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Marvair GAA A/C w/Gas Heat I&O Manual
06/2023 Rev.5
• Marvair GAA air conditioners with gas heat is only to be installed on the exterior of a building.
• Never test for gas leaks with an open flame. Use a commercially available soap solution made spe-
cifically for the detection of leaks to check all connections, as specified in Gas Supply and Piping,
Final Check check of these instructions.
• Always install furnace to operate within the furnace's intended temperature rise range with a duct
system which has an external static pressure within the allowable range, as specified in Porting and
Ductwork section of these instructions and on the data plate.
• Supply ducts and the return air shall be handled by a duct ( s ) sealed to the furnace casing as specified
in Porting and Ductwork.
• Seal around supply and return air ducts.
• Install correct filter type and size.
3.1 Safety Rules
Your unit is built to provide many years of safe and dependable service providing it is properly installed
and maintained. However, abuse and / or improper use can shorten the life of the unit and create hazards
for you, the owner.
A. The U.S. Consumer Product Safety Commission encourages installation of carbon monoxide
alarms. There can be various sources of carbon monoxide in a building or dwelling. The sources
could be gas- fired clothes dryers, gas cooking stoves, water heaters, furnaces, gas-fired fireplaces,
wood fireplaces, and several other items.
Carbon monoxide can cause serious bodily injury and / or death. Carbon monoxide or “CO” is a
colorless and odorless gas produced when fuel is not burned completely or when the flame does
not receive sufficient oxygen.
Therefore, to help alert people of potentially dangerous carbon monoxide levels, you should have
a commercially available carbon monoxide alarm that is listed by a nationally recognized testing
agency in accordance with Underwriters Laboratores, Inc. Standard for Single and Multiple Station
Carbon Monixide Alarms, ANSI / UL 2034 or the CSA 6.19-01 Residential Carbon Alarming
Devices installed and maintained in the building or dwelling concurrently with the gas-fired
furnace installation ( see Note below ). The alarm should be installed as recommended by the alarm
manufacturer’s installation instructions.
B. There can be numerous sources of fire or smoke in a building or dwelling. Fire or smoke can
cause serious bodily injury, death and / or property damage. Therefore, in order to alert people of
potentially dangerous fire or smoke, you should have fire extinguisher and smoke alarms listed by
Underwriters Laboratories installed and maintained in the building or dwelling ( see note below ).
NOTE:
Marvair does not test any alarms and makes no representations regarding any brand or
type of alarms.
C. To ensure safe and efficient operation of your unit, you should do the following:
1. Thoroughly read this manual and labels on the unit.
This will help you understand how your
unit operates and the hazards involved with gas and electricity.
2. Do not use this unit if any part has been under water.
Immediately call a quality service
agency to inspect the unit and to replace any part of the control system and any gas control
which has been under water.
3. Never obstruct the vent grilles, or any ducts that provide air to the unit.
Air must be provided
for proper combustion and ventilation of flue gases.
