Natural Gas Conversion Instructions - White Mountain Hearth VSM-18-1 Installation Instructions And 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 connec-
tion, must be placed immediately upstream of the gas
supply connection to the appliance.
b.The appliance and its individual shutoff valve must be
disconnected 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.
14015-1-0903