Real Fyre G9 Vent-Free Gas Burner System
Real Fyre G9-20/24/30-12 Vent-Free Burner with On/Off Remote
The Real Fyre G9-20/24/30-12 Vent-Free Gas Burner System is designed for compatible 20", 24", or 30" Real Fyre vent-free gas log sets and provides up to 36,000 BTU/hr of supplemental heat. The Series 12 configuration adds convenient remote On/Off burner control, while an integrated Oxygen Depletion Sensor (ODS) safety pilot monitors available room oxygen during operation.
Series
G9
Model
G9-20/24/30-12
Compatible Log Sizes
20", 24", 30"
Maximum Input
36,000 BTU/hr
Control
Series 12 On/Off Remote
Safety Pilot
ODS
Fuel Options
Natural Gas or Propane
Log Set Included
No
Important: Compatible Real Fyre Gas Log Set Required – Sold Separately
The G9-20/24/30-12 is the burner system. A compatible Real Fyre 20", 24", or 30" gas log set is required to complete the installation and is purchased separately.
Shop Real Fyre Log Sets for G9 Vent-Free Burner System
Remote-Controlled Supplemental Heat for Compatible G9 Gas Logs
The Real Fyre G9 combines vent-free heating capability, multiple compatible log sizes, and remote On/Off control in one burner platform.
The burner is rated up to 36,000 BTU/hr and is designed for compatible 20", 24", and 30" Real Fyre gas log sets.
The Series 12 control package allows the main burner to be switched On or Off from the supplied remote without reaching into the fireplace.
The G9 is available in separate Natural Gas and Propane configurations and must be ordered for the fuel supplied to the installation location.
Important distinction: The G9-20/24/30-12 is an On/Off remote model. Variable flame-height adjustment is associated with Series 15 controls and should not be attributed to this Series 12 configuration.
Real Fyre G9-20/24/30-12 at a Glance
Manufacturer
Robert H. Peterson Co.
Product Type
Vent-Free Gas Burner System
Control Type
Remote On/Off
Maximum Input
36,000 BTU/hr
Fuel Options
Natural Gas or Propane
Safety System
Oxygen Depletion Sensor
Heating Application
Supplemental Heating
Is the Real Fyre G9-20/24/30-12 Right for Your Fireplace?
Best For
- Compatible fireplaces sized for a 20", 24", or 30" G9 log set.
- Buyers who want simple remote On/Off burner operation.
- Natural Gas installations using the appropriate G9 model.
- Propane installations using the appropriate G9 model.
- Qualifying vent-free applications where permitted.
- Qualifying vented decorative applications.
- Homeowners seeking supplemental rather than primary heating.
- Installations where adequate combustion and ventilation air can be provided.
Consider Another System If
- You want remote variable flame-height adjustment.
- You need electronic flame modulation rather than simple On/Off operation.
- Your fireplace does not meet the minimum dimensions.
- Your fireplace manufacturer prohibits unvented burners.
- You need to field-convert between Natural Gas and Propane.
- You expect the decorative logs to be included.
- You need a primary whole-home heating source.
Why Choose the Real Fyre G9-20/24/30-12?
36,000 BTU Maximum Input
The G9 is rated up to 36,000 BTU/hr for compatible 20", 24", and 30" configurations.
Series 12 Remote Control
The supplied remote system provides convenient On/Off operation of the main burner.
Three Compatible Log Sizes
The same burner platform supports compatible 20", 24", and 30" Real Fyre G9 log-set configurations.
ODS Safety Pilot
The Oxygen Depletion Sensor monitors available oxygen and is designed to shut down the burner before oxygen drops below 18%.
Natural Gas or Propane
Dedicated fuel-specific configurations are available for different property gas supplies.
Dual Certification
The G9 is certified for qualifying unvented room-heater and vented decorative-appliance installations.
Choose the Correct G9 Size for Your Fireplace
Fireplace sizing is one of the most important buying considerations for the G9 system.
| Compatible Log Size |
Minimum Front Width |
Minimum Rear Width |
Minimum Depth |
Minimum Height |
| 20" |
28" |
24" |
14" |
17" |
| 24" |
32" |
24" |
14" |
17" |
| 30" |
36" |
28" |
14" |
17" |
Measure before ordering: Do not choose the G9 log size from nominal fireplace width alone. Verify front width, rear width, depth, and height before selecting the compatible log set.
