Ke2 therm solutions 20893 User manual

Q.1.23

November 2014

KE2 ControlledEnvironment

Quick Start Guide

Supplies List

The KE2 Controlled Environment is supplied with all of the accessories

required for the controller 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.

N O P

K Q R

This reference should remain on site with the installed KE2 Controlled Environment.

(1) 5-position screw down terminal (for 4 wire BIPOLAR EEV)

(1) 120 Voltage jumper & (1) 208-240V Voltage jumper

(208-240V already on back of KE2 Controlled Environment)

(4) 90 degree quick disconnects

(3) 40’ temperature sensors

(1) 40’ humidity sensor

(1) pressure transducer and 40’ cable

(1) KE2 Terminal board with fuses

(1) warranty card (not shown)

Optional Accessory (Not included in kit):

For increased functionality, an External Digital Switch Relay is available.

This can be used for heaters, humidication or de-humidication, if

standard relays are used for other functions.

External Digital Switch Relay (pn 21032) - only used when Digital

Switch Relay is required

(1) KE2 Controlled Environment

(2) 1/2” plastic knockout plugs

(1) high voltage safety shield

(1) mounting box and hardware

(1) aux relay in-line fuse

(1) air sensor mount

(5) self-tapping screws

(4) wire ties (rated for low temp)

(2) course thread screws

(1) ne thread machine screw with lock washer

(1) wire harness

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

input, analog output)

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

& 3A relays)

Parts List: The following is included in KE2 Controlled Environment kit:

Kit #20893 with 120/208-240 VAC controller - 25’ wire harness

Kit #20897 with 120/208-240 VAC controller - 40’ wire harness

Conduit to go between the controller and the evaporator

(2) Conduit connectors (straight or elbow as required)

(8) Spade Connectors matched to the gauge of high voltage wires

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)

NOTE: The KE2 Controlled Environment will ONLY

drive BIPOLAR Electronic Expansion Valves. NOT

for use with the KE2 RSV.

Q.1.23 November 2014

Page 2

KE2 ControlledEnvironment

Quick Start Guide

degrees for low temperature, and 8-10 degrees for medium tempera-

ture applications.

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 tempera-

ture 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 Controlled

Environment.

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

Controlled Environment controllers installed. The KE2 Controlled

Environment is continually measuring, monitoring, and managing

the frost to assist in maximum energy eciency. When the ecien-

cy of the coil is reduced due to excessive frost, the KE2 Controlled

Environment 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, it should include

an electronic expansion valve, the superheat should be between 6-8

Q.1.23 November 2014

Page 3

KE2 ControlledEnvironment

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 B 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 B from Parts List on page 1

Q.1.23 November 2014

Page 4

KE2 ControlledEnvironment

Quick Start Guide

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)

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.

The wire whip has the following wires that 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 wire locations are determined, cut the wires to length.

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

nections in the controller and evaporator.

Using the wire harness with dierent colored wires, (blue - fan,

orange - heaters, yellow - solenoid) will simplify the installation and

troubleshooting.

3 3

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 Controlled Environment controller.

4 4

Q.1.23 November 2014

Page 5

KE2 ControlledEnvironment

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

Wiring the controller

Locate the second Voltage Jumper in the accessory kit.

It is a 4 position plug with 2 jumpers 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.

The controller display will illuminate when 120V is applied with

208-240V selected, however it will not function properly.

6 6

Controller Power

The wires used to provide power to the controller are pre-stripped.

Simply pull o the insulation.

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.

Fan Relay

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

The orange wires are used for the heater control.

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

stripe.

Plug the black with orange stripe to the COM terminal.

Plug the orange with black stripe to the NO position of the Defrost

Relay.

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

9 9

Q.1.23 November 2014

Page 6

KE2 ControlledEnvironment

Quick Start Guide

Liquid line solenoid (LLS) /Compressor Relay

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 an additional pair of wires will need to

be supplied to the controller by the installer.

the Aux relay pluggable connector is supplied with an in-line fuse

to protect the controllers circuitry.

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

Locate a 3-position connector from the accessories kit.

Fasten one wire to the screw terminal, and the other to the end of

the in-line fuse using an appropriately sized wire nut.

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 safety cover, plug in remaining connectors to

store for future use.

Install Safety cover

Once high voltage wiring is done, install metal cover on controller.

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

Position the cover over the 3 mounting posts.

