GF-5050
Innovation Series & ReCon Water Heater
TAG-0043_0Q
Venting and Combustion Air Guide
Page
10
of
39
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
12/01/2016
•
Non-motorized louvers and grilles must be fixed in an open
position.
•
Minimum screens mesh size shall not be smaller than ¼
inch (6.4 mm) mesh.
6. Air intakes must not be located in the proximity of garages, industrial and medical hood venting,
loading docks or refrigerant vent lines. Boilers must not be installed in the proximity of activities
that generate dust if that dust can enter the boiler intake. Boilers must be located to prevent
moisture and precipitation from entering combustion air inlets.
7. If a water heater is used, temporarily, to provide heat during ongoing building construction or
renovation, accumulated drywall dust, sawdust and similar particles can:
•
Accumulate in the unit’s combustion air intake and block combustion air flow
•
Accumulate over the burner surface and restrict flow of air/fuel mixture
In these situations, AERCO requires that a disposable air intake filter be installed, temporarily,
above the combustion air inlet. Air filters may be required year-round in instances in which dust or
debris can enter the combustion air tube. Consult the Operations and Maintenance Manual for
details.
8. Combustion air temperatures as low as -30°F (-34°C ) can be used without affecting the integrity
of the equipment; however, the combustion settings may require adjustment to compensate for
site conditions.
2.2. COMBUSTION AIR FROM WITHIN THE BUILDING
Wherever combustion air originates from in the building, it must be provided to the equipment room
from two permanent openings to an interior room (or rooms). Openings connecting indoor spaces
shall be sized and located in accordance with the following:
•
Each opening shall have a minimum free area of 1 inch
2
per 1,000 BTU/hr (654 mm
2
/0.29 kW)
of total input rating of all appliances in the space, but not less than 100 inch
2
(0.06 m
2
).
•
One opening shall commence within 12 inches (305 mm) of the top of the enclosure, and one
opening shall commence within 12 inches (305 mm) of the bottom. (See Figure 2).
WARNING
