Vermont Casting DVT38 Troubleshooting the Gas Control System, SIT Nova 820 Millivolt Valve

Page 27

Chateau™

Troubleshooting the Gas Control System

SIT NOVA 820 MILLIVOLT VALVE

NOTE: Before trouble shooting the gas control system, be sure external gas shut off is in the “On” position.

 

Symptom

Possible Causes

Corrective Action

 

 

 

 

1.

Spark ignitor will not light

A. Defective or misaligned electrode

Using a match, light pilot. If pilot lights, turn off pilot and

 

 

at pilot

push the red button again. If pilot will not light - check

 

 

 

gap at electrode and pilot-should be 1/8” to have a

 

 

 

strong spark.

 

 

B. Defective ignitor (Push Button)

With the control knob in the pilot position, push the

 

 

control knob all the way and hold. Check for spark at

 

 

 

electrode and pilot. If no spark to pilot, and electrode

 

 

 

wire is properly connected, replace the battery in the

 

 

 

ignitor module and try again. Refer toMaintenance

 

 

 

Section. If the problem still exists, replace the ignitor

 

 

 

module box.

2. Pilot will not stay lit after

A. Defective pilot generator (thermo-

Check pilot flame. Must impinge on thermocouple/ther-

 

carefully following lighting

couple), remote wall switch

mopile. NOTE: This pilot burner assembly utilizes both

 

instructions

 

a thermocouple and a thermopile. The thermocouple

 

 

 

operates the main valve operation (On and Off). Clean

 

 

 

and or adjust pilot for maximum flame impingement on

 

 

 

thermopile and thermocouple.

 

 

B. Defective automatic valve

Turn valve knob to “Pilot”. Maintain flow to pilot; millivolt

 

 

 

meter should read greater than 10mV. If the reading

 

 

 

is okay and the pilot does not stay on, replace the gas

 

 

 

valve. NOTE: An interrupter block (not supplied) must

 

 

 

be used to conduct this test.

3.

Pilot burning, no gas to

A. Wall switch or wires defective

Check wall switch and wires for proper connections.

Jumper wire across terminals at wall switch, if burner

 

main burner

 

 

 

comes on, replace defective wall switch.. If okay,

 

 

 

 

 

 

jumper wires across wall switch wires at valve, if burner

 

 

 

comes on, wires are faulty or connections are bad.

 

 

B. Thermopile may not be generat-

1. Be sure wire connections form thermopile at gas

 

 

ing sufficient millivoltage

valve terminals are tight and thermopile is fully

 

 

 

inserted into pilot bracket.

 

 

 

2. One of the wall switch wires may be grounded. Re-

 

 

 

move wall switch wires form valve terminals if pilot

 

 

 

now stays lit, trace wall switch wiring for ground.

 

 

 

May be grounded to fireplace or gas supply.

 

 

 

3. Check thermopile with millivolt meter. Take reading

 

 

 

at thermopile terminals of gas valve. Should read

 

 

 

250-300 millivolts (minimum 150) while holding

 

 

 

valve knob depressed in pilot position and wall

 

 

 

switch “Off”. Replace faulty thermopile if reading is

 

 

 

below specified minimum.

 

 

C. Plugged burner orifice

Check burner orifices for debris and remove.

 

 

D. Defective automatic valve opera-

Turn valve knob to “On”, place wall switch to “On”

 

 

millivolt meter should read greater than 150mV. If the

 

 

tor

 

 

reading is okay and the burner does not come on,

 

 

 

replace the gas valve.

4.

Frequent pilot outage

A. Pilot flame may be too low or

Clean and/or adjust pilot flame for maximum flame

 

problem

blowing (high) causing the pilot

impingement on thermopile and thermocouple.

 

 

safety to drop out

 

 

 

B. Possible blockage of the vent

Check the vent terminal for blockage (recycling the flue

 

 

terminal

gases).

