Grand Canyon Vulcan Variable Vent Less Burner
Grand Canyon Vulcan 24"/30" Variable Vent Less Burner System – VFVUL24/30V
The Grand Canyon Vulcan VFVUL24/30V Variable Vent Less Burner System is designed for compatible 24-inch and 30-inch Grand Canyon vent-free gas log sets and provides adjustable flame operation from 19,000 BTU on low to 37,000 BTU on high. Available in dedicated Natural Gas and Propane versions, this Variable Control configuration combines a continuous ODS safety pilot, manual Piezo ignition, remote flame adjustment, and thermostatic operation.
Series
Vulcan
Model Family
VFVUL24/30V
Compatible Logs
24" or 30"
BTU Range
19,000–37,000
Control Type
Variable Control
Remote
Included
Pilot
Continuous ODS
Gas Logs Included
No
Important: Burner System Only – Gas Logs Sold Separately
The VFVUL24/30V is the Vulcan burner system. A compatible Grand Canyon 24" or 30" vent-free gas log set is required to complete the fireplace presentation and must be purchased separately.
Variable Flame Control with Thermostatic Remote Operation
The VFVUL24/30V is designed for buyers who want more operating control than a basic On/Off burner while retaining a continuous standing ODS pilot.
The Variable Control system allows the flame height to be adjusted remotely and also supports thermostatic operation based on the room temperature detected by the remote.
The same burner platform supports compatible 24-inch or 30-inch Grand Canyon vent-free gas log sets, provided the fireplace meets the minimum dimensions for the selected log size.
System planning: Choose the burner fuel, compatible log size, log style, and fireplace configuration together. Natural Gas and Propane versions are separate factory configurations.
Grand Canyon VFVUL24/30V at a Glance
Brand
Grand Canyon Gas Logs
Product Type
Vent-Free Gas Burner System
Control Type
Variable Control
Remote Control
On/Off Hi/Lo with Thermostatic Operation
Safety Pilot
Oxygen Depletion Sensing / ODS
Compatible Log Sizes
24" or 30"
Is the Grand Canyon VFVUL24/30V Right for Your Fireplace?
Best For
- Buyers wanting remote variable flame-height control.
- Users who want thermostatic operation.
- Compatible 24" or 30" Grand Canyon vent-free gas log sets.
- Natural Gas installations using VFVUL24/30VN.
- Propane installations using VFVUL24/30VP.
- Qualifying vent-free installations where permitted.
- Approved vented decorative installations.
- Fireplaces meeting the required dimensions for the selected log size.
Consider Another Burner If
- You expect decorative gas logs to be included.
- Your fireplace does not meet the required dimensions.
- You need electronic ignition rather than manual Piezo ignition.
- You need to field-convert between Natural Gas and Propane.
- Your fireplace manufacturer prohibits unvented gas logs.
- Vent-free use is prohibited at the installation location.
- You cannot provide adequate combustion and ventilation air.
Why Choose the Grand Canyon Vulcan VFVUL24/30V?
Variable Flame Control
Adjust burner flame height from low to high using the included remote-control system.
Thermostatic Operation
The remote can regulate burner operation in response to room temperature.
24" & 30" Log Compatibility
The same burner platform supports multiple compatible Grand Canyon log-set sizes.
19,000–37,000 BTU Range
Both Natural Gas and Propane models operate across the same published input range.
ODS Safety Pilot
The continuous Oxygen Depletion Sensing pilot monitors available room oxygen.
Deep Ember Presentation
Included lava rock, glowing ember material, and platinum embers support a traditional gas-fire appearance.
Variable Flame & Thermostatic Remote Control
The Variable Control system distinguishes the VFVUL24/30V from a basic fixed-flame or On/Off-only burner configuration.
Manual Mode
Use the remote to turn on the burner and manually raise or lower the flame height.
The flame can be increased, reduced, or shut off using the remote controls.
Thermostat Mode
Select the desired room temperature through the remote.
The control system then responds to the room temperature detected by the remote and regulates burner operation accordingly.
Operating guidance: Follow the manufacturer's instructions for pairing, remote operation, pilot use, thermostat settings, and flame adjustment.
Natural Gas & Propane Models
| Model |
Fuel Type |
Low Input |
High Input |
| VFVUL24/30VN |
Natural Gas |
19,000 BTU |
37,000 BTU |
| VFVUL24/30VP |
Liquid Propane |
19,000 BTU |
37,000 BTU |
No field fuel conversion: Grand Canyon states that the VFVUL appliance is not field-convertible between Natural Gas and Propane. Order the model that matches the installed fuel supply.
What's Included with the VFVUL24/30V?
Vulcan Burner Assembly
Main 24"/30" burner system.
