Reliant FVIR GAS WATER HEATER Bedienerhandbuch PDF herunterladen (Seite 11)

Insulation blankets are available to the general public for

external use on gas water heaters but are not necessary with

Reliance products. The purpose of an insulation blanket is to

reduce the standby heat loss encountered with storage tank

heaters. Your Reliance water heater meets or exceeds the

EPACT standards with respect to insulation and standby loss

requirements, making an insulation blanket unnecessary.

Should you choose to apply an insulation blanket to this heater,

you should follow these instructions (For identification of

components mentioned below, see Figure 1). Failure to follow

these instructions can restrict the air flow required for proper

combustion, potentially resulting in fire, asphyxiation, serious

personal injury or death.

•

Do not apply insulation to the top of the water heater, as this

will interfere with safe operation of the draft hood.

•

Do not cover the outer door, thermostat or temperature &

pressure relief valve.

• Do not allow insulation to come within 2" of the floor to

prevent blockage of combustion air flow to the burner.

•

Do not cover the instruction manual. Keep it on the side of

the water heater or nearby for future reference.

• Do obtain new warning and instruction labels from Reliance

for placement on the blanket directly over the existing labels.

• Do inspect the insulation blanket frequently to make certain

it does not sag, thereby obstructing combustion air flow.

COMBUSTION AIR AND VENTILATION FOR

APPLIANCES LOCATED IN UNCONFINED SPACES

UNCONFINED SPACE is space whose volume is not less than

50 cubic feet per 1,000 Btu per hour (4.8 m

per kW) of the

aggregate input rating of all appliances installed in that space.

Rooms communicating directly with the space in which the

appliances are installed, through openings not furnished with

doors, are considered a part of the unconfined space.

In unconfined spaces in buildings, infiltration may be adequate

to provide air for combustion, ventilation and dilution of flue

gases. However, in buildings of tight construction (for example,

weather stripping, heavily insulated, caulked, vapor barrier, etc.),

additional air may need to be provided using the methods

described in “Combustion Air and Ventilation for Appliances

Located in Confined Spaces.”

COMBUSTION AIR AND VENTILATION FOR

APPLIANCES LOCATED IN CONFINED SPACES

CONFINED SPACE is a space whose volume is less than 50

cubic feet per 1,000 Btu per hour (4.8 m

per kW) of the

aggregate input rating of all appliances installed in that space.

A. ALL AIR FROM INSIDE BUILDINGS:

(See Figures 10 and 11)

The confined space shall be provided with two permanent

openings communicating directly with an additional room(s)

of sufficient volume so that the combined volume of all spaces

meets the criteria for an unconfined space. The total input of

all gas utilization equipment installed in the combined space

shall be considered in making this determination. Each

opening shall have a minimum free area of one square inch

per 1,000 Btu per hour (22cm

/kW) of the total input rating of all

gas utilization equipment in the confined space, but not less

than 100 square inches (645cm

). One opening shall

commence within 12” (30 cm) of the top and one commencing

within 12” (30 cm) of the bottom of the enclosures.

FIGURE 11.

B. ALL AIR FROM OUTDOORS: (See Figures 12, 13 and 14)

The confined space shall be provided with two permanent

openings, one commencing within 12” (30 cm) of the top and

one commencing within 12” (30 cm) from the bottom of the

enclosure. The openings shall communicate directly, or by

ducts, with the outdoors or spaces (crawl or attic) that freely

communicate with the outdoors.

FIGURE 12.

1. When directly communicating with the outdoors, each

opening shall have a minimum free area of 1 square inch

per 4,000 Btu per hour (5.5 cm

/kW) of total input rating of all

equipment in the enclosure, see Figure 12.

2. When communicating with the outdoors through vertical

ducts, each opening must have a minimum free area of 1

square inch per 4,000 Btu per hour (5.5 cm

/kW) of total

input rating of all equipment in the enclosure, see

Figure 13.

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