EMI Air Handler (indoor Blower&evap) Manual L0612529

User Manual: EMI EMI Air Handler (indoor blower&evap) Manual EMI Air Handler (indoor blower&evap) Owner's Manual, EMI Air Handler (indoor blower&evap) installation guides

Open the PDF directly: View PDF .
Page Count: 40

Enviromaster International LLC

5780 Success Dr.

Rome, NY 13440

www.enviromaster.com

INSTALLATION,OPERATIONANDMAINTENANCEMANUAL

P/N240006021,Rev.1.2[09/06]

Thismanualisintendedasanaidtoaqualifiedservicepersonnelforproperinstallation,

operation,andmaintenanceofEMIAmericaSerieshighefficiencyevaporators. Carefully

read these instructions before attempting installation or operation. Failure to follow

these instructions may result in improper installation, operation, service, or maintenance,

possibly resulting in fire, electrical shock, property damage, personal injury, or death.

(1) Retain this manual and warranty for future

reference.

(2) Before leaving the premises, review this

manual to be sure the unit has been

installed correctly and run the unit for

one complete cycle to make sure it

functions properly.

To obtain technical service or warranty

assistance during or after the installation

of this unit, check our website @ www.

enviromaster.com or call your installing

contractor or distributor. Our technical

service department may be contacted at

1-800-228-9364.

When calling for assistance, please have

the following information ready:

• Model Number

• Serial Number

• Date of installation

DANGER

'_' Read all instructions before using the

EMI AmericaSeries high efficiency

evaporator. Install or locate this

unit only in accordance with these

instructions. Use this unit only for

its intended use as described in

this manual.

Check the rating plate on the EMI

AmericaSeries evaporator before

installation to make certain the

voltage shown is the same as the

electric supply to the unit.

The EMI AmericaSeries evaporator

must be connected only to a properly

grounded electrical supply. Do not

fail to properly ground this unit.

Turn off the electrical supply before

servicing the EMI AmericaSeries

evaporator.

Do not use the EMI AmericaSeries

evaporator if it has damaged wiring,

is not working properly, or has been

damaged or dropped.

[Save These Instructions]

The AmericaSeries WLC/WLH is avail-

able as a (Dx) direct expansion straight cool

and heat pump. It offers a contemporary

design in a ductless type evaporator and

combines attractive appearance with high

efficiency conditioning for small to medium

size commercial or residential spaces. The

WLC/WLH is equipped with unit mounted

infrared compatible controls which also sup-

ports 24V remote wall thermostat operation.

Optional hand held remote is available.

Heat Pump models provide up to

23,000 Btuh of cooling and 20,600 Btuh of

heating. Electric heat options are available

for up to 5KW of supplemental heat.

This American-made evaporator offers

ease of installation, operation, and service.

It can be matched with EMl's $1C/81H

09-24 and S1C 30-36 Btuh Single-Zone

Condensing Units, the $2C side discharge

Dual-Zone Condensing Unit, or the T2C,

T3C, and T4C top discharge Multi-Zone

Condensing Units.

All EMI Air Handlers are backed by

Enviromaster International LLC and are

tested and rated in accordance with ARI

standards 210/240 and UL 1995.

ote: If the control is configured for_

nit mount control do NOT connect I

wall thermostat to the unit. .J

•Large LCD Backlit Display

•Single unit mounted control pack-

age, configurable to either unit mount

or remote wall thermostat operation,

reducing model number or 8KU's

required.

•Universal control can be used in

cooling only, cooling with electric heat,

heat pump, or heat pump with second

stage electric heat applications.

•Operational range set point tem-

perature adjustable between 55°F and

90°F in one-degree increments.

•Infra red compatible control allows

use of optional IR hand held controller.

!uOte: Unit mounted controls are_

Ily functional without the handheld|

emote. J

•Operation modes include Heat, Cool,

Dry, Fan and Auto Change-over.

•Fan Operation-AutolOn. High or Low

speed fan

•Fan Purge - Fan remains on for

60 seconds after Heat/Cool call is

dropped for improved efficiency (Auto

mode only)

•Room air sampling: Selectable time

intervals ensure the fan will cycle

on periodically, in Auto Fan Mode

to help eliminate room temperature

stratification.

•Selectable Fahrenheit (°F) or Cesius

(°C) temperature scale.

•Dry mode - Operates cooling and

electric heat simultaneously to remove

humidity. Optional electric heat must

be selected.

•Anti-Short Cycle Compressor Pro-

tection.

•Minimum on time for heating and

cooling Helps eliminate room temper-

ature drop and system short cycling.

•Freeze Protection - Prevents evapo-

rator freeze up.

•Test operation - Allows ease of test-

ing after installation (all timers are

eliminated).

•Non-volatile back-up memory will

maintain control settings for an indefinite

period during a power outage. When

power is restored the equipment will

resume operation after a three-minute

compressor time delay.

• 7-day programmable with copy feature.

•Filter change indicator: A timer fea-

ture indicates when the filter should be

changed according to the selected time.

•Motorized supply Iouverwith optional

sweep or six stationary settings.

•Modular design - reduces parts

required for control package. Deco

panel, relay board, ribbon cables and

microprocessor are combined into one

package.

•Integral condensate pump safety-

switch connection where-by the mi-

croprocessor monitors the condensate

pump safety switch and displays an

error code when a fault occurs. (Applies

only with optional condensate pump)

•CEC (California Energy Commission)

compliant

• Condensate drain pan over flow

protection

A_ Cabinet Features:

• Durable ABS plastic cabinet with a

galvanized steel sub-chassis.

• Easily accessible, washable, reusable,

nylon mesh filter.

• Horizontal discharge louver, construct-

ed of high temperature ABS plastic,

that can be set to oscillate, or can be

parked in six pre-set positions.

• Manually adjustable vertical discharge fins.

• Easy access to pipe chase area from

cabinet bottom allows piping connec-

tions and condensate pump installation

with the unit mounted on the wall.

• Easily removable end-cap for access

to control area for installation and

service.

• Condensate drain pan constructed of

galvanized steel (Gg0U), with anti-cor-

rosion coating.

• Modular snap-in, 7-day programmable

control with large backlit LCD display,

a "Change filter" display feature and

selectable Fahrenheit (F°), or Celsius

(C °) temperature scale.

NOTE: Unit mounted controls are fully fun_-_

OTE: If the control is configured for unit_

ount control do NOT connect a wall ther- )

£statto theun!t_ _/

• Condensate pump (field installed only)

• 24V remote wall thermostat

• Electric heat with automatic reset high

temperature cutout and redundant

high temperature fuse link (when heat

option is selected)

• Hand held infrared controller.

•Low voltage wiring (18 awg required)

• High voltage power supply wiring

• Mounting screws and fasteners

• Condensate piping

• Refrigerant piping (if not supplied)

•Refrigerant (for interconnect charge)

O" ® I " _ •

• ._ Determine the best location for mount-

ing the unit for room air circulation.

_ Locate outdoor and indoor units as

close together as possible.

,t_" Determine how power wire (high and

low voltage) condensate drainage,

and refrigerant piping may be run to

and from the unit.

,_ WLC/WLH - Ensure that intercon-

nect tubing is within the maximum

allowable length of 100' including a

maximum 35' lift.

,_'¢ To ensure serviceability and proper

air distribution, the unit should be

positioned as close as possible to the

center (left-to-right) of the wall. Minimum

distance from the ceiling is stated on the

template provided with the unit packag-

ing. The cabinet left and right end caps

must be accessible for removal without

obstruction. (See below)

CEILING

4" Minimum

Minimum

]

The WLC/WLH must be mounted

plumb and level to a vertical surface to

prevent unit vibration and/or unwanted

noise. It is recommended that the unit

be mounted directly to a smooth surface

such as Sheetrock ® wallboard or similar

material. If mounting to a masonry block

wall, there should be a smooth barrier

between the unit and the masonry block

surface to absorb any potential vibration

and prevent the formation of condensation

on the wall.

"NOTE: If excessive noise or vibration is ex-_

perienced from a unit mounted toa masonry I

block wall, check to ensure the unit is plumb I

and level. If noise or vibration persists, con- I

_act the Wholesale Distributor. ,._

1. After determining the best location for 5. Secure the bracket to the wall with the

the unit, use the cardboard template appropriate screws (for wood) or an-

provided in the packaging, chors (for masonry). Ensure the bracket

is mounted in a manner that will support

the weight of the unit.

NoOte: The wall hanging bracket slot is NOT_

cared in the center of the unit. J

2. Mark where the piping, electrical wiring

and condensate drain should penetrate

the wall.

3. Determine the appropriate hole size and

cut through the wall. slot

4. Use the supplied wall bracket. For

shipping purposes, the wall bracket is

fastened to the back of the unit.

6. To mount the unit to the bracket, align

the mounting slot on the back of the

unit over the bracket and make certain

it fits properly.

(_NOTE: Piping may be roughed in before'_

wallboard or panels are placed in new I

construction. PVC pipe (3 or 4 LD.) I

_, may be used as a pipe chase. J

_NOTE: Panels should remain on the unit_

at all times, while powered and in opera-

tion. Service should be performed by a

QUALIFIED service agency. An annual

system check by aqualified service tech-

_nician is recommended.

these screws

All wiring should be in accordance with the

National Electric Code (NEC) and the local

building codes.