Variable Control Valve
Control system for variable burner operation.
Variable ODS Pilot
Continuous Oxygen Depletion Sensing pilot system.
On/Off Hi/Lo Remote
Remote flame adjustment and thermostatic operation.
Connection Components
Applicable fittings and burner connection components.
6 lb. Lava Rock
Decorative media for the fireplace presentation.
Glowing Ember Material
Ember media used to enhance the fire appearance.
Platinum Embers
Additional ember material supplied with the burner system.
Damper Clamp
Included for applicable vented installation requirements.
Not included: Compatible Grand Canyon gas logs are sold separately.
Minimum Fireplace Size Requirements
The minimum fireplace opening depends on whether the VFVUL24/30V is paired with a 24-inch or 30-inch compatible gas log set.
| Compatible Log Size |
Minimum Front Width |
Minimum Rear Width |
Minimum Depth |
Minimum Height |
| 24" Logs |
28" |
20" |
14" |
18" |
| 30" Logs |
34" |
20" |
14" |
18" |
Measure all four dimensions: A fireplace large enough for a 24-inch log set is not automatically large enough for the 30-inch configuration.
24" vs. 30" Gas Log Compatibility
Choose 24" Logs
Use a compatible 24" Grand Canyon log set when the fireplace provides at least:
- 28" front width
- 20" rear width
- 14" depth
- 18" height
Choose 30" Logs
Use a compatible 30" Grand Canyon log set when the fireplace provides at least:
- 34" front width
- 20" rear width
- 14" depth
- 18" height
Gas Pressure Specifications
| Specification |
Natural Gas |
Propane |
| Typical Outlet Pressure on High |
3.5" w.c. |
10.0" w.c. |
| Minimum Inlet Pressure |
5" w.c. |
11" w.c. |
| Maximum Inlet Pressure |
10.5" w.c. |
13" w.c. |
Professional gas planning: Supply piping, pressure, connection, testing, and burner installation must be completed according to the manufacturer instructions.
Oxygen Depletion Sensing Safety Pilot
The VFVUL24/30V uses a continuous Oxygen Depletion Sensing (ODS) pilot.
Grand Canyon states that the ODS monitors available oxygen in the room and shuts the burner system down before oxygen falls below 18%.
ODS does not replace ventilation: Adequate combustion air, room volume, ventilation, maintenance, and correct installation remain required for vent-free operation.
Vented & Vent-Free Certification
ANSI Z21.11.2
Certified as an unvented room heater for qualifying installations.
ANSI Z21.60
Certified as a vented decorative appliance when installed according to applicable requirements.
Local requirements control vent-free use: Certification does not mean unvented operation is permitted in every jurisdiction.
Compatible Fireplace Types
The manufacturer identifies qualifying installation in:
Masonry Fireplace
Qualifying solid-fuel-burning masonry fireplace.
UL 127 Factory-Built Fireplace
Qualifying factory-built fireplace whose instructions permit the installation.
Listed Ventless Firebox
Listed ventless firebox enclosure meeting Grand Canyon requirements.
Do not install the burner in a factory-built fireplace whose instructions prohibit use with unvented gas logs.
Vent-Free Combustion-Air Requirements
When operated vent-free, the burner uses room air for combustion.
Adequate combustion and ventilation air must be provided, and Grand Canyon does not permit unvented installation in a confined space unless additional combustion and ventilation provisions are made.
Installation planning: Room volume, other gas-burning appliances, unusually tight construction, altitude, and ventilation conditions can affect whether the space is suitable for vent-free operation.
Glass Fireplace Door Requirement
Glass fireplace doors must remain fully open during vent-free operation.
Grand Canyon states that the burner must not operate with the doors closed.
Fireplace Floor Requirements
The fireplace floor must be level, clean, and smooth.
If the fireplace has a recessed hearth, the floor must be raised with appropriate noncombustible material according to the manufacturer's installation instructions.
Compatible Grand Canyon Gas Log Sets
Complete the VFVUL24/30V with one of the compatible Grand Canyon vent-free gas log sets below. Gas logs are sold separately.
Professional Installation & Safety Requirements
Qualified Installation
Installation and service must be performed by qualified personnel.
Verify Fuel
The gas supply must match the burner's rating plate.
No Field Conversion
Do not convert the burner between Natural Gas and Propane.
Verify Fireplace Dimensions
Measure front width, rear width, depth, and height before selecting logs.
Provide Combustion Air
Adequate combustion and ventilation air are required for unvented operation.
Check Local Requirements
Verify whether vent-free operation is permitted in the installation location.
Use Approved Components
Use manufacturer-approved gas logs, controls, and accessories.
Keep Glass Doors Open
Fireplace glass doors must remain fully open during vent-free operation.
