Vermont Casting RDVOD 3354, RDVOD 3399 manual Troubleshooting / Honeywell #8420 Gas Control System

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Radiance Direct Vent /Natural Vent Gas Heater

Troubleshooting / Honeywell #8420 Gas Control System

NOTE: Before troubleshooting the gas control system, be sure the external gas shutoff is in the “ON” position.

WARNING: REMOVE THE GLASS PANEL BEFORE PERFORMING ANY GAS CONTROL SERVICE WORK.

SYMPTOM

POSSIBLE CAUSES

CORRECTIVE ACTION

1.

Spark ignitor will

A. Defective or misaligned

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

 

not light

electrode at the pilot

push the ignitor button again. If pilot will not light, check

 

 

 

 

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

 

 

 

 

strong spark.

 

 

 

 

 

 

 

 

 

B. Defective ignitor (push but-

Push piezo ignitor button. Check for spark at electrode

 

 

 

ton)

and pilot. If there is no spark at the pilot, and electrode

 

 

 

 

wire is properly connected, replace ignitor.

 

 

 

 

 

 

 

2.

Pilot will not stay lit

A. Defective pilot generator

Check pilot flame. It must impinge on the thermocouple

 

after carefully fol-

(thermocouple)

or thermopile. NOTE: This pilot burner assembly uses

 

lowing the lighting

 

both a thermocouple and a thermopile. The thermocou-

 

instructions

 

ple operates the pilot flame. Tighten the thermocouple.

 

 

 

 

The thermopile operates the main valve (ON and OFF).

 

 

 

 

Clean and/or adjust pilot for maximum flame impinge-

 

 

 

 

ment on thermocouple and thermopile.

 

 

 

 

 

 

 

 

 

 

B. Defective automatic valve

Turn valve knob to ‘Pilot’. Maintain flow to pilot; millivolt

 

 

 

operator

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.

 

 

 

 

 

 

 

 

 

 

A. Remote switch or wires

Check rocker switch and wires for proper connection.

3.

Pilot lights, no gas

defective

Use jumper wires across terminals at rocker switch. If

 

to burner, valve

 

burner lights, replace rocker switch. If okay, use jumper

 

knob ON, remote

 

wires across rocker switch wires at the valve; if burner

 

switch (rocker

 

lights, wires are faulty or connections are bad.

 

switch) ON

 

 

 

 

 

B. Thermopile may not gener-

1. Be sure wire connections from thermopile at gas valve

 

 

 

 

 

 

ate sufficient voltage

terminals are tight and thermopile is fully inserted into

 

 

 

 

pilot bracket.

 

 

 

 

 

 

 

 

 

 

 

2. One of the rocker switch wires may be grounded.

 

 

 

 

Remove rocker switch wires from valve terminals. If

 

 

 

 

burner now stays lit, trace rocker switch wiring from

 

 

 

 

ground. It may be grounded to the appliance or the

 

 

 

 

gas supply line.

 

 

 

 

 

 

 

 

 

 

3. Check the thermopile with a millivolt meter. Take read-

 

 

 

 

ing at thermopile (“TP” and “TP/TH”) terminals of gas

 

 

 

 

valve. Should read 325 millivolts minimum while hold-

 

 

 

 

ing valve knob depressed in PILOT position and with

 

 

 

 

rocker 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

Turn knob to ON, place rocker switch to ON, millivolt me-

 

 

 

operator

ter should read greater than 10 mV. If the reading is okay

 

 

 

 

and the burner does not light, replace the valve.

 

 

 

 

 

 

 

4.

Frequent pilot out-

A. Pilot flame may be too low

Clean and/or adjust pilot flame for maximum flame im-

 

age

or high, (blowing or lifting),

pingement on thermocouple and thermopile.

 

 

 

causing the pilot to drop out

 

 

 

 

 

 

B. Possible blockage of the

Check the vent terminal for blockage.