1. Make sure power is off.

2. Check the unit rating plate for circuit am-

pacity and breaker or time delay fuse size.

Use only HACR type breakers. Select

the proper wire for the ampacity rating.

3. Each unit must have a separate branch

circuit protected by a time delay fuse or

breaker. Refer to the unit rating plate

for the proper wire and breaker or time

delay fuse size.

4. Inspect the existing wiring for any defects

such as cut or frayed wires. Replace if

any such wiring if found.

fNOTE: On units rated 208/230V, the

primary side of the transformer is

factory wired for 230V. For a 208V

power supply, the transformer tap

must be changed from orange to

red. Refer to the wiring diagram

located on the inside of the left

k_. end cap of the unit. .J

2. Lift and remove the front grill to expose

the third screw.

unit

1. The left end cap of the unit needs to be

removed to access wiring diagram and

electrical wiring. This entails removal of

three screws.

3. Once the screws are removed,

slide the left end cap

off to expose control

box and locate the

wiring diagram on

the inside of the

end cap.

Control box Remove screw

4. To access High and Low wiring remove

the screw on the front of the control box.

5. Refer to the wiring diagram to connect

the power wire to Black L1 and the other

wire to Red or White (115V) L2 at the

power connector location.

6. Connect the ground wire to the ground

lug or lead at the same location in the

control box.

The 24V control transformer is located

in the evaporator. This provides low Volt

control power to both the evaporator and

condenser. Depending on the models se-

lected, the low Volt interconnect control

wiring may be effected.

Note: All low Volt interconnect *_

rWiHng must be at least 18 awg. J

Voltage

Connections

Cooling only units utilize two low Volt

interconnecting wires between the indoor

and outdoor units.

* Wires designated "Y" (yellow) and "C"

(brown) of the air handler should be con-

nected to the corresponding "Y" (yellow)

and "C" (brown) wires or terminals of the

condenser. (See Figure 1A)

* Other wires or terminals such as "R" (red)

or "O" (orange) may not be needed and

should be protected by a wire nut from

making contact with the junction box or

other metal surfaces.

Heat Pump Connection: in addition to the

"Y" and "C" connections required for cool-

ing, heat pumps require a reversing valve

control wire "0" (orange) that is energized

in the cooling mode.

If the indoor unit has an electric heater, then

a "W" (white) wire connection will also be

needed to energize the indoor electric heat.

If a remote thermostat is used.

Heat pumps models require an "R" connec-

tion between the indoor and outdoor unit to

provide power to the defrost control board

in the condenser. (See Figure 1B)

Unit mount control oonfiguration

Straight Cool Appitcation

__*®1................I'__ _°_i

_ J

Low Volt interconnect diagram intercon-

nect diagram FiL_ure IA and Figure IB

for unit mounted controls.

Unit mount control configuration

Heat Pump App#eadon

_le_et¢ heat @p#@t_

_., .J

When connecting to a defrosting heat

pump, such as EMI model S1H, indoor

units with electric heat utilize five intercon-

necting low Voltwires between the indoor

and outdoor units.

The 24V control transformer is

located in the air handler unit. This

provides low Volt control power to

both the air handler and condenser.

Depending on the models selected,

the interconnect control wiring may

be effected.

_NOTE: All low Volt interconnect_

wiring must be at least 18 awg. J

fNoTE: For remote thermostat mode_

the key pad will have limited opera- I

tion -Sequence of Operation -Wall I

_.Mounted Thermostat, page 21. .t)

Choosing a Remote Wall Mounted

Thermostat: See "Wall Thermostat

Control" section page 21.

Remote wall mounted thermostat configuration

Straifht Cool Appfeattoo

...... q........F{;o=°-

Se_ thermostats de net t_e

_C* termlnat J

Low Volt interconnect diagram interconnect diagram Fiqures 2A. 2B & 2C for remote wall thermostat control.

Depending on the thermostat re-

quired or selected, air handlers may

utilize four to six low Volt intercon-

necting wires between the indoor

unit, thermostat and outdoor unit.

Some thermostats do not require

the use of the "C" (brown) connec-

tion. In this case, ensure that any

unused wires are insulated with a

wire nut to prevent them from mak-

ing contact with the junction box or

other metal surfaces.

If the indoor unit has electric heat

then a "W" connection is required be-

tween the thermostat and indoor unit.

NOTE: If the control is con- _

figured for unit mount con- I

trot do NOT connect awa!l I

thermostat to the unit. J

Refer to low Volt interconnect

diagram interconnect diagram

Fiures 2A 2B & 2C for remote

wall thermostat controls.

• Some thermostats do not require

the use of the "C" (brown) con-

nection.

• Heat pump operation requires

the connection of the "0" (or-

ange) terminal from the outdoor

unit to the thermostat.

The reversing valve is energized

in the cooling mode for EMI models

S1H heat pump condensers.

Ensure that any unused wires are

insulated with a wire nut to prevent

contact with the junction box or other

metal surfaces.

Once certin all electrical con=

netions are made replace control

box cover,

Replace screw

Remote wait meunt_ thermostat configuration

Cooling/Electric Heat Application

_C__rrI_nat

Remote waft meonted thermostat oonfig#ratien

Heat Pomp Appfioa#en

_<'_°°=®-i ........i---__;:__®--i----*---{-"® <"_=

_*_=__ ...................... @ ............... @

........ J I

a _" tertctlia_

SINGLE-ZONE HEAT PUMPS ONLY Two-

stage heating requires the combination of

a heat pump condenser and an indoor unit

that is equipped with an electric strip heater.

The indoor electric heater will energize as

the second stage heat source (the tem-

perature is dependent on the thermostat

selected) and also during the defrost mode

for models S 1H.

- - _® • _ Be The WLC/WLH is equipped with a

Fie-Rater/Piston Expansion device. Con-

, Avoid piping on a rainy day. nections are sweat type.

• Use refrigerant grade copper tubing.

• Use a tubing bender and avoid unnec-

essary bending.

• Cap ends of lines until ready for final

connections.

Once the unit is mounted and level

the WLC/WLH piping connections can be

made by removing the left end cap and

bottom panel:

Note: The left end cap must_

be removed prior to remov- I

ing the bottom. Follow the I

instructions on page 6 for I

removing the end cap. .]j,

The suction line (large) must be insulated

the entire length with closed cell, foam tube

insulation. Do not insulate the liquid line

(small). Connect the outdoor unit according

to the instructions supplied with unit.

All horizontal piping runs must be level and

without dips to trap the oil.

2. Exposed piping and condensate drain

connections. (See table on page 36 for

connection size per unit capacity.)

1. Remove the Philips-

head screws on bot-

tom of unit and lift

bottom panel off. Liquid line Suction line -_

Condensate drain

When matching a the WLH24 with an 18,000

Btuh condenser circuit, the interconnecting

suction line needs to be 5/8" O.D. to match

the condenser service valve connection.

Therefore the 3/4" O.D. suction connection

of the WLH24 unit needs to be reduced to

5/8" at the WLH24 unit connection.

Anychangeinthediameterofthetubing

must be made at the indoor connection.

Line-set diameter is determined by the

condenser service valve size.

Use ofa larqer diameter liquid or suc-

tion line can harm the compressor!

Reducing bushing goes here for "_

18,000 Btuh system match

Important: Replace the existing piston (before instafling the unit) with the piston

supplied in Kit Bag when any:

•WLHA24 evaporator is matched with a S1CAS_000 or $1 HA8000 condenser which has

an 18,000 Btuh compressor ("8"in the capacity decoding field). The piston will need

relacement only on the 18,000 Btuh zone.*

Your EMI evaporator unit contains the appropriate piston for your model. Refer to this

document to determine if a change is required based on your condenser rating. If your

match is not fisted below no piston change is required. (See chart below)

*"8" in the capacity decoding field = 18,000 Btuh

WARNING! 4.Brazetubingintofittings.

5.Attachmanifoldset.

ManifoldVacuumPumpMicron Gage

Finish a!l _ eonnectinq before

roceedin to char in the s stem.

Follow the instructions in the outdoor

unit for line evacuation, opening service

valves, and final charge adjustments. Op-

eration charts and charge tables can be

found in the EMi Condenser IOMs.

1. Clean the ends of tubing and insert into

fittings.

6. Evacuate line to 500 microns or less to

ensure all moisture has been removed

and there are no leaks.

2. Protect the valves by wrapping with a

wet rag "heat sink" before brazing.

Heat sink Shield

7. Once certain of a good evacuation and

leak free joints, back-seat the valves

(counter-clockwise) to open and allow fac-

tory charge to fill lines and indoor unit.

(_Refer to Charts in condenser manual t_

3. We recommend the use of a shield (can L"fine tune" the refrigerant charge.

be made from some scrap metal) to --"

protect the paint.

8. Chargeto properweight,charge

basedon yourfeetof interconnect

(seebelow).

IMPORTANT NOTES:

I. To find the charge adjustment and system charge for any evaporator and tubing length:

Line Adjustment =(Line Chg/Ft) x Line Length

System Total =Factory Charge + Line Adjustment

2. Round to the nearest ounce and allow for gauges and hoses.

3. Use R22 refrigerant.

09 25 oz. 28 oz

12 25 oz. 30 oz

18 56 oz. 48 oz

24 56 oz. 60 oz

S1CA9 WLHA09 25 oz. 37 oz.

S1CA2 WLHA12 25 oz. 40 oz.

S1CA8 WLHA24 56 oz. 51 oz.

S1CA4 WLHA24 56 oz. 65 oz.

S1CA3 WLCA30 56 oz. 72 oz.

S1CA6 WLCA36 56 oz. 90 oz.

S1HA9 WLHA09 25 oz 41 oz.

$1 HA2 WLHA12 25 oz 44 oz.

$1 HA8 WLHA24 56 oz 53 oz.

$1 HA4 WLHA24 56 oz 67 oz.

S2CA99 WLHA09 .25 oz. 28 oz./28 oz.

$2CA22 WLHA12 .25 oz. 33 oz./33 oz.

S2CA92 WLHA09+WLHA12 .25 oz. 28 oz./33 oz.

When satisfied that the system is leak free reinstall the bottom and left end cap in the precise

order shown below:

1. Replace the bottom panal.

5. Once end cap is

properly seated

tighten the screw

as shown above.

6. Thighten bottom

end cap screw.

3. Next replace and

tighten the re-

maining screws

across the bot-

tom panel.

4. Replace left

left end cap.

7. Replace the grille,

ensure it's seated

properly on the

unit.

8. Tighten the top

scew on the left

end cap.

"MODE"button=selectmodeofoperation,Cool,

Heat,Autochangeover(ACO),DryorFanmode.

"UP"arrowbutton=increaseset

pointtemp.,also=incrementset-

tingsinConfig.,TimeSet+Prog.

modes.

"ON/OFF"buttonpressonce=

unitonoroff.

"DOWN"arrowbutton=

setpointtemp.also= decrement

settingsinConfig.,TimeSet+Prog.

modes.

"TIMER"button= enterorexit

SleepTimermode.

"TIME"button=enterorexitSet

Timemode.

"PROG"button= enterorexit

Pre-prog.Runmode.

"FAN"button=selectfanspeed,

High,LoworAuto.

"FAN/LOUVER"

buttonpress&holdfor3seconds="LOU"onLCD,thenUP&DOWNARROW=positions

"FILTERCHECK" Is flashing: press "MODE"

+ "FAN" buttons simultaneously for 3 sec. =

clear warning.

"QUICK COPY" = 7-Day Prog. mode, press

"FAN" + "PROG" buttons simultaneously for 3

sec. to copy selected day to rest of week.

TEST MODE: In Oft mode, press "ON/OFF' +

"PROG *'+ "TIME" buttons simultaneously for 3

sec. = Test mode. Press "ON/OFF" + "PROG"

+ "TIME *' buttons simultaneously again = exit

Test mode.

7-DAY PROGRAM: In Off or Run mode, press

"PROG" + "TIME" buttons simultaneously for

3 sec. = 7-Day Prog. mode. Press "PROG" +

"TIME" buttons again or if left idle for 20 sec. =

exit 7-Day prog. mode.

CONFIGURATION MODE: in Off mode, press

"MODE" + "PROG" buttons simultaneously

for 10 sec. = Config. mode. Press "MODE" +

"PROG" buttons again or if left idle for 20 sec. =

exit Config. mode.

Pressing the "ON/OFF" The "MODE" button allows

button once will switch the unit either on the selection of the mode of operation,

or off. Cool, Heat, Auto changeover (ACO), Dry

or Fan mode.

The"FAN"buttonwillselect

thefanspeed,High,LoworAuto.High

andlowareconstantfanspeedsettings

andcanbeselectedinallmodesexcept

Drymode.InDrymode,thefanwillop-

erateconstantlyat lowspeed.Autofan

modeis notavailableinFan(only),Dry

andRemotewallthermostatmodes.

vermode.Toenterthelouvermodepress

andholdtheFan/Louverbuttonforthree

seconds.Whilein louversetmodethe

word"Lou"willdisplayontheLCD.

The"PROG"buttonisused

to enteror exitthe Pre-programRun

mode.ThePre-programRunmodecan

beenteredwhilethecontrolisin"Cool",

"Heat"or"Auto"modes.Pre-programRun

modecannotbeenteredwhileinDry,

FanorOffmodes.Whilethecontrolisin

Pre-program Run mode the word "PRO-

GRAM" will be displayed on the LCD.

The "TIME" button is used

to enter or exit the Set Time mode. The Set

Time mode can be entered while the con-

trol is in any mode including Off mode. To

enter the Set Time mode, press and hold

the "TIME" button in for three seconds. To

exit press the "TIME" button momentarily.

The "TIMER" button is used

to enter or exit the Sleep Timer mode.

When the "FILTER CHECK" indicator

warning is flashing on the LCD, pressing the

"MODE" and "FAN" buttons simultaneously

for three seconds will clear the warning.

While in 7-day programming mode, press-

ing the "FAN" and "PROG" buttons simul-

taneously for three seconds will copy the

selected day to the rest of the week.

When the unit is either in the Off or Run

mode, pressing the "PROG" and "TIME"

buttons simultaneously for three seconds

will enter the 7-Day Programming mode.

Pressing the "PROG" and "TIME" buttons

again or if left idle for 20 seconds, will exit

the 7-Day program mode.

The "UP" arrow button is used to increase

the set point temperature. Also, the "UP"

arrow button is used to increment settings

in the Configuration, Time Set, Program

and Louver Set modes.

When the unit is in the Off mode, pressing

the "MODE" and "PROG" buttons simulta-

neously for 10 seconds will enter the Con-

figuration mode. Pressing the "MODE" and

"PROG" buttons again or if left idle for 20

seconds, will exit the Configuration mode.

The "DOWN" arrow button is used to de-

crease the set point temperature. Also,

the "DOWN" arrow button is used to dec-

rement settings in the Configuration, Time

Set, Program and Louver Set modes.

The Fan/Louver button is

used to enter the louver mode. The louver

mode allows selection of six different fixed

louver positions or auto (oscillation) Iou-

When the unit is in the Off mode, pressing

the "ON/OFF", "PROG" and "TIME" but-

tons simultaneously for three seconds will

enter Test mode. Pressing the "ON/OFF",

"PROG" and "TIME" buttons simultaneously

again will exit Test mode

fCAUTION:

Do not cycle the unit on and_'_

off repeatedly while in Test mode as this I

will cause damage to the compressor. Do I

not leave the unit in Test mode. ]

For unit mounted key pad operation

the control must be configured through

the Configuration mode. Be sure to select

Remote - OFF in the configuration menu.

(See Configuration mode)

ote: When power is first applied to the_

ontrol or after a power outage there is I

three minute delay before the corn- I

ressor or electric heat will energize. I

is is to protect the unit from short cy- I

ng due to loss of power. ,j

Pressing the "ON/OFF" button once

will switch the unit either on or off. In the

Off mode, the LCD will display the time of

day and day of the week. In the On mode

the LCD display will also display the room

temperature and the mode of operation

Cool, Heat, Auto (Auto changeover), Dry

or Fan mode. While in the On mode, the

set point temperature will display momen-

tarily with the push of any button except

the ON/OFF button.

The FAN button will allow the selection of

the desired fan setting in all modes except

Dry mode. In Dry mode, the fan will oper-

ate constantly at low speed. The LCD will

indicate fan speed selection.

High and Low are constant fan settings.

The fan will operate continuous regardless

of set point or room temperatures. Auto

mode is for cycling fan operation.

Auto Fan mode can only be selected if

the unit is in Heat, Cool or Auto Change-

over modes. In Auto Fan mode the fan

will cycle with the call for Heat or Cool.

Fan speed will be determined by the mi-

croprocessor and speed adjustment will

be made according to room and setpoint

temperatures. The fan will switch to High

speed when room temperature deviates by

more than two degrees from setpoint. The

fan will switch to Low speed if the devia-

tion is one degree or less. When the room

temperature reaches setpoint temperature

the heat/cool call will then be dropped. The

fan will stay on for an additional 60 sec. to

purge unit of any residual energy.

If the Room Air Sampling feature has

been enabled in the Configuration mode

(see Configuration mode), after the fan

has been off for the selected time, it will

then cycle on for 60 seconds. The unit will

circulate room air to remove any temper-

ature stratification by the unit so the mi-

croprocessor can determine an accurate

room temperature. After the 60 second

room air sample time has elapsed, and

if the setpoint temperature remains satis-

fied, the fan will cycle off.

When the unit is in Dry mode the fan

speed will remain constant at Low speed.

While the unit is in Fan mode, Auto is by-

passed and only High or Low are available.

The "MODE" button allows the se-

lection of the mode of operation, Cool,

Heat, Auto changeover (ACO). Dry or

Fan mode. In Fan mode either "HIGH" or

"LOW" will be displayed on the LCD.

The indoor unit utilizes a two-speed

motor with three operational fan modes.

When the control is in the Off mode the

louver will remain in the closed position.

When the unit is turned on via the ON/OFF

button the louver will open and operate ac-

cording to the setting selected in the Lou-

ver Configuration mode.

To enter the Louver Configuration

mode, press and hold the Fan/Louver

button in for three seconds. This will enter

the Louver Configuration mode and "Lou"

will display on the LCD. Pressing the Up

orDownarrowbuttonswillallowselection

of sixdifferentfixedlouverpositionsor

auto(oscillation)mode.Thesequenceis

01,02,03,04,05,06andAuto.Oncethe

desiredsettingisselected,presstheFan/

Louverbuttonmomentarilyorletidlefor

10secondstoexitthelouversetmode.

Whilethecontrolis intheOnmode,

thelouverwill remainin theselected

louverposition.IfAutolouveroperation

isselected,thelouverwilloscillateonly

whenthefanisrunning.Whenthecontrol

isturnedoffviatheON/OFFbuttonthe

louverwillreturntotheclosedposition.

Forcoolingoperationfirstturntheunit

onviatheON/OFFbutton.SelectCool

modeviatheMODEbutton.Theroom

temperatureandsetpointtemperature

willbedisplayed.Thesetpointtempera-

turecanbechangedwitheachsucces-

sivepressoftheUporDownarrowbut-

tonsorbyholdingthebuttonin.

Placethesetpointtemperaturebelow

theroomtemperature.Thecompressor

willstartandcoolingwillcontinuefora

minimumoftwominutesandaslongas

thesetpointremainsbelowroomtemper-

ature.Oncetheroomtemperatureissat-

isfiedforatleast60secondsandthetwo-

minuteminimumruntimehaselapsed

thecompressorwillcycleoff.Thefanwill

operateasdescribedin"FanOperation".

OTE:Once the compressor is_'_

witched off, or after a power outage |

here is a three-minute delay before |

he compressor will re-start. J

_,_ Optional Electric Heat Operation

(Non Heat pump condenser units only):

For operation with electric heat the

control must first be configured properly

(Heat source - "ON", Heat pump -"OFF").

See: Configuration Interface mode.

For electric heat operation, first turn the

unit on via the ON/OFF button. Then se-

lect Heat mode via the MODE button. The

room temperature and setpoint tempera-

ture will be displayed. Press either the

Up or Down arrow buttons to change the

setpoint temperature. The setpoint tem-

perature will change by one degree with

each successive press of the Up or Down

arrow buttons. Holding the button in will

change the temperature rapidly.

Place the setpoint temperature above

room temperature. The electric heat will

energize and heating will continue as

long as the setpoint remains above room

temperature. When the room temperature

has been satisfied for at least 60 seconds

and the two minute minimum on time has

expired, the electric heat will switch off.

The fan will operate as described in "Fan

Operation".

_'_ Optional Heat Pump With Electric

Heat (2-stage heating):

For heat pump operation with electric

heat the control must first be configured

properly (Heat source - "ON", Heat pump -

"ON"). See: Configuration Interface mode.

For heat pump operation with backup

electric heat, first turn the unit on via the

ON/OFF button. Then select Heat mode

via the Mode button.

The room temperature and setpoint

temperature will be displayed. Press either

the Up or Down arrow buttons to change

the setpoint temperature. The setpoint

temperature will change by one degree

with each successive press of the Up or

Down arrow buttons. Holding the button in

will change the temperature rapidly.

Place the setpoint temperature above

the room temperature by one degree. The

compressor will start and heating will con-

tinue for a minimum of two minutes and as

long as the setpoint remains above room

temperature. When the room temperature

has been satisfied for at least 60 seconds

and the minimum on time has elapsed,

the compressor will switch off. The fan will

operate as described in "Fan Operation".

Next, place the setpoint temperature

above the room temperature by at least

two degrees. The compressor will start

and, the electric will also energize after a

30 second delay, thus two-stage heating.

The electric heat will run for a minimum

of two minutes and until the deviation

betweenroomtemperatureandsetpoint

temperatureislessthantwodegrees.At

thattimetheelectricheatwillswitchoff

andtheheatpump(compressor)willtake

overtheheatingdemand.Theelectric

heaterwillnotre-startuntilathreeminute

delayhaselapsed.Oncetheroomtem-

peratureissatisfiedandthetwo-minute

minimumruntimehaselapsed,thecom-

pressorwillcycleoff.Thecompressorwill

notre-startuntilathreeminutedelayhas

elapsed.Thefanwilloperateasdescribed

in"FanOperation".

peraturebytwodegrees,heatingwillstop

andcoolingwillcontinuetobringtheroom

temperaturebackdowntosetpointtemper-

ature.Thefanwilloperatecontinuouslyat

lowspeedwhileinDryMode.

Inordertopreventshortcyclingthere

isatwominuteminimumontimeforboth

coolingandheating.Theminimumofftime

is3minutes.Alsothereisa30secondde-

laybetweenthestartof thecompressor

andthestartoftheheatsource.

ForDryModeoperationtheunitmust

haveanelectricheater.Alsothecontrol

mustfirstbeconfiguredproperly(Heat

source-"ON").See:ConfigurationInter-

facemode.

Drymodewillremovehumidityfrom

theairwhilemaintainingaspecificsetpoint

temperature.Thisisdonebyenergizingthe

compressorincoolingalongwiththeelectric

heater.Drymodewillnotmaintainaspecific

humiditylevel.Theunitmustbeequipped

withanoptionalelectricheatelement.

ForDryModeoperation,firstturnthe

unitonviatheON/OFFbutton.SelectDry

modeviatheMODEbutton.Theroom

temperatureandsetpointtemperaturewill

bedisplayed.PresseithertheUporDown

arrowbuttonstochangethesetpointtem-

perature.Thesetpointtemperaturewill

changebyonedegreewitheachsucces-

sivepressoftheUporDownarrowbut-

tons.Holdingthebuttoninwillchangethe

temperaturerapidly.

Placethesetpointtemperatureat a

desiredroomtemperature.Dependingon

thedifferencebetweenroomtemperature

andsetpointtemperaturethecompressor

and/orheatsourcewillenergize.If the

roomtemperatureandsetpointtempera-

turearethesamethecompressorwillop-

erateincoolingandtheelectricheatwill

alsoenergize.

Shouldtheroomtemperaturefallbe-

lowthesetpointtemperaturebytwode-

grees,thecompressorwillstopandheating

willcontinuetoboosttheroomtemperature

backuptosetpointtemperature.Iftheroom

temperaturerisesabovethesetpointtern-

ForAutoChangeoverMode(ACO)

theunitmusthaveaheatsource.Alsothe

controlmustfirstbeconfiguredproperly

(Heatsource- "ON").See:Configuration

Interfacemode.

AutoChangeovermodewilloperate

eitherCoolingmodeor Heatingmode.

Thecontrolwillselectthemodeofopera-

tiondependingonthesetpointtempera-

ture,roomtemperatureandthedifferen-

tialsettingselectedintheConfiguration

mode(SeeConfigurationmode).

ForAutoChangeovermode,firstturn

theunitonviatheON/OFFbutton.Select

AutomodeviatheModebutton.Theroom

temperatureandsetpointtemperaturewill

bedisplayed.PresseithertheUporDown

arrowbuttonstochangethesetpointtem-

perature.Thesetpointtemperaturewill

changebyonedegreewitheachsucces-

sivepressoftheUporDownarrowbut-

tons.Holdingthebuttoninwillchangethe

temperaturerapidly.

Placethesetpointtemperaturebe-

lowtheroomtemperaturebythedead

bandamountselectedintheconfigura-

tionmode.Thecompressorwillstartand

theunitwillruncoolingoperationasde-

scribedunder"CoolMode".

Ifthesetpointtemperatureisabove

theroomtemperaturebythedeadband

amountselectedin the configuration

mode,theunitwillrunheatingoperation

asdescribedunder"HeatMode"

The"TIME"buttonis usedto enter

orexittheSetTimemode.TheSetTime

modecanbeenteredwhilethecontrolisin

anymodeincludingtheOffmode.Toen-

tertheSetTimemode,pressthe"TIME"

buttonin for threeseconds.Pressing

the"PROG"(NEXT)buttonwilladvance

tothenextitem.Theorderis(1)Dayof

week,(2)Hourand(3)Minute.Pressing

the"MODE"(BACK)buttonwillreturnto

thepreviousitem.Thetimeof dayand

dayofweekcanbechangedusingtheup

ordownarrowbuttons.

Whenthe"TIME"buttonis pressed

againorleftidlefor20seconds,thecon-

trolshallsavethenewsettingsandreturn

tothepreviousmode.

The7-dayprogrammingmodeisused

tostorethesettingsforthePre-program

Runmode.

WhentheunitisineithertheOfforRun

mode,the7-DayProgrammingmodecan

beenteredbypressingthe"PROG"and

"TIME"buttonssimultaneouslyforthree

seconds.Whenthe"PROG"and"TIME"

buttonsarepressedsimultaneouslyagain

orleftidlefor20seconds,thecontrolshall

savethenewsettingsandreturntothe

previousinterfacemode.

Whileinthe7-Dayprogrammingmode,

usetheupordownarrowstochangethe

time,temperatureorperiodsettings.Use

the"MODE"(BACK)or"PROG"(NEXT)

buttonstoselectthemodetobechanged.

Settingsfor(1)Dayofweek,(2)Pe-

riodofday,(3)Hour,(4),Minute,(5)Cool

setpointtemperature,(6) Heatsetpoint

temperatureand(7)Autosetpointtem-

peraturecanbeentered.

Quickcopyisa featureofthe7-day

programmingmode.Itisusedtocopythe

settingsofanydaytotherestoftheweek.

