 30 minutes 10 minutes

DOOR ALARM DELAY If DIG IN (1, 2 and/or 3) MODE = DOOR SWITCH: The amount of time, in minutes, before an alarm condition is initiated if door is open and room

temperature is 5 degrees above ROOM TEMP + AIR TEMP DIFF 0 to 180 minutes 30 minutes

DIG IN 1 MODE Sets the function of the digital input DISABLED, 2ND ROOM TEMP, DOOR SWITCH, EXT ALARM, SYSTEM OFF DOOR SWITCH

DIG IN 1 STATE Sets whether the switch activates when opened or closed OPEN, CLOSED CLOSED

DIG IN 2 MODE Sets the function of the digital input DISABLED, 2ND ROOM TEMP, DOOR SWITCH, EXT ALARM, SYSTEM OFF, DEFR INTERLOCK,

DEFR LOCKOUT DISABLED

DIG IN 2 STATE Sets whether the switch activates when opened or closed OPEN, CLOSED CLOSED

DIG IN 3 MODE Sets the function of the digital input DISABLED, 2ND ROOM TEMP, DOOR SWITCH, EXT ALARM, SYSTEM OFF, LIGHT SWITCH SYSTEM OFF

DIG IN 3 STATE Sets whether the switch activates when opened or closed OPEN, CLOSED CLOSED

2ND ROOM TEMP If DIG IN (1, 2 and/or 3)MODE = 2ND ROOM TEMP: This value becomes the ROOM TEMP setpoint when the digital input is active -50°F to 90°F -50°F

SUCT PRES OFFSET An oset added or subtracted from the suction line pressure transducer reading, if needed -5.0 to 5.0 psig 0.0 psig

SUCT TEMP OFFSET An oset added or subtracted from the suction temperature sensor reading, if needed -5.0°F to 5.0°F 0.0°F

AIR TEMP OFFSET An oset added or subtracted from the room temperature sensor reading, if needed -5.0°F to 5.0°F 0.0°F

COIL TEMP OFFSET An oset added or subtracted from the coil temperature sensor reading, if needed -5.0°F to 5.0°F 0.0°F

AUX TEMP OFFSET An oset added or subtracted from the auxiliary temperature sensor reading, if needed -5.0°F to 5.0°F 0.0°F

TEMP UNITS Units for temperature’s display in °F or °C FAHRENHEIT/CELSIUS FAHRENHEIT

AIR TEMP DIFF The number of degrees above ROOM TEMP before the controller will go into REFRIGERATION mode 0.1°F to 5°F 1°F

EXTREME TEMP DIFF ADVANCED TOPIC: Call KE2 Therm for assistance

PROPORTIONAL A coecient to the valve control algorithm that increases valve responsiveness 0 to 255 3

INTEGRAL A coecient to the valve control algorithm that increases valve responsiveness 0 to 255 5

DERIVATIVE Should not be adjusted unless instructed by KE2 Therm technical support 0 to 255 3

Table 3 - Controller Menus and Menu Parameters

Q.1.3 July 2015

Page 19