Desa VF-18N-MHd, VF-18P-MHd Inspecting Burners, To turn gas off To appliance, Pilot Flame Pattern

Page 18

Operating Heater

Continued

Lighting with Piezo Ignitor

1. Disconnect ignitor cable from receiver and connect to Piezo Ignitor Tab (see Figure 18, page 17 and Wiring Diagram on page 24).

2. STOP! Read safety information on page 15,

3. Make sure equipment shutoff valve is fully open.

4. Turn Motor-knob clockwise to the OFF position.

5. Wait (5) minutes to clear any gas and then smell for gas around heater and near floor. If you smell gas, STOP! follow "B" on page 14.

6. ON/OFF switch in "—" ON position.

7. MAN-knob on valve is in MAN position (see Figure 18, page 17), When in MAN position you can see a metallic core.

8. Push and hold down metal core fully with a pen while the pilot gas flows.

9. Press and release piezo ignitor button until pilot lights.

10. Continue holding down metal core for about 10 seconds and then release the metal core. Pilot should stay lit. If not, repeat steps one through 4, page 17.

11. Turn MAN-Knob to ON position - main gas flows.

12. Turn Motor-knob to adjust flame. Knob has a slipping clutch that allows manual flame height adjustment.

to turn gas off

to appliance

Shutting Off Heater

Press OFF button on remote control to switch off main gas and pilot gas or manually turn

Motor-Knob clockwise to the "O" OFF position.

Shutting Off Burner Only (pilot stays lit) Press to decrease the flame height and shut off main burner.

Inspecting Burners

Check pilot flame pattern and burner flame pat- terns often.

PILOT FLAME PATTERN

Figure 20 shows a correct pilot flame pattern. Figure 21 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 21

turn heater off (see To Turn Off Gas to Appli- ance, above or page 17)

see Troubleshooting, page 20

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

Thermocouple

Figure 20 - Correct Pilot Flame Pattern

(Natural Gas Pilot Shown)

Thermocouple

Figure 21 - Incorrect Pilot Flame Pattern

(Natural Gas Pilot Shown)

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Contents What to do if YOU Smell GAS Models VF-18N-MHD, VF-18P-MHD, VF-24N-MHD VF-24P-MHDTable of Contents Safety Information Product Identification Product IdentificationUnpacking Product FeaturesLocal Codes Air For Combustion VentilationDetermining fresh-air flow for heater location Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Installation Check GAS TypeInstallation and clearances for vent-free operation Installation Mantel Clearances Installing Heater AssemblyDetermining Minimum Mantel Clearance When using a Hood Floor ClearancesConnecting to gas supply Installation Items NeededChecking gas connections Natural GasPropane/LP Gas Pressure Testing Heater Gas Connections Adding Embers, Lava rock and Decorative logsTest Pressures Equal To or Less Than Psig 3.5 kPa For your safety Read before lighting Operating HeaterRemote Control FunctionsProcedure Manual LightingPilot Flame Pattern Inspecting BurnersTo turn gas off To appliance Lighting with Piezo IgnitorCleaning Maintenance Burner Flame PatternBurner Injector Holder Air Inlet Hole Injector Holder on Front Burner Tube Troubleshooting Observed Problem Possible Cause RemedySee Cleaning and Mainte Bad module Replace module Gas leak. See WarningWiring Diagram Identifying error signals from receiverTechnical Service Replacement PartsService Hints AccessoriesIllustrated Parts Breakdown Models VF-18N-MHD, VF-18P-MHD, VF-24N-MHD and VF-24P-MHDParts List Warranty Information Keep this WarrantyLimited Warranty VENT-FREE GAS LOG Heaters