 

 

 

vent terminal

 

 

 

20004188

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Contents Radiance Table Of Contents Verify proper operation after servicing Installation & Operating InstructionsRadiance dimensions Radiance Direct Vent/Natural Vent Stove DimensionsLocating The Stove Installation RequirementsClearance Requirements Wall and Ceiling Clearances Wall Centerline from FloorHearth Requirements Gas Inlet and Manifold Pressures Gas SpecificationsHigh Elevations Horizontal Termination Direct Vent onlyVertical Termination Direct Vent only Restictor Plate is used on Direct Vent installations onlyVent Termination Clearances Location of Vent Termination General Venting Information Termination Location Canadian Installations1 US Installations2Plate supplied with the stove is not used Venting Requirements Natural Vent OnlyVenting Requirements and Options Direct Vent only Parts Bag Contents Assembly ProceduresTools Required Unpack and Assemble LegsFan kit components Install the Optional FanInstall the Vent Adapter Pipe Venting System Assembly Direct Vent General InformationFor Canadian installations The venting system must Attach the Inner Vent Assembly to the stoveInstall the Outer Adapter Pipe. Orient the verti Side Wall Termination AssemblyDiscard the inner starter pipe shipped with the log Measure the horizontal length Vent Termination Below Grade Vertical Through the Roof Vent AssemblyInstall firestops and attic insulation shield Venting System Assembly Natural Vent General InformationInstall Log Set Install the Vent PipeConnect the Gas Supply Line Install the left and right rear logs and the right logInstall the Mesh and Grille Install ON/OFF SwitchBurner Information Thermostat Connection optionalFlame Characteristics Flame & Temperature AdjustmentOperation Your First FireTo Turn Off Gas To Heater Lighting and Operating InstructionsSymptom Possible Causes Corrective Action Troubleshooting / Honeywell #8420 Gas Control SystemTransmitter Operation Off Mode Shut Off ProcedureOn Manual Mode Delay Timer ModeFan Override During Auto Mode Auto ModeChange Between F/C Temperature Units Disable Thermostat FunctionLocal Path On Path Auto Path Conversion Procedure Conversion PrecautionsFuel Conversion Instructions Models 3350, 3351, 3360 thru 3369 R Models OnlyPilot type 2 Honeywell Pilot Pilot Type 1 SIT PilotModels 3352, 3354, 3390 thru 3399 RF Models Only Injector Orifice Size Matrix Air Shutter AdjustmentAll Models Conversion to Natural Gas Input BTU/hMaintenance Inspect the Vent System Annually Gasket ReplacementCheck the Gas Flame Regularly BLK Wiring DiagramsDescription Radiance Direct Vent/Natural Vent Gas Heater RdvodRadiance Direct Vent/Natural Vent Gas Heater Rdvod Optional Accessories Limited Lifetime Warranty Model EnerGuide Ratings Fireplace Efficiency % Efficiency Ratings

RDVOD 3360, RDVOD 3369, RDVOD 3354, RDVOD 3350, RDVOD 3399 specifications

Vermont Castings is renowned for its exceptional wood stoves and fireplaces, and the RDVOD series stands as a testament to their commitment to craftsmanship, efficiency, and innovative technology. The RDVOD 3399, RDVOD 3350, RDVOD 3360, RDVOD 3390, and RDVOD 3369 models embody a blend of traditional aesthetics and modern functionality, making them standout choices for homeowners seeking warmth and style.

One of the main features of the RDVOD series is its high-efficiency rating. These models utilize Vermont Castings' advanced combustion technology, which optimizes fuel usage, resulting in more heat output from less wood. This not only reduces overall wood consumption but also minimizes emissions, making these stoves environmentally friendly options for heating.

The RDVOD stoves are designed with robust cast iron construction, ensuring durability and longevity. The cast iron provides excellent heat retention and leads to a more consistent warmth in the home. Additionally, the stylish design of these models allows them to seamlessly integrate into various home decors, from rustic to contemporary.

Key technologies incorporated into these stoves include the patented "Biltmore" technology, which enhances the efficiency of the burning process. This technology ensures that the fire burns hotter and cleaner, providing more heat while reducing the pollutants released into the atmosphere. The adjustable air controls allow users to easily manage the flame and heat output, ensuring personalized comfort.

The RDVOD 3399, RDVOD 3350, RDVOD 3360, RDVOD 3390, and RDVOD 3369 also feature large glass doors that showcase the fire, adding visual appeal to any living space. The seamless integration of the glass doors with the cast iron design contributes to the overall aesthetic while allowing for easy monitoring of the fire.

Safety is another priority in the design of the RDVOD stoves. They come equipped with features like a removable ash pan, which simplifies cleanup and maintenance, and the air-wash system, which keeps the glass clean, providing an unobstructed view of the flames.

In summary, the Vermont Castings RDVOD series – including models 3399, 3350, 3360, 3390, and 3369 – exemplifies high efficiency, exquisite craftsmanship, and thoughtful technology. With their combination of aesthetic appeal and functional performance, they offer an optimal heating solution for today’s homeowners seeking comfort and elegance in their living spaces.