HigH EfficiEncy DuctlEss split systEm
WlcA/WlHA HigH WAll EVApORAtOR
l
A
stRAigHt cOOl/HEAt pump*
Nominal Circuit Capacities:
WLHA 9,000, 12,000,
18,000, 24,000 Btuh*
n
and WLCA (only) 30,000 & 36,000 Btuh
A
* Heat Pump only available for 9,000-24,000 Btuh units.
m
E
nc
A
n
E
int
A
m
D
n
A
n
O
WLCA/WLHA
ti
ERA
p
O
n,
O
ti
A
l
A
Enviromaster International LLC
5780 Success Dr.
Rome, NY 13440
inst
An ISO 9001-2000 Certified Company
P/N# 240006021 Rev. 1.3 [05/07]
ControLs And ComponEnts
prodUCt dEsCription
Continued
The AmericaSeries WLCA/WLHA is
available as a (Dx) direct expansion straight
cool and heat pump. It offers a contempo-
rarydesigninaductlesstypeevaporatorand
combines attractive appearance with high
efficiency conditioning for small to medium
size commercial or residential spaces. The
WLCA/WLHAis 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 5 kW of supplemental heat.
• Infra red compatible control allows
use of optional IR hand held controller.
note: Unit mounted controls are
fully functional without the handheld
remote.
• Operation modes include Heat, Cool,
Dry, Fan and Auto Change-over.
• Fan Operation –Auto/On. 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)
This American-made evaporator offers
ease of installation, operation, and service.
It can be matched with EMI’s S1CA/S1HA
09-24 and S1CA 30-36 Btuh Single-Zone
Condensing Units, the S2CAside discharge
Dual-Zone Condensing Unit, or the T2CA,
T3CA, and T4CA 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.
• 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).
ControLs And ComponEnts
Note: If the control is configured for
unit mount control do NOT connect
a wall thermostat to the unit.
• Large LCD Backlit Display
• Single unit mounted control pack-
age, configurable to either unit mount
or remote wall thermostat operation,
reducing model number or SKU’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.
• 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 louver with optional
sweep or six stationary settings.
3
WLCA/WLHA High Wall Evaporator
WLCA/WLHA ControLs And ComponEnts
Continued
• Modular design – reduces parts
optionAL EqUipmEnt
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 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.
instALLEr sUppLiEd itEms
• 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)
• Condensate drain pan over flow
protection
Cabinet Features:
• Durable ABS plastic cabinet with a
galvanized steel sub-chassis.
itEms for ConsidErAtion
• 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.
Determine the best location for mount-
ing the unit for room air circulation.
Locate outdoor and indoor units as
close together as possible.
Determine how power wire (high and
low voltage) condensate drainage,
and refrigerant piping may be run to
and from the unit.
• Manuallyadjustableverticaldischargefins.
• 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 (G90U), 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 (Fº), or Celsius
(Cº) temperature scale.
WLCA/WLHA - 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
distancefromtheceilingisstatedonthe
template provided with the unit packag-
ing. The cabinet left and right end caps
must be accessible for removal without
obstruction. (See below)
notE: Unit mounted controls are fully func-
tional without the remote.
CEiLinG
4” Minimum
NOTE: If the control is configured for unit
mount control do NOT connect a wall ther-
mostat to the unit.
10”
Minimum
6”
Min.
IMPORTANT: Check equipment for damage
prior to installation, if damaged contact the
wholesale distributer.
WLCA/WLHA High Wall Evaporator
4
WLCA/WLHA moUntinG prEpArAtion
The WLCA/WLHA must be mounted surface to absorb any potential vibration
plumb and level to a vertical surface to and prevent the formation of condensation
prevent unit vibration and/or unwanted on the wall.
noise. It is recommended that the unit
notE: If excessive noise or vibration is
be mounted directly to a smooth surface
such as Sheetrock® wallboard or similar
experienced from a unit mounted to a ma-
sonry block wall, check to ensure the unit is
plumb and level. If noise or vibration persists,
contact the wholesale distributor.
material. If mounting to a masonry block
wall, there should be a smooth barrier
between the unit and the masonry block
WLCA/WLHA HiGH WALL Unit moUntinG
5. Secure the bracket to the wall with the
appropriate screws (for wood) or an-
chors (for masonry). Ensure the bracket
is mounted in a manner that will support
the weight of the unit.
1. After determining the best location for
the unit, use the cardboard template
provided in the packaging.
note: The wall hanging bracket slot is NOT
located in the center of the unit.
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.
Mounting
slot
4. Use the supplied wall bracket. For
shipping purposes, the wall bracket is
fastened to the back of the unit.
Slot for piping
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
construction. PVC pipe (3” or 4” I.D.)
may be used as a pipe chase.
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 a qualified service tech-
nician is recommended.
Remove and discard
these screws
5
WLCA/WLHA High Wall Evaporator
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
Electrical Wiring site preparation
All wiring should be in accordance with the
National Electric Code (NEC) and the local
building codes.
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.
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.
NOTE: 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 end
cap of the unit.
3. Each unit must have a separate branch
circuit protected by a time delay fuse or
breaker. Refer to the unit rating plate
Locate Electrical Wiring
2. Lift and remove the front grill to expose
the third screw.
Helpfull Hint:
Prior to re-
moveing
the endcap
and bottom
use a small
board to prop
the unit away
from the wall.
3. Once the screws are removed,
slide the left end cap
off to expose con
box and locate th
wiring diagram on
Board
the inside of the
end cap.
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.
Remove screw
control box
WLCA/WLHA High Wall Evaporator
6
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
4. To access High and Low wiring remove
the screw on the front of the control box.
High Volt Electrical Wiring
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.
Low Volt interconnect Wiring
for Unit mounted controls
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.
Low Voltage
Connections
Ground
L1
L2
WArninG
!
!
Be sure to keep any un-used wires
insulated with a wire nut or crimp.
Note: All low Volt interconnect
wiring must be at least 18 AWg.
Units With or Without Heat
Cooling only units utilize two low Volt
interconnecting wires between the indoor
and outdoor units.
