Flame Appearance - Vermont Castings UVL18RN Installation And Operation Instructions Manual

The First Firing
On completing the gas line connection, a small
amount of air will be trapped in the gas line. When
you first light the unit with the pilot light, it will take a
few minutes to purge the trapped air. Once you have
purged the gas line, the pilot and burner will light and
operate normally. Subsequent lightings of the
appliance will not require purging the gas line.
When lit for the first time, the appliance will emit a
slight odor for an hour or two. This is due to paint
and lubricants used in the manufacturing process
curing under heat. This is normal. You may wish to
have the windows open to dissipate any odors
during the curing process.
Control Knob
Piezo Ignitor
Fig. 10 Honeywell control valve.
Fig. 11 SIT control valve.

Flame Appearance

To obtain proper operation, it is imperative that the
pilot and main burner flame characteristics are
steady, not lifting or floating. Refer to Figure 12 - 14
for proper burner flame appearance. Refer to Figure
15 for proper pilot flame appearance.
Typically, the top 1/8" of the thermopile should be
engulfed in the pilot flame. (Fig. 15)
1212
Operating Instructions
Fig. 12 UVL18 proper burner flame appearance.
Fig. 13 UVL24 proper burner flame appearance.
Hi/Lo Knob
HV101a
Piezo
Ignitor
Fig. 14 UVL30 proper burner flame appearance.
FP1036
Fig. 15 Proper pilot flame.
Thermopile
R Series
Thermocouple
M Series
Thermopile
Red Glow
LG115
Red Glow
LG116
Red
Glow
LG117
752
P103
UVL Series