Whilein7-dayprogramming,selectthe

dayto becopied.Then,pressthe"FAN"

and"PROG"buttonssimultaneouslyfor

threeseconds.Theselecteddaywillbe

copiedtotherestoftheweek.

Thisisnormaloperating(nonpre-pro-

gramrun)mode.Settingsfortemperature,

modeandfanspeedareselectedbythe

userandwillnotchangewiththepassing

oftime.Theword"PROGRAM"doesNOT

displayontheLCD.

Thisfeatureallowsthesetpointtem-

peraturetobechangedaccordingtothe

pre-programmedsetpointandtimeofday

settings.Thesetpointandtimesettings

areprogrammedintothecontrolthrough

the7-dayprogramminginterface.

ThePre-programmedRunmodecan

beenteredfromCool,HeatorAutomodes

only.Pre-programmedrun modecan-

notbeenteredfromDryorFanmodes.

Pressingthe"PROG"buttonmomentari-

lywillenterorexitthePre-programrun

mode.Theword"PROGRAM"willappear

intheLCDdisplay.Then,withthepass-

ingoftime,thesetpointwillchangetothe

programmedsettingatthetimeselected.

Toaidinfiltermaintenance,themicro-

processorwillkeeptrackoftheunitsrun

time.Then,afterthefilterchecktimehas

elapsed,a"FILTERCHECK"warningwill

appeartheLCDdisplay.Thefiltercheck

timeisselectablethroughtheconfigura-

tionmode.Availablesettingsare250,

500,750,1000,and1250hours.Alsoif

fourevaporatorfreezeupsoccurwithina

24hourperiod,(SeefaultconditionE03)

thefiltercheckindicatorwillappear.

Afterfiltermaintenancehasbeenper-

formed,pressthe"MODE"and"FAN"but-

tonssimultaneouslyforthreesecondsto

clearthefiltercheckwarning.

Intheauto(cycling)fanmodeRoom

AirSamplingwillautomaticallycyclethe

fanonforaminimumof60seconds,with

thecontrolinthesatisfiedstate,toperi-

odicallycirculateroomair.Roomairstrati-

ficationisthereforeminimizedduetothe

fanbeingoffforlongperiodsof timeso

thatthemicroprocessormayaccurately

trackroomtemperature.

Roomairsamplingmustbeselected

throughtheconfigurationmode.Select-

ablesamplingtimesare:"OFF"(disabled),

5min,10min,and15min.

Whiletheunitis in the Offmode,

pressingthe"MODE"and"PROG"but-

tonssimultaneouslyfor 10secondswill

entertheConfigurationmode.Whilein

Configurationmode,pressingtheMODE"

and "PROG"buttonssimultaneously

againorleftidlefor20seconds,willsave

thenewsettingsandexittheConfigura-

tionmode.

Thefollowingtablespecifiestheuserse-

lectablesettingsintheConfigurationmode:

"F" Fahrenheit

1 Temperature scale "01F-C" "F"

"C" Celsius

Remote wall thermostat mode "ON" Remote wall thermostat on

2 "02 r - t .... OFF"

(pg. 21 ) "OFF Remote wall thermostat off

"ON" If El.

"ON" Heat source available heat

3 Heat Source (pg.17) "03 HEAT" "OFF" If no

"OFF" Not available El. Ht.

Heat pump (This setting is "ON" Heat pump available

4 skipped if Heat source setting "04 H-P .... OFF"

is "Off")(pg. 17) "OFF" Not available

Auto-changeover differential

5 (This setting is skipped if Heat "05 d-b" Between '2 ° - 6..... 2"

source setting is "Off"or if re-

mote setting is 'On")(pg. 18)

"2" 250 hours

"5" 500 hours

Check filter time (pg.19) "06 F:Lt .... 7" 750 hours "10"

"10" 1000 hours

"12" 1250 hours

"OFF" Disabled

"5" 5 minutes

7 Room air sampling (pg. 20) "07 A:r .... 15"

"10" 10 minutes

"15" 15 minutes

"ON" Enabled

8 Annunciation (pg.23) "08 b-P .... ON ....

"OFF" Disabled

"ON" Always on

9 LCD Backlight (pg.23) "09 L:tE" "In" Intermittent "In

"OFF" Always off

10 Louver position "Lou" 01, 02, 03, 04, 05, 06 and Auto "01"

11 Test Mode "tSt .... tSt" Off

The SLEEP TIMER feature allows the

user, with the push of a single button, to

have the unit switch off using the preset tim-

er. When the control is in the "On" mode,

pressing the "TIMER" will enter or exit the

Sleep Timer mode. When in Sleep Timer

mode, the word "TIMER" will appear on the

LCD display. The unit will continue to oper-

ate for thirty (30) minutes then switch off.

To enter Test mode the control must

first be in the Off mode. Then by press-

ing the "ON/OFF", "PROG" and "TIME"

buttons simultaneously for three seconds

the unit will enter the Test mode. While in

Test mode the display will flash "tSt" pe-

riodically. The operation of the unit can

be checked without having to wait out the

delays. To exit the Test mode press the

"ON/OFF", "PROG" and "TIME" buttons

simultaneously again or by cycling off the

main power to the control.

Test mode is a feature where by all

timers are reduced or eliminated. Test

mode is intended to aid the technician

while checking system operation after in-

stallation or during trouble shooting. Test

mode is not intended for the end user or

for normal operation. Also test mode is

not available while in Remote Wall Ther-

mostat mode".

IAUTION: Do not cycle the unit" I

n and off repeatedly while in Test

ode as this will cause damage to

he compressor. Do not leave the

nit in Test mode J

For Wall mounted thermostat op-

eration the control must be configured

through the Configuration mode. Be sure

to select Remote - ON in the configura-

tion menu. (See Configuration mode)

In Remote Thermostat mode the unit

mounted keypad will have limited capabil-

ity. Some of the buttons will not be oper-

able. Only the FAN and TIME buttons will

function. The ability to clear the FILTER

CHECK warning will also be available by

pressing the MODE and FAN buttons si-

multaneously.

_Choosing a Thermostat:

EMI offers several remote thermostats

that are compatible with the Ductless split

system air handlers. See the latest price

list for a list of available thermostats. It is

important to choose a thermostat that will

match the equipment that you have se-

lected. For single stage cooling or heart-

ing choose a single stage Heat/Cool ther-

mostat. If you have selected an outdoor

heat pump unit and an indoor unit with

electric heat then chose a two-stage heat-

ing, single-stage cooling thermostat.

,_ Selecting a thermostat "by others"

When selecting a thermostat other than

those offered by EMI, it is important to

choose a 24V thermostat that matches

your application. EMI equipment is com-

patible with most mercury bulb, digital or

power steeling thermostats.

_Cooling Only:

Select a thermostat that is compatible

with a cooling system. The thermostat

should have "R", "Y" and "G" terminals

and may also have a "C" terminal.

,_ Cooling only with Electric Heat:

Select a thermostat that is compatible

with a cooling - electric heat system. The

thermostat should have "R", "Y", "W" and

"G" terminals. The thermostat may also

have a "C" terminal.

h;_Heat Pump with Electric Heat:

Select a thermostat that is compatible

with a single stage cooling, two-stage

heat, heat pump system. The thermostat

should have "R", "Y", "O', "W (or W2)"

and "G" terminals. The thermostat may

also have a "C" terminal. If the indoor unit

is not equipped with electric heat then a

single stage heat pump thermostat is ad-

equate.

_" Fan Operation

The indoor unit utilizes a two-speed mo-

tor. The FAN button will allow the selection

of the desired fan speed setting (High or

Low). The wall thermostat will control the

call for fan operation (On or Off) through

the low volt terminals "R" and "G".

After the room thermostat has been sat-

isfied and the call for fan has been re-

moved, the indoor fan to remain on for

an additional 60 seconds. This increases

efficiency by pulling the remaining energy

from the unit.

Some thermostats are equipped with an

"AUTO/ON" fan switch. When this switch

is placed in the "ON" position the indoor

fan will run continuous. When the switch

is in the "AUTO" position the indoor fan will

cycle with the call for heating or cooling.

_ Cooling operation:

The wall thermostat will control the call for

cooling operation (On or Off) through the

low volt terminals "R" and "Y". After con-

necting the thermostat to the unit, place

the system switch in Cool mode. Adjust

the set-point temperature below the room

temperature. The compressor and fan

motors will start and cooling will begin.

Next, place the set-point temperature

above the room temperature. The outdoor

condenser will stop. The fan will operate

as described in Fan Operation.

ote: Once the cooling has cycled off_

r following a power outage, the com- I

ressor will not start for at least three I

inures (See Short Cycle Protection)J

• _/Electric heat operation:

For remote thermostat operation with

electric heat the control must first be

configured properly (Remote - ON, Heat

source- "ON"). See: Configuration Inter-

face mode.

The wall thermostat will control the call for

electric heat operation (On or Off) through

the low volt terminals "R" and "W". After

connecting the thermostat to unit, place

the system switch in Heat mode. Adjust

the set-point temperature above the room

temperature. The electric heat will ener-

gize along with the indoor fan motor. Heat-

ing will continue so long as the set-point

remains above room temperature. Next,

place the set-point temperature below

room temperature. The Electric heater will

switch off and the indoor fan will remain

on for an additional sixty seconds.