Heat Pump Connection: In addition to the
“Y” and “C” connections required for cool-
ing, heat pumps require a reversing valve
control wire “O” (orange) that is energized
in the cooling mode.
• 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)
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.
• 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 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)
7
WLCA/WLHA High Wall Evaporator
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
LoW VoLt intErConnECt WirinG for Unit moUntEd ControLs
Units With or Without Heat continued
Unit mount Controls
Heat pump Connection
Unit mount Controls
Two-Stage Heating
Straight Cool
Figure 1A
Figure 1B
Not used
Not used
Low Volt interconnect diagram intercon-
nect diagram Figure 1A and Figure 1B
for unit mounted controls.
When connecting to a defrosting heat
pump, such as EMI model S1HA, indoor
units with electric heat utilize five intercon-
necting low Volt wires between the indoor
and outdoor units.
remote thermostat Controls
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.
Figure 2 A
notE: All low Volt interconnect
wiring must be at least 18 awg.
notE: Forremotethermostatmode
the key pad will have limited opera-
tion - Sequence of Operation - Wall
Mounted Thermostat, page 21.
Choosing a remote Wall mounted
thermostat: See “Wall Thermostat
Control” section page 21.
WLCA/WLHA High Wall Evaporator
8
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
Heat pump Connection remote thermostat – two-stage Heating
Low Volt interconnect diagram interconnect diagram figures 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.
Figure 2 B
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-
trol do NOT connect a wall
thermostat to the unit.
Figure 2 C
Refer to low Volt interconnect
diagram interconnect diagram
Figures 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 “O” (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.
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 S1HA.
Once certain all electrical connetions
are made replace control box cover.
control box
Replace screw
9
WLCA/WLHA High Wall Evaporator
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
rEfriGErAnt pipinG
pipinG do’s And don’ts
The WLCA/WLHA is equipped with a
Flo-Rater/Piston Expansion device. Con-
nections are sweat type.
• Avoid piping on a rainy day.
• Use refrigerant grade copper tubing.
• Use a tubing bender and avoid unnec-
essary bending.
• Cap ends of lines until ready for final
connections.
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.
Once the unit is mounted and level
the WLCA/WLHA piping connections can
be made by removing the left end cap and
bottom panel:
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.)
note: The left end cap must
be removed prior to remov-
ing the bottom. follow the
instructions on page 6 for
removing the end cap.
1. Remove the Philips-h
screws on bottom
unit and lift bottom
panel off.
suction line
Liquid line
condensate drain
When matching a the WLHA24 with an
18,000 Btuh condenser circuit, the inter-
connecting suction line needs to be 5/8”
O.D. to match the condenser service valve
connection. Therefore the 3/4” O.D. suc-
tion connection of the WLHA24 unit needs
to be reduced to 5/8” at the WLHA24 unit
connection.
WLCA/WLHA High Wall Evaporator
10
rEfriGErAnt pipinG
Any change in the diameter of the tubing
must be made at the indoor connection.
Line-set diameter is determined by the
condenser service valve size.
WLH24
Use of a larger diameter liquid or suc-
tion line can harm the compressor!
reducing bushing goes here for
18,000 Btuh system match
piston/orifiCE instALLAtion instrUCtion
Important: Replace the existing piston (before installing the unit) with the piston
supplied in Kit Bag when any:
• WLHA24 evaporator is matched with a S1CA8000 or S1HA8000 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 listed below no piston change is required. (See chart below)
propEr instALLAtion of piston/orifiCE rEpLACEmEnt
Evaporator
model #
Condenser
factory installed
field Changeover
Evaporator
Btuh
Piston/Orifice Size
Piston/Orifice Size
WLHA24
WLHA24
S1CA8000
S1HA8000
.059”
.059”
.053”
.053”
* “8” in the capacity decoding field = 18,000 Btuh
11
WLCA/WLHA High Wall Evaporator
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
rEfriGErAnt proCEssinG
4. Braze tubing into fittings.
5. Attach manifold set.
WArninG
!
!
It is illegal to discharge
refrigerant into the atmosphere.
Use proper reclaiming methods
and equipment when installing or
servicing this unit.
Manifold
Vacuum Pump Micron Gage
Top discharge
condeser shown
Finish all pipe connecting before
proceeding to charging the system.
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.
manifold setup for Evacuation
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.
Top discharge condeser shown
2. Protect the valves by wrapping with a
wet rag "heat sink" before brazing.
shield
heat sink
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.
Top discharge
condeser shown
Refer to Charts in condenser manual to
“fine tune” the refrigerant charge.
3. We recommend the use of a shield (can
be made from some scrap metal) to
protect the paint.
WLCA30 & WLCA36 utilize a TXV (Thermo
Expansion Valve), which should be set at
10°f superheat.
WLCA/WLHA High Wall Evaporator
12
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
rEfriGErAnt proCEssinG
Top discharge
condeser shown
8. Charge to proper weight, charge
based on your feet of interconnect
(see below).
Note: Charging should be done with a
dial-a-charge or weighed in with a scale.
refer to refrigerant
Charge table for
specified line charge.
efrigerant
R
-22
R
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.
top disCHArGE rEfriGErAnt CHArGE CHArt
Circuit Capacity
Line Chg/ft
.25 oz.
factory Charge
28 oz.
ref.
R-22
R-22
R-22
R-22
09
12
18
24
.25 oz.
30 oz.
.56 oz.
48 oz.
.56 oz.
60 oz.
s1CA rEfriGErAnt CHArGE tABLE
Condenser
S1CA9
Evaporator pairing
WLHA09
Line Chg/ft
.25 oz.
factory Charge
37 oz.
S1CA2
WLHA12
.25 oz.
40 oz.
S1CA8
WLHA24
.56 oz.
51 oz.
S1CA4
S1CA3
S1CA6
WLHA24
WLCA30
WLCA36
.56 oz.
.56 oz.
.56 oz.
65 oz.
72 oz.
90 oz.
s1HA (HEAt pUmp) rEfriGErAnt CHArGE tABLE
Condenser
S1HA9
Evaporator pairing
WLHA09
Line Chg/ft
.25 oz.
factory Charge
41 oz.
S1HA2
WLHA12
.25 oz.
