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Installation
21
1300003 (EN)
Exhaust Requirements
Whenever possible, install the finisher along an
outside wall where duct length can be kept to a
minimum and make-up air can be easily accessed.
Construction must not block the airflow at the rear of
the finisher. Doing so would prevent adequate air
supply to the finisher combustion chamber.
IMPORTANT: Provisions must be made for make-
up air.
NOTE: At a minimum, the National Fuel Gas Code
requires finishers to have at least one square inch
(6.5 sq. cm) of opening for every 1000 Btu/hr. of
input rating for proper combustion.
IMPORTANT: Do not obstruct flow of combustion
and ventilation air.
The air flow necessary for combustion is shown in
Table 7
.
*One motor on electric models.
Table 7
NOTE: For gas models, use two separate outlets
that are at least 4 inches (102 mm) each or use a
single outlet duct that has a diameter of at least
8 inches (203 mm).
The exhaust outlet on the finisher has a diameter of
4 inches (102 ). Using the shortest possible path,
connect the exhaust outlet to an outlet duct.
IMPORTANT: Outlet ducts used for the finisher’s
exhaust may under no circumstances be shared
with other devices.
The maximum static back pressure is 1.6 W.C.I.
(4 mbar).
Finisher produces combustible lint. To
reduce the risk of fire, the finisher must be
exhausted to the outdoors.
To reduce the risk of fire and accumulation
of combustible gases, DO NOT exhaust
finisher air into a window well, gas vent,
chimney or enclosed, unventilated area
such as an attic wall, ceiling, crawl space
under a building, or concealed space of a
building.
W545
WARNING
Type
UD13F063
UD13F079
UD13F126
Cfm
2 x 292*
2 x 292
2 x 292