Heating Output
| Compatible Log Size |
Natural Gas High |
Propane High |
| 20" |
36,000 BTU/hr |
36,000 BTU/hr |
| 24" |
36,000 BTU/hr |
36,000 BTU/hr |
| 30" |
36,000 BTU/hr |
36,000 BTU/hr |
Series 12 clarification: Manufacturer technical data lists a 21,000 BTU/hr low setting for Series 15 variable-flame models. The G9-20/24/30-12 is an On/Off remote model and should not be represented as having that adjustable low setting.
Natural Gas or Propane – Select the Correct Version
The G9 burner is available in separate Natural Gas and Propane configurations.
Natural Gas
Select the Natural Gas configuration when the property gas supply is NG and matches the burner rating plate.
Propane
Select the Propane configuration when the property gas supply is LP and matches the burner rating plate.
No field fuel conversion: Natural Gas and Propane configurations are fuel-specific. Field conversion between the two fuels is not permitted.
If the fuel available at the property does not match the burner rating plate, do not install the burner.
Gas Pressure Requirements
| Requirement |
Natural Gas |
Propane |
| Minimum Inlet Pressure |
5" w.c. |
11" w.c. |
| Maximum Inlet Pressure |
10.5" w.c. |
13" w.c. |
| Outlet Pressure |
3.5" w.c. |
10" w.c. |
The manufacturer specifies a minimum 1/2" interior-diameter gas supply pipe. Gas runs longer than 20 feet may require a larger line.
Gas-system planning: Pipe sizing, fuel type, supply pressure, and regulator requirements should be verified as part of professional installation.
Series 12 On/Off Remote Control
The G9-20/24/30-12 uses Real Fyre's Series 12 remote-control configuration.
Remote On/Off
Switch the main burner On or Off without reaching into the fireplace.
Remote Transmitter
Uses one 12V battery.
Remote Receiver
Uses four AA batteries.
Included Batteries
The manufacturer documentation identifies the required transmitter and receiver batteries as included.
Receiver Cover
The remote kit includes the receiver cover specified by the manufacturer.
Decorative Heat Shield
A decorative heat shield is included as part of the Series 12 installation arrangement.
No variable flame control: This remote provides On/Off operation. Variable flame-height adjustment belongs to Series 15 models.
Oxygen Depletion Sensor Safety Pilot
The G9 includes an Oxygen Depletion Sensor (ODS) safety pilot.
According to the manufacturer, the ODS monitors available oxygen in the room and is designed to shut the burner down before the oxygen level falls below 18%.
The pilot can only be relit after sufficient fresh air is available.
ODS does not replace ventilation: Adequate combustion air, correct room sizing, proper installation, and routine maintenance remain required.
Vent-Free Room Size & Combustion-Air Requirements
Because the G9 is an unvented gas-fired heater when operated vent-free, it uses oxygen from the room.
The manufacturer identifies an unconfined space as providing at least 50 cubic feet of room volume per 1,000 BTU/hr of the combined input rating of gas appliances installed in the space.
Room-volume formula:
Room Length × Room Width × Room Height × 20 = Maximum BTU Allowed
For a 36,000 BTU G9 installation with no other gas-burning appliances in the room, the manufacturer's example corresponds to at least 1,800 cubic feet of qualifying room volume.
If the space is smaller, additional combustion and ventilation provisions are required according to the manufacturer instructions and applicable codes.
Approved Fireplace Applications
The Real Fyre G9 is designed for installation only in qualifying fireplace applications identified by the manufacturer.
Masonry Fireplace
A qualifying solid-fuel-burning masonry fireplace.
UL-127 Factory-Built Fireplace
A qualifying factory-built fireplace whose instructions permit the installation.
Listed Ventless Firebox
A listed ventless firebox enclosure that satisfies Real Fyre's requirements.
Do not install the G9 in a factory-built fireplace whose instructions state that it has not been tested or should not be used with unvented burner systems.
Before Installation
When the G9 is installed in an existing solid-fuel-burning fireplace, the chimney flue, damper, and firebox should be thoroughly cleaned of soot, creosote, ash, and loose paint by a qualified chimney cleaner.
Older fireplaces may require repair before the burner system is installed.
Clean Firebox
Remove soot, creosote, ash, and loose debris.
Level Fireplace Floor
The installation surface should be level, clean, and smooth.
Center the Burner
The burner should be centered according to the manufacturer installation instructions.
Professional Installation
Installation and service must be performed by a qualified professional service technician.
Minimum Clearances to Combustibles
| Area |
Minimum Clearance |
| Sidewalls |
6" from each side of fireplace opening |
| Ceiling |
42" above top of fireplace opening |
| Noncombustible Material Above Fireplace Without Hood |
12" minimum |
| Noncombustible Material Above Fireplace With Hood |
10" minimum |
Additional mantel, flooring, fireplace hood, and combustible-projection requirements apply.
If minimum clearances cannot be met: The manufacturer states that the burner must be operated with the chimney flue damper open according to the applicable instructions.
What's Included with the G9-20/24/30-12?
G9 Burner Assembly
Main burner system for compatible G9 gas logs.
Fuel-Specific ODS Pilot
Safety pilot matched to the selected fuel configuration.
Control Valve
Part of the Series 12 burner-control system.
Toggle Switch
Included operating component.
Piezo Igniter
Provides pilot ignition as part of the burner system.
Flex Connector & Adapter
Included for applicable gas connection setup.
Remote Kit
Receiver, transmitter, batteries, and plastic receiver cover.
Decorative Heat Shield
Included with the remote installation arrangement.
Damper Clamp
Included for applicable vented operating configurations.
Glowing Embers
Included decorative burner media.
Bryte Coals
Included decorative burner media.
Lava Granules
Included decorative media.
Not included: The compatible Real Fyre decorative gas log set is required and sold separately.
Proper Log Placement Matters
Correct installation of the separately purchased gas logs is essential to proper G9 operation.
Correct Log Setup
- Follow the placement instructions supplied with the exact log set.
- Maintain adequate spacing between individual logs.
- Keep each log stable and properly seated.
- Periodically verify that the logs have not shifted.
- Maintain the manufacturer's specified ember arrangement.
Do Not
- Rearrange the logs only for appearance.
- Allow flames to strike the logs.
- Add additional embers beyond the specified setup.
- Ignore continuing soot accumulation.
- Operate with unstable or improperly seated logs.
If soot appears outside the firebox: Turn the burner off and have the system inspected by a qualified professional.
Operating Considerations
Attended Appliance
Adults must be present whenever the G9 is operating.
Supplemental Heat
The appliance is intended for supplemental heating rather than primary home heating.
Glass Doors Fully Open
During vent-free operation, fireplace glass doors must remain fully open.
No Solid Fuel
Do not burn wood or other solid fuels while the G9 system is installed.
Avoid Drafts
Drafts blowing into or around the fireplace can affect burner operation.
Keep Flammables Away
Keep combustible materials, gasoline, and flammable vapors or liquids away from the appliance.
Do not leave unattended: The G9 should not be left burning unattended or while anyone is sleeping.
Vent-Free Moisture & Condensation
Vent-free operation produces water vapor as part of normal combustion.
If condensation develops during extended operation, the manufacturer advises increasing ventilation, such as opening the chimney damper or a window as appropriate.
Bedroom Installation Restriction
Unvented bedroom restriction: The manufacturer states that an unvented room heater rated above 10,000 BTU/hr must not be installed in a bedroom. The G9 is rated up to 36,000 BTU/hr.
Cleaning & Maintenance
Routine cleaning and professional service are required to keep the G9 burner and ODS system operating properly.
Annual Professional Service
The appliance must be inspected and serviced at least annually by a qualified professional service technician.
Burner Ports
Burner ports must remain clean and unobstructed.
ODS Pilot
The Oxygen Depletion Sensor pilot must remain clean and in proper operating condition.
Air Passages
Keep circulating-air and combustion-air passages free from debris.
Control Compartment
Keep control components free of lint, dust, pet hair, and other buildup.
More Frequent Cleaning
Additional maintenance may be required in environments with carpeting fibers, pets, dust, or airborne particles.
If sooting occurs: Discontinue use until the cause has been identified and corrected.
Certifications
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 the applicable manufacturer requirements.
Local-code check: State and local codes can restrict or prohibit vent-free heater installation or operation. Verify applicable requirements before installation.
