Installation On Combustible Flooring; Hard Water; Air Requirements; Unconfined Space - Lochinvar CG 120 Installation Operation & Maintenance

ILLUSTRATION OF MINIMUM COMBUSTIBLE CLEARANCES IN AN ALCOVE
The following units are approved for installation with side, rear
and ceiling clearances as indicated below:
A
(RIGHT SIDE)
CG(N,L) 120070 1" (2.54 cm)
CG(N,L) 155080 1" (2.54 cm)
CG(N,L) 180080 1" (2.54 cm)
CG(N,L) 200100 1" (2. 54 cm)
CG(N,L) 200080 1" (2.54 cm)
CG(N,L) 199100(A) 1" (2.54 cm)
CG(N,L) 250100 2" (5.08 cm)
CG(N,L) 250065 2" (5.08 cm)
CG(N,L) 275100(A) 2" (5.08 cm)
CG(N,L) 305065 2" (5.08 cm)
CG(N,L) 365085(A) 3" (7.75 cm)
CG(N,L) 400100(A) 3" (7.75 cm)
In all installations the minimum combustible clearances from any
draft hood surface or vent piping shall be 6" (16cm). Vent piping
passing through a combustible wall or ceiling must be a continuous
run (no joints) and retain the 6" (16cm) clearance unless an
approved reducing thimble is used.
A service clearance of 24" (61cm) should be maintained from
serviceable parts, such as relief valves, flue baffles, flue damper
devices, thermostats, cleanout openings or drain valves.

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.
B C
(LEFT SIDE) (BACK) (CEILING)
1" (2.54 cm) 1" (2.54 cm) 12" (30.48 cm)
1" (2.54 cm) 1" (2.54 cm) 12" (30.48 cm)
1" (2.54 cm) 1" (2.54 cm) 12" (30.48 cm)
1" (2.54 cm) 1" (2.54 cm) 12" (30.48 cm)
1" (2.54 cm) 1" (2.54 cm) 12" (30.48 cm)
1" (2.54 cm) 1" (2.54 cm) 12" (30.48 cm)
2" (5.08 cm) 2" (5.08 cm) 12" (30.48 cm)
2" (5.08 cm) 2" (5.08 cm) 12" (30.48 cm)
2" (5.08 cm) 2" (5.08 cm) 12" (30.48 cm)
2" (5.08 cm) 2" (5.08 cm) 12" (30.48 cm)
3" (7.75 cm) 3" (7.75 cm) 12" (30.48 cm)
3" (7.75 cm) 3" (7.75 cm) 12" (30.48 cm)
TABLE 2
FIGURE 6

AIR REQUIREMENTS

REFER TO THE CURRENT EDITION OF THE "NATIONAL FUEL
GAS CODE" ANSI Z223.1/NFPA 54. FOR CANADA CONSULT
D
NATURAL GAS AND PROPANE INSTALLATION CODE
CAN/CSA-B149.1.
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.
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.
Where an exhaust fan is supplied in the same room with a
heater, sufficient openings for air must be provided in the walls.
UNDERSIZED OPENINGS WILL CAUSE AIR TO BE DRAWN
INTO THE ROOM THROUGH THE CHIMNEY, CAUSING POOR
COMBUSTION. SOOTING MAY RESULT IN SERIOUS DAMAGE
TO THE HEATER AND RISK OF FIRE OR EXPLOSION.

UNCONFINED SPACE

In buildings of conventional frame, brick, or stone construction,
unconfined spaces may provide adequate air for combustion,
ventilation and draft hood dilution.
If the unconfined space is within a building of tight construction
(buildings using the following construction: weather stripping,
heavy insulation, caulking, vapor barrier, etc.), air for combustion,
ventilation and draft hood dilution must be obtained from
outdoors. The installation instructions for confined spaces in
tightly constructed buildings must be followed to ensure adequate
air supply.
9
WARNING
WARNING