Magic-Pak EWC V Series Manuale utente
507390-01 Page 1 of 5Issue 1733
Save these instructions for future reference
(P) 507390-01
*P507390-01*
Manufactured By
Allied Air Enterprises LLC
A Lennox International, Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
This manual must be left with the homeowner for future reference.
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional installer (or
equivalent), service agency or the gas supplier.
WARNING
For your safety, do not store or use gasoline or other
ammable vapors and liquids in the vicinity of this or any
other appliance. Such actions could result in property
damage, personal injury, or death.
WARNING
These units are not approved for mobile home
applications. Such use could result in property damage,
personal injury, or death.
WARNING
Installation shall be made in accordance with the
requirements of the local utility and other authorities
having jurisdiction, or with the National Fuel Gas
Code, ANSI Z223.1 (latest edition) and the National
Electrical Code. Any alteration of internal wiring will void
certication and warranties.
CAUTION
INSTALLATION INSTRUCTIONS
EWC V-SeriesTM Models
Installation and servicing of air conditioning equipment
can be hazardous due to internal refrigerant pressure
and live electrical components. Only trained and
qualied service personnel should install or service
this equipment. Installation and service performed by
unqualied persons can result in property damage,
personal injury or death.
WARNING
Page 2 of 5 507390-01Issue 1733
Figure 1. EWC Installation
Plywood
28" Min.
Wall Sleeve
Vibration Isolating Material
FLO
O
R
6 x 22 Minimum Opening
to Align with Return Air
Opening in Unit.
""
Installation
Installation shall be made in accordance with local utility
requirements and any other authorities having jurisdiction.
General
The EWC V-Series™ unit is a self-contained electric
heating and cooling unit. This unit has been examined for
compliance with Canadian Standards Association CAN/
CSA-C22.2 No. 236 (latest edition) and Underwriters
Laboratories UL 1995. This unit is also in compliance
with A.M.R.I. Performance Standard 390 and Canadian
Standard CAN/CSA-C656 (latest edition) Performance
Standard in effect at the time of manufacture. Any
alterations of internal wiring will void these listings and
warranties.
Inspection
This unit is shipped in one package, completely assembled
and wired. The drain tubing is in the cooling compartment
behind the lter access panel.
If any damage is found, proper notation should be made
on the carrier’s freight bill. Damage claims should be led
with the carrier at once. Check the rating plate to conrm
heating and cooling capacities.
NOTE: Be sure to remove the chassis hold down brackets
from the outdoor side of unit before installation. These
brackets are located below the louver panels.
Location
The unit is approved for indoor installation only. It must not
be installed completely outside. Duct connections as well
as service access must be inside the building. The interior
portions of the unit may be surrounded by a closet with
clearances to combustible material held to 0” at sides, 2”
top, and 0” front and plenum. The oor may be combustible.
The grille side of the unit may be ush with, or extend
beyond, the face of the exterior wall, but should not be
recessed more than 2” from the face of the building and
should not be obstructed with trees, landscape materials,
or building structure.
If the unit is to be enclosed, provisions should be made
allowing access to the indoor side of the unit for changing
lters and for inspection. At least 29” of unobstructed space
should be provided in front of the indoor side, whether
enclosed or not, to permit removal of the cooling chassis
should repairs or inspection be required.
507390-01 Page 3 of 5Issue 1733
Installing without a Wall Sleeve
Provide an opening in an outside wall with minimum
dimensions 28” side and 43-1/4” high (see Figure 1). Local
ordinances may require a steel lintel to support the wall
above the opening. This opening must be square in all
corners.
Provide support under the unit, inside the building. Make
sure that the inside support does not block the return air.
The unit should be installed level or pitched slightly to the
outside of the building so that rain water will drain from the
unit.
The use of resilient cork or rubber material between the
unit and the supports is recommended to minimize any
transmission of noise or vibration.
Seal the space between the unit and the building opening
using a non-hardening caulking compound. The seal must
be weather-tight to prevent entrance of moisture and water
into the building. Make sure that the drain holes in the base
are not plugged with caulking.
Installing with a Wall Sleeve
Install the wall sleeve in accordance with instructions
furnished with the sleeve.
Make sure that the gaskets attached to the sleeve are not
damaged.
Seal the space between the wall sleeve and the building
opening using non-hardening caulking compound. This
seal must be watertight.
Assure that the unit is completely seated against the
gaskets on the wall sleeve.
Slide the unit into the sleeve. When properly nested, the
angle on top of the unit should line up with the top ange of
the sleeve and should almost touch. Fasten the unit to the
sleeve with ve screws furnished with the sleeve.
The sleeve is not intended as the sole support for the
unit. An additional support must be provided near the
return opening on the unit for adequate support. The
use of vibration isolation material between the unit and
the support is recommended.
CAUTION
Condensate Drain
To install the condensate line, connect one end of the
plastic tube over the 5/8” O.D. tting in the center of the
condensate pan. Connect the other end to the drain tube
running to the open trap (see Figure 2).
The drain line should pitch gradually downward at least 1”
per 10 feet of horizontal run to the open drain trap.
Be certain that the plastic drain tube has free drainage and
is not crimped or attened at any bend.
Test drainage by pouring water into the drain pan under the
evaporator and see that it is removed rapidly through the
drain tubing.
The plastic drain connection is provided so that it may
be disconnected from the permanent drain tubing in
the building without unsoldering in the event it become
necessary to remove the refrigeration chassis assembly.
Figure 2. EWC Drain Installation
Drain Pan
Open Drain Trap
Return
Air Duct
To Open
Drain Trap
Alternative
Method
5/8
" I . D.
Plastic Tube
(Supplied)
Top of Drain Tube
Must be Below
Bottom of Drain Pan
Drain Tube - Pitch 1"
for every 10 ft.
(Field Supplied)
Electrical Connections
All supply wiring should be done in accordance with
the National Electric Code, or with local codes, where
they prevail. Any alternation of internal wiring will void
certication and warranty.
NOTE: Units are factory wired for a 230-volt power supply.
If power supply is 208 volts, it will be necessary to change
a wire connection on unit transformer from 240V terminal
to 208V terminal as shown on the wiring diagram.
The rating plate indicates the operating voltage, phase,
ampacity, and maximum circuit protection. Minimum
operating voltage of the 208-230 volt model is 197 volts.
Units must never be installed where voltage exceeds 10%
of voltage indicated on the rating plate.
Failure of the compressor as a result of operation on
improper voltage voids the compressor replacement
warranty.
A separate electric line for each circuit should be run
through a separate fused disconnect, from the main house
panel to the supply terminal block located in the unit.
Thermostat
Install the thermostat according to directions furnished
with it. Select a location which will measure true air
temperature. Locate on an inside wall, away from drafts, in
a room having the greatest exposure.
Connect the wires to the terminal block on the unit following
the wiring diagram attached to the unit.
Page 4 of 5 507390-01Issue 1733
Air Filter
All indoor return air must be ltered before it passes through
the evaporator coil. A permanent-type lter is furnished
with the unit, located directly in front of evaporator coil.
Removing the front panel permits access to the lter.
The lter should be cleaned at least once during each of
the heating and cooling seasons and more frequently if
unusual dusty conditions are encountered. To clean the
permanent lter, shake the lter to remove excess dirt
and/or use a vacuum cleaner. Wash the lter in soap or
detergent water and re-install after lter is dry.
The lter supplied need not be oiled after washing.
If an installation is made in which it is more desirable to
mount the lter exterior to the unit, in the return duct work
or otherwise, the permanent lter supplied can be used
or a disposable lter may be used. If a disposable lter is
used, the minimum area required is as shown in Table 1.
Table 1. Minimum Required Surface Area for
Disposable Filters
Cooling Chassis Model
Number
Filter Area
(sq. in.)
EWC 12 300
EWC 18 480
EWC 24 480
EWC 30 480
Ductwork
Provide ductwork sufciently large to handle the larger
of the air volumes for heating or cooling provided by this
model.
Connect supply duct to top of unit using canvas connection
or other exible connection to prevent noise transmission
into the duct system.
To connect the return duct to the unit, use a straight piece
of duct 22” wide by 6” deep.
Insert the duct into the opening in the bottom of the unit
and ange the duct over the existing anges around the
opening inside the unit. Make sure that all sides of the duct
are anged over to permit removal of the cooling chassis if
required. Use a exible connection to attach the remainder
of the return ductwork.
Operation
Operation of this unit is automatic and will provide heating
or cooling depending on the setting of the thermostat.
Heating
1. Turn on the main power supply.
2. Set the thermostat system switch to “HEAT”.
3. Set the thermostat heating scale to the temperature
desired.
Cooling
1. Set the thermostat system to “COOL”.
2. Set the thermostat cooling scale to the temperature
desired.
Blower Operation
Continuous operation of the air handling blower will be
obtained if the thermostat fan switch is set to “ON”.
With the thermostat switch set to “AUTO”, the air handling
blower will cycle corresponding with the thermostat cycling.
To Shut Down Unit
For temporary or short periods of shutdown, set the
thermostat system switch to “OFF”. For a prolonged period
of shutdown, set the thermostat system switch to “OFF”
and turn off the electrical power supply.
Blower
The unit contains a direct drive, multi-speed blower motor.
The proper speed has been set at the factory. Refer to the
wiring diagram on the unit for proper wiring connections.
Adjustments
No adjustments are required or should be attempted
regarding any of the components of the cooling chassis
and electric heating section.
The unit should be checked to see that none of the wiring is
loose or missing. The plug-in electrical connector between
the cooling chassis and the main control compartment
should be checked to make sure that the plug is rmly
seated and none of the wires are loose.
507390-01 Page 5 of 5Issue 1733
Maintenance
Cooling Chassis
The refrigeration system contained in the cooling chassis
normally requires no maintenance since it is a closed self-
contained system. Periodic maintenance is limited to:
Cooling Chassis is charged with R410A refrigerant.
• Cleaning the evaporator air lter. Follow the directions
noted on the lter and label attached to the access
panel.
• Cleaning the condenser coil if covered with foreign
material such as lint, leaves, or other obstructions.
• Motors are permanently lubricated and do not normally
require re-oiling.
If servicing or major repairs are required, the complete
cooling chassis can be removed from the unit. Proceed as
follows:
1. Shut off the main power supply.
2. Remove the lter access panel and the panel covering
the cooling controls.
3. Remove the drain hose from the drain pan.
4. Disconnect the plug-in electrical connectors. Do
not separate the connector by pulling on the wires;
instead, grasp the connector handle.
5. Disconnect the two power leads from the contactor.
(Leads come from the Grommet in the unit partition.)
6. Remove the screws from the panel directly in front of
the blower and remove the panel. Also remove the
additional screws located near the top edge of the
control panel.
7. Slide out the chassis being careful not to damage any
seals or parts.
To re-install the chassis, reverse the procedure outlined
above. Be sure that the chassis is inserted as far back as
it will go before replacing the screws. Side anges on the
chassis must be engaged with the sealing strips on the
unit sides to prevent water and air leakage. Reconnect the
plug-in connector, reconnect the power and four leads,
and replace both access panels before turning on the main
electric power supply.
Heating Section
No maintenance is necessary on the electric heating
elements.
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