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Marvair GAA A/C w/Gas Heat I&O Manual
06/2023 Rev.5
Distorted flame or yellow tips of the natural gas flame or long yellow tips on LP gas flames may be caused
by one or more of the following:
1. Lint or dirt inside the burner or burner ports,
2. Lint or dirt at the air inlet between the burner and the manifold pipe, or any obstruction over the
burner plate.
If any of these are visible, turn the unit off and use a vacuum or a soft brush to clean the affected areas.
7.9 Burner
Inspect the burners at least once a year, prior to each heating season, for rust, water damage or dust accumula-
tion. The burner should be replaced if rust or water damage is present. Dust should be removed if present.
7.10 Combustion Air Inlet and Outlet
Visually inspect both the combustion air inlet and gas outlet at least once a year, prior to the heating season,
to make sure that there is no build up of soot, debris or dirt. If required, clean to maintain adequate air flow.
Service reminder!
Always call a qualified service technician if the unit is not working properly. Before calling, check the
following to be sure service is required:
1. Be sure the electrical disconnect is ON.
2. Check room thermostat for proper setting.
3. Replace any blown fuses or reset circuit breakers.
4. Gas valve must be ON.
5. Air filters should not be plugged, limiting air flow.
6. Make sure all service panels are in place.
7.11 Venting of the Furnace
The Marvair GAA wall mounted air conditioner with gas heat furnace is a Category I furnace, i.e., a cen-
tral furnace which operates with a non-positive vent static pressure and with a flue loss not less than 17%.
The furnace is fan assisted. The installation of the furnace vent must be in accordance with the National
Fuel Gas Code (NFGC), ANSI Z223.1-2000/NFPA 54-2002, and /or Section 7 and Appendix C of the CSA
B149.1-00, National Standard of Canada, Natural Gas & Propane Installation Code; the local building
codes; furnace and vent manufacturer’s instructions.
WARNING : CARBON MONOXIDE POISONING, FIRE, AND EXPLOSION HAZARD
Failure to properly vent this furnace could result in death, personal injury and/or property damage. Read and
follow all the instructions in this section.
AVERTISSEMENT
DANGER D’EMPOISONNEMENT AU MONOXYDE DE CARBONE,
D’INCENDIE OU D’EXPLOSION
Une mauvaise ventilation de cette chaudière peut entraîner blessures graves ou mortelles et/ou dégâts
matériels. Lisez et respectez toutes les instructions dans cette section.
7.12 Clearances
Maintain 18” clearance between the vent hood and anything that would restrict or impede air flow from
the hood. The intake of the combustion air is thru louvers located on the side of the wall mounted air
conditioner with gas heat furnace. Maintain 19” clearance between the louvers and anything that would
restrict or impede air flow into the louvers.
