DriSteem Vapor-Logic Instalační příručka stáhnout pdf (Strana 32)

Page 30 • DRI-STEEM GTS Humidifier Installation, Operation, and Maintenance Manual

Combustion and ventilation air

The GTS supports both room air and sealed combustion.

Requirements and recommendations for each follow.

Room air combustion

• All fuel burning equipment must be supplied with air for

combustion of the fuel. Sufficient air must be provided to ensure

there is not a negative pressure in the equipment room or space.

• Provide adequate combustion and ventilation air in accordance

with Section 5.3, Air for Combustion and Ventilation, of the

National Fuel Gas Code, ANSI Z223.1 or applicable provisions

of governing codes. Canadian installations must be installed in

accordance with sections 7.2, 7.3, and 7.4 of the CAN/CGA.B149

Installation Codes and all authorities having jurisdiction.

• For proper and safe operation this appliance needs air for

combustion and ventilation. Do not block or obstruct air

openings on the appliance, spaces around the appliance, or air

openings communicating with the appliance area.

• Do not locate in a dusty environment.

• Do not block the flow of combustion and ventilation air. To

provide for necessary oxygen for proper combustion, openings

must be provided to allow outside air to enter the space where the

humidifier is located. Enclosed spaces, such as equipment rooms,

must be vented for combustion air. The size of air openings must

be based on all gas-burning equipment installed in the space

involved. Table 30-1 outlines four types of locations, and the

requirements of each.

C o m b u s t i o n a n d v e n t i l a t i o n a i r

Table 30-1:

Location of humidifier and required air openings

Location description Required air opening

Conﬁned space with all air from inside the

building; conventional frame, brick or stone

construction with normal inﬁltration (Note:

this location rarely provides enough air for

higher capacity units.)

Two openings, 1 sq. in. (6.5 cm

) per

opening per 1000 Btu/hr (293 W) input

The minimum free area of all openings

combined is 100 sq. in. (645 cm

Conﬁned space with all air from outside the

building through air ducts

Two openings, 2 ducts, 1 sq. in. (6.5 cm

)

per opening per 2000 Btu/hr (586 W) input*

Conﬁned space with all air from outside the

building from through-wall openings only

(no ducts)

Two openings, 1 sq. in. (6.5 cm

) per

opening per 4000 Btu/hr (1172 W) input*

Unconﬁned space with all air from outside

the building

Same as conﬁned space; all air from outside

the building

Note:

* The minimum dimension of any opening is 3" × 3" (76 mm × 76 mm).

W A R N I N G !

Air for combustion must not be

contaminated by halogen compounds, which

include ﬂuoride, chloride, bromide, and

iodide. These elements are found in aerosol

sprays, detergents, bleaches, cleaning

solvents, salts, air fresheners, and other

household products.

When the GTS is located in an environment

with negative pressure or toxic air, it must

have sealed combustion.

Failure to follow these instructions could

cause severe bodily injury or death.

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