Real Fyre G9 Warranty Highlights
| Peterson Unvented Burner |
10 Years for Indoor Use, Excluding Valves, Pilots & Controls |
| Valves, Pilots & Controls |
1 Year, Excluding Batteries |
Warranty guidance: Coverage remains subject to the manufacturer's complete terms, including proper installation, maintenance, operation, proof of purchase, exclusions, and use of specified Peterson components.
Complete Real Fyre G9-20/24/30-12 Technical Specifications
| Brand |
Real Fyre |
| Manufacturer |
Robert H. Peterson Co. |
| Series |
G9 |
| Model |
G9-20/24/30-12 |
| Product Type |
Vent-Free Gas Burner System |
| Control Series |
Series 12 |
| Control Type |
On/Off Remote |
| Compatible Log Sizes |
20", 24", 30" |
| Maximum Input |
36,000 BTU/hr |
| Fuel Options |
Natural Gas or Propane |
| Field Fuel Conversion |
Not Permitted |
| Safety Pilot |
Oxygen Depletion Sensor / ODS |
| Remote Receiver Batteries |
4 AA |
| Remote Transmitter Battery |
1 × 12V |
| Minimum Gas Supply Pipe |
1/2" Interior Diameter |
| NG Minimum Inlet Pressure |
5" w.c. |
| NG Maximum Inlet Pressure |
10.5" w.c. |
| NG Outlet Pressure |
3.5" w.c. |
| LP Minimum Inlet Pressure |
11" w.c. |
| LP Maximum Inlet Pressure |
13" w.c. |
| LP Outlet Pressure |
10" w.c. |
| Unvented Certification |
ANSI Z21.11.2 |
| Vented Certification |
ANSI Z21.60 |
| Heating Application |
Supplemental Heating |
| Log Set Included |
No |
| Professional Installation |
Required |
Minimum Fireplace Dimensions
| Compatible Log Size |
Front Width |
Rear Width |
Depth |
Height |
| 20" |
28" |
24" |
14" |
17" |
| 24" |
32" |
24" |
14" |
17" |
| 30" |
36" |
28" |
14" |
17" |
Flame Authority Expert Recommendation
Choose the Real Fyre G9-20/24/30-12 when you want a vent-free-capable burner with straightforward remote On/Off control and compatibility with multiple Real Fyre gas-log sizes.
Its 36,000 BTU maximum input, Series 12 remote, ODS safety pilot, Natural Gas and Propane availability, and 20"/24"/30" log compatibility make it a flexible platform for qualifying supplemental-heating installations.
The most important step is selecting the configuration by actual fireplace size. Verify the front width, rear width, depth, and height before selecting the log size, then confirm the correct fuel version and local vent-free requirements.
If remote flame-height adjustment is important, consider a compatible Series 15 G9 configuration instead; the Series 12 remote is On/Off only.
Official Manufacturer Resources
Real Fyre Vent-Free Catalog
G9 configurations, compatible log sizes, fuel options, controls, product-family information, and general specifications.
Real Fyre G9 Burner Instructions
Fireplace sizing, fuel requirements, gas pressures, ODS safety, room-volume calculations, clearances, remote installation, vent-free operation, maintenance, and service guidance.
Real Fyre G9-20/24/30-12 FAQs
Does the Real Fyre G9-20/24/30-12 include the gas logs?
No. The G9-20/24/30-12 is the burner system. A compatible Real Fyre 20", 24", or 30" gas log set is required and sold separately.
What size fireplace do I need for the Real Fyre G9?
A 20" configuration requires at least 28" front width × 24" rear width × 14" depth × 17" height. A 24" configuration requires 32" × 24" × 14" × 17". A 30" configuration requires 36" × 28" × 14" × 17".
How many BTUs does the Real Fyre G9 produce?
The G9 is rated up to 36,000 BTU/hr for compatible 20", 24", and 30" configurations in both Natural Gas and Propane versions.
Does the Series 12 G9 have a low flame setting?
No adjustable low flame setting is identified for this Series 12 On/Off configuration. The manufacturer's 21,000 BTU low setting applies to Series 15 variable-flame models.
Is the Real Fyre G9 available for Natural Gas and Propane?
Yes. Separate Natural Gas and Propane configurations are available. Order the version matching the fuel supplied to the fireplace.
Can I convert a Natural Gas G9 burner to Propane?
No. Field conversion is not permitted. The burner's rating plate fuel must match the property's gas supply.
Does the G9-20/24/30-12 come with a remote?
Yes. The Series 12 configuration includes a remote receiver, transmitter, batteries, and receiver cover as identified by the manufacturer.
Can I adjust flame height with the Series 12 remote?
No. The Series 12 remote provides On/Off operation. Variable flame-height adjustment is associated with Series 15 controls.
Does the Real Fyre G9 have an Oxygen Depletion Sensor?
Yes. The G9 includes an ODS safety pilot designed to shut the burner down before available room oxygen falls below 18%.
Does the Real Fyre G9 require a chimney?
The G9 is certified for both qualifying unvented room-heater and vented decorative-appliance installations. The required configuration depends on the fireplace, manufacturer instructions, local codes, and whether vent-free operation is permitted.
Can the Real Fyre G9 be installed in any fireplace?
No. The manufacturer identifies qualifying masonry fireplaces, qualifying UL-127 factory-built fireplaces, and listed ventless firebox enclosures. Do not install it in a factory-built fireplace that prohibits unvented burners.
Can I install the G9 myself?
No. The manufacturer requires installation and service by a qualified professional service technician.
Can the G9 be used as my home's primary heater?
No. The manufacturer identifies the G9 as a supplemental heating appliance rather than a primary heating source.
Can the G9 be installed in a bedroom?
Not as an unvented room heater at this input level. The manufacturer states that an unvented room heater rated above 10,000 BTU/hr must not be installed in a bedroom.
Can I operate the G9 with fireplace glass doors closed?
No. During vent-free operation, fireplace glass doors must remain fully open.
How much room volume does a 36,000 BTU vent-free G9 require?
The manufacturer uses 50 cubic feet of room volume per 1,000 BTU/hr to define an unconfined space. For a 36,000 BTU appliance with no other gas appliances in the room, the example requirement is 1,800 cubic feet.
What gas pressure does the Natural Gas G9 require?
The supplied manufacturer information lists 5" w.c. minimum inlet pressure, 10.5" w.c. maximum inlet pressure, and 3.5" w.c. outlet pressure for Natural Gas.
What gas pressure does the Propane G9 require?
The supplied manufacturer information lists 11" w.c. minimum inlet pressure, 13" w.c. maximum inlet pressure, and 10" w.c. outlet pressure for Propane.
How often should the Real Fyre G9 be serviced?
The burner must be inspected and serviced at least annually by a qualified professional service technician. More frequent cleaning may be necessary where lint, dust, pet hair, or other particles accumulate.
What should I do if the G9 begins producing soot?
Stop using the appliance until the cause has been identified and corrected. The manufacturer lists possible causes such as gas-pressure problems, drafts, blocked air openings, improper log or media placement, debris, or an incorrect fuel configuration.
What warranty applies to the Real Fyre G9 burner?
The supplied manufacturer documentation states that Peterson unvented burners, excluding valves, pilots, and controls, are warranted for 10 years when used indoors. Valves, pilots, and controls are warranted for one year, excluding batteries, subject to complete warranty terms.
Before You Order
Confirm Before Purchase
- You specifically want the G9 Series 12 On/Off remote configuration.
- You have selected a compatible 20", 24", or 30" Real Fyre log set separately.
- Your fireplace meets the dimensions for the selected log size.
- The burner fuel matches your Natural Gas or Propane supply.
- You understand that field fuel conversion is not permitted.
- The intended vent-free or vented configuration is permitted.
- Adequate combustion and ventilation air can be provided.
- The required sidewall, ceiling, mantel, hood, and flooring conditions can be met.
- Qualified professional installation has been arranged.
- Annual professional service is planned.
Do Not Assume
- That the gas logs are included.
- That the Series 12 remote adjusts flame height.
- That every fireplace can use the G9.
- That a 20", 24", or 30" nominal opening automatically fits the matching log set.
- That Natural Gas and Propane models can be field converted.
- That vent-free operation requires no room-volume or ventilation planning.
- That glass fireplace doors may remain closed during vent-free operation.
- That the G9 is intended as primary heat.
- That annual professional maintenance is optional.
Final planning check: Use the Real Fyre G9 Burner Instructions to confirm fireplace dimensions, fuel selection, gas pressures, combustion-air requirements, clearances, remote installation, ODS safety, vent-free or vented operation, maintenance, and professional installation before ordering.