44 oz.
S1HA8
WLHA24
.56 oz.
53 oz.
S1HA4
WLHA24
.56 oz.
67 oz.
s2CA rEfriGErAnt CHArGE tABLE
Condenser
S2CA99
Evaporator pairing
WLHA09
Line Chg/ft
.25 oz.
factory Charge
28 oz./ 28 oz.
33 oz./ 33 oz.
28 oz./ 33 oz.
S2CA22
WLHA12
.25 oz.
S2CA92
WLHA09+WLHA12
.25 oz.
13
WLCA/WLHA High Wall Evaporator
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
rEAssEmBLinG tHE WLCA/WLHA CABinEt
When satisfied that the system is leakfreereinstallthebottomandleftendcapintheprecise
order shown below:
Ensure seam is tight.
1. Replace the bottom panal.
5. Once end cap is
properly seated
tighten the screw
as shown above.
2. Fasten the right end
6. Thighten bottom
end cap screw.
cap side first with the
Philips-head screw.
3. Next replace and
tighten the re-
maining screws
across the bot-
tom panel.
7. Replace the grille,
ensure it’s seated
properly on the
unit.
Replace left
left end cap.
8. Tighten the top
scew on the left
end cap.
WLCA/WLHA High Wall Evaporator
14
ControL UsEr intErfACE instrUCtions
qUiCK GUidE – UsEr intErfACE BUttons
“modE” button = select mode of operation, Cool,
Heat, Auto changeover (ACO), Dry or Fan mode.
“Up” arrow button = increase set
“timEr” button = enter or exit
Sleep Timer mode.
point temp., also = increment set-
tings in Config., Time Set + Prog.
modes.
“timE” button = enter or exit Set
Time mode.
“on/off” button press once =
unit on or off.
“proG” button = enter or exit
Pre-prog. Run mode.
“doWn” arrow button = decrease
set point temp. also = decrement
settings in Config., Time Set + Prog.
modes.
“fAn” button = select fan speed,
High, Low or Auto.
“fAn/LoUVEr”
button press & hold for 3 seconds = “LOU” on LCD, then UP & DOWN ARROW = positions
quick Guide – Configuration 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.
“fiLtEr CHECK” 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.
ConfiGUrAtion modE: in Off mode, press
tEst modE: In Off mode, press “ON/OFF” +
“PROG” + “TIME” buttons simultaneously for 3
sec. = Test mode. Press “ON/OFF” + “PROG”
+ “TIME” buttons simultaneously again = exit
Test mode.
“MODE”
+
“PROG” buttons simultaneously
for 10 sec. = Config. mode. Press “MODE” +
“PROG” buttons again or if left idle for 20 sec. =
exit Config. mode.
UsEr intErfACE BUttons
modE
on/off
The “modE” button allows
Pressing the “on/off”
the selection of the mode of operation,
Cool, Heat, Auto changeover (ACO), Dry
or Fan mode.
button once will switch the unit either on
or off.
15
WLCA/WLHA High Wall Evaporator
ControL UsEr intErfACE instrUCtions
UsEr intErfACE BUttons
fAn
ver mode. To enter the louver mode press
The “fAn” button will select
and hold the Fan/Louver button for three
seconds. While in louver set mode the
word “Lou” will display on the LCD.
the fan speed, High, Low or Auto. High
and low are constant fan speed settings
and can be selected in all modes except
Dry mode. In Dry mode, the fan will op-
erate constantly at low speed. Auto fan
mode is not available in Fan (only), Dry
and Remote wall thermostat modes.
ALtErnAtE BUtton sELECtions
Clear filter
proG
The “proG” button is used
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.
to enter or exit the Pre-program Run
mode. The Pre-program Run mode can
be entered while the control is in “Cool”,
“Heat” or “Auto” modes. Pre-program Run
mode can not be entered while in Dry,
Fan or Off modes. While the control is in
Pre-program Run mode the word “PRO-
GRAM” will be displayed on the LCD.
quick Copy
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.
timE
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.
7-day program
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.
timEr
The “timEr” button is used
to enter or exit the Sleep Timer mode.
Configuration Mode
Up ArroW
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 “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.
test mode
doWn ArroW
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
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.ns
LoUVEr
CAUtion: Do not cycle the unit on and
off repeatedly while in Test mode as this
will cause damage to the compressor. Do
not leave the unit in Test mode.
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) lou-
WLCA/WLHA High Wall Evaporator
16
sEqUEnCE of opErAtion – Unit moUntEd KEy pAd modE
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
Unit mount infrared
Control operation
EMIAir Handlers are equipped with a unit
mount, infrared compatible control pack-
age. This user friendly, microprocessor
control is designed to optimize system
performance and protect the refrigeration
system from unwanted short cycling and
evaporator freeze-ups. Operation of the
unit can be made by either the keypad
on the unit or by using the optional
hand held infrared controller.
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.
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)
Note: When power is first applied to the
control or after a power outage there is
a three minute delay before the com-
pressor or electric heat will energize.
This is to protect the unit from short cy-
cling due to loss of power.
on/off
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.
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.
Louver operation
mode of operation
When the control is in the Off mode
the louver will remain in the closed posi-
tion. When the unit is turned on via the ON/
OFF button the louver will open and oper-
ate according to the setting selected in the
Louver Configuration mode.
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.
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
fan operation
The indoor unit utilizes a two-speed
motor with three operational fan modes.
The FAN button will allow the selection of
17
WLCA/WLHA High Wall Evaporator
sEqUEnCE of opErAtion – Unit moUntEd KEy pAd modE
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”.
or Down arrow buttons will allow selection
of six different fixed louver positions or
auto (oscillation) mode. The sequence is
01, 02, 03, 04, 05, 06 and Auto. Once the
desired setting is selected, press the Fan/
Louver button momentarily or let idle for
10 seconds to exit the louver set mode.
While the control is in the On mode,
the louver will remain in the selected
louver position. If Auto louver operation
is selected, the louver will oscillate only
when the fan is running. When the control
is turned off via the ON/OFF button the
louver will return to the closed position.
