Orifice Replacement - Napoleon GDS60-N Installation And Operation Instructions Manual

REAR VENT HORIZONTAL TERMINATION
When venting off
the rear of the unit
and terminating
horizontally, a #45
natural gas orifice
or a #55 propane
orifice must be
used.
The maximum allowable length is 20 feet. All 90° and 45°
elbows (except the first two when venting horizontally) re-
duce the length by 5 feet each, both horizontally and verti-
cally). In this illustration, the maximum allowable length
after taking the two elbows into account is 10 feet.
R E Q U I R E D
V E R T I C A L
R I S E F R O M
F I R E P L A C E
TO FIRST EL-
B O W I N
INCHES
FIGURE 14b
CALCULATED HORIZONTAL VENT RUN IN FEET
Use the chart on this page to calculate horizontal runs for
vertical rises between 29 and 57 inches.
When calculating maximum run lengths, include 5 feet for
each 90° or 45° elbow.
(DO NOT INCLUDE THE FIRST TWO ELBOWS DIRECTLY
OFF THE UNIT WHEN VENTING HORIZONTALLY .)

ORIFICE REPLACEMENT

FIGURE 15
In order to access the orifice, the log support secured by
two screws, must be removed.
FIGURE 16
FIGURE 14a
Care should be taken not to damage the gas pipe. When
removing the orifice, using a 9/16" socket wrench, a 7/8"
back-up wrench must be used on the manifold, located
below the housing, to ensure that the aluminum tubing
does not twist or kink.
CHANGING A TOP VENT TO A REAR VENT
STOVE TOP
TOP VENT FILLER PLATE
FIGURE 17a
7" COVER
Unscrew and discard the top vent filler plate. Lift off the cast
stove top. Unscrew the four screws holding both the top
heat shield and the 7" flue collar in place and lift off.
FIGURE 17b
Lift the gasket off. Unscrew the 4 screws securing the 4"
collar and its gasket in place and remove it and the knock-
out from the rear panel. Remove the 7" and 4" covers and
gaskets from the back. Position the 4" gasket and cover
over the flue opening in the top.
4" COVER
(FLANGE DOWN)
FIGURE 17c
Secure with 4 screws. Place the 7" gasket and cover over
the air opening in the top. Replace the top heat shield and
re-secure. Secure both gaskets and collars over the rear
openings. Using the 2 screws secure the optional trivet to
the underside of the top. Replace the stove top.
FIGURE 17d
TOP HEAT SHIELD
W415-0158 / E / 02.19.04
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