Vermont Casting 36LDVT 39LDVT, 3LDVT Troubleshooting Honeywell Millivolt Valve, Start, Yes, Check

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LDVT Series Direct Vent Gas Fireplace

Troubleshooting Honeywell Millivolt Valve

START

Gas Supply On

YES

Pilot Lights With Piezo Ignitor

YES

Pilot Stays Lit

YES

Pilot Lights Main Burner

YES

SYSTEM OK

Remove Window Frame Assembly Before Service Work

CHECK

	NO	• Supply Line Hooked Up
	NO	• Shutoff Valve Open
		• Shutoff Valve Open

	• Lockout Has Engaged. Wait 60
		Seconds And Try Again.
	• For Spark At Electrode While
NO		Depressing Piezo
NO		1/8" Gap To Pilot Hood Needed.
		1/8" Gap To Pilot Hood Needed.
	•	All Wiring Connections
	•	Replace Piezo Ignitor


	• For Air In The Lines
	• Thermopile Needs A Min.
		325mv. Adjust Pilot Flame
		Height.
NO	•	All Wiring Connections
NO	•	Replace Thermopile
	•	Replace Thermopile
	• Thermocouple Needs A Min. Of
		14mv
	• Defective Valve. Turn To Pilot,
		Meter Should Read Greater
		Than 100mv. If Not, Replace.


	• Valve Is Turned On
	• Wall Switch Is Not Turned On.
NO		Watch For Grounded Wires!
	• Thermopile Needs A Min. 325mv.
	•	Plugged Burner Oriﬁce

10007852

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Contents Builder Top Vent Direct Vent Table of Contents Ansi Z21.88-2005 / CSA Vented Gas Fireplace Heaters Installation & Operating InstructionsPlease Review the Following Carefully Framing Dimensions Fireplace Dimensions33LDVT 36LDVT 39LDVT 43LDVT Locating Your Fireplace Clearance to CombustiblesMantels VentingHearth Framing and FinishingFinal Finishing Gas SpeciﬁcationsGas Line Installation Remote ON/OFF SwitchAlternate Switch Location High ElevationsEB-1 Electrical Box Electronic Gas Control ValveGeneral Venting Location of Vent TerminationCanadian Installations1 US Installations2 General Venting Information Termination LocationCanadian Installations USA InstallationsGeneral Information on Assembling Vent Pipes Flex Vent PipesHow to Use the Vent Graph Twist Lock PipesVertical Sidewall Applications Example aSupport straps for horizontal runs Vertical Sidewall Installation Twist Lock Pipe StepVertical Sidewall Installation Flex Vent Pipe Always install horizontal venting on a level planeBelow Grade Installations 7TDVSNORKSnorkel installation, recessed foundation Vertical Through-the-Roof ApplicationsVertical Through-the-Roof Installation Min 610 mmVertical Restrictor Plate 36LDVT, 39LDVT, 43LDVT Venting Components Window Frame Assembly Removal Glass CleaningOperating Instructions Glass InformationLog Identiﬁcation Chart Installation of Logs, Lava Rock & Ember MaterialLog Installation On the burner housing assembly Do not place any of the lava rock materialFlame Characteristics Flame & Temperature AdjustmentRN/RP & EN/EP Models 33LDVT To Turn Off Gas To Heater Lighting and Operating InstructionsWhat to do if YOU Smell GAS Turning Off the Gas to the Appliance Lighting InstructionsValve in the on position Troubleshooting Honeywell Millivolt Valve Remove Window Frame Assembly Before Service WorkStart YESNormal Operation Troubleshooting the Gas Control SystemAbnormal Operation PSE Pilot SIT 820 Nova Gas Control Valve FigFor Model 36LDVT only Remove the rear log SIT top Convertible PilotMaintenance Cleaning the Standing Pilot Control SystemBurner and Burner Compartment Brass Trim33/36/39/43LDVT 33/36/39/43LDVT DescriptionFuel Conversion Kits Optional Accessories Fan KitsSpeciﬁcations Method aWiring Instructions Remote ControlsCeramic Refractory Panels Model Function/s ControlledOptional Trim Kits Screen Door KitFiligree Louvre Kit Arch/Square Face KitLdvt Series Direct Vent Gas Fireplace Product Covered by this Warranty If Warranty Service is NEEDED…Efﬁciency Ratings AFUE%

3LDVT, 36LDVT 39LDVT, 43LDVT specifications

Vermont Casting has been a standout name in the world of cast-iron wood and gas stoves, delivering exceptional craftsmanship and innovative technology. The models 36LDVT, 39LDVT, 43LDVT, and 3LDVT are no exception. These stoves are designed to blend functionality with timeless aesthetics, making them perfect for a range of home settings.

The 36LDVT, featuring a compact design, is ideal for smaller spaces without sacrificing performance. Its advanced airflow technology ensures a clean burn, increasing efficiency and reducing emissions. The unique front-loading door allows for easy access to firewood, while the large viewing window creates an inviting ambiance, showcasing the flames beautifully.

The 39LDVT offers a larger firebox, accommodating bigger logs, making it suitable for those who enjoy longer burn times. Like the 36LDVT, it incorporates Vermont Casting's patented airflow system, optimizing heat output. One of its standout features is the innovative Intelli-Burn technology, which automatically adjusts the air intake for consistent heating. This ensures that the user spends less time managing fuel and more time enjoying the warmth.

For homeowners with more extensive heating needs, the 43LDVT provides ample heating capacity. Its robust construction not only enhances durability but also maximizes heat retention. The stove is designed with a user-friendly interface that simplifies operation. It also comes with adjustable legs, allowing for customizable installation to fit specific preferences and aesthetics.

Finally, the 3LDVT model is an epitome of efficiency, designed with modern technology while paying homage to classic wood-burning aesthetics. Its clean-line design effortlessly fits into contemporary and traditional spaces alike. The 3LDVT utilizes a secondary combustion chamber, promoting an even cleaner burn and increasing heat output. With easy-to-use controls and a reliable ignition system, users can ignite warmth at the push of a button.

Each of these Vermont Casting stoves emphasizes reliability, efficiency, and environmental friendliness. They are not just heating appliances; they represent a commitment to sustainable living without compromising on style or comfort. The blend of innovative technologies, including adjustable airflow and secondary combustion systems, positions these models as top choices for anyone looking to enhance their home heating experience with elegance and efficiency.