Cool mode
For cooling operation first turn the unit
on via the ON/OFF button. Select Cool
mode via the MODE button. The room
temperature and set point temperature
will be displayed. The setpoint tempera-
ture can be changed with each succes-
sive press of the Up or Down arrow but-
tons or by holding the button in.
Place the setpoint temperature below
the room temperature. The compressor
will start and cooling will continue for a
minimum of two minutes and as long as
the setpoint remains below room temper-
ature. Once the room temperature is sat-
isfied for at least 60 seconds and the two-
minute minimum run time has elapsed
the compressor will cycle 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
notE: Once the compressor is
switched off, or after a power outage
there is a three-minute delay before
the compressor will re-start.
Heat mode
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
WLCA/WLHA High Wall Evaporator
18
sEqUEnCE of opErAtion – Unit moUntEd KEy pAd modE
between room temperature and setpoint perature by two degrees, heating will stop
temperature is less than two degrees. At and cooling will continue to bring the room
that time the electric heat will switch off temperature back down to setpoint temper-
and the heat pump (compressor) will take ature. The fan will operate continuously at
over the heating demand. The electric low speed while in Dry Mode.
heater will not re-start until a three minute
In order to prevent short cycling there
delay has elapsed. Once the room tem- is a two minute minimum on time for both
perature is satisfied and the two-minute cooling and heating. The minimum off time
minimum run time has elapsed, the com- is 3 minutes. Also there is a 30 second de-
pressor will cycle off. The compressor will lay between the start of the compressor
not re-start until a three minute delay has and the start of the heat source.
elapsed. The fan will operate as described
in “Fan Operation”.
Auto Changeover mode
dry mode
For Auto Changeover mode (ACO)
the unit must have a heat source. Also the
For dry mode operation the unit must control must first be configured properly
have an electric heater. Also the control (Heat source – “ON”). See: Configuration
must first be configured properly (Heat Interface mode.
source – “ON”). See: Configuration Inter-
face mode.
Auto Changeover mode will operate
either Cooling mode or Heating mode.
Dry mode will remove humidity from The control will select the mode of opera-
the air while maintaining a specific setpoint tion depending on the setpoint tempera-
temperature. This is done by energizing the ture, room temperature and the differen-
compressor in cooling along with the electric tial setting selected in the Configuration
heater. Dry mode will not maintain a specific mode (See Configuration mode).
humidity level. The unit must be equipped
with an optional electric heat element.
For Auto Changeover mode, first turn
the unit on via the ON/OFF button. Select
For Dry Mode operation, first turn the Auto mode via the Mode button. The room
unit on via the ON/OFF button. Select Dry temperature and setpoint temperature will
mode via the MODE button. The room be displayed. Press either the Up or Down
temperature and setpoint temperature will arrow buttons to change the setpoint tem-
be displayed. Press either the Up or Down perature. The setpoint temperature will
arrow buttons to change the setpoint tem- change by one degree with each succes-
perature. The setpoint temperature will sive press of the Up or Down arrow but-
change by one degree with each succes- tons. Holding the button in will change the
sive press of the Up or Down arrow but- temperature rapidly.
tons. Holding the button in will change the
temperature rapidly.
Place the setpoint temperature be-
low the room temperature by the dead
band amount selected in the configura-
tion mode. The compressor will start and
the unit will run cooling operation as de-
scribed under “Cool Mode”.
If the set point temperature is above
the room temperature by the dead band
amount selected in the configuration
mode, the unit will run heating operation
as described under “Heat Mode”
Place the setpoint temperature at a
desired room temperature. Depending on
the difference between room temperature
and setpoint temperature the compressor
and/or heat source will energize. If the
room temperature and setpoint tempera-
ture are the same the compressor will op-
erate in cooling and the electric heat will
also energize.
Should the room temperature fall be-
low the setpoint temperature by two de-
grees, the compressor will stop and heating
will continue to boost the room temperature
back up to setpoint temperature. If the room
temperature rises above the setpoint tem-
set time mode
The “TIME” button is used to enter
or exit the Set Time mode. The Set Time
mode can be entered while the control is in
19
WLCA/WLHA High Wall Evaporator
sEqUEnCE of opErAtion – Unit moUntEd KEy pAd modE
any mode including the Off mode. To en-
manual run
ter the Set Time mode, press the “TIME”
button in for three seconds. Pressing
This is normal operating (non pre-pro-
the “PROG” (NEXT) button will advance
gram run) mode. Settings for temperature,
to the next item. The order is (1) Day of
mode and fan speed are selected by the
week, (2) Hour and (3) Minute. Pressing
user and will not change with the passing
the “MODE” (BACK) button will return to
of time. The word “PROGRAM” does NOT
the previous item. The time of day and
display on the LCD.
day of week can be changed using the up
or down arrow buttons.
pre-programmed run mode
When the “TIME” button is pressed
again or left idle for 20 seconds, the con-
This feature allows the setpoint tem-
trol shall save the new settings and return
perature to be changed according to the
to the previous mode.
pre-programmed set point and time of day
settings. The setpoint and time settings
are programmed into the control through
7-day programming mode
the 7-day programming interface.
The 7-day programming mode is used
The Pre-programmed Run mode can
to store the settings for the Pre-program
be entered from Cool, Heat orAuto modes
Run mode.
only. Pre-programmed run mode can-
When the unit is in either the Off or Run
not be entered from Dry or Fan modes.
mode, the 7-Day Programming mode can
Pressing the “PROG” button momentari-
be entered by pressing the “PROG” and
ly will enter or exit the Pre-program run
“TIME” buttons simultaneously for three
mode. The word “PROGRAM” will appear
seconds. When the “PROG” and “TIME”
in the LCD display. Then, with the pass-
buttons are pressed simultaneously again
ing of time, the setpoint will change to the
or left idle for 20 seconds, the control shall
programmed setting at the time selected.
save the new settings and return to the
previous interface mode.
filter Check
While in the 7-Day programming mode,
use the up or down arrows to change the
To aid in filter maintenance, the micro-
time, temperature or period settings. Use
processor will keep track of the units run
the “MODE” (BACK) or “PROG” (NEXT)
time. Then, after the filter check time has
buttons to select the mode to be changed.
elapsed, a “FILTER CHECK” warning will
Settings for (1) Day of week, (2) Pe-
appear the LCD display. The filter check
riod of day, (3) Hour, (4), Minute, (5) Cool
time is selectable through the configura-
setpoint temperature, (6) Heat setpoint
tion mode. Available settings are 250,
temperature and (7) Auto setpoint tem-
500, 750, 1000, and 1250 hours. Also if
perature can be entered.
four evaporator freeze ups occur within a
24 hour period, (See fault condition E03)
the filter check indicator will appear.
quick Copy
After filter maintenance has been per-
Quick copy is a feature of the 7-day
formed, press the “MODE” and “FAN” but-
programming mode. It is used to copy the
tons simultaneously for three seconds to
settings of any day to the rest of the week.
clear the filter check warning.
