American Water Heater ABCG3 - Manual (Page 8)

8
deep, with length and width at least 2" greater than the diameter
of the heater and must be piped to an adequate drain. The pan
must not restrict combustion air flow.
LEVELING
If the unit is not level, insert the bolts which were used in crating
into the legs to correct this condition.
CLEARANCES
These heaters are approved for installation on combustible
flooring (with Leg Kit 9003425205) in an alcove when the
minimum clearance from any combustion construction are
followed as indicated in figure 5 and Table 4.
In all installations the minimum combustible clearances from
vent piping shall be 6" (152mm). Vent piping passing through a
combustible wall or ceiling must be a continuous run (no joints)
and retain the 6" (152mm) clearance unless an approved
reducing thimble is used.
A service clearance of 24" (610mm) should be maintained from
serviceable parts, such as relief valves, flue baffles, thermostats,
cleanout openings or drain valves.
The units are approved for installation with side, rear and ceiling
clearances as indicated below:
MINIMUM CLEARANCES TO COMBUSTIBLES IN INCHES (mm)
MODEL ”A” ”B” ”C” ”D”
RIGHT LEFT BACK CEILING
SIDE SIDE
BCG370T1205NOX 2” (51mm) 2” (51mm) 2” (51mm) 12” (305mm)
BCG380T1506NOX 2” (51mm) 2” (51mm) 2” (51mm) 12” (305mm)
BCG3100T1806NOX 2” (51mm) 2” (51mm) 2” (51mm) 12” (305mm)
BCG3100T1996NOX 2” (51mm) 2” (51mm) 2” (51mm) 12” (305mm)
(A)BCG3100T2006NOX 2 ” (51mm) 2” (51mm) 2” (51mm) 12” (305mm)
(A)BCG3100T2506NOX 2” (51mm) 2” (51mm) 2” (51mm) 12” (305mm)
(A)BCG3100T2756NOX 2” (51mm) 2” (51mm) 2” (51mm) 12” (305mm)
(A)BCG385T3106NOX 3” (76mm) 3” (76mm) 3” (76mm) 12” (305mm)
(A)BCG385T3666NOX 6” (152mm) 6” (152mm) 6” (152mm) 12” (305mm)
(A)BCG385T3906NOX 3” (76mm) 3” (76mm) 3” (76mm) 12” (305mm)
TABLE 4
CLEARANCES TO NONCOMBUSTION CONSTRUCTION
MODEL ”A” ”B” ”C” ”D”
RIGHT LEFT BACK CEILING
SIDE SIDE
BCG370T1205NOX 0 0 0 12” (305mm)
BCG380T1506NOX 0 0 0 12” (305mm)
BCG3100T1806NOX 0 0 0 12” (305mm)
BCG3100T1996NOX 0 0 0 12” (305mm)
(A)BCG3100T2006NOX 0 0 0 12” (305mm)
(A)BCG3100T2506NOX 0 0 0 12” (305mm)
(A)BCG3100T2756NOX 0 0 0 12” (305mm)
(A)BCG385T3106NOX 6” 6” 6” 12” (305mm)
(152mm) (152mm) (152mm)
(A)BCG385T3666NOX 0 0 0 12” (305mm)
(A)BCG385T3906NOX 0 0 0 12” (305mm)
TABLE 5
HARD WATER
Where hard water conditions exist, water softening or the threshold type
of water treatment is recommended. This will protect the dishwashers,
coffee urns, water heaters, water piping and other equipment.
See MAINTENANCE section for details of tank cleanout procedure.
AIR REQUIREMENTS
REFER TO THE CURRENT EDITION OF THE "NATIONAL FUEL
GAS CODE" ANSI Z223.1/NFPA 54.
KEEP APPLIANCE AREA CLEAR AND FREE OF COMBUSTIBLE
MATERIALS, GASOLINE AND OTHER FLAMMABLES, VAPORS AND
LIQUIDS.
DO NOT OBSTRUCT THE FLOW OF COMBUSTION OR
VENTILATING AIR.
WARNING
FOR SAFE OPERATION PROVIDE ADEQUATE AIR FOR
COMBUSTION AND VENTILATION. AN INSUFFICIENT SUPPLY OF
AIR WILL CAUSE RECIRCULATION OF COMBUSTION PRODUCTS
RESULTING IN AIR CONTAMINATION THAT MAY BE HAZARDOUS
TO LIFE. SUCH A CONDITION OFTEN WILL RESULT IN A YELLOW,
LUMINOUS BURNER FLAME, CAUSING CARBONING OR SOOTING
OF THE COMBUSTION CHAMBER, BURNERS AND FLUE TUBES
AND CREATES A RISK OF ASPHYXIATION.
ILLUSTRATION OF MINIMUM COMBUSTIBLE CLEARANCES IN AN ALCOVE - FIGURE 5