Hargrove 18" Frontier Blaze Vent-Free Natural Gas Log Set
The Hargrove 18" Frontier Blaze set lays two front logs over a glowing ember bed and lets the flame peek through a crown of top twigs, the way a split-wood fire looks once it gets going. It runs vent-free and puts out up to 32,000 Btu/hr on natural gas.
This listing covers the 18" set, model EFFB18, in natural gas or propane with a manual, millivolt, variable flame or electronic ignition valve. 24" and 30" sizes are available too.
The Hargrove Frontier Blaze 18": Flames Through the Twigs
Frontier Blaze is one of Hargrove's split wood style sets. The twigs on top break the flame up into tips and gaps, and the ember bed glows under the two front logs, so it reads like a real stacked fire from across the room. It fits a living room or cabin-style fireplace. See Hargrove's other styles in our gas logs collection.
Hargrove's vent-free sets run as an unvented room heater in a masonry or manufactured wood-burning fireplace with the flue damper closed, or in a vent-free fireplace listed and approved with Hargrove products. Because the Frontier Blaze is dual listed, it can also burn as a vented log set in a wood-burning fireplace with the chimney damper fully or partially open.
The 18" set needs an opening at least 16" high, 28" wide at the front, 23" wide at the back and 12" deep. Hargrove asks for 15" from the opening to a combustible side wall, 42" to a combustible ceiling and 6" to each side of a mantel. Run vent-free, the room has to be an unconfined space of at least 50 cubic feet for every 1,000 Btu/hr of gas appliances in it, so this set alone needs about 1,600 cubic feet on natural gas.
A qualified gas installer sets it up with a manual shutoff valve in the supply line, plus an external regulator on a propane tank. It is not for bedrooms, bathrooms or recreational vehicles, and glass fireplace doors have to be fully open whenever it runs. Before you buy, check that your local code allows unvented gas appliances; our direct vent vs. vent-free guide explains where they are restricted.
Features
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Flame through the twigs: many top twigs let the flame show through in tips and gaps.
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Glowing ember bed: embers glow under two front logs.
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Dual listed: vent-free with the damper closed or vented with the damper open.
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Four valve choices: manual, millivolt, variable flame or electronic ignition.
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Natural gas or propane: up to 32,000 Btu/hr on natural gas and 32,000 Btu/hr on propane.
Package Contents
- Frontier Blaze 18" log set
- Vent-free burner and grate with the valve you choose, factory installed
- Oxygen depletion sensor (ODS) pilot
- Ember material for the front burner
- Bag of volcanic cinder to cover the fireplace floor around the set
- On/off switch with the millivolt (2C) valve
- Variable remote with the electronic ignition (3E) valve
What to Order With It
Supplied by your installer:
- Gas supply line with a manual shutoff valve
- External regulator on the tank for propane sets
For the millivolt (2C) set, pick a control:
For the variable flame (1E) set:
For the electronic ignition (3E) set (variable remote already included):
Optional:
Specifications
| Model numbers |
EFFB18N1G, EFFB18N2C, EFFB18N1E, EFFB18N3E (natural gas); swap the N for P for propane |
| Set size |
18" |
| Gas |
Natural gas or liquid propane (N or P in the model number) |
| Valve options |
1G manual valve; 2C millivolt valve, remote ready; 1E variable flame valve, remote ready; 3E electronic ignition valve with variable remote |
| Maximum input |
32,000 Btu/hr natural gas; 32,000 Btu/hr propane |
| Minimum input |
24,000 Btu/hr natural gas; 23,500 Btu/hr propane |
| Gas inlet pressure |
Natural gas 5" to 10.5" WC; propane 11" to 13" WC |
| Regulator pressure |
Natural gas 4" WC; propane 10" WC |
| Minimum fireplace opening |
16" high, 28" front width, 23" rear width (at depth), 12" deep |
| Clearances to combustibles |
15" to side walls, 42" to the ceiling, 6" from the opening to each side of a mantel |
| Combustible mantel height above the opening (no hood) |
26" for a 2-1/2" to 6" deep mantel, 28" for 8" deep, 30" for 10" deep |
| Combustible mantel height with a hood (4" minimum projection) |
8" for 2-1/2" deep, 12" for 6" deep, 16" for 10" deep |
| Certification |
ANSI Z21.11.2 vent-free and ANSI Z21.60 vented (dual listed) |
| Elevation |
Ratings up to 2,000 ft; reduce input 4% per 1,000 ft above that |
| Not for |
Bedrooms, bathrooms or recreational vehicles |
| Weight |
50 lb |
Choosing a Valve
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Manual (1G): a standing pilot safety valve. You light the pilot and set the flame with a knob at the set. Hargrove offers no remote for the manual valve.
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Millivolt (2C): a standing pilot valve that is remote ready and ships with an on/off switch. It works with Hargrove's millivolt remotes, wall switch, wall thermostat and bark chip or pine cone switches.
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Variable flame (1E): remote ready, with flame height you can raise and lower from Hargrove's variable flame remotes.
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Electronic ignition (3E): comes with a variable remote that lights the pilot and burner and raises or lowers the flame. There is no standing pilot; it shuts off when the burner is turned off.
Bring the Frontier Blaze Home with Dreamwood Living
The 18" Frontier Blaze suits anyone who likes the busy look of a split-wood fire and wants the heat without the woodpile. Reach out to our team to confirm sizing and pick your valve.
FAQs
Can I run the Frontier Blaze with the chimney damper open?
Yes. The set is dual listed, so in a wood-burning fireplace it can run as a vented log set with the damper fully or partially open. Hargrove notes that mantel clearances do not apply when it is installed as a vented appliance in a fireplace that can burn wood. With the damper closed it runs vent-free.
How large does the room need to be?
For vent-free use the room must be an unconfined space: at least 50 cubic feet per 1,000 Btu/hr of all the gas appliances in it. At 32,000 Btu/hr on natural gas, this set alone needs about 1,600 cubic feet, and adjoining rooms joined by doorless passageways or ventilation grills count. Direct vent appliances are left out of the total.
Which remote do I need?
It depends on the valve: the millivolt (2C) set works with Hargrove's millivolt remotes and switches; the variable flame (1E) set takes the RC-S6V-MX, RC-S6V-MXT or RC-R300; the electronic ignition (3E) set already includes a variable remote; the manual (1G) set has no remote option. Our millivolt vs. electronic ignition guide covers how standing pilot and electronic ignition systems differ.
Documents & Downloads
Warranty
Hargrove limited warranty, from the installation and operating manuals:
- Logs: limited lifetime warranty against manufacturing defects or breakage. Breakage from excessive handling after the set has been installed and fired is not covered.
- Burner and grate: free replacement if either fails from deterioration within 5 years of the verified purchase date.
- Valves, remote controls and switching devices: 2 years against manufacturing defects.
- All other parts: 2 years.
- Hargrove must be notified within 30 days of finding a defect. Labor, removal and reinstallation, shipping and service calls are not covered.