Using 2 course threaded screws attach controller to 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.

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

1414

Q.1.23 November 2014

Page 7

KE2 ControlledEnvironment

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.1.23 November 2014

Page 8

KE2 ControlledEnvironment

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.

Q.1.23 November 2014

Page 9

KE2 ControlledEnvironment

Quick Start Guide

EXTERNAL DIGITAL SWITCH

DEFROST (HEATER)/

DEHUMIDIFICATION

RELAY

Wiring Schematic -

Controller New Installation

Legend

EFM - Evaporator Fan Motor

DH - Defrost Heater

LLS - Liquid Line Solenoid

AUX - Auxiliary

PT - Pressure Transducer

T1 SUCTION - Suction Temperature

T2 AIR - Return Air Temperature

T3 COIL - Evaporator Coil Temperature

EEV - Electric Expansion Valve

ECM - Electronically Commutated Motor

D1 - Digital Input 1

D2 - Digital Input 2

D3 - Digital Input 3

HS - Humidity Sensor

- - - By others

All eld wiring must conform to local codes

Q.1.23 November 2014

Page 10

KE2 ControlledEnvironment

Quick Start Guide

EXTERNAL DIGITAL SWITCH

DEFROST (HEATER)/

DEHUMIDIFICATION

RELAY

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

Figure 9 - 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

Wiring Schematic - Controller with KE2 Contactor Box

P/N: 20217 - 50A

20218 - 65A

20219 - 80A

Legend

EFM - Evaporator Fan Motor

DH - Defrost Heater

LLS - Liquid Line Solenoid

AUX - Auxiliary

PT - Pressure Transducer

T1 SUCTION - Suction Temperature

T2 AIR - Return Air Temperature

T3 COIL - Evaporator Coil Temperature

EEV - Electric Expansion Valve

ECM - Electronically Commutated Motor

D1 - Digital Input 1

D2 - Digital Input 2

D3 - Digital Input 3

HS - Humidity Sensor

- - - By others

All eld wiring must conform to local codes

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.

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.

KE2 ControlledEnvironment

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 dehumidication, 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.

KE2 ControlledEnvironment

Quick Start Guide

Q.1.23 November 2014

Page 12

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 have determined the proper sensor location as described

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

Insert the probe into the ns approximately 1/16” deeper than the

stainless shielding of the probe. Pinch the two ns gently together to

secure the sensor in place. This provides the thermal ballast to ensure

a complete defrost every time.

1.5”

Thermistor

Epoxy

.5”

Installing the Sensor Properly

It is important to note, the most active portion of the sensor is the

rst 1/2”of the 1-1/2”long stainless steel probe.

As a result, it is important to touch two circuit tubes. When inserting

the sensor into the coil, the tip should touch one of the circuit tubes.

This location provides an appropriate location for the sensor.

Pressure Transducer

The pressure transducer should be installed at the outlet of the

evaporator. It requires a ¼ inch Schrader port for installation. Many

evaporator models have a preexisting service port on their suction

headers. If a service port is not available, one should be added to

the system when the system is pumped down to add the Electric

Expansion Valve.

Q.1.23 November 2014

Page 13

KE2 ControlledEnvironment

Quick Start Guide

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 being above 30V. The higher the 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.

Sensor mounted on same side of coil as distributor tube entry.

Suction Sensor

Suction sensor location will aect the controller’s superheat. Ensure

proper system operation by locating the sensor at the 4 o’clock or 8

o’clock position. This ensures accurate superheat, avoiding potential

problems. Specic areas to be avoided are the top and bottom of the

tube. Locating the sensor on the top of the suction line introduces

the potential for the denser liquid refrigerant, which travels along the

bottom of the tube, to get past.The bottom of the sution line may be

coated with the system’s oil, creating an insulating barrier between

the refrigerant and the sensor.

Installing the Humidity Sensor

The humidity sensor should be located in an area the represen-

tative of the controlled space. When selecting the sensor location,

some areas should be avoided. Large openings to the space have the

potential to allow large amounts of humidity to enter the space and

provide a false high humidity reading. Conversely, locating the sen-

sor away from all openings or an area with poor air movement may

provide a false low humidity reading.

When installing the sensor, the orientation of the sensor is impor-

tant. The senor must be placed with the metal cylinder in the

downward direction. Orientating the sensor with the cylinder in

either a horizontal or upside down position will result in inaccurate

readings.