While in 7-day programming, select the
day to be copied. Then, press the “FAN”
and “PROG” buttons simultaneously for
three seconds. The selected day will be
copied to the rest of the week.
WLCA/WLHA High Wall Evaporator
20
sEqUEnCE of opErAtion – Unit moUntEd KEy pAd modE
Configuration Mode
room Air sampling
In the auto (cycling) fan mode Room
Air Sampling will automatically cycle the
fan on for a minimum of 60 seconds, with
the control in the satisfied state, to peri-
odically circulate room air. Room air strati-
fication is therefore minimized due to the
fan being off for long periods of time so
that the microprocessor may accurately
track room temperature.
Room air sampling must be selected
through the configuration mode. Select-
able sampling times are: “OFF” (disabled),
5 min, 10 min, and 15 min.
While the unit is in the Off mode,
pressing the “MODE” and “PROG” but-
tons simultaneously for 10 seconds will
enter the Configuration mode. While in
Configuration mode, pressing the MODE”
and “PROG” buttons simultaneously
again or left idle for 20 seconds, will save
the new settings and exit the Configura-
tion mode.
The following table specifies the user se-
lectable settings in the Configuration mode:
Table #1 – ConfiGUrAtion modE
LCd titLE
dispLAy
possiBLE VALUE
fACtory
sEttinGs
sEttinG itEm
(flashing)
“F”
“C”
Fahrenheit
Celsius
1
2
Temperature scale
“01 F-C”
“02 r – t”
“F”
“ON”
“OFF
Remote wall thermostat on
Remote wall thermostat off
Remote wall thermostat mode
“OFF”
(pg. 21)
“ON” If El.
“ON”
Heat source available
heat
3
Heat Source (pg. 17)
“03 HEAT”
“OFF” If no
El. Ht.
“OFF”
Not available
Heat pump (This setting is
skipped if Heat source setting
is “Off”)(pg.17)
“ON”
Heat pump available
4
5
“04 H-P”
“05 d-b”
“OFF”
“OFF”
Not available
Auto-changeover differential
(This setting is skipped if Heat
source setting is “Off”or if
Between “2° – 6°”
“2”
remote setting is “On”)(pg.18)
“2”
“5”
250 hours
500 hours
750 hours
1000 hours
1250 hours
Disabled
6
7
Check filter time (pg.19)
“06 F:Lt”
“07 A:r”
“10”
“15”
“7”
“10”
“12”
“OFF”
“5”
5 minutes
10 minutes
15 minutes
Enabled
Room air sampling (pg. 20)
“10”
“15”
“ON”
“OFF”
8
9
Annunciation (pg. 23)
LCD Backlight (pg. 23)
“08 b-P”
“09 L:tE”
“ON””
Disabled
“ON”
Always on
“In
“In”
Intermittent
“OFF”
Always off
Louver position (pgs. 16 & 17)
Test Mode (pgs. 16 & 22)
“Lou”
“tSt”
01, 02, 03, 04, 05, 06 and Auto
“tSt”
“01”
Off
21
WLCA/WLHA High Wall Evaporator
sEqUEnCE of opErAtion – Unit moUntEd KEy pAd modE
sleep timer
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.
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.
test mode
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”.
CAUtion: Do not cycle the unit
on and off repeatedly while in Test
mode as this will cause damage to
the compressor. Do not leave the
unit in Test mode
sEqUEnCE of opErAtion – WALL moUntEd tHErmostAt modE
heat pump unit and an indoor unit with
electric heat then chose a two-stage heat-
ing, single-stage cooling thermostat.
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.
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.
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
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.
WLCA/WLHA High Wall Evaporator
22
sEqUEnCE of opErAtion – WALL moUntEd tHErmostAt modE
Note: Once the cooling has cycled off
or following a power outage, the com-
pressor will not start for at least three
minutes (See Short Cycle Protection).
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.
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.
Fan Operation
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.
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.
Note: Once the heating has cycled off
or following a power outage, the heat-
ing will not resume for at least three
minutes (See Short Cycle Protection).
Optional Heat Pump With Electric
Heat (2-stage heating):
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.
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,
23
WLCA/WLHA High Wall Evaporator
sEqUEnCE of opErAtion – WALL moUntEd tHErmostAt modE
place the system switch in Heat mode. source from cycling off prematurely. The
Adjust the set-point temperature above 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.
the room temperature. The compres-
sor and fan motors will start and heating
will begin. Depending on the thermostat
selected, electric heat will also energize
when the deviation between room tem-
perature and set point temperature is high
enough to call for second stage heating.
(See the thermostat owner’s manual for
this feature) Place the set-point tempera-
ture below the room temperature. The
outdoor condenser and electric heat will
stop while the indoor fan will remain on for
an additional sixty seconds.
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
off at 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.
other features
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-
Drain Pan Sensor:
mediately following the off cycle of the 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.
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.
Annunciation:
Staggered Start Protection:
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.
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.
Minimum Run Time:
Once started, the minimum on time pre-
vents either the compressor or heat
WLCA/WLHA High Wall Evaporator
24
sEqUEnCE of opErAtion – WALL moUntEd tHErmostAt modE
Condensate fault: E02
If the control senses a condensate fault
Note: While in Remote thermostat
mode (see configuration), only the
condition either through the optional con-
“FAN” and “TIME” buttons are acti-
densate pumps safety switch or the drain
vated and will beep when pressed.
pan sensors, the LCD display will flash
error code “E02”. The compressor will
Memory Backup:
switch off for a minimum of three minutes
In the event of a power failure the control will
and until the fault condition is corrected.
