Lennox MGE4 Series Guide

506417-01 Page 1 of 4Issue 0941
Congratulations...
...youhaveoneofthemostmoderngasheatingappliancesmade.
Your unit has been carefully selected to keep you warm and
comfortable during the winter months. It will deliver superb
performance with only minimal help from you. It will also keep you
comfortably cool during hot summer days and nights.
To keep your operating cost low and to eliminate unnecessary
servicecalls,wehaveprovidedafewguidelines.Theseguidelines
will help you understand how your appliance operates and how to
maintain it so you can get years of safe and dependable service.
Certified Efficiency Ratings
The Gas Appliance Manufacturers Association (GAMA) symbol
verifies that Annual Fuel Utilization Efficiency (AFUE) ratings for
our gas furnaces have been derived from U.S. Government
standard tests.
The E.T.L. Testing Laboratories, Inc. symbol on your appliance is
your assurance that your furnace design meets nationally
recognized standards for safety and performance.
If the information in this manual is not followed exactly, a fire or explosion may result causing property
damage, personal injury, or loss of life. For assistance or additional information, consult a qualified
installer, service agency, or the gas supplier.
WARNING
Theunitarea mustbekeptclean andfree ofcombustible
materials, gasoline, and other flammable vapors and
liquids.
CAUTION
Manufactured By
Allied Air Enterprises Inc.
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
Save these instructions for future reference
*506417-01*
Do not block any portion of the exterior of the unit. The
flow of combustion and ventilation air must not be
obstructedfromentering thefurnaceandcondensercoil.
Donotpermitoverhangingstructuresorshrubstoobstruct
condenser air discharge, combustion air inlet, or vent
outlet.Such obstructionsmay causeactionswhich could
result in property damage, personal injury, or death.
WARNING
Should overheating occur or the gas supply fail to shut
off,turn offthemanualgasvalve totheappliance before
shutting off the electrical supply.
WARNING
USER’S INFORMATION MANUAL
MGE4 Series
Magic-Pak Thru-the-Wall Unit
– Do not store or use gasoline or other flammable
vaporsand liquids inthe vicinity ofthisor any other
appliance.
– What to do if you smell gas:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach the gas supplier, call the fire
department.
– Installation and service must be performed by a
qualified installer, service agency, or the gas
supplier.
WARNING: If theinformationin this manual
isnot followed exactly,afire or explosion may
result causing property damage, personal
injury, or loss of life.

Page 2 of 4 506417-01Issue 0941
Before operating, smellaround theappliance areaforgas.
Be sure to smell next to the floor because some gas is
heavier than air and will settle to the lowest point. Refer to
“What to do if you smell gas” on page 1 if the odor of gas
is present.
Use only your hand to turn the gas control knob; never use
tools. If the knob will not turn by hand, don’t try to repair it.
Calla qualifiedservicetechnician. Forceorattempted repair
may result in a fire or explosion.
Do not use this appliance if any part has been under water.
Immediatelycall aqualifiedservice technicianto inspectthe
appliance and to replace any part of the control system and
any gas control which has been under water.
General Information
YourmodelMGE4unithasallheatingandcoolingcomponents
self contained in one compact cabinet. It uses outside air for
gascombustionandtheproductsofcombustionareexhausted
bya powervent directlyto theoutside throughthe upperright
corner of the exterior grille. If your unit is located at ground
level or the exterior is on a balcony, you will able to observe
the flue products discharge area. On cold mornings during
the heating cycle you may notice a vapor emitting from the
discharge area. This is normal.
Depending on your local or state building codes, you will
have a power disconnect either adjacent to your unit or
locatedatyour mainelectricalpanel.Over-currentprotection
will be provided at this point. Have your builder, dealer, or
maintenance people show you how to turn the power on
and off for your Magic-Pak unit.
A field-supplied gas cock (valve) is located in the gas line
enteringthe frontof yourunit. Manuallyturn thehandle soit
is in a parallel position to the gas line. This is the “OPEN”
position.
Your unit is equipped with an energy saving, automatic,
intermittent ignition control. The burners are automatically
ignited at the beginning of each heating cycle and shut off
when each cycle is completed. Your unit does not have a
pilot requiring manual lighting.
Operating Your Furnace
Lighting Instructions
1. STOP! Read the previous safety information.
2. Turn off electrical power to the appliance.
3. Turn the thermostat to lowest setting.
4. Turnthe gasvalveknob to“ON” position(see Figure1).
5. Turn on electrical power to the appliance.
6. Set the room thermostat to the desired temperature. If
the thermostat “set” temperature is above room
temperature after the pre-purge time expires, main
burner will light.
To Shut Down
1. Turn off electrical power to the appliance.
2. Turn the gas valve knob to “OFF” position.
Temperature Control
Thereare manytypes andstyles ofthermostats.Yoursmay
look different from the one pictured in Figure 2. However,
almost all thermostats perform the same basic functions
described in the following section.
Gas Valve
Figure 1
ON
OFF
HONEYWELL
GAS
INLET
GAS
CONTROL KNOB
REGULATOR
ADJUSTMENT CAP
For your safety –
Read before operating
If you do not follow these instructions exactly, a fire or
explosion may result, causing property damage,
personal injury, or loss of life.
WARNING
This furnace is equipped with a direct ignition control.
Do not attempt to manually light the burners.
CAUTION
These units are not approved for mobile home
applications.
CAUTION