The humidity sensor comes precongured and prewired with a 40

foot lead from KE2 Therm. Installers should not open the water-

tight housing and make adjustments without consulting KE2 Therm

Technical Support. If the sensor must be located more than 40 feet

from the controller, its cable may be extended to 100 feet using

twisted, shielded pair. When extending beyond 100 feet, contact

KE2 Therm.

Suction

Sensor

KE2EvaporatorEfficiency

thermsolutions

ENTER

BACK

Mount sensor at

4 o’clock or 8 o’clock

Incorrect Correct

KE2 ControlledEnvironment

Quick Start Guide

Q.1.23 November 2014

Page 14

Connecting sensor wires to controller

The sensors are designed to be attached to the controller using

screw terminals. Using a connector from the accessory kit, attach

each sensor to the appropriate screw terminal.

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 has been designed with a strain relief bar to pre-

vent the sensor wires from becoming unplugged from inadvertent

contact.

Before securing the sensor wires, create a service loop as shown in

Figure 32.

Using the cable ties from the accessory kit, securely fasten the sen-

sor wires to the strain relief bar.

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

spective location for future use.

32 32

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.

33 33

Final Step

Leave the installation instructions onsite in a convenient location,

where it can be easily located, for future service.

Q.1.23 November 2014

Page 15

KE2 ControlledEnvironment

Quick Start Guide

208-240

120

Pressure

Transducer

T1SuctT2AirT3Coil

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

HSV Electric Valve

Temperature Sensors (3)

Pressure Transducer

RJ45 Ethernet Connection

ECM Fan

Fuse

ground

red

green

white

black

Aux Relay

Fan Relay

(10 amp)

ground

signal +5

Defrost (Heater)/

Dehumidication Relay

(20 amp)

1/2 or 500mA

Time Delay

Liquid Line Solenoid

Power In

(compressor)

Disabled

2nd Temp

Door Switch

Ext Alarm

Syst Off

Defrost Interlock*

Defrost Lockout*

Light Switch**

* DI 2 only

** DI 3 only

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

black

green

Humidity Sensor

signalground

red

External Digital

Switch

humidier relay

dehumidier relay

heater

+12 VDC

100Ω

.12 A

KE2 Controlled Environment - Diagram (back view)

Table 1 - 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:

(3) temperature sensors (KE2 SKU 20200)

(1) pressure transducer (KE2 SKU 20204)

(1) humidity sensor (KE2 SKU 20651)

Relays: 20A resistive (defrost); 10A inductive (evaporator fan)

(2) 3A inductive rated

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 interlock, defrost

lockout

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

o, external alarm notication, light switch

Valve Type: bipolar stepper motor (12V)

Communication: Standard TCP/IP

Pressure Transducer

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

Humidity Sensor

Sensor Specs: 0% to 100% Relative Humidity

Q.1.23 November 2014

Page 16

KE2 ControlledEnvironment

Quick Start Guide

Controller Navigation - Menu Structure

Parameters:

MANUAL CONTROL

MANUAL VALVE

CLEAR ALARMS

MANUAL COMPRESSOR RELAY

MANUAL DEFROST RELAY

MANUAL FAN RELAY

MANUAL AUX RELAY

FACTORY RESET

WEB PASSWORD RESET

Menus: Variables Manual

(view only)

Non-adjustable

NO ALARM

PRESSURE SENSOR

SUCTION TEMP SENSOR

AIR TEMP SENSOR

COIL TEMP SENSOR

HUMIDITY SENSOR

HIGH SUPERHEAT

LOW SUPERHEAT

HIGH AIR TEMP

LOW AIR TEMP

HIGH HUMIDITY

LOW HUMIDITY

EXCESS DEFROST

DEFR TERM ON TIME

DOOR SWITCH

COMMUNICATION ERROR

EXT ALARM

EMAIL FAILURE

Alarms

(view only)

