Nordyne R4G(M, N) - 090, (*)R4GM-090, (*)R4GN-090, (*)R4GM-120 Owner's Manual

USER’S INFORMATION MANUAL

(*)R4G(M,N) - 090/120 Series

Single Package Gas Heating /Electric Cooling Rooftop Unit

Single Package Gas Heating/Electric Cooling Rooftop Unit

IMPORTANT

Read this owner information thoroughly before attempting to operate or maintain this unit to
become familiar with the capabilities and use of your appliance. Keep this literature where you have
easy access to it in the future. If a problem occurs, check the instructions and follow recommendations
given. If these suggestions don’t eliminate your problem, call your NORDYNE Servicing Contractor
(Service PRO).

Any additions, changes, or conversions required in order for the appliance to satisfactorily meet the
application needs must be made by a qualified installer, service agency, or the gas supplier using
factory specified and approved parts.

FOR YOUR SAFETY

WARNING: 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.

— Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any
other appliance.

— Installation and service must be performed by

a qualified installer, service agency, or the
gas supplier.

— 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 your gas supplier,
call the fire department.

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GENERAL INFORMATION

This gas heating/electric cooling
unit has been designed and built
to provide many years of safe
and dependable comfort, provid­ing it is properly installed and
maintained. With regular main­tenance, this unit will operate sat­isfactorily year after year. Abuse,
improper use, and/or improper
maintenance can shorten the life
of the appliance and create haz­ards for you. Please read this
manual carefully to familiarize
yourself with operation, mainte­nance, and safety procedures for
this unit.

A regular service and maintenance
schedule should be established to
ensure efficient and safe operation
of the unit. Contact your dealer for a
periodic unit inspection by a qualified
service technician.

WARNING:

!

To avoid possible equipment
damage, fire, or death, the
following instructions must
be observed regarding unit
location, combustion air
requirements, and operation
procedures.

Gas Heating/Electric Cooling
Unit Location

The area around the gas heating/
electric cooling unit and the vicinity
of any other gas appliances must
be kept clear and free of
combustible materials, gasoline,
and other flammable vapors and
liquids. Do not store or use
flammable items such as paint,
varnish, or strippers in the vicinity
of the unit.

Do not use the area around the
unit as a storage area. This area
must be kept clear and clean. The
unit must also be kept clear of
loose or exposed insulation
materials. Examine the unit's area
when it is installed or when
insulation is added, since some
insulation materials may be
combustible.

Do not use this appliance if any
part has been under water.
Immediately call a qualified service
technician to inspect the unit and
to replace any part of the control
system and any gas control which
has been under water.

Familiarize yourself with the
controls that shut off the gas and
electrical power to the unit. If the
unit is to be shut down for an
extended period of time, turn off
both the gas and electrical power.
For your safety always turn off
both the gas and electrical power
before performing service or
maintenance on the furnace.

Combustion Air Supply

The gas heating/electric cooling
unit needs an adequate supply of
combustion and ventilation air for
proper and safe operation. Do not
block or obstruct air openings on
the unit or air openings supplying
the area where it is installed.

If the unit is operated with
inadequate combustion air supply,
the flame roll-out control switch
located above the burners will
open, turning off the gas supply to
the burners. The flame roll-out
control is a manual-reset device.
DO NOT install a jumper wire
across this switch to defeat its
function. DO NOT reset the control
without identifying and correcting
the fault condition which caused
the control to trip. If this switch

must be replaced, use only the
factory specified replacement part.

CAUTION:

!

Combustion air must not be
drawn from a corrosive
atmosphere.

To maximize heat exchanger life,
the combustion air must be free of
chemicals which form corrosive
acidic compounds in the combus­tion gases. Some examples of
these chemicals are chlorine, fluo­rine, and sulphur. Some common
sources of these chemicals are
detergents, bleaches, aerosol
sprays, cleaning solvents, and a
wide variety of commercial and
household products.

Ductwork

WARNING:

!

Failure to prevent products
of combustion from being
circulated into the occupied
space can create potentially
hazardous conditions in­cluding carbon monoxide
poisoning that could result
in personal injury or death.

The duct connections must be
physically sound and sealed to the
unit's casing to prevent products
of combustion from entering the
occupied space.

The return air and circulating air
ductwork must not be connected
to any other heat producing device
such as a fireplace insert, stove,
etc. Doing so may result in fire,
explosion, personal injury, carbon
monoxide poisoning, or property
damage.

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