Empire Comfort Systems DVX42DP31(N,P)-1 Ignition System Checks, ARC Length Action

Page 53

INTERMITTENT PILOT TROUBLESHOOTING (continued)

Important

1.The following service procedures are provided as a general guide.

2.Meter readings between gas control and ignition module must be taken within the trial for ignition period. Once the igni- tion module locks out, the system must be reset by setting the thermostat down for at least one minute before continuing.

3.If any component does not function properly, make sure it is correctly installed and wired before replacing it.

4.The ignition module cannot be repaired. If it malfunctions, it must be replaced.

5.Only trained, experienced service technicians should service intermittent pilot systems.

Perform the checkout steps on page 51 as the first step in troubleshooting. Then check troubleshooting guide to pinpoint the cause of the problem. If troubleshooting indicates an ignition problem, see Ignition System Checks below to isolate and correct the problem.

Following troubleshooting, perform the checkout procedure (page 51) again to be sure system is operating normally.

Ignition System Checks

Step 1: Check ignition cable.

Make sure:

A.Ignition cable does not touch any metal surfaces.

B.Ignition cable is no more than 36 inches long.

C.Connections to the ignition module and to the igniter-sensor are clean and tight.

D.Ignition cable provides good electrical continuity.

Step 2: Check ignition system grounding.

Nuisance shutdowns are often caused by a poor or erratic ground.

A.Acommon ground, usually supplied by the pilot burner bracket, is required for the module and the pilot burner/igniter sen- sor.

•Check for good metal-to-metal contact between the pilot burner bracket and the main burner.

•Check the ground lead from GND (BURNER) terminal on the module to the pilot burner. Make sure connections are clean and tight. If the wire is damaged or deteriorated, replace it with No. 14-18 gauge, moisture-resistant, thermoplastic insulated wire with 105 C (221 F) minimum rating.

•If flame rod or bracket are bent out of position, restore to correct position.

•Replace pilot burner/igniter sensor if insulator is cracked.

Step 3: Check spark ignition circuit. You will need a short jumper wire made from ignition cable or other heavily insulated wire.

A.Close the manual gas valve.

B.Disconnect the ignition cable at the SPARK terminal on the module.

Warning

When performing the following steps, do not touch stripped end of jumper or SPARK terminal. The ignition circuit generates 13,000 volts at 25 pf load and electrical shock can result.

C.Energize the module and immediately touch one end of the jumper firmly to the GND terminal on the module. Move the free end of the jumper slowly toward the SPARK terminal until a spark is established.

D.Pull the jumper slowly away from the terminal and note the length of the gap when sparking stops. Check table below.

ARC LENGTH

ACTION

No arc or arc less than 1/8

Check external fuse, if

inch.

provided.

 

Verify power at module input

 

terminal.

 

Replace module if fuse and

 

power okay.

Arc 1/8 inch or longer.

Voltage output is okay.

Step 4: Check pilot flame current.

A.Turn off furnace at thermostat.

B.Disconnect main valve wire from the TH or MV terminal on the gas control.

C.Disconnect ground wire from GND (BURNER) terminal at module.

D.Connect a meter (dc microamp scale) in series with the ground lead.

•Disconnect ground lead from GND terminal on ignition module.

•Connect the black (negative) meter lead to the ignition module GND (BURNER) terminal.

•Connect the red (positive) meter lead to the free end of the ground lead.

E.Set thermostat to call for heat. The spark will light the pilot but the main burner will not light because the main valve actuator is disconnected.

F.Read the meter. The flame sensor current must be steady and at least 1.0 uA.

G.If the reading is less than the minimum or unsteady,

•Make sure pilot flame envelopes 3/8 to 1/2 inch of the flame rod.

•If necessary, adjust pilot flame by turning the pilot adjustment screw on the gas control clockwise to decrease or counter- clockwise to increase pilot flame. Following adjustment, always replace pilot adjustment cover screw and tighten firmly to assure proper gas control operation.

•Check for cracked ceramic insulator, which can cause short to ground, and replace igniter-sensor if necessary.

•Make sure electrical connections are clean and tight. Replace damaged wire with moisture-resistant No. 18 wire rated for continuous duty up to 105 C (221 F).

H.Remove meter and reconnect all wires. Return system to normal operation before leaving job.