Supplemental Heating
The appliance is intended as supplemental heat rather than a home's sole heating system.
Care & Maintenance
Grand Canyon requires regular cleaning and professional service of the VFVUL burner system.
Annual Professional Service
The system should be inspected and serviced by a qualified professional at least annually.
Check the Logs
Verify that the compatible gas logs remain correctly positioned.
Clean Burner Areas
Remove dust and loose debris from burner and control areas.
Inspect the ODS Pilot
Keep the Oxygen Depletion Sensing pilot clean and unobstructed.
Inspect Burner Ports
Check burner ports for lint, dust, and other obstructions.
Verify Flame Pattern
Inspect the flame pattern during operation and correct abnormal conditions.
Before cleaning: Turn the burner off and allow the entire system to cool completely.
Complete Grand Canyon VFVUL24/30V Technical Specifications
| Brand |
Grand Canyon Gas Logs |
| Series |
Vulcan |
| Product Type |
Gas Burner System |
| Model Family |
VFVUL24/30V |
| Natural Gas Model |
VFVUL24/30VN |
| Propane Model |
VFVUL24/30VP |
| Fuel Options |
Natural Gas or Liquid Propane |
| Control Type |
Variable Control |
| Compatible Log Sizes |
24" or 30" |
| Natural Gas Input |
19,000 BTU Low / 37,000 BTU High |
| Propane Input |
19,000 BTU Low / 37,000 BTU High |
| Pilot Type |
Oxygen Depletion Sensing / ODS Pilot |
| Ignition |
Manual Piezo / Continuous Pilot |
| Flame Control |
Variable |
| Remote Control |
Included |
| Thermostatic Operation |
Yes |
| Gas Logs Included |
No – Sold Separately |
| Vented Certification |
ANSI Z21.60 |
| Unvented Certification |
ANSI Z21.11.2 |
| Minimum Fireplace with 24" Logs |
28" Front W × 20" Rear W × 14" D × 18" H |
| Minimum Fireplace with 30" Logs |
34" Front W × 20" Rear W × 14" D × 18" H |
| Field Fuel Conversion |
Not Permitted |
| Heating Application |
Supplemental Heating |
Grand Canyon Warranty Highlights
| Burner |
Lifetime Warranty Against Manufacturing Defects or Breakage for Qualifying Indoor Professionally Installed Applications |
| Valves, Remotes & Receivers |
2-Year Warranty |
| ODS Pilot Assemblies |
1-Year Warranty |
| Batteries |
Not Covered |
Warranty guidance: Coverage remains subject to Grand Canyon's complete warranty terms, original-purchaser requirements, professional installation conditions, and stated exclusions.
Flame Authority Expert Recommendation
Choose the Grand Canyon VFVUL24/30V when you want a Vulcan burner with remote variable flame control and thermostatic operation while retaining a continuous ODS safety pilot and manual Piezo ignition.
Its 19,000–37,000 BTU range, 24"/30" log compatibility, Natural Gas and Propane configurations, included remote, thermostatic operation, deep ember-bed media, and dual vented/vent-free certification make it a flexible option for qualifying supplemental-heating installations.
The most important decision is sizing the complete system correctly. Confirm the fireplace front width, rear width, depth, height, preferred 24" or 30" log set, fuel supply, local vent-free requirements, fireplace compatibility, and combustion-air conditions.
Select VFVUL24/30VN for Natural Gas or VFVUL24/30VP for Propane. Do not plan on converting the burner later because field conversion is not permitted.
Official Manufacturer Resources
Grand Canyon Vent Less Logs Catalog
Compatible vent-free log styles, available sizes, product-family information, and Vulcan burner options.
Grand Canyon Installation & User's Manual
Variable Control operation, fireplace sizing, BTU ratings, fuel requirements, gas pressure, ODS safety, combustion air, fireplace compatibility, vented and vent-free operation, maintenance, warranty, and professional installation.
Grand Canyon VFVUL24/30V FAQs
What is the Grand Canyon Vulcan VFVUL24/30V?
The VFVUL24/30V is a Variable Control gas burner system designed for compatible 24" or 30" Grand Canyon vent-free gas log sets. It is available in dedicated Natural Gas and Propane versions and operates from 19,000 to 37,000 BTU.
Are gas logs included with the VFVUL24/30V?
No. Compatible Grand Canyon 24" or 30" vent-free gas logs are required and sold separately.
What size gas logs work with the VFVUL24/30V?
The burner is designed for compatible 24" or 30" Grand Canyon vent-free gas log sets.
What is the difference between VFVUL24/30VN and VFVUL24/30VP?
VFVUL24/30VN is the Natural Gas model, while VFVUL24/30VP is the Liquid Propane model.
