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104131

NATURAL GAS CONSTRUCTION HEATER

TC100RNG

SYMPTOM

Pilot fails to light.

Pilot lights but goes  out
when control valve knob is
released.

Maximum burn rate is low;
emitter not glowing.

Soot forming inside heater,
flame 100% yellow.

Flames are extremely high.
Coming out of louvers

POSSIBLE CAUSE

1. Natural gas supply valve closed on gas supply.

2. Air in gas line.

3. Blockage in pilot orifice.

4. Piezo ignition system not sparking.

1. Not enough warm-up time.

2. Low gas pressure.

3. Thermocouple loose or needs to be replaced.

4. Control valve needs to be replaced.

1. Main burner valve not fully open.

2. Plugged gas orifices.

3. Low gas pressure.

1. Main burner valve not fully open.

2. Low gas pressure.

1. Unit was connected to LP gas instead of natu-

ral gas.

REMEDY

1. Open natural gas supply valve slowly.

2. Allow several minutes to purge air with automatic

control valve button depressed.

3. Replace pilot orifice.

4. Adjust ignitor electrode gap to .120". Check wire

lead for damage. Replace piezo ignitor and/or
ignitor electrode as necessary.

1. Relight, hold automatic control valve button in

45 seconds.

2. Check natural gas for proper gas supply.

3. Tighten connection or replace thermocouple.

4. Replace control valve.

1. Fully open main burner valve by turning the valve

handle towards ON position until it stops.

2. Replace gas orifice.

3. Consult natural gas supplier; check regulator

output.

1. Adjust main burner valve slowly towards ON

position.

2. Consult natural gas supplier.

1. Check gas source, replace with natural gas sup-

ply.

TROUBLESHOOTING

You may have further questions about this
heater. If so, contact DESA International’s
Technical Service Department at 1-800-
323-5190.

 WARNING: Never service heater while it is connected to gas

supply, operating, or hot. Severe burns can occur.

Summary of Contents for TC100RNG

Page 1: ...NG FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PROVIDED WITH THIS HEATER CAN RESULT IN DEATH SERIOUS BODILY INJURY AND PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE EXPLOSION BURN ASPHYXIATION CARBON MONOXIDE POISONING AND OR ELECTRICAL SHOCK ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW THE INSTRUCTIONS SHOULD USE OR SERVICE THIS HEATER IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS...

Page 2: ...once Check for proper ventilation and have heater serviced WARNING ICON G 001 WARNINGS Natural Gas Natural gas has a distinctive odor This odor helps you detect a natural gasleak However theodormayfade Natu ral gas may be present even though no odor exists Make certain you read and understand all Warnings Keep this manual for reference It is your guide to safe and proper operation of this heater I...

Page 3: ...ING 100 000 Btu Hr 3 0 SPECIFICATIONS Rating Btu Hr 100 000 Fuel Natural Gas Only Fuel Consumption Cubic Feet Hour 97 Supply Pressure To Regulator Maximum 1 2 psi Minimum 6 w c Manifold Pressure 4 w c Weight Pounds 23 Shipping Weight Pounds 27 Size L x W x H Inches 16 x 16 x 29 5 Figure 1 Product Identification INSTALLATION 1 Provide natural gas supply system 2 Install plumbing to a low pressure n...

Page 4: ...to left to PILOT position see Figure 3 OPERATION Figure 5 Control Valve Knob and Piezo Ignitor Button Locations 3 Connect the hose to the heater at the 1 2 inch SAE flare fitting at the valve inlet Tighten all fittings with a wrench 4 Open natural gas supply valve slowly 5 Check all connections for leaks 6 Close natural gas supply valve Control Valve Knob Piezo Ignitor Button INSTALLATION Continue...

Page 5: ...ntral or call DESA International s Tech nical Service Department at 1 800 323 5190 When calling DESA International have ready your name your address model number of your heater how heater was malfunctioning purchase date In most cases we will ask you to return the defective part to the factory REPLACEMENT PARTS WARNING Use only original replacement parts This heater must use design specific parts ...

Page 6: ...6 104131 NATURAL GAS CONSTRUCTION HEATER TC100RNG 1 2 3 4 27 28 6 5 7 23 24 20 17 25 26 19 18 22 16 21 12 11 10 8 9 13 14 15 ...

Page 7: ...01 Ignitor Electrode 1 11 097163 06 Pilot Burner Assembly 1 12 099237 01 Thermocouple Clip 1 13 097161 04 Pilot Burner Orifice 1 14 M5788 Compression Sleeve 4 15 M5787 Compression Nut 4 16 104121 01 Pilot Fuel Tube 1 17 104119 01 Control Valve 1 18 099461 01 Compression Gauge Tee 1 19 099460 01 Brass Hex Cap 1 20 103936 01 Regulator 1 21 099236 01 Thermocouple Kit 1 22 102445 01 Piezo Ignitor 1 23...

Page 8: ...alve slowly 2 Allow several minutes to purge air with automatic control valve button depressed 3 Replace pilot orifice 4 Adjust ignitor electrode gap to 120 Check wire lead for damage Replace piezo ignitor and or ignitor electrode as necessary 1 Relight hold automatic control valve button in 45 seconds 2 Check natural gas for proper gas supply 3 Tighten connection or replace thermocouple 4 Replace...

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Page 12: ...RRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUR POSE DESA International assumes no responsibility for indirect incidental or consequential damages Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations or exclusions may not apply to you This Limited Warranty gives you specific legal rights and you may also have other rights which var...

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