31
31
Appliance Preparation
Adjustable
piece
Air Restrictor Assembly
Air Restrictors Fitting
No restrictors are required for appliances which only have a
horizontal vent run. If installing an appliance which has a rear vent
outlet connection and no vertical vent pipe rise, ignore this stage.
Two restrictor sets, like the one shown at right, are supplied with each
534 engine unit. The restrictors cover part of the
inlet air openings
in
the
rebox
rear wall
behind the rear log support.
Do NOT install the
restrictors in the roof of the
fi
rebox!
Each restrictor set includes an adjustable piece which can be moved
to different positions depending of the vent con
guration. See the table
below to
nd out which position is optimal for each type of installation.
• To
t the restrictors, loosen the two center screws of the left and right
inlet ports. Place the restrictor assembly under the screw heads and
tighten the center screws.
• To set the adjustable restrictor piece, loosen the two screws, position the
adjustable piece according to the diagram below and tighten the screws.
Vent terminal
Appliance
vent outlet
Vertical vent
pipe run
Use restrictor
setting
Horizontal
through wall
with vertical
rise
Top or Rear Less than
6’ (183 cm)
From
6’ (1.83 m) to
20’ (6.1 m)
From
20’ (6.1 m) to
40’ (12.2 m)
Vent terminal
Appliance
vent outlet
Vertical vent
pipe run
Use restrictor
setting
Vertical
through roof
Top or rear
Less than
20’ (6.1 m)
From
20’ (6.1 m) to
40’ (12.2 m)
DO NOT INSTALL HERE!
INSTALL HERE
QUALIFIED
INSTALLER