ENTER

Left Arrow and Right Arrow

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

ROOM TEMP

HUMIDITY TARGET

DEFROST TYPE

VALVE TYPE

MIN SUPERHEAT

MAX SUPERHEAT

MAX OPERATING PRES

MIN OPERATING PRES

REFRIGERANT

MOTOR STEP RATE3

MAX VALVE STEPS3

HUMIDITY CONTROL

AUX TEMP1 MODE

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

DRAIN TIME

COMP RUN TIME

ELEC DEFROST MODE

FAN DELAY TEMP

MAX FAN DELAY TIME

PUMP DOWN TIME

MULTI AIR TEMP CTRL

MULTI EVAP COOL6

MULTI EVAP DEFROST6

MULTI EVAP HEAT6

MULTI EVAP SENSOR6

HIGH TEMP ALARM OFFSET

HIGH TEMP ALARM DELAY

LOW TEMP ALARM OFFSET

LOW TEMP ALARM DELAY

HUMIDITY ALARM OFFSET

HUMIDITY 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

HUMIDITY OFFSET

TEMP UNITS

AIR TEMP DIFF

HUMIDITY DIFF

DEHUMIDIFY OFFSET

EXT DIGITAL SWITCH

HEATER OFF DIFF

HEATER ON DIFF

EXTREME TEMP DIFF

PROPORTIONAL

INTEGRAL

DERIVATIVE

Setpoints

1 T1 Can be set to various functions. The

default for T1 is Suction Temp.

2 The Setpoint parameters shown in BOLD

(Valve Type, Room Temp Setpoint, Defrost

Mode and Target Humidity) 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 controller only.

ROOM TEMP

ROOM HUMIDITY

COIL TEMP

SYSTEM MODE

SUPERHEAT

SUCTION PRESS

T1 SUCT TEMP

SAT TEMP

VALVE % OPEN

COMPRESSOR RELAY

DEFROST RELAY

FAN RELAY

AUX RELAY

EXT DIGITAL SWITCH

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

Variables for DIG IN Mode

DISABLED

2ND (ROOM) TEMP

DOOR SWITCH

EXT ALARM

SYSTEM OFF

LIGHT SWITCH

DEFROST INTERLOCK

DEFROST LOCKOUT

Enter

Password

Q.1.23 November 2014

Page 17

Mounting the Controller

Once the wiring has been run to the controller location, the controller

can be connected. When installing the KE2 Controlled Environment,

the (4) screws supplied in the kit may be preinstalled in the mounting

surface. The controller has keyholes in each mounting tab to allow

the controller to be installed over the screws. The mounting pattern

can be seen in Figure 10.

User Interface

The KE2 Controlled Environment’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 pro-

vide an easy to program 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.

Use ENTER button to save an input option when it has been changed.

Button must be held for 3 seconds to prevent accidental changes.

Changes may be discarded by waiting, to allow the controller to time-

out and return to default screen, or pressing 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 2 (following page).

Controller Setup

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

tialize, then automatically enter the Introduction Mode. The Intro

Mode consists of as little as 4 setpoints that must be congured for

KE2 Controlled Environment to begin controlling the system.

Table 1 shows the Intro Mode. The rst setpoint the user is asked to

enter is the desired ROOM TEMP. This is followed by the TARGET

HUMIDITY, then DEFROST TYPE. The controller is designed 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 KE2 EEV,

but may be used with a mechanical valve or a customer dened valve.

These are the only setpoints required to begin controlling the system,

when applied on a single evaporator with a mechanical valve, See

Table 1.

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.

Table 2 shows the menu structure of the controller. The default dis-

play of the controller always displays the actual room temperature.

Pressing the up and down arrows moves the display through the

VARIABLES menu. See Table 2 By default, 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 Table 2, a complete list of parameters are 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 1 - Introduction Menu

Mechanical Valve TEV

4 steps

KE2 HSV (default)

5 steps

Custom EEV

7 steps

Room Temp Room Temp Room Temp

Target Humidity Target Humidity Target Humidity

Defrost Type Defrost Type Defrost Type

Valve Type Valve Type Valve Type

Refrigerant Refrigerant

Step Rate

Max Steps

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

to specify the REFRIGERANT. Once these have been set, the KE2

Controlled Environment will begin controlling EEV and the system.

Table 3

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.