!ote: Once the heating has cycled off_

r following a power outage, the heat- I

ng will not resume for at least three I

•_Optional Heat Pump With Electric

Heat (2-stage heating):

For remote thermostat operation for two

stage heating including a heat pump

condenser and indoor electric heat, the

control must first be configured properly

(Remote - ON, Heat source - "ON"). See:

Configuration Interface mode.

The wall thermostat will control the call for

electric heat operation (On or Off) through

the low Volt terminals "R" and "W" for

compressor (heat pump) heating through

terminals "R" and "Y". After connecting the

two stage heating thermostat to the unit,

place the system switch in Heat mode.

Adjust the set-point temperature above

the roomtemperature.Thecompres-

sorandfanmotorswillstartandheating

willbegin.Dependingonthethermostat

selected,electricheatwillalsoenergize

whenthedeviationbetweenroomtem-

peratureandsetpointtemperatureishigh

enoughtocallforsecondstageheating.

(Seethethermostatowner'smanualfor

thisfeature)Placetheset-pointtempera-

turebelowthe roomtemperature.The

outdoorcondenserandelectricheatwill

stopwhiletheindoorfanwillremainonfor

anadditionalsixtyseconds.

•_Short Cycle Protection (ASCT):

The electronic control incorporates an

anti-short cycle timer (ASCT) feature de-

signed to protect the compressor from

short cycling. The ASCT is activated im-

mediately following the off cycle of the

outdoor unit. Once the room temperature

is satisfied and the outdoor unit switches

off, the ASCT will not allow the outdoor to

restart unit a three-minute time period has

elapsed.

This feature will prevent the compres-

sor and heat source from rapid re-starts.

Once switched off, including following a

power outage, the compressor or heat

source shall not re-start for a minimum of

three minutes.

_Staggered Start Protection:

Designed for systems with electric heat,

in heat pump and dry modes the stag-

gered start feature will prevent the com-

pressor and electric heater from starting

simultaneously. There is a thirty-second

delay between the start of the compres-

sor and start of the electric heater while in

Dry mode and Heat pump mode.

A__Minimum Run Time:

Once started, the minimum on time pre-

vents either the compressor or heat

source from cycling off prematurely. The

minimum ON time for both the compressor

and electric heat is two minutes. Minimum

on time is available only while the control

is configured for Unit mounted keypad op-

eration. Minimum on times are disables

while in Remote thermostat mode.

A¢ LCD Back Light:

The LCD display can be illuminated using

the LCD back light feature. The selectable

settings are "Off", "On", and "intermittent"

and can be set in the Configuration mode.

By selecting "Off" the backlight will remain

offat all times. By selecting "On" the back-

light will remain on at all times including

while in the Off mode interface. If "Inter-

mittent" is selected, the backlight will re-

main for 10 seconds after the push of any

button while the control is in the On mode

or after the push of the "ON/OFF" button

while in the Off mode interface.

A_ Drain Pan Sensor:

The drain pan sensors monitor the con-

densate level in each of the units drain

pans. Should the water in either pan

reach a critical level, the monitor will auto-

matically signal the main control unit. The

controls microprocessor will in turn switch

off the condensing unit for a minimum of

three minutes and until the fault condi-

tion has been cleared, to prevent further

condensate production. A fault code "E02"

will then flash on the controls LCD display

and will automatically reset once the fault

condition is cleared.

A_'Annunciation:

The unit is equipped with an annunciation

feature where by the control will beep pro-

viding the user with audio feedback confirm-

ing that the microprocessor has received its

commands. The annunciation feature must

be activated in the Configuration mode. The

selections are "Off" and "On". If "Off" is se-

lected, annunciation will remain off. If "On"

is selected then annunciation will beep with

the push of any button in the On mode or

with the push of the "ON/OFF" button while

in the Off mode interface.

ote: While in Remote thermostat_

ode (see configuration), only the|

N" and "TIME" buttons are acti-|

ated and will beep when pressed. J

_' Memory Backup:

In the event of a power failure the control will

retain all of it's settings including the mode

of operation. When power is restored, after

a three minute time delay, the control will re-

turn to the mode of operation that it was in

prior to the power failure.

_s Room air sensor fault: E01

If the room air sensor is disconnected,

damaged or malfunctions the LCD display

will flash error code "E01" to signify that

a fault has occurred. Operation will con-

tinue with the control using the last known

value for the room air sensor.

A_ Condensate fault: E02

If the control senses a condensate fault

condition either through the optional con-

densate pumps safety switch or the drain

pan sensors, the LCD display will flash

error code "EO2". The compressor will

switch off for a minimum of three minutes

and until the fault condition is corrected.

_ID coil sensor fault: E03

The indoor coil sensor monitors the tem-

perature of the indoor coil. If a freeze

condition exists continuously for three

minutes, the LCD will display error code

"E03" to signify that a fault has occurred.

The compressor will switch off for a mini-

mum of three minutes and until the fault

condition is corrected. Also, if the micro-

processor detects an evaporator freeze

condition four times within a 24 hour pe-

riod, the filter check indicator will appear.

Pressing the "+" will increase

the set point temperature settinc

Pressing the "-" button will de-

crease the setpoint temperature

setting

Pressing the "DRY" button will

place the unit in Dry Mode

Pressing the "FAN" button will

place the unit in fan mode

Pressing the "POWER" button will

turn the unit On or Off.

Pressing the "AUTO" button will

place the unit in Auto changeover

mode.

Pressing the "FAN SPEED" but-

ton will scroll the unit through fan

the fan speed selection. The se-

quence is High, Low and Auto.

Pressing the "HEAT" button will

place the unit in Heat mode.

Pressing the "COOL" button will

place the unit in Cool mode

NOTE: Batteries Included.

Pressing the "LOUVER" button

will enter the Louver Configura-

tion mode While in Louver Con-

figuration mode, each successive

pressof the louver buttonwill scroll

through the louver positions. After

idle for 10 seconds, the control

will exit the Louver Configuration

mode. ,J

To copy the settings from any day to the entire week:

1) Select the day to be copied.

2) Simultaneously press the "FAN" and "PROG" buttons for three seconds.

Operation of the unit depends on the room temperature. It may be necessary to warm

the room before testing the unit's cooling abilities.

• Remove any tools or other obstructions

• Be sure the filter is in place

• Verify that the unit is level

• Separate any lines that contact each other

• Replace the cabinet end cap and the

grille front of the unit

Test each power and circuit connec-

tion before powering up the system. Use

the unit mounted electronic thermostat con-

trols to start the system. (Refer to the Initial

Start-Ul2 and the Operating Instructions in

Control Operation Section, Thermostat,

Unit Mount or Remote.)

_ote: Check the outdoor unit's start-_

p instructions for specific require- I

ents and procedures. ]

TheTestUnitPerformanceDatasheet

belowisprovidedforusebya qualified

serviceprofessionalintheeventthatthere

isaproblemwiththeunit.Inorderforour

TechnicalServiceDepartmentto better

serveyou,pleasecompleteandhave

thisinformationreadywhencalling.Make

suretoincludetheModelNumber,Serial

Number,DateofInstallation.

CallourTechnicalSupportDepartment

@1-800-228-9364.

iModelNumber

SerialNumber

Date:

Technician:

Mode:ICooling

EvaporatorEnteringAir-DB

EvaporatorEnteringAir-WB

iEvaporatorLeavingAir-DB

iEvaporatorLeavingAir-WB

EnteringAir

iLeavingAir

TemperatureSplit

iCompressor Suction - PSIG

Compressor Discharge - PSIG

iCompressor - Volts

Compressor - Ampe

OD Fan Motor- Volts

OD Fan Motor- Amps

IDFan Motor- Volts

IDFan Motor-Amps

TotalVolts

Compressor Suction

Compressor Discharge

Liquid Out Cond

Liquid before Expansion

Suction out Evaporator

DB - Temp Split at evap.

CompressorSuperheat

SubCooling

a)Tovacuum:Useabrushattachment

andvacuumallvisibledirt.

Serviceshouldbeperformedbya

£1ualifiedserviceagencyandanannual

systemcheckisrecommended.EMIunits

aredesignedandconstructedforreliability

andlonglifewithminimalmaintenance.To

insurepeakoperatingefficiency:

1.Cleanairfilterona monthlybasisor

whenitisvisiblydirty*:

a)Thefilterisaccessedbyremoving

thefrontairintakeaccessgrille:

•Liftandremovegrille

b)Oruseagardenhose:Followsteps

1and2thenhosefilteroff.Letfilter

drybeforereplacing.

*Allowing dust to collect on the filter will

result in reduction of air flow and cause

the unit to lose efficiency. This condition

will cause the unit to malfunction.

3. Replace filters and grille before running

unit.

2. To clean the filter pull open the 2 clips

at the base of the filter and carefully pull

the filter out. Place the filter on a flat

surface.

of filter clip

4. Vacuum dust from the return air grille and 5. The unit may be wiped with a damp cloth

coil surface when cleaning the filter, when needed.

Note: Do not run the unit without the

filter or the grille.

When trouble-shooting the indoor unit,

please refer to the wiring diagram that is

supplied with the equipment. It is located

either on the on the back of the removable

return air grill. If you are unable to locate

the wiring diagram please feel free to call

the factory technical service line at (800)

228-9364 and one can be faxed or mailed.

