Restrictors - Valor 1000JN Installation Manual

Venting

Restrictors

The restrictors are not required when less than 1'-0"
vertical rise in vent system.
Install the restrictors in the roof of the fi rebox behind
the top liner panel. Adjust the restrictors before
installation of the top liner panel. Should subsequent
adjustment be required, you will need to remove the
top liner panel—see page 38.
MOST INSTALLATIONS REQUIRE RESTRICTORS for
improved fl ame picture and performance. This unit is
supplied with restrictors having fi ve diff erent positions
or settings. The level of restriction required depends on
the vertical rise in the venting system and, to a lesser
degree, the horizontal run and number of elbows.
The amount of restriction is based
on laboratory tests. The ideal
restrictor position may vary slightly,
especially when the vent pipe length
is near the limits of the acceptable
confi gurations for each type of
restrictor.
The chart on the previous page
shows the vent restrictor positions
required relative to the length of the
vent pipe.
To set the restrictors position:
1. Establish the required position
of the restrictors looking up the
venting table on the previous
page.
2. Fasten the restrictors using the
screws (2) already installed on
each side of the fi rebox roof
ports.
3. Slide the restrictors in the re-
quired position.
4. Tighten the screws.
Position #1
Position #3
Co-axial
INSTALL HERE
Position #2
Position #4
25