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Manual - Unvented Gas Log Heater or Vented Decorative Appliance

Manual - Unvented Gas Log Heater or Vented Decorative Appliance

Manual - Unvented Gas Log Heater or Vented Decorative Appliance

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cleaning and maintenance<br />

BLDV7 Series <strong>Gas</strong> Fireplace<br />

WARNING<br />

Turn off gas bef<strong>or</strong>e servicing fireplace. It<br />

is recommended that a qualified service<br />

technician perf<strong>or</strong>m these check-ups at the<br />

beginning of each heating season<br />

Signature<br />

Command<br />

System Pilot<br />

Sens<strong>or</strong><br />

Thermopile<br />

Burner, Pilot and Control Compartment<br />

Keep the control compartment, logs, and burner areas<br />

surrounding the logs clean by vacuuming <strong>or</strong> brushing at<br />

least twice a year. Make sure the burner p<strong>or</strong>ting, pilot air<br />

opening and burner air opening are free of obstructions<br />

at all times.<br />

Pilot Flame<br />

The flames from the pilot should be visually checked as<br />

soon as the heater is installed and periodically during<br />

n<strong>or</strong>mal operation. The pilot flame must always be present<br />

when the fireplace is in operation. Figure 51. The<br />

pilot flame has three distinct flames, one engulfing the<br />

thermopile, one engulfing the thermocouple <strong>or</strong> sens<strong>or</strong>, and<br />

the other reaching to the main burner.<br />

burner<br />

Inspect area around the inject<strong>or</strong>. Remove any lint <strong>or</strong> f<strong>or</strong>eign<br />

material with a brush <strong>or</strong> vacuum.<br />

Burner Flame<br />

The flames from the burner should be visually checked<br />

as soon as the heater is installed and periodically during<br />

n<strong>or</strong>mal operation. In n<strong>or</strong>mal operation, at full rate, and<br />

after operating f<strong>or</strong> about 15 to 30 minutes, the flame<br />

should be yellow and slightly taller than the rear log.<br />

Figure 52<br />

If the flame is blue and only in the center, turn off unit<br />

and let cool. After unit is cool, remove logs and check to<br />

make sure the back holes in the burner are not covered<br />

with rock wool. If the back holes are clear, add m<strong>or</strong>e rock<br />

wool to the center of the burner. Replace logs.<br />

NOTE: The type of installation, vent system<br />

configuration, and wind effects may cause the flame<br />

patterns to vary.<br />

Millivolt<br />

Control<br />

Pilot<br />

Figure 51 -<br />

Pilot Flame<br />

Thermocouple<br />

FP1943<br />

pilot flame<br />

FP1943<br />

FP2453<br />

Thermopile<br />

FP2453<br />

hooded pilot flames<br />

Figure 52 -<br />

Burner Flame Appearance<br />

44<br />

LG647<br />

BLDV log flames<br />

LG647<br />

74D3000

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