Please have the full model and serial num-

ber available prior to calling.

EMI America Series evaporators are

designed to operate with EMI America

Series condensers. The evaporator (indoor

unit) and condenser (outdoor unit) are to be

independently connected to the electrical

service panel and protected by separate

time delay fuse or HACR breakers. (See the

unit name plate for the correct breaker type

and size). The indoor and outdoor units are

also connected to each other via a 24V inter-

connect wiring. A transformer provides the

low Volt power source for the controls. The

number of low Volt interconnect conductors

will be two to six depending on heating op-

tions and or thermostat selection. Intercon-

nect wire should be at least 18 awg. Refer to

the unit wiring diagram for the interconnect

diagram that matches your system.

Unit mount ¢entro/ configuration

Heat Pump Application

' !

Remote wall mounted thermostat configuration i

Heat Pump Application

F:;2;] -F:;;;q ......................

aeta a meu ted thermostatcoo guration

Straight CootApplication

c]F;;=;q...........F;;,::]

When trouble shooting any EMI prod-

uct, it is important to first check the rating

plate for proper field voltage and breaker

size. Secondly using a voltmeter check the

incoming power supply to see that it agrees

with the rating plate. The incoming power

should not exceed the nameplate voltage.

Also, the incoming power should not be

below the minimum voltage stated on the

rating plate (197V for units rated 208/230V

and 104V for units rated 115V).

A check for low voltage power should

also be made. By placing a voltmeter

across low Volt terminals "R" and "C" at

the indoor unit, there should be a reading

of 24V.

TestMode is available for unit mounted

control configuration only. Use of test mode

can aid in the functional check of the unit.

It can also be a helpful tool when trouble

shooting to solve a problem.

To enter test mode, while the unit is in

off mode, press "On/Off", 'PROG" AND

"Time" buttons simultaneously for three

seconds. To exit press again or remove

power to the unit. While in test mode all

timers are shortened.

While in test mode, all timers are

eliminated. Avoid short cycling the

compressor. After system checks

are complete, the control must be re-

turned to normal operation. DO NOT

LEAVE THE SYSTEM IN TEST

MODEl

•• • =e

Cooling only units utilize low Volt

interconnecting wires between the indoor

unit, outdoor units and thermostat. For air

handlers with unit mounted controls, wires

(WLC/WLH) designated "Y" (yellow) and "C"

(brown) of the indoor air handler should be

connected to the corresponding "Y" (yellow)

and "C" (brown) wires or terminals of the

outdoor condenser. Other wires or terminals

such as "R"(red) or "O" (orange) may not be

needed and should be protect by a wire nut

from making contact with the junction box

or other metal surfaces.

Refer to low Volt interconnect diagram

interconnect diagram Figure I for unit

mounted controls and Figure 2 for remote

thermostat connection.

A 24V transformer located in the indoor

air handler unit provides low Volt control

power to both the indoor air handler and

outdoor condenser. The 24V power supply

can be measured by placing a meter across

the "R" and "C" low Volt terminals of the

air handler. The air handler will switch on

and off the condenser through the yellow

(Y) wire. When the air handier is calling for

cooling, 24V can be measured between

terminals (wires) Y and C.

Units with electric heat utilize a control

relay located on the circuit board in the

control box. As a safety feature, an auto

resetting limit switch located on the heater

end plate or on the heater assembly will

interrupt power to the heater should an

over-heat condition occur. Each electric

heat assembly is also equipped with a one

time fuse link (if trigered a new fuse link is

required). Should electric heat temperatures

rise above the auto resetting limit switch, a

non-resetting, one time fuse link will open

and the heater will remain off.

The following current values apply

when the unit is connected to a 230V power

supply. These values include fan motor cur-

rent. If the supply power is different, this will

in turn affect the amp draw of the heater.

5kW = 22.3 amps, 4kW = 18 amps,

3kW = 13.5 amps.

Heat pump units with electric heat utilize

four to six interconnecting, low Volt wires

depending control setup and/or thermostat

selected. Refer to the low Volt interconnect

section and Figures 1&2for your particular

unit. A 24V transformer located in the indoor

air handler provides low Volt control power

to both the air handler and condenser. With

high Volt power supplied to the condenser,

24V can be measured across the red (R)

and brown (C) wires at all times.

A?fCooling: The air handler will cycle

the condenser on and off through the

yellow (Y) wire. To check for a condenser

signal, select cooling mode on the indoor

unit or thermostat and place the set-point

temperature below room temperature.

Then, with a voltmeter check for 24 Volts

across the yellow (Y) and brown (C) wires.

If no signal is found then re-check all wiring

connections to ensure that they match the

low Volt interconnect diagram. Check the

output of the 24V transformer (located in

the air handler) to ensure that the control

voltage is present.

EMIheatpumpsystemsutilizeareversing

valveisthatisenergizedinthecooling

mode.Thereversing-valvesignalisprovided

throughtheorange(O)lowVoltwireofthe

airhandlerorthermostat.Itshouldremain

energizedconstantlyaslongastheindoor

unitorthermostatremainsincoolingmode.

Tocheckfor24Vreversingvalvevoltage,at

theoutdoorunit,placeavoltmeteracross

thebrown(C)andorange(O)wireswhile

inthecoolingmode.

_Heating: Heatpumpunits can

accommodate two-stage heating when

an optional electric strip heater is present

along with a heat pump condenser. The

first stage being the compressor and the

second is electric heat. The air handler or

wall thermostat will cycle the condenser

through the yellow (Y) wire as it does

in cooling however the reversing valve

will no___ttbe energized. To check for a

condenser signal, place the indoor unit or

wall thermostat in heating. Next place the

set-point temperature one degree above

room temperature to call the first stage of

heating. Then, with a voltmeter check for

24 Volts across the yellow (Y) and brown

heat should be off at this point. Select a

set-point temperature that is more than

two degrees above the room temperature

to call for the second stage of heating. The

electric heat should energize along with

the 24V compressor signal between "Y"

and "C". Check to see that the amp draw

corresponds with the electric heat rating.

The following current values apply

when the unit is connected to a 230V power

supply. These values include indoor fan mo-

tor current. If the supply power is different,

this will affect the amp draw of the heater.

Units with electric heat utilize a control

relay located on the circuit board in the

control box. As a safety feature, an auto

resetting limit switch located on the heater

end plate or on the heater assembly will

interrupt power to the heater should an over-

heat condition occur. Each electric heat

assembly is also equipped with a one time

fuse link. Should electric heat temperatures

rise above the auto resetting limit switch, a

non-resetting, one time fuse link will open

and the heater will remain off (to restart a

new fuse link is required).

EMI Air Handlers are available with an

optional condensate pump. Condensate

pumps are recommended when it is not

possible to gravity drain the condensation

from the indoor unit. Depending on the

pump manufacture the maximum lift for the

pump will vary. Consult the pump instruc-

tions for the maximum lift for the particular

pump being used.

Condensation generated by the evapo-

rator will collect in the pumps' reservoir.

When the water level is high enough, a float

switch will close and energize the pump

motor clearing the water from the reservoir.

Should for any reason the water exceed the

maximum preset level, a safety switch will

open, there by interrupting the (Y) signal to

the condenser. This will prevent the evapo-

rator from generating more condensation

and spilling out of the unit.

5kW = 22.3 amps, 4kW = 18 amps,

3kW = 13.5 amps.

Q:Thesystemhasjustbeeninstalledus-

inganEMIindoorunitanda non-EMI

condenser.Thereisnodisplayandthe

unitwillnotoperate.

A: EMIairhandlersaremanufacturedwith

alowVolttransformerinstalled.When

connectinganEMIevaporatortoanon-

EMIcondenser,checktoensurethat

thereisno24Vcontroltransformerin

theoutdoorunit.Onlyonetransformer

isrequired.Ifboththeindoorunitand

outdoorunitcontainatransformer,one

mustberemovedfromthesystem.

Q:Thecondenserwillnotstartalthough

theindoorunitappearsnormal.What

shouldIdo?

A: Attheindoorunit,makesurethatthe

controlisincoolingandthesetpoint

temperatureisbelowroomtemperature.

Next,usingavoltmeter,checkfor24V

acrosstheyellow(Y)andbrown(C)

wires.If24Vispresentthencheckfor

wiringbreaksorimproperconnections

betweentheindoorandoutdoorunits.

A: Some EMI condensers are equipped

with a manual reset high-pressure

switch. It is located on the high side of

the refrigerant system usually on the

discharge line of the compressor. To

reset, simply push the red button in. If

the switch was tripped there will be a

"click" when it resets.

A: If the unit is equipped with a condensate

pump check to see if the safety float

has been tripped. This can be done by

first disconnecting both ends of the float

switch. Then with an Ohmmeter, check

for continuity across the switch. If the

switch is open then the pump is not

clearing or the switch may be bad.

Q: The display on the indoor unit is blank.

What should I do?

A: Check the power supply (see "Power

supply check" Section). If the unit still

fails to turn on via the On/off button

then inspect the control box for any

apparent wires that may have come

loose during shipping. Also inspect the

circuit boards for burnt components. If

no obvious problem can be found then

replace all circuit boards including the

unit keypad. Do not attempt to trouble

shoot the individual circuit boards.