Can the VFVUL24/30V be converted from Natural Gas to Propane?
No. Grand Canyon states that field conversion is not permitted.
How many BTUs does the VFVUL24/30V produce?
Both fuel configurations operate from 19,000 BTU on low to 37,000 BTU on high.
Does the VFVUL24/30V include a remote?
Yes. The Variable Control model includes an On/Off Hi/Lo remote that supports flame adjustment and thermostatic operation.
Can the remote adjust flame height?
Yes. The Variable Control remote allows manual flame-height adjustment.
Does the VFVUL24/30V have thermostat mode?
Yes. The remote supports thermostatic operation based on the temperature detected at the remote.
What type of ignition does the VFVUL24/30V use?
The Variable Control configuration uses manual Piezo ignition with a continuous pilot.
What fireplace size is required for 24" logs?
The minimum fireplace size is 28" front width × 20" rear width × 14" depth × 18" height.
What fireplace size is required for 30" logs?
The minimum fireplace size is 34" front width × 20" rear width × 14" depth × 18" height.
What does the ODS pilot do?
The Oxygen Depletion Sensing pilot monitors room oxygen and, according to Grand Canyon, shuts the burner system down before oxygen falls below 18%.
Does the ODS eliminate the need for ventilation?
No. Proper combustion air, ventilation, room volume, installation, and maintenance are still required.
Can the VFVUL24/30V be used vent-free?
Yes, in qualifying installations where local codes, fireplace requirements, and combustion-air conditions permit unvented use.
Can the VFVUL24/30V also be installed as a vented appliance?
Yes. The system is also certified as an ANSI Z21.60 vented decorative appliance when installed according to applicable requirements.
What fireplace types are compatible?
The manufacturer identifies qualifying masonry fireplaces, qualifying UL 127 factory-built fireplaces, and listed ventless firebox enclosures.
Can fireplace glass doors remain closed?
No. Glass fireplace doors must remain fully open during vent-free operation.
What are the Natural Gas pressure requirements?
The source lists 5" w.c. minimum inlet pressure, 10.5" w.c. maximum inlet pressure, and approximately 3.5" w.c. outlet pressure on high.
What are the Propane pressure requirements?
The source lists 11" w.c. minimum inlet pressure, 13" w.c. maximum inlet pressure, and approximately 10.0" w.c. outlet pressure on high.
Does the VFVUL24/30V require professional installation?
Yes. Grand Canyon requires installation and service by qualified professional personnel.
Is the VFVUL24/30V intended as primary home heating?
No. Grand Canyon identifies the appliance for supplemental heating.
How often should the VFVUL24/30V be serviced?
A qualified professional service technician should inspect and service the system at least annually.
What warranty applies to the burner?
The source states a lifetime warranty against manufacturing defects or breakage for qualifying indoor professionally installed burner applications, subject to Grand Canyon's complete warranty terms.
What warranty applies to the valve, remote, and receiver?
The supplied warranty information lists 2-year coverage for valves, remotes, and receivers, subject to full manufacturer terms.
What warranty applies to the ODS pilot?
The supplied warranty information lists a 1-year warranty for ODS pilot assemblies.
Are batteries covered by the warranty?
No. Batteries are not covered by the manufacturer's warranty.
Before You Order
Confirm Before Purchase
- You specifically want the VFVUL24/30V Variable Control burner.
- You want remote variable flame adjustment and thermostatic operation.
- You will purchase a compatible 24" or 30" Grand Canyon gas log set separately.
- Your fireplace meets the dimensions for the selected log size.
- You have selected VFVUL24/30VN for Natural Gas or VFVUL24/30VP for Propane.
- You understand that field fuel conversion is not permitted.
- The intended vent-free or vented installation is permitted.
- The fireplace is an approved installation type.
- Adequate combustion and ventilation air can be provided.
- Glass doors can remain fully open during vent-free operation.
- Qualified professional installation and annual service are planned.
Do Not Assume
- That decorative gas logs are included.
- That every 24" or 30" fireplace opening fits the corresponding log size.
- That the burner uses electronic ignition.
- That Natural Gas and Propane models can be field converted.
- That vent-free operation is permitted everywhere.
- That an ODS pilot removes ventilation requirements.
- That fireplace glass doors can remain closed.
- That the burner is intended as whole-home primary heat.
- That professional installation or annual service is optional.
Final planning check: Use the Grand Canyon Vent Less Logs Catalog to select the compatible 24" or 30" log style, and the Grand Canyon Installation & User's Manual to verify fireplace sizing, Variable Control operation, fuel type, gas pressure, ODS safety, combustion-air requirements, vented or vent-free installation, maintenance, warranty, and professional installation.