506417-01 Page 3 of 4Issue 0941
Thermostat Operation
There are two switches located on the thermostat. One
switchcontrols theheating andcooling functions.The other
switchisfor “FAN”operation, eithercontinuousor automatic.
On the thermostat is the temperature range for the heating
temperature and the cooling temperature desired.
To put the system into operation, push the switch to either
“HEAT” or “COOL” position.After you have chosen the type
ofoperation youdesire, movethe thermostatdialor leverto
selectthetemperature youwould likethesystemtomaintain.
Fan Operation
Youmaywishtoincreaseyourcomfortbysetting yoursystem
forcontinuous aircirculationof theindoor air.The fanswitch
on the thermostat permits you to do this.
With the switch in the “ON” position, the fan will operate
continuously.“AUTO”positiongives fanoperationonlywhen
the unit is in either heating or cooling.
Maintenance Of Your Unit
Thereareroutinemaintenance stepsyoushould taketokeep
your unit operating efficiently. This will assure longer life,
lower operating costs, and fewer service calls. Certain
service and maintenance procedures require the skill of a
trainedserviceperson whoutilizesspecialtools andtraining.
Personal injury can result if unqualified personnel attempt
those procedures.
Your unit should beinspectedand serviced at leastonce
per year by a qualified service technician.
Periodic Inspections
Your Magic-Pak is designed to give many years of efficient,
satisfactory service. However, the varied air pollutants
commonly found in most areas can affect longevity and
safety. Chemicals contained in everyday household items
such as laundry detergents, cleaning sprays, hair sprays,
deodorizers, and other products which produce airborne
residualsmay havean adverseaffectupon themetalsused
to construct your appliance.
Itis importantthatyou periodicallyinspectyour unit.Visually
inspect all flue product carrying areas of the furnace, the
vent-air intake system, main gas burners, and heat
exchanger. You will be able to make this observation by
removing the access panel located on the center portion of
thecabinet.Ascrewdriverisneededtoremove thispanel.A
flashlight will be useful. Make one inspection prior to the
beginning of the heating season and another half way
throughthe heatingseason. Should you observe unusual
amounts of rust, flakes, or other deposits, coatings, or
corrosion, it is important that you call your authorized
dealer at once to obtain a qualified service inspection.
Owner/User Maintenance
Should your living area be part of an apartment or
condominium complex, you are likely to have maintenance
personnelwho willprovideallnormal maintenancefunctions
to keep your unit operating at maximum efficiency. If you
are responsible for this maintenance, there are several key
steps you will need to perform. Your Magic-Pak unit will, in
mostcases,belocated behinda moveableopeningorcloset.
1. Filter Remove the access panel on the top of the
cabinet. Ascrewdriver is needed to remove this panel.
Thefilterisimmediatelybehindthis panelandcaneasily
be slid out of the side channels which keep it in place in
front of the indoor blower. The filter may be vacuumed
or preferably washed, then dried and replaced. This is
awashable filterthat willlastmany yearswhenproperly
cared for. When inserting the filter in the side channels,
make sure it does not touch the fins of the coil. Your
filter should be checked every 4 to 6 weeks.
2. Indoor Coil This coil must be clean at all times,
especiallyfor efficientcoolingperformance. Shouldany
lintor dirtcollecton thecoilfins, youcanusually remove
this accumulation using an ordinary vacuum cleaner
hosewith acrevicetool orbrushattachment.Be careful,
the coil fins are very fragile and are easily damaged.
3. Condensate Drain During cooling, the moisture
removed from indoors collects on the indoor coil, drops
tothe drainpanat thebottom ofthe coiland thendrains
away through a plastic hose connected to the stub at
the front of the drain pan. The condensate then drains
tothe unitbase pan.Make sure this drain connection
is kept open to keep condensate from overflowing
the pan.
Always shut off all power to the unit before attempting
any of the following maintenance procedures. Failure
to do so may result in personal injury.
WARNING
Figure 2
Thermostat
F
A
N
O
N
A
U
T
O
Fan SwitchSelector Switch
Cooling
&
Heating
Temperature
Setting
Room
Temperature
50
60
80
70
60
50
70
80

Page 4 of 4 506417-01Issue 0941
4. Outdoor Condensing Coil If your unit is located at
ground level where outdoor debris can collect on the
outdoor coil, you will need to periodically inspect and
clean this coil during the cooling season. Use of a
vacuumorhose isrecommended.Adirty coilwill cause
inefficientoperation oncoolinganditmay alsocontribute
tocooling service problems.Be careful,the coilfins are
very fragile and are easily damaged.
5. Blower and Fan Motors Theseare directdrive,sealed
bearing motors and do not require lubrication or owner
maintenance.Accessto thesemotorscanbe madeonly
when the entire cooling chassis is removed by your
authorized service person or dealer.
Since the entire cooling section of your unit is a factory-
sealed system, only your authorized service dealer should
be called to make any necessary repairs or adjustments.