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Contents DVX36DP71N,P-1 DVX42DP71N,P-1 DVX36DP31N,P-1 DVX42DP31N,P-1DVX36DP91N,P-1 DVX42DP91N,P-1 UL File NO. MH30033Table of Contents Important Safety Information Some Points to Remember LP-GAS Warning OdorNo Odor Detected Odor Fade Vent Directly BELOW. Keep Clear of ALL Obstructions Requirements for MassachusettsIntroduction Remote Control Options Description SpecificationsFireplace Dimensions Clearances Mantel Chart FigureLocating Fireplace Clearances FigureChecking Manifold Pressures Installing a New Main Gas CockGAS Supply Vent Pipe Clearance InstallationFraming and Finishing Finishing Figures 12 InstallationFraming Figure VERTICAL, 90 Elbow with Horizontal Termination Flush Wall InstallationCombustible Surround Installation Vent Runs Figures 14, 15, Dim To Use the Vent Graph Figure Venting Fireplace TOPExample a Example BSee Figure Installation of Flue Heat ShieldVenting Fireplace TOP Typical Basement Installation Below Grade InstallationCutting the Hole Figure Positioning the FireplaceExamples TOP Vent RUN DVVK-4FV Direct Vent Termination KIT Before You Start Items Required For Installation Tools Building SuppliesInstallation of the Vertical Flex Termination Kit Step-By-Step Installation For Flex DV Kit Roof Pitch DIA. Flex Vent Pipe DIA. Flex Flue Pipe DIA. Flue Adaptor 35’ MAX Number Item Description Repair Part No Supplied QuantityParts Verification DVVK-4RE Vent KIT Installation InstructionsInstalling Wall Thimble/Firestop Assembly Sealing 4 102 mm Diameter Flue Outlet Tube DVVK-4RE Vent KIT Installation InstructionsConnecting to Rigid Vent System Parts ListDVVK-4F Flex Vent Instructions Information on Various Venting Routes and Components Vertical Sidewall InstallationsTermination Clearances Vent Clearances Vent System Identification Framing and Finishing Installing Support Brackets FigureInstalling Firestops Figures 50, 51, 52, Framing and Finishing Horizontal Termination DVVK-5F Flex Vent Instructions InstallationSee Figure Installing the Vent System in a Chase General MaintenanceVertical Termination Determining Minimum Vent Height Above the RoofVertical Termination Reassembly and Resealing Vent Pipe SystemLOG Identification LOG Placement 13 LOG SET LOG Placement 13 LOG SET LOG Placement 13 LOG SET Log Set Parts List Index Letter Part Number Description Millivolt System Operating InstructionsInitial Lighting Pilot Flame FigureTRW Operating InstructionsStanding Pilot Wiring Diagram Standing Pilot Lighting Instructions For Your SAFETY, Read Before LightingFrequent pilot outage problem Standing Pilot TroubleshootingPilot and main burner extinguish while in operation Glass sootsElectrical Connection Figure Intermittent Pilot Wiring DiagramIntermittent Pilot Operating Instructions Intermittent Pilot Lighting Instructions For Your Safety Read Before LightingCheckout Intermittent Pilot TroubleshootingOperation Trial For Ignition Pilot IgnitionMain Burner Operation Intermittent Pilot TroubleshootingSafety Lockout ARC Length Action Ignition System ChecksIntermittent Pilot Troubleshooting Green LED Status Codes RF Standing Pilot Operating Instructions Status Action RF Transmitter FunctionsRF Wiring Diagram Wiring Diagram with BlowerWhat to do if YOU Smell GAS RF Standing Pilot Lighting InstructionsMaintenance and Service Glass Removal and Replacement Figures 73 Parts View Index No Part Number Description Parts List DVX36DP31,71,91Parts List DVX42DP31,71,91 Blower Wheels FBB4 Variable Speed Blower InstallationBlower Motor Junction BOX Wiring Installation Instructions Accent Lamp Brick Liner Installation InstructionsStacked Stone AccessoriesParts Not Under Warranty HOW to Order Repair PartsWarranty Parts Master Parts Distributor ListStudio Series Direct Vent Gas Fireplace Heater Firebox Dimensions Comfort Systems

DVX42DP71(N,P)-1, DVX36DP31(N,P)-1, DVX42DP91(N,P)-1, DVX42DP31(N,P)-1, DVX36DP71(N,P)-1 specifications

Empire Comfort Systems has long been a trusted name in heating solutions, and their line of direct vent gas fireplaces showcases a blend of innovation, style, and efficiency. Among their standout models are the DVX36DP91(N,P)-1, DVX36DP71(N,P)-1, DVX42DP31(N,P)-1, DVX42DP91(N,P)-1, and DVX36DP31(N,P)-1. Each of these models boasts unique features and technologies, making them ideal choices for modern living spaces.

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Maintenance is simplified, thanks to the easy-access features that allow for quick cleaning and servicing. The durable construction ensures long-lasting performance, making these fireplaces a worthwhile investment.

With their focus on efficiency, style, and advanced technology, Empire Comfort Systems’ DVX36DP91(N,P)-1, DVX36DP71(N,P)-1, DVX42DP31(N,P)-1, DVX42DP91(N,P)-1, and DVX36DP31(N,P)-1 models represent some of the best options available for homeowners seeking a reliable and attractive heating solution.
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