25
Adjustable
piece
Air Restrictor Assembly
DO NOT INSTALL HERE!
INSTALL HERE
Vent terminal Appliance
vent outlet
Vertical vent
pipe run
Restrictor
setting
Horizontal
through wall
with vertical
rise
Top or Rear
Less than
6’ [183 cm]
From 6’ to 20’
[1,83 to 6,1 m]
From 20’ to 40’
[6,1 to 12,2 m]
Vertical
through roof
Top or Rear
Less than
20’ [6,1 m]
From
20’ to 40’
[6,1 to 12,2 m]
No vertical rise
= NO restrictor
Install Air Restrictors
(if necessary)
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
fi
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
di
ff
erent positions depending of the ven con
fi
guration. See the table below
to
fi
nd out which position is optimal for each type of installation.
• To
fi
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.
Appliance Preparation
Restrictors
Re-install Rear Log Support
Re
fi
t the rear log support in place (5 screws).