Q: The display tends to flicker at times. Is

this normal?

A: A small amount of flickering of the dis-

play is normal. Depending on the room

lighting, flickering may be noticeable at

some times more than others.

Q: How long will the fan run?

A: While the unit is in cooling or heating

and auto fan mode is selected, Fan

speed will be determined by the micro-

processor and speed adjustment will be

made according to room and setpoint

temperatures. The fan will switch to

High speed when room temperature

deviates by more than two degrees

from setpoint. The fan will switch to Low

speed if the deviation is one degree.

When the room temperature reaches

setpoint temperature the heat/cool call

is dropped. The fan will then stay on for

an additional 60 seconds to purge unit

of any residual energy. If High or Low

is selected then the fan will operate

continuous regardless of set point or

room temperatures.

Q: What causes my indoor unit to freeze-up?

A: Evaporator freeze up is usually the

symptom of another problem. Units with

infrared compatible, unit mounted con-

trols are equipped with freeze protection

topreventfreezeupfromoccurring.If

freezeupdoesoccurthencheckthe

following.

• Checkthatthefreezesensorlocated

inthelowestpartofthecoil.Generally

thisiswherefreezeupwillbegin.

• Checkthatthefreezesensorinserted

fullyandsnuginthecoilfin.Ifnot

anotherlocationmayneedto be

selected.Becarefulnottoinsertthe

sensordirectlyintothecoiltuberather

insertthesensorbetweentwotubes.

• Checktheindoorairfilter.Itshould

becleanandfreeofdirt.Adirtyfilter

willreduceairflowandefficiency.

Alsocheckthatthecoilisclean.

Ifthecoilisdirtythenitshouldbe

cleanedusinganappropriatecoil

cleanerormilddetergent.

Istheequipmentbeingoperated

in coolingmodewhenoutdoor

temperaturesarebelow60°F?Ifit

is,thenthecondensershouldbe

fittedwithlowambientcontrolso

thatthepropersystempressures

aremaintained.

Doesthesystemhavetheproper

refrigerantcharge?A systemlow

onrefrigerantcancauseevaporator

freeze-up.Tochecksystemcharge

youwillneedtocontactaqualified

refrigerationservicetechnician.

Refrigerantchargeinformationcan

befoundin IOMfortheoutdoor

condensingunit.

NOTE:Due to EMI's ongoing development programs,

design and specifications may change without notice.

t_1 ½"

WLHA09

WLHA12

WLHA24

WLCA30

WLCA36

26 ½"

36 ½"

46 ½"

WLHA09 58.00

WLHA12 60.25

WLHA24 66.20

WLCA30 90.10

WLCA36 91.10

09/12 45

18/24 56

30/36 60

MODEL

09/12

VOLTSIHZIPH HP

I15/60/1 0.02

208/230/60/1 0.02

0.083

0.070

208/230/60/1 1/I0

208/230/60/I 1/10

115/60/1

I15/60/1

208/230/60/I

208/230/60/1

208/230/60/I

30/36

HEATER

K.W.

0.75

3.00

0.75

1.25

3.00

5.00

AIViPS

6.50

13.04

6.52

10.90

TOTAL

AMPS

0.64

7.14

0.34

13.38

1.20

7.72

12.10

0.56

13.04 13.60

21.74 22.30

- 0.80

21.74 22.54

MIN

VOLT

I04

197

104

I04

I97

197

I97

197

I97

m m

HACR

M.C.A. BRKR

0.8 15

8.9 15

0.4 15

16.7 20

1.5 15

9.7 15

15.1 20

0.7 15

17.0 20

27.9 30

1.0 15

28.2 30

l-'lld 11_

4OO

75O

1,100

35(

37._

)oc

ARI Standard ARI Standard

2101240UAC 2!10t240UHP

)ry 900 15

)ry 1,225 25

)ry 1,250 27

*WLC/WLH Suction Connection size is 3/4" O.D.

and must bush down at the WLC/WLH UniL

** WLC Suction Connection size is 5/8" O.D. a

factory supplied kit is provided to transition to

3/4" O.D. interconnect.

NOTE: Due to EMI's ongoing development programs, design and specifications

may change without notice.

WLC/WLH

S2C

SIC/SIH

Side Discharge Side Discharge

S1CA9 WLHA09

S1CA2 WLHA12

S1CA8 WLHA24

S1CA4 WLHA24

S1CA3 WLCA36

S1CA6 WLCA36

..................[[[[[R_[ [

11.8 R22

12.9 R22

13.0 R22

12.5 R22

12.6 R22

12.1 R22

S1HA9 WLHA09 8,200

S1HA2 WLHA12 I0,200

S1HA8 WLHA24 I6,400

S1HA4 WLHA24 20,600

_EEF NSPF

13.0 7.7

mE m

-5 12.0 3.6

.?3 12.1 3.4

.?3 12.1 3.8

.71 11.9 3.5

:_2

WLHA09 S2CA99

WLHA12 S2CA22

WLHA09+WLHA12 S2CA92

NOTE: Due to EMI's ongoing development programs, design and specifications

may change without notice.

WLC

T2C, T3C & T4C

Top Discharge

36,000 13 .79 12.1 R22

45,000 13 .73 11.8 R22

27,000 13 .80 11.8 R22

41,000 13 .76 11.8 R22

34,000 13 .72 11.8 R22

WLHA24 T2CA88

WLHA24 T2CA44

WLHA09+WLHA24 T2CA98

WLHA24 T2CA84

WLHA12+WLHA24 T2CA24

WLHA09+WLHA24 T3CA994 41,000 13 .77 11.9 R22

WLHA09 T3CA999 27,000 13 .80 11.7 R22

WLHA12 T3CA222 34,000 13 .71 11.7 R22

WLH09A+WLHA24 T3CA928 39,000 13 .77 11.9 R22

WLHA09+WLHA12+WLHA24 T3CA924 43,000 13 .75 11.8 R22

WLHA12+WLHA24 T3CA228 41,000 13 .74 11.8 R22

WLHA09+WLHA12 T3CA922 32,000 13 .74 11.8 R22

WLHA09+WLHA12 T3CA992 30,000 13 .77 11.9 R22

WLHA09+WLHA24 T3CA998 36,000 13 .80 11.8 R22

WLHA12+WLHA24 T3CA224 46,000 13 .72 11.7 R22

zE mm

tun EER _HR Ref.

WLHA09 T4CA9999 ,000 13 .80 1.8 R22

WLHA12 T4CA2222 ,000 13 .73 1.7 R22

WLHA09+WLHA12 T4CA9222 ,000 13 .71 1.8 R22

WLHA09+WLHA12 T4CA9992 ,000 13 .71 1.8 R22

WLHA09+WLHA12 T4CA9922 ,000 13 .73 1.9 R22

ALL PRODUCT LiMiTED WARRANTY

Enviromaster International LLC (EMI) warrants to the purchaser/owner that EMI prod-

ucts will be free from defects in material and workmanship under the normal use and

maintenance for a period of twelve months for all components and sixty months on unit

compressors from the date of original installation, or fifteen months for all components

and sixty-three months on unit compressors from the date of manufacture, whichever

comes first.

WHAT WE WILL COVER

EMI will replace any defective part returned to EMI's approved service organization with

a new or rebuilt part at no charge. The replacement part assumes that unused portion

of this warranty.

WHAT WE DON'T COVER

THIS WARRANTY DOES NOT iNCLUDE LABOR or other costs incurred for repairing,

removing, installing, shipping, servicing, or handling of either defective or replacement

parts.

EMI IS NOT RESPONSIBLE FOR:

*Normal maintenance

*Damage or repairs required as a consequence of faulty installation or application by

others.

,Failure to start due to voltage conditions, blown fuses, open circuit breakers, or other

damages due to the inadequacy or interruption of electrical service.

o Damage or repairs needed as a consequence of any misapplication, abuse, improper

servicing, unauthorized alteration, or improper operation.

*Damage as a result of floods, winds, fires, lightening, accidents, corrosive atmosphere,

or other conditions beyond the control of EMI.

*Parts not supplied or designated by EMI.

,Products installed outside the United States or Canada.

o Any damages to person or property of whatever kind, direct or indirect, special or

consequential, Whether resulting from use or toss of use of the product.

LiMITATiON OF WARRANTIES

This warranty is exclusive and in lieu of any implied warranties of merchantability and

fitness for a particular purpose and all other warranties express or implied, The remedies

provided for in this warranty are exclusive and shall constitute the only liabilities on the part

of EMI including any statements made by any individual which shall be of no effect.

FOR SERVICE OR REPAIR:

(1) Contact the Installer

(2) Call the nearest Distributor

(3) Call or write:

Enviromaster international LLC

5780 Success Drive, Rome, NY 13440

www.enviromaster.com

WL C/WLH

High Wall Evaporator

CAC

Cassette Evaporator

SIC & SIH Single Zone

Side Discharge

$2C Dual Zone

Side Discharge

T2C, T3C & T4C 2, 3 & 4 Zone

Top Discharge

Phone: 1-800-228-9364 5780 Success Drive,

Fax: 1-800-232-9364 i_J_ _f_ _i _ Rome, NY 13440

EMI Air Handler (indoor Blower&evap) Manual L0612529

Navigation menu

Versions of this User Manual:

Views

Navigation