20006081

27

Image 27
Contents What to do if YOU Smell GAS INSTALLER/CONSUMER Safety InformationTable of Contents Installation & Operating Instructions Locating Your FireplacePlease Review the Following Carefully Fireplace Dimensions DVT38 Mantels Clearance to CombustiblesNailing flanges Framing and FinishingGas Specifications Gas Line InstallationFinal Finishing Gas Inlet and Manifold PressuresRemote ON/OFF Switch Electrical Junction Box E Units OnlyElectronic Gas Control Valve Location of Vent Termination General VentingGeneral Venting Information Termination Location Canadian Installations1 US Installations2Quick Reference for Fresh Air Restrictor Plate / Flue Baffle Horizontal Termination Canadian InstallationsUSA Installations General Information Assembling Vent Pipes SK8 Venting PipesSidewall Applications DVT44 onlyDVT38 only Step Sidewall InstallationLocate vent opening on wall Always install horizontal venting on a level planeFresh Air Restrictor Plate Typical offset application Vertical Through-the-Roof InstallationMin 610mm Component Description Model Number Chimney ComponentsOperating Instructions Glass Information Glass CleaningGlass Frame Assembly Removal Restrictor Plates InstallationFresh Air Restrictor Plate Adjustment Ceramic Refractory InstallationLog, Lava Rock and Ember Placement Place log rear onto rear log bracket Flame & Temperature Adjustment Flame CharacteristicsRN/RP & EN/EP Models To Turn Off Gas To Heater Lighting And Operating InstructionsValve in the on position Lighting and Operating InstructionsLighting Instructions Turning Off the Gas to the ApplianceSIT Nova 820 Millivolt Valve Troubleshooting the Gas Control SystemSIT 822 Valve with a Honeywell Electronic Ignitor Conversion Precautions Conversion ProcedureFuel Conversion Instructions Remove valve regulator Pilot Flame AdjustmentInjector Orifice Size Matrix Battery Replacement for Ignitor Module MaintenanceCleaning the Standing Pilot Control System Cleaning Electronic Ignition SystemDVT38, DVT44 DVT38 DVT44 DVT38, DVT44Fuel Conversion Kits Model Functions Controlled AccessoriesRemote Controls Full Surround MantelChateau Chateau If Warranty Service is NEEDED… Product Covered by this WarrantyModel EnerGuide Ratings Fireplace Efficiency % Efficiency Ratings

DVT38 specifications

The Vermont Casting DVT38 is a standout model in the realm of contemporary gas fireplaces, epitomizing both innovative engineering and aesthetic elegance. Designed with a focus on efficiency and style, the DVT38 offers homeowners an exceptional heating experience while enhancing the ambiance of their living spaces.

One of the main features of the Vermont Casting DVT38 is its impressive heat output. With a BTU range that ensures warmth for larger areas, the fireplace is capable of efficiently heating spaces without consuming excessive fuel. This is a critical aspect for homeowners seeking both comfort and energy savings. The fireplace integrates a dual burner system, promoting a uniform heat distribution and ensuring that every corner of the room enjoys consistent warmth.

Another notable characteristic of the DVT38 is its advanced burner technology. The unique burner design allows for a natural gas or propane option, giving consumers flexibility based on availability and preference. The adjustable flame settings enable users to customize the heat output and ambiance, perfect for both cozy winter evenings and social gatherings.

In terms of aesthetics, the Vermont Casting DVT38 boasts a sophisticated design that complements various interior styles. It features large glass viewing areas which present a captivating flame pattern, enhancing the visual appeal of the unit. The contemporary facade can be finished with a variety of trims and options, allowing homeowners to tailor the fireplace to their personal décor.

The DVT38 is also equipped with an easy-to-use electronic ignition system, further simplifying the operation. This feature ensures that lighting the fireplace is hassle-free, eliminating the need for matches or manual lighting. Additionally, many models come with a remote control option, allowing users to adjust settings from a distance, thereby enhancing convenience and usability.

Moreover, the DVT38 is built with durability in mind, incorporating high-quality materials that withstand the test of time while providing a reliable heating solution. Vermont Castings is renowned for its commitment to craftsmanship, and this model exemplifies that ethos.

In summary, the Vermont Casting DVT38 is an exquisite blend of functionality and design. With efficient heating capabilities, cutting-edge technology, and customizable aesthetics, it stands out as a premier choice for anyone looking to elevate their home heating experience. Whether for warmth or ambiance, the DVT38 is engineered to deliver satisfaction for years to come.