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.
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.
fault Conditions
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.
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.
infrArEd rEmotE ControL option
operational range 55- 90° f (in 1° increments.)
Pressing the “+” will increase
poWEr
the set point temperature setting.
Pressing the “-“ button will de-
crease the setpoint temperature
setting.
Pressing the “poWEr” button will
turn the unit On or Off.
AUto
dry
Pressing the “AUto” button will
place the unit in Auto changeover
mode.
Pressing the “DRY” button will
place the unit in Dry Mode.
fAn spEEd
fAn
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 “fAn” button will
place the unit in fan mode.
HEAt
LoUVEr
Pressing the “HEAt” button will
place the unit in Heat mode.
Pressing the “LOUVER” button
will enter the Louver Configura-
tion mode. While in Louver Con-
figuration mode, each successive
press of the louver button will scroll
through the louver positions. After
idle for 10 seconds, the control
will exit the Louver Configuration
mode.
CooL
Pressing the “COOL” button will
place the unit in Cool mode.
NOTE: Batteries Included.
25
WLCA/WLHA High Wall Evaporator
optionAL HAnd HELd ControLLEr proGrAmminG
Table #2
proGrAmminG sCHEdULE
Cool
Heat
:
:
:
:
:
:
:
Auto
Cool
Heat
Auto
Cool
Heat
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Auto
Cool
Heat
Auto
:
:
:
:
:
:
:
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.
initiAL stArt-Up
Operation of the unit depends on the room temperature. It may be necessary to warm
the room before testing the unit’s cooling abilities.
Start-Up and the operating instructions in
WLCA/WLHA prEpErAtion
Control Operation Section, thermostat,
for stArt-Up
unit mount or remote.)
note: Check the outdoor unit’s start-
up instructions for specific require-
ments and procedures.
• Remove any tools or other obstructions
• Be sure the filter is in place
• Verify that the unit is level
• Separate anylinesthatcontacteachother
• 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
WLCA/WLHA High Wall Evaporator
26
tEst Unit pErformAnCE dAtA sHEEt
The Test Unit Performance Data sheet
this information ready when calling. Make
sure to include the Model Number, Serial
Number, Date of Installation.
Call our Technical Support Department
@ 1-800-228-9364.
below is provided for use by a qualified
service professional in the event that there
is a problem with the unit. In order for our
Technical Service Department to better
serve you, please complete and have
Test Unit Performance Data
Date:
Model Number
Technician:
Serial Number
Mode:
Cooling
Indoor Section
Evaporator Entering Air - DB
Evaporator Entering Air - WB
Evaporator Leaving Air - DB
Evaporator Leaving Air - WB
Outdoor Section
Notes
Entering Air
Leaving Air
Temperature Split
Operating Pressures
Compressor Suction - PSIG
Compressor Discharge - PSIG
Power Input
Compressor - Volts
Compressor - Amps
OD Fan Motor - Volts
OD Fan Motor - Amps
ID Fan Motor - Volts
ID Fan Motor - Amps
Total Volts
Total Amps
Temperatures - Degrees F°
Compressor Suction
Compressor Discharge
Liquid Out Cond.
Liquid before Expansion
Suction out Evaporator
Capacity Calculations
DB - Temp Split at evap.
Test Summary
Compressor Superheat
Sub Cooling
27
WLCA/WLHA High Wall Evaporator
mAintEnAnCE And troUBLEsHootinG proCEdUrE
mAintEnAnCE
a) To vacuum: Use a brush attachment
WArninG
!
!
and vacuum all visible dirt.
Turn the POWER OFF to the unit be-
fore servicing or cleaning.
Service should be performed by a
qualified service agency and an annual
system check is recommended. EMI units
are designed and constructed for reliability
and long life with minimal maintenance. To
insure peak operating efficiency:
1. Clean air filter on a monthly basis or
when it is visibly dirty*:
b) Or use a garden hose: Follow steps
1 and 2 then hose filter off. Let filter
dry before replacing.
a) The filter is accessed by removing
the front air intake access grille:
• Lift and remove grille
*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.
Close-up of filter clip
WLCA/WLHA High Wall Evaporator
28
mAintEnAnCE And troUBLEsHootinG proCEdUrE
mAintEnAnCE
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.
troUBLEsHootinG
Emi Air Handlers With
Unit mount infrared Controls
independently connected to the electrical
WArninG
!
!
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.
All service should be performed by a
qualified service technician. Before
removing access panels or control
covers to expose moving parts of
non-insulated live electrical compo-
nents for service, disconnect all high
Volt power supplies to both the indoor
unit and outdoor unit. Failure to do so
could result in physical injury and/or
electrical shock.
When trouble-shooting the indoor unit,
please refer to the wiring diagram that is
supplied with the equipment. It is located on
the inside surface of the left end cap. (Also
refer to Locate Electrical Wiring section
in the front of this instruction.) 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 number available prior to calling.
EMI America Series evaporators are
Figure 1A
designed to operate with EMI America
Series condensers. The evaporator (indoor
unit) and condenser (outdoor unit) are to be
Not used
29
WLCA/WLHA High Wall Evaporator
troUBLEsHootinG proCEdUrE Continued
Figure 1B
Figure 2 C
Not used
power supply Check
Figure 2 A
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.
Figure 2 B
Test Mode 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.
WLCA/WLHA High Wall Evaporator
30
troUBLEsHootinG proCEdUrE Continued
end plate or on the heater assembly will
CAUTION
!
!
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.
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
MODE!
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.
LoW VoLt ControLs
Cooling only Units
Cooling only units utilize low Volt
interconnecting wires between the indoor
unit, outdoor units and thermostat. For air
handlers with unit mounted controls, wires
(WLCA/WLHA) 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 1 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
5kW = 22.3 amps, 4kW = 18 amps,
3kW = 13.5 amps.
optional Heat pump
with Electric Heat
Heatpumpunitswithelectricheatutilize
four to six interconnecting, low Volt wires
depending control setup and/or thermostat
selected. Refer to the low Volt interconnect
section and Figures 1 & 2 for 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.
Cooling: The air handler will cycle
outdoor condenser. The 24V power supply the condenser on and off through the
can be measured by placing a meter across yellow (Y) wire. To check for a condenser
the “R” and “C” low Volt terminals of the signal, select cooling mode on the indoor
air handler. The air handler will switch on unit or thermostat and place the set-point
and off the condenser through the yellow temperature below room temperature.
(Y) wire. When the air handler is calling for Then, with a voltmeter check for 24 Volts
cooling, 24V can be measured between across the yellow (Y) and brown (C) wires.
terminals (wires) Y and C.
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.
Electric Heat
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
31
WLCA/WLHA High Wall Evaporator
troUBLEsHootinG proCEdUrE Continued
Units with electric heat utilize a control
optional Heat pump
with Electric Heat
Continued
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 heat pump systems utilize a reversing
valve is that is energized in the cooling
mode. The reversing-valve signal is provided
through the orange (O) low Volt wire of the
air handler or thermostat. It should remain
energized constantly as long as the indoor
unit or thermostat remains in cooling mode.
To check for 24V reversing valve voltage, at
the outdoor unit, place a voltmeter across
the brown (C) and orange (O) wires while
in the cooling mode.
Units With Condensation pumps
Heating: Heat pump units 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 not be 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
(C) wires at the condenser. The electric
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
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.
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.
5kW = 22.3 amps, 4kW = 18 amps,
3kW = 13.5 amps.
WLCA/WLHA High Wall Evaporator
32
troUBLEsHootinG proCEdUrE Continued
frequently Asked questions
q: The system has just been installed us-
q: The display on the indoor unit is blank.
ing an EMI indoor unit and a non-EMI
condenser. There is no display and the
unit will not operate.
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.
A: EMI air handlers are manufactured with
a low Volt transformer installed. When
connecting an EMI evaporator to a non-
EMI condenser, check to ensure that
there is no 24V control transformer in
the outdoor unit. Only one transformer
is required. If both the indoor unit and
outdoor unit contain a transformer, one
must be removed from the system.
q: The display tends to flicker at times. Is
q: The condenser will not start although
the indoor unit appears normal. What
should I do?
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.
A: At the indoor unit, make sure that the
control is in cooling and the setpoint
temperatureisbelowroomtemperature.
Next, using a volt meter, check for 24V
across the yellow (Y) and brown (C)
wires. If 24V is present then check for
wiring breaks or improper connections
between the indoor and outdoor units.
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.
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: 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
33
WLCA/WLHA High Wall Evaporator
troUBLEsHootinG proCEdUrE Continued
frequently Asked questions Continued
to prevent freeze up from occurring. If
freeze up does occur then check the
following.
• Is the equipment being operated
in cooling mode when outdoor
temperatures are below 60°F? If it
is, then the condenser should be
fitted with low ambient control so
that the proper system pressures
are maintained.
• Check that the freeze sensor located
inthelowestpartofthecoil.Generally
this is where freeze up will begin.
• Check that the freeze sensor inserted
fully and snug in the coil fin. If not
another location may need to be
selected. Be careful not to insert the
sensordirectlyintothecoiltuberather
insert the sensor between two tubes.
• Does the system have the proper
refrigerant charge? A system low
on refrigerant can cause evaporator
freeze-up. To check system charge
you will need to contact a qualified
refrigeration service technician.
Refrigerant charge information can
be found in IOM for the outdoor
condensing unit.
• Check the indoor air filter. It should
be clean and free of dirt. A dirty filter
will reduce airflow and efficiency.
Also check that the coil is clean.
If the coil is dirty then it should be
cleaned using an appropriate coil
cleaner or mild detergent.
WLCA/WLHA High Wall Evaporator
34
WLCA/WLHA HiGH WALL EVAporAtor spECifiCAtions And dimEnsions
notE: Due to EMI’s ongoing development programs,
design and specifications may change without notice.
B
A
C
D
5 ¼”
1 ½”
2”
4 ⅜”
E
WLCA/WLHA pHysiCAL dimEnsions
“A”
“B”
“C”
“d”
“E”
mounting
tubing
Access
model depth Height Length Bracket
Clearance Clearance
WLHA09
WLHA12
WLHA24
WLCA30
WLCA36
9 ⅞”
9 ⅞”
9 ⅞”
9 ⅞”
9 ⅞”
15 ¼”
15 ¼”
15 ¼”
15 ¼”
15 ¼”
38 ½”
38 ½”
48 ½”
58 ½”
58 ½”
24”
24”
34”
44”
44”
26 ½”
26 ½”
36 ½”
46 ½”
46 ½”
WLCA/WLHA
sHippinG WEiGHt
WLCA/WLHA oBsErVEd
soUnd VALUEs *
(230V High speed fan)
model
Lbs.
58.00
60.25
66.20
90.10
91.10
model
09/12
18/24
30/36
dBA
45
WLHA09
WLHA12
WLHA24
WLCA30
WLCA36
56
60
35
WLCA/WLHA High Wall Evaporator
WLCA/WLHA HiGH WALL EVAporAtor spECifiCAtions
WLCA/WLHA ELECtriCAL spECifiCAtions
MODEL
#
FAN
RLA
HEATER
K.W.
TOTAL
AMPS VOLT
MIN
HACR
BRKR
VOLTS/HZ/PH
HP
AMPS
M.C.A.
smALL CABinEt 09/12
115/60/1
115/60/1
0.64
0.64
0.02
0.02
0.02
0.02
–
–
0.64
6.50 7.14
0.34
13.04 13.38
104
104
197
197
0.8
8.9
15
15
15
20
0.75
–
09/12
208/230/60/1 0.34
208/230/60/1 0.34
–
0.4
3.00
16.7
mEdiUm CABinEt 18/24
115/60/1
115/60/1
115/60/1
1.20 0.083
–
–
1.20
104
104
104
197
197
197
1.5
9.7
15
15
20
15
20
30
1.20 0.083
1.20 0.083
0.75
1.25
–
6.52 7.72
10.90 12.10
15.1
0.7
24
208/230/60/1 0.56 0.070
208/230/60/1 0.56 0.070
208/230/60/1 0.56 0.070
–
0.56
3.00
5.00
13.04 13.60
21.74 22.30
17.0
27.9
LArGE CABinEt 30/36
208/230/60/1 0.80
208/230/60/1 0.80
1/10
1/10
–
–
0.80
197
197
1.0
15
30
30/36
5.00
21.74 22.54
28.2
WLCA/WLHA
intErConnECtinG-LinE sizE
system
disCHArGE Air spEEd And fLoW @ 230V
Liquid suction Condensate
Capacity
Btuh
o.d.
o.d.
i.d.
