EMI AmericaSeries WLH09 User manual

HigH EfficiEncy DuctlEss split systEm
Wlc/WlH HigH WAll EVApORAtOR
P/N# 240006021 Rev.A [05/08]
Enviromaster International LLC
5780 Success Dr.
Rome, NY 13440
www.enviromaster.com
instAllAtiOn, OpERAtiOn AnD mAintEnAncE mAnuAl
An ISO 9001-2000 Certied Company
WLC/WLH
stRAigHt cOOl/HEAt pump*
Nominal Circuit Capacities:
WLH 9,000, 12,000, 18,000, 24,000 Btuh*
and WLC (only) 30,000 & 36,000 Btuh
* Heat Pump only available for 9,000-24,000 Btuh units.

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3
WLCA/WLHA High Wall Evaporator
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
WLC/WLH HIGH WALL HIGH EFFICIENCY
EVAPORATOR
Shipping Damage MUST be Reported to the Carrier IMMEDIATELY!!!
Examine the carton for signs of damage if any is evident open packaging and
check the unit for shipping damage.
This manual is intended as an aid to a qualied service personnel for proper installation,
operation, and maintenance of EMI AmericaSeries high efciency evaporators. 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 re, electrical shock, property damage, personal injury, or death.
SAFETY INSTRUCTIONS
Read all instructions before us-
ing 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]
Tampering with the EMI America-
Series evaporator is dangerous
and may result in serious injury or
death. Tampering voids all warran-
ties. Do not attempt to modify or
change this unit in any way.
TO THE INSTALLER
(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

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WLCA/WLHA High Wall Evaporator 4
CONTROLS AND COMPONENTS
Continued
PRODUCT DESCRIPTION
TheAmericaSeriesWLC/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
efciency 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 5 kW of supplemental heat.
This American-made evaporator offers
ease of installation, operation, and service.
It can be matched with EMI’s S1C/S1H
09-24 and S1C 30-36 Btuh Single-Zone
Condensing Units, the S2C 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.
• 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 efciency (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
stratication.
• SelectableFahrenheit(°F)or Celsius
(°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 indenite
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 lter should be
changed according to the selected time.
• Motorized supply louver with optional
sweep or six stationary settings.
• Infer red compatible control allows
use of optional IR hand held controller.
Note:Unit mounted controls are
fully functional without the handheld
remote.
CONTROLS AND COMPONENTS
Note: If the control is congured for
unit mount control do NOT connect
a wall thermostat to the unit.
• Large LCD Backlit Display
• Single unit mounted control pack-
age, congurable 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.

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5
WLCA/WLHA High Wall Evaporator
ITEMS FOR CONSIDERATION
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.
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)
• 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 ow
protection
Cabinet Features:
• Durable ABS plastic cabinet with a
galvanized steel sub-chassis.
• Easily accessible, washable, reusable,
nylon mesh lter.
• 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 ns.
• 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 lter” display feature and
selectable Fahrenheit (Fº), or Celsius
(Cº) temperature scale.
WLC/WLH CONTROLS AND COMPONENTS
Continued
OPTIONAL EQUIPMENT
• Condensate pump (eld 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)
IMPORTANT: Check equipment for damage
prior to installation, if damaged contact the
wholesale distributor.
CEILING
WALL
WALL
4” Minimum
10”
Minimum
6”
Min.
NOTE: Unit mounted controls are fully func-
tional without the remote.
NOTE: If the control is congured for unit
mount control do NOT connect a wall ther-
mostat to the unit.

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WLCA/WLHA High Wall Evaporator 6
WLC/WLH HIGH WALL UNIT MOUNTING
WLC/WLH MOUNTING PREPARATION
1. After determining the best location for
the unit, use the cardboard template
provided in the packaging.
2. Mark where the piping, electrical wiring
and condensate drain should penetrate
the wall.
NOTE: Piping maybe roughedin before
wallboard or panels are placed in new
construction. PVC pipe (3” or 4” I.D.)
may be used as a pipe chase.
*NOTE:
UNIT MUST BE INSTALLED
4 - INCHES DOWN FROM CEILING
NOTE: If excessive noise or vibration is
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.
3. Determine the appropriate hole size and
cut through the wall.
Note: The wall hanging bracket slot is NOT
located in the center 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 ts properly.
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 qualied service tech-
nician is recommended.
4. Use the supplied wall bracket. For
shipping purposes, the wall bracket is
fastened to the back of the unit.
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.
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.
Remove and discard
these screws
Mounting
slot
Slot for piping

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7
WLCA/WLHA High Wall Evaporator
Electrical Wiring Site Preparation
All wiring should be in accordance with the
NationalElectricCode (NEC)and thelocal
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
2. Lift and remove the front grill to expose
the third screw.
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.
Locate Electrical Wiring
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.
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. 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
Helpful Hint:
Prior to re-
moving the
end cap
and bot-
tom use
a small
board to
prop the unit away
from the wall.
Board
WLC/WLH HIGH WALL EVAPORATOR INSTALLATION INSTRUCTIONS

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WLCA/WLHA High Wall Evaporator 8
Note: All low Volt interconnect
wiring must be at least 18 AWG.
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.
4. To access High and Low wiring remove
the screw on the front of 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.
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: Inadditiontothe
“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.
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-
tionbetweenthe indoorandoutdoorunitto
provide power to the defrost control board
in the condenser. (See Figure 1B)
Units With Or Without Heat
Low Voltage
Connections
Ground
L1
L2
Be sure to keep any un-used wires
insulated with a wire nut or crimp.
WLC/WLH HIGH WALL EVAPORATOR INSTALLATION INSTRUCTIONS
! !
WARNING

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9
WLCA/WLHA High Wall Evaporator
LOW VOLT INTERCONNECT WIRING FOR UNIT MOUNTED CONTROLS
Remote Thermostat Controls
Heat Pump Connection
Unit Mount Controls
Two-Stage Heating
When connecting to a defrosting heat
pump, such as EMI model S1H, indoor
units with electric heat utilize ve intercon-
necting low Volt wires between the indoor
and outdoor units.
Units With Or Without Heat Continued
Low Volt interconnect diagram intercon-
nect diagram Figure 1A and Figure 1B
for unit mounted 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.
NOTE: All low Volt interconnect
wiring must be at least 18 AWG.
Figure 2 A
Figure 1A Figure 1B
Unit Mount Controls
Straight Cool
Choosing a Remote Wall Mounted
Thermostat: See “Wall Thermostat
Control” section page 21.
NOTE:For remote thermostat mode
the key pad will have limited opera-
tion - Sequence of Operation - Wall
Mounted Thermostat, page 21.
WLC/WLH HIGH WALL EVAPORATOR INSTALLATION INSTRUCTIONS

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WLCA/WLHA High Wall Evaporator 10
Figure 2 C
Figure 2 B
Heat Pump Connection Remote Thermostat – Two-Stage Heating
Low Volt interconnect diagram interconnect diagram Figures 2A, 2B & 2C for remote wall thermostat control.
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 S1H.
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.
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.
Once certain all electrical connec-
tions are made replace control box
cover.
NOTE: If the control is con-
gured for unit mount con-
trol do NOT connect a wall
thermostat to the unit.
Control box Replace screw
WLC/WLH HIGH WALL EVAPORATOR INSTALLATION INSTRUCTIONS