Delta F-25 User Manual download pdf (Page 32)

27

Venting

Vent Connectors

- When a vent connector must be located

in or pass through an un-conditioned

space, attic or crawl space, that portion

of the vent connector must be listed as

Type B or other approved material hav-

ing equivalent insulation qualities.

- The minimum clearance to com-

bustibles for single wall vent connec-

tors shall be 6 inches.

- The minimum clearance to com-

bustibles for Type B vent connectors

shall be 1 inch or per vent manufactur-

er’s instructions.

- The vent connector shall be installed in a

manner to avoid excessive turns or other

construction features that create excessive

resistance to the flow of the vent gases.

- The vent connector should be installed in

a manner without any dips or sags and

should slope upward toward the vent or

chimney at least 1/4 inch per 1 foot.

- The location of the appliance should be

located as close to the vent or chimney

to maintain the vent connector length as

short as possible.

The maximum horizontal length allow-

able should not exceed 75% of the height

of the vent or chimney assuming no off-

sets in the vertical vent.

- The entire length of a vent connector

shall be readily accessible for inspec-

tion, cleaning and replacement.

- The diameter of the vent connector should

not be upsized more than two sizes greater

than the flue outlet diameter.

The vent system must be designed and

installed in compliance with all applica-

ble codes. Failure to properly size and

install the vent system could result in

severe personal injury, death or substan-

tial property damage.

Common Vent Systems

The ELITE may be vented into a common vent

system using the guidelines and sizing Tables

of the National Fuel Gas Code NFPA 54 ANSI

Z223.1 latest edition.

The ELITE may also be vented into a common

multi story vent using the guidelines and sizing

Tables of the National Fuel Gas Code NFPA 54

ANSI Z223.1 latest edition.

WARNING

BEST PRACTICE

Dual Acting

Barometric

Damper

Tee (drip leg)

Bottom Cap.

Dual Acting

Barometric

Damper

Fig. 14

Fig. 14A

Gas Fired Installations

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