High
Cfm Cfm
Low
throw/
model
Coil fpm
Dry 900
ft.
09
12
18
24
30
36
1/4”
1/4”
3/8”
3/8”
3/8”
3/8”
1/2”
1/2”
1/2”
1/2”
1/2”
1/2”
1/2”
09/12
18/24
400
750
350
675
900
15
25
27
1/2”
Dry 1,225
Dry 1,250
5/8” *
3/4”
30/36 1,100
3/4” **
3/4” **
* WLCA/WLHA Suction Connection size is 3/4” O.D.
and must bush down at the WLCA/WLHA Unit.
** WLCA Suction Connection size is 5/8” O.D. a
factory supplied kit is provided to transition to 3/4”
O.D. interconnect.
WLCA/WLHA High Wall Evaporator
36
WLCA/WLHA systEm options
notE: Due to EMI’s ongoing development programs, design and specifications
may change without notice.
WLCA/WLHA
S2CA
S1CA/S1HA
Side Discharge
Side Discharge
CooLinG systEms WitH WALL Units
C o n d e n s e r
S1CA9
S1CA2
S1CA8
S1CA4
S1CA3
S1CA6
Wall Unit
WLHA09
WLHA12
WLHA24
WLHA24
WLCA36
WLCA36
Btuh sEEr sHr EEr ref.
9,000
12,000
18,000
13.0
13.0
13.0
.79
.74
.78
.70
11.8
1 2 . 9
13.0
12.5
R22
R22
R22
R22
24,000 13.0
30,000 13.0
33,600 13.0
.72 12.6 R22
.69 1 2 . 1 R22
HEAt pUmps systEm options WitH WALL Units
Cooling Heating
Condenser Wall Unit
sEEr Hspf sHr EEr Cop ref.
Btuh
Btuh
S1HA9
S1HA2
S1HA8
S1HA4
WLHA09
WLHA12
WLHA24
WLHA24
9,000
8,200
13.0
13.0
13.0
13.0
7.7
7.7
7.7
7.7
.75 12.0
3.6 R22
3.4 R22
3.8 R22
3.5 R22
12,000
18,000
23,000
10,200
16,400
20,600
.73
.73
.71
11.1
12.1
11.9
CooLinG systEms WitH s2CA sidE disCHArGE
Wall Unit (s)
WLHA09
C o n d e n s e r
S2CA99
Btuh sEEr sHr EEr ref.
18,000
23,000
21,000
13
13
13
.80
.72
.72
11.9 R22
WLHA12
S2CA22
12.4 R22
12.0 R22
WLHA09+WLHA12
S2CA92
37
WLCA/WLHA High Wall Evaporator
WLCA/WLHA systEm options
Continued
notE: Due to EMI’s ongoing development programs, design and specifications
may change without notice.
WLCA
T2CA, T3CA & T4CA
Top Discharge
systEm options WITH t2CA top disCHArGE
Wall Unit(s)
WLHA24
C o n d e n s e r
T2CA88
T2CA44
T2CA98
T2CA84
T2CA24
Btuh
36,000
45,000
27,000
41,000
34,000
sEEr sHr EEr ref.
13
13
13
13
13
.79
.73
.80
.76
.72
12.1 R22
11.8 R22
11.8 R22
11.8 R22
11.8 R22
WLHA24
WLHA09+WLHA24
WLHA24
WLHA12+WLHA24
systEm options WITH t3CA top disCHArGE
Wall Unit(s)
Condenser
T3CA994
T3CA999
T3CA222
T3CA928
T3CA924
T3CA228
T3CA922
T3CA992
T3CA998
T3CA224
Btuh sEEr sHr EEr ref.
WLHA09+WLHA24
WLHA09
41,000
27,000
34,000
39,000
43,000
41,000
32,000
30,000
36,000
46,000
13
13
13
13
13
13
13
13
13
13
.77
.80
.71
.77
.75
.74
.74
.77
.80
.72
11.9 R22
11.7 R22
11.7 R22
11.9 R22
11.8 R22
11.8 R22
11.8 R22
11.9 R22
11.8 R22
11.7 R22
WLHA12
WLH09A+WLHA24
WLHA09+WLHA12+WLHA24
WLHA12+WLHA24
WLHA09+WLHA12
WLHA09+WLHA12
WLHA09+WLHA24
WLHA12+WLHA24
systEm options WITH t4CA top disCHArGE
Wall Unit(s)
WLHA09
C o n d e n s e r
Btuh sEEr sHr EEr ref.
T4CA9999 36,000
T4CA2222 45,000
T4CA9222 42,000
T4CA9992 38,000
T4CA9922 41,000
13
13
13
13
13
.80
.73
.71
.71
.73
11.8 R22
11.7 R22
11.8 R22
11.8 R22
11.9 R22
WLHA12
WLHA09+WLHA12
WLHA09+WLHA12
WLHA09+WLHA12
WLCA/WLHA High Wall Evaporator
38
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.
• 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.
• Any damages to person or property of whatever kind, direct or indirect, special or
consequential, Whether resulting from use or loss 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
39
WLCA/WLHA High Wall Evaporator
Emi’s HiGH EffiCiEnCy prodUCt LinE
EVAporAtors
WLCA/WLHA
CACB
High Wall Evaporator
Cassette Evaporator
CondEnsE
S1C
Phone: 1-800-228-9364
Fax: 1-800-232-9364
5780 Success Drive,
Rome, NY 13440
|