Real Fyre Mountain Birch Vented Gas Logs

Real Fyre Mountain Birch is a vented gas log set for a wood-burning fireplace that has a natural gas line. Birch-bark logs from the Designer series.

Who it's for

Right buyer. You have a wood-burning fireplace with a working chimney and a natural gas line, and you want the look of a real wood fire without hauling wood, from a match, a knob or a remote.

Wrong buyer. You want the fireplace to heat the room; vented logs send most of the heat up the chimney, and a vent-free set is the one for heat.

How it performs

The Mountain Birch set is a vented gas fire in a wood-burning fireplace: the burner runs under and through the logs, the flames are tall and yellow and move like a wood fire's, and the embers glow under them. The look depends on the burner as much as the logs.

Good to know

• Vented logs are decorative: the damper is open and most of the heat goes up the chimney. For heat, the vent-free version of this style is the one.
• The logs never burn away, but they char and darken where the flame touches; that is part of the look.
• Gas use is real: a 24-inch burner on high draws about what a large furnace does. Low is for long evenings.

Dimensions

Measure the inside of the firebox, not the old logs and not the mantel opening. You need four numbers: width at the front, width at the back wall, depth from front to back, and height.

Your firebox must be at least as large as the row for the burner and size you want. Every size needs 17 inches of height. If you are within an inch of a minimum, order the next size down: a set that is too big disturbs the draft and overheats the valve.

Minimum firebox size with a control (manual pilot or any remote)

Electronic On/Off Remote needs more room for its battery and switch box. Add 2 inches to the front and back width on the G45. The G45 rows for 42 inch and larger already include the control kit. On the G46, add 6 inches to the front and 4 inches to the back.

Minimum firebox size with Match Light (no valve beside the burner)

The chimney must be at least 15 feet tall, and the firebox floor cannot have an ash lip or a sunken hearth deeper than 3/4 inch. Sizes of 42 inch and larger are not factory-assembled: the burner ships with a separate control kit, and Peterson does not list those sizes with a testing agency, so check your local code before you order.

Clearances

A vented gas log set borrows the fireplace's own clearances: the mantel, hearth and side-wall rules of the wood-burning fireplace it goes into stay exactly as they were built and inspected. What the log set adds is the room the burner and the flames need inside the firebox, below, and three rules: the damper fixed fully open with the clamp supplied, glass doors open or removed whenever the burner runs, and nothing stored or draped within 3 feet of the front of the fireplace.

Documents

• G45 with a factory valve: installation and owner's manual
• G45 match light and kit-controlled: installation and owner's manual
• G46 burner page and manual
• G4 installation and owner's manual

Details

Warranty

Source: R.H. Peterson Real Fyre limited warranty, printed in the burner manual linked above. Register the set with Peterson after installation.

Heat

Figures are for burners with a control. G45 Match Light is rated slightly differently; the exact figure shows when you select it.

Choices and prices

Burner

The burner sits under the logs. It decides how the flame looks, how much gas the fire uses and which controls you can have. The Mountain Birch logs are the same on every burner.

G4 Glowing Ember

One burner pipe under the logs with a bed of glowing embers in front. The classic look at the lowest price, for sets up to 30 inch. It leaves the factory without a valve, so you either light it with a match or add a Real Fyre control kit that your installer fits to the burner.

G45 Triple-T

Adds a second burner across the front, so the embers glow brighter and the flames have more depth. With any control, sizes up to 36 inch arrive certified to ANSI Z21.60 with the valve already assembled and tested at the factory. At 42 inch and larger the control ships as a separate kit.

G46 Hidden Controls

The same style of flame as the G45, with the valve tucked behind the burner so you see logs and embers instead of hardware. It has a push-button igniter and uses a good deal less gas. It fits a narrower firebox than the G45 but needs 15 inches of depth. ANSI certified. Available for 18 to 30 inch sets.

Control

Match Light. There is no valve on the burner. You hold a long lighter at the burner and open the gas with your fireplace's wall or floor key, which also sets the flame height. Natural gas only. Some cities require a safety pilot instead, so check with your installer or building department.

Manual Safety Pilot. A small pilot flame stays lit, and you turn a knob at the burner to light the logs. If the pilot ever goes out, the valve shuts off the gas. No batteries and no wiring.

On/Off Remote. A standing pilot plus a handheld remote that turns the fire on and off. It keeps working in a power outage. The remote and receiver run on batteries that come in the box.

Variable Remote. Everything the On/Off Remote does, and the remote also raises and lowers the flame.

Electronic On/Off Remote. No standing pilot. Press On and the system sparks its own pilot, then lights the burner, so you are not burning gas on a pilot all season. It runs on batteries that come in the box and needs a slightly wider firebox (see the fit tables).

"Yes" means the burner arrives with the valve assembled at the factory. "Kit" means the control ships as a separate Real Fyre kit for your installer to fit to the burner. *Factory-assembled up to 36 inch; a kit at 42 inch and larger. At 42 inch there is no manual safety pilot, and at 48 and 60 inch the choices are Match Light, On/Off Remote and the 110-volt Electronic Variable Remote.

What arrives

• Log carton: the Mountain Birch log set with its placement guide. Sets of 36 inch and larger ship in more than one carton.
• Burner carton: burner, grate, glowing embers, sand for the burner pan, gas connector kit and damper clamp. Burners with a control also include the valve and regulator, already assembled. Remote versions include the handheld remote, receiver and batteries.
• Control kit carton: only with a G4 and a control, or a 42 inch or larger set with a control.

Cartons can arrive on different days. Do not start the installation until everything is there.

Installation

A vented set goes into a wood-burning fireplