DETAIL A
SCALE 1 : 1.5
Initial Installation
QUALIFIED INSTALLERS ONLY
a
iR
R
estRictoR
s
ettings
:
When installing the S20I/ S20ID with 8ft (2.44M) or more of vertical venting it may be necessary to
restrict the fresh air supply in the firebox to control the combustion and flame appearance. Using the pair
of air restrictors supplied with the unit, install them on each side of the firebox and adjust to the correct
setting as outlined in the figure and table below. To install the air restrictors first you must remove the
log set, air diffuser, and creamic brick panels (see
s
econDary
I
nstallatIon
- o
PtIonal
P
orcelaIn
P
anels
I
nstallatIon
anD
r
emoVal
)
then remove the set screws as shown on each side of the firebox. Next, install
the restrictors at the correct setting and tighten the set screws to hold them in place.
Air Restrictor Settings
Length of Vertical Vent
Propane
Natural Gas
Less than 8ft (2.44m)
No Restriction Required
No Restriction Required
8ft (2.44m) - 20ft (6.1m)
No Restriction Required
No Restricition Required
Through Roof Termination, more than 20ft
(6.1m) to 40ft (12.19m)
Setting #1
Setting #1
#3
#2
#1
Set Screw
Figure 33: Installation of Air Restrictors
Table 6: Air Restrictor Settings
28
