Natural Gas Conversion Instructions - White Mountain Hearth VSM-18-1 Owner's Manual

NATURAL GAS CONVERSION INSTRUCTIONS

1. If applicable, turn OFF gas supply to vented decorative log
set.
2. If applicable, remove gas supply line from vented decorative
log set.
3. For VSM-(18, 24, 30) only, remove Propane gas inlet regulator
from burner assembly.
3. For VSR-(18, 24, 30) only, remove regulator cap and pink
conversion screw from HI-LO knob on gas valve.
4. For VSM-(18, 24, 30) only, install Natural gas inlet regulator
marked 4.5 onto burner assembly.
4. For VSR-(18, 24, 30) only, install Natural gas blue conversion
screw into HI-LO knob on gas valve. Assure that conversion
screw is finger tight (refer to Honeywell conversion instructions
which are included in conversion kit). Install new regulator
cap over blue conversion screw.
5. Remove Propane (LP) main burner orifice from orifice fitting.
Save the Propane (LP) gas main burner orifice from the appliance
for future use.
Attention: Use appropriate main burner orifice for NORMAL
input or REDUCED input.
6. Install Natural gas main burner orifice into orifice fitting for
NORMAL input.
For VSM-18, install one Natural gas main burner orifice
marked 22 for 65,000 BTUH input.
For VSM-24, install one Natural gas main burner orifice
marked 16 for 75,000 BTUH input.
For VSM-30, install one Natural gas main burner orifice
marked 16 for 75,000 BTUH input.
For VSR-18, install one Natural gas main burner orifice marked
20 for 65,000 BTUH input.
For VSR-24, install one Natural gas main burner orifice marked
14 for 75,000 BTUH input.
For VSR-30, install one Natural gas main burner orifice marked
14 for 75,000 BTUH input.
6. Install Natural gas main burner orifice into orifice fitting for
REDUCED input.
For VSM-18, install one Natural gas main burner orifice
marked 32 for 40,000 BTUH input.
For VSM-24, install one Natural gas main burner orifice
marked 28 for 50,000 BTUH input.
For VSM-30, install one Natural gas main burner orifice
marked 24 for 60,000 BTUH input.
For VSR-18, install one Natural gas main burner orifice marked
31 for 40,000 BTUH input.
For VSR-24, install one Natural gas main burner orifice marked
29 for 50,000 BTUH input.
For VSR-30, install one Natural gas main burner orifice marked
26 for 60,000 BTUH input.
Page 18
7. Remove pilot tubing from pilot burner.
8. Remove Propane (LP) gas pilot orifice from pilot burner. Save
the Propane (LP) gas pilot orifice removed from the appliance
for future use.
9. Insert Natural gas pilot orifice marked 12 into pilot burner.
10. Attach pilot tubing into pilot burner.
11. Connect gas supply line to vented decorative log set.
12. Attach R-1322, conversion label and R-1320, gas conversion
label to the 4 3/4" x 7 1/4" metal plate supplied in conversion
kit. Attach 4 3/4" x 7 1/4" metal plate to metal chain which is
attached to base assembly.
13. Pressure Testing of the Gas Supply System
a. To check the inlet pressure to the gas valve, a 1/8" (3mm)
N.P.T. plugged tapping, accessible for test gauge connection,
must be placed immediately upstream of the gas supply
connection to the appliance.
b.The appliance and its individual shutoff valve must be dis-
connected from the gas supply piping system during any
pressure testing of that system at test pressures in excess
of 1/2 psig (3.5 kPa).
c. The appliance must be isolated from the gas supply piping
system by closing its individual manual shutoff valve during
any pressure testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig (3.5 kPa).
Attention! If one of the above procedures results in pressures
in excess of 1/2 psig (14" w.c.) (3.5 kPa) on the appliance
gas valve, it will result in a hazardous condition.
14. Turn on Natural gas supply to vented decorative log set.
15. All gas connections must be checked for gas leaks by the person
(qualified agency) making the gas conversion. This should be
done with a soap solution watching for bubbles on all exposed
connections, and if unexposed, a pressure test must be done.
16. Check the appropriate manifold pressure for the vented
decorative log set according to Gas Supply on Page 8 in this
manual.
17. Check pilot burner flame pattern according to Pilot and Main
Burner Flame Characteristics on Page 12 in this manual.
18. Check main burner flame pattern according to Pilot and Main
Burner Flame Characteristics on Page 12 in this manual.
19. Gas conversion is completed.
Attention: The Natural gas conversion kit must be ordered from
Empire Comfort Systems, Inc.
14015-6-0907