KE2 ControlledEnvironment

Quick Start Guide

Wine Cellar 2

ke2admin

KE2 ControlledEnvironment

Quick Start Guide

Parameter Name Description Range Default Current

ROOM TEMP Room temperature to be maintained -50°F to 90°F 55°F

HUMIDITY TARGET Room humidity to be maintained 0% to100% 65%

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 AIR

VALVE TYPE Type of valve used on the system: mechanical, KE2 HSV (electric) MECHANICAL, KE2 (ONLY KE2 HSV), CUSTOM KE2 (HSV)

MIN SUPERHEAT The low superheat value that the controller will override pressure control 4 TO 20 5°F

MAX SUPERHEAT The high superheat value that the controller will override pressure control 20 to 60 25°F

MAX OPERATING PRES The maximum allowable suction pressure, (not applicable if VALVE TYPE = MECHANICAL) 10 to 150 150 PSIG

MIN OPERATING SETPOINT The minimum allowable suction pressure

0 to 150 PSIG 0 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

CUSTOM

EEV

ONLY

MOTOR STEP RATE

Step rate for the EEV in steps per second 30 to 400 steps per second 200 steps per second

MAX VALVE STEPS

Number of steps for full stroke of EEV 200 to 6400 steps 1300 steps

HUMIDITY CONTROL Humidity sensor ON, OFF ON

AUX TEMP1 MODE

Conguration mode of the auxiliary temperature sensor if VALVE TYPE = MECHANICAL T1 SUCTION TEMP, MONITOR, TI ROOM TEMP, TI COIL TEMP

T1 SUCTION TEMP

AUX RELAY MODE Conguration mode of the auxiliary relay. ALARM RELAY, 2ND COMP RELAY, 2ND FAN RELAY, 2ND DEF RELAY 2 SPEED FAN CTL,

LIGHTS RELAY, PERM DEF, HUMIDIFIER RELAY ALARM RELAY

FAN SPEED Control variable fan speed by using setpoint as % o and on -100% to 100% 0%

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 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 4

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 The maximum amount of time the defrost relay will be energized for schedule defrosts. 0 to 90 minutes 25 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 PERMANENT

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; 0 if Room Temp Setpoint is > 35°F

PUMP DOWN TIME Minimum amount of time between de-energizing the liquid line solenoid/compressor relay and energizing the defrost relay. 0 to 10 minutes 0 minutes

MULTI AIR TEMP CTRL Set to use average or warmest air temp when multiple air temps are available WARMEST, AVERAGE WARMEST

BONDED

CNTRLRS

ONLY

MULTI EVAP COOL Select whether to sync bonded contollers or let run independently in COOL or OFF modes SYNC, INDEPENDENT SYNC

MULTI EVAP DEFROST Select whether to sync bonded controllers or let run independently in DEFROST or DRAIN modes SYNC, INDEPENDENT SYNC

MULTI EVAP SENSOR Select whether to SHARE or NOT SHARE sensor readings for 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

HUMIDITY ALARM OFFSET

The %RH above or below ROOM HUMIDITY for HIGH HUMIDITY ALARM condition or LOW HUMIDITY ALARM condition

0% to 25% 5%

HUMIDITY ALARM DELAY

Time the %RH must remain above or below ROOM HUMIDITY, HUMIDITY DIFF, HUMIDITY ALARM OFFSET before issuing a HIGH HUMIDITY ALARM OR LOW HUMIDITY ALARM

0 TO 360 minutes 120 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 DISABLED

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

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

DFR LOCKOUT DISABLED

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

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

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

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 -5.0 to 5.0 psig 0.0 psig

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

HUMIDITY OFFSET An oset added or subtracted from the humidity sensor reading -5% to 5% RH 0%

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

HUMIDITY DIFF The number of %RH above or below before the controller will go into DEHUMIDIFICATON or HUMIDIFICATION mode 0% to 25% 5%

DEHUMIDIFY OFFSET An oset from ROOM TEMP to keep cooling if humidity is above setpoint -20°F to 0°F 0°F

EXT DIGITAL SWITCH Provides external output to control: HEATER, HUMIDIFIER, or DEHUMIDIFIER RELAY HEATER SWITCH, DEHUMIDIFY RELAY, HUMIDIFIER RELAY HEATER

HEATER OFF DIFF ROOM TEMP minus HEATER OFF DIFF setpoint turns heaters o -99.9°F to 0°F -99.9°F

HEATER ON DIFF ROOM TEMP minus HEATER ON DIFF setpoint turns heaters on -100°F to -0.1°F -100°F

EXTREME TEMP DIFF ADVANCED TOPIC: Call KE2 Therm for assistance

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

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

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

Q.1.23 November 2014

Page 18

Setpoints Menu

Table 3 - Controller Menus and Menu Parameters