Reliant FVIR GAS WATER HEATER Technical Information PDF herunterladen (Seite 13)

BASIC INSTALLATION & OPERATION

Table 1:

BTUH Input

Minimum Square

Feet with

8’ Ceiling

Typical Room

with 8’ Ceiling

30,000 188 9 x 21

45,000 281 14 x 20

60,000 375 15 x 25

75,000 469 15 x 31

90,000 563 20 x 28

105,000 657 20 x 33

120,000 750 25 x 30

135,000 844 28 x 30

IMPORTANT:

• The area must be open and be able to provide

the proper air requirements to the water heater.

Areas that are being used for storage or contain

large objects may not be suitable for water heater

installation.

• Water heaters installed in open spaces in buildings

with unusually tight construction may still require

outdoor air to function properly. In this situation,

outside air openings should be sized the same as

for a confined space.

• Modern home construction usually requires

supplying outside air into the water heater area.

• Room exhaust fans may effect air requirements.

Conﬁ ned Space: For the correct and proper operation

of this water heater, ample air must be supplied for

the combustion, ventilation, and dilution of ﬂ ue gases.

Small enclosures and conﬁ ned areas must have two

permanent openings so that sufﬁ cient fresh air can be

drawn from outside of the enclosure. One opening shall

be within 12 inches of the top and one within 12 inches

of the bottom of the enclosure.

The size of each opening (free area) is determined by

the total BTUH input of all gas utilization equipment

(i.e., water heaters, furnaces, clothes dryers, etc.) and

the method by which the air is provided. The BTUH

input can be found on the water heater rating plate.

Additional air can be provided by two methods:

1. All air from inside the building.

2. All air from outdoors.

12” MAXIMUM

PERMANENT

OPENINGS TO

HE OUTSIDE OR

ADDITIONAL

ROOMS WITHIN

THE BUILDING

CLOSET

OTHER

CONFINED

SPACE

12” MAXIMUM

Combustion Air Requirements:

WARNING

Carbon Monoxide Warning

Water heater must be vented to outdoors.

Vent must be installed by a qualified technician using

the local and state codes or, in the absence of local

and state codes, the National Fuel Gas Code,

ANSI Z223.1 (NFPA 54) - current edition, and/or the

installation instructions.

Examples of a qualified technican include: gas

technicians, authorized gas company personel, and

authorized service persons.

Failure to so do can result in death or carbon monoxide

poisoning.

IMPORTANT: Air for combustion and ventilation must

not come from a ﬂ ammable or corrosive atmosphere.

Any failure due to ﬂ ammable or corrosive elements in

the atmosphere is excluded from warranty coverage.

The following types of installation (not limited to the

following) will require outdoor air for combustion due to

chemical exposure and may reduce but not eliminate

the presence of corrosive chemicals in the air:

• beauty shops

• photo processing labs

• buildings with indoor pools

• water heaters installed in laundry, hobby, or craft

rooms

• water heaters installed near chemical storage areas

• water softeners

Combustion air must be free of acid-forming chemicals

such as sulfur, ﬂ uorine, and chlorine. These elements

are found in aerosol sprays, detergents, bleaches,

cleaning solvents, air fresheners, paint, and varnish

removers, refrigerants, and many other commercial

and household products. When burned, vapors from

these products form highly corrosive acid compounds.

These products should not be stored or used near the

water heater, air inlet, or air intake path.

Combustion and ventilation air requirements are

determined by the location of the water heater.

The water heater may be located in either an open

(unconﬁ ned) area or in a conﬁ ned area or small

enclosure such as a closet or small room. Conﬁ ned

spaces are areas with less than 50 cubic feet for

each 1,000 BTUH of the total input for all gas-using

appliances.

Unconﬁ ned Space: A water heater in an unconﬁ ned

space uses indoor air for combustion and requires at

least 50 cubic feet for each 1,000 BTUH of the total

input for all gas appliances. The table below shows a

few examples of the minimum square footage (area)

required for various BTUH inputs.

Figure 7

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 43 44

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