Lennox Hearth Products Spectra LSS-35CN Installation Instructions Manual page 32

Step 14. Unscrew the rear and front main
burner orifices (refer to Figure 54 ) from their
respective manifolds and replace them with the
ones provided in this kit. There are two main
burner orifices provided in this gas conversion
kit. Refer to Table below for the correct front
and rear main burner orifice sizes for the gas
being used. The orifice size is stamped on the
orifice. See Figure 55.
R e
M d o l e u F l e
B u n r
L S - S 5 3 C N N . t a G s a # 4 4
L S - S 5 3 C P L P G s a # 5 5
L S - S 0 4 C N N . t a G s a # 2 4
L S - S 0 4 C P L P G s a . 0 5 0
Figure 55
Lennox Hearth Products reserves the right to make changes at any time, without notice, in design,
materials, specifications, prices and also to discontinue colors, styles, and products.
Consult your local distributor for fireplace code information.
LENNOX , the LENNOX design, DAVE LENNOX, the image of DAVE LENNOX and other related
®
LENNOX marks are registered or common law trademarks of Lennox Industries Inc. and are used
with permission.
Printed in U.S.A. © 2013 Lennox Hearth Products
P/N 850016M Rev. N 02/2013
Incorrect orifice size installation
on either burner may result in
poor combustion which may
lead to the production of carbon
monoxide. It may also cause
sooting within the fireplace/
venting system.
r a F o r t n
r e B u n r r e
Step 15. Reassemble all removed components
# 0 5
by reversing the procedures outlined in the
preceding steps. Use pipe joint compound or
# 1 6
Teflon tape on all pipe fittings before installing
(ensure propane resistant compounds are used
# 5 4
in propane applications, do not use pipe joint
compounds on flare fittings). Adjust the air
" 4 # 6 5
shutter opening on the burner tube, referring
to Figure 49 on page 27.
Step 16. Attach the conversion kit label (Figure
56 ) to the rating plate on the appliance.
WARNING
1508 Elm Hill Pike, Suite 108, Nashville, TN 37210
THIS APPLIANCE HAS BEEN CONVERTED TO:
NATURAL GAS
INPUT BTU/HR – 50,000
MANIFOLD PRESSURE – 3.5"
ORIFICE SIZE – (0.130)
THIS APPLIANCE HAS BEEN CONVERTED TO:
PROPANE/LPG
INPUT BTU/HR – 50,000
MANIFOLD PRESSURE – 10"
ORIFICE SIZE – (0.080)
Example Labels
(Each Kit Contains Only One Label)
Figure 56
Step 17. Attach a manometer to the manifold
side pressure test fitting and verify manifold
pressure reads 3.5 inches water column (0.87
kPa) for natural gas, and 10.0 inches water
column (2.49 kPa) for propane gas.
Step 18. Apply gas to the system and relight
appliance. With the main burner "ON", test the
new pressure regulator assembly for leaks using
a leak test solution.
Step 19. Relight the main burner and verify
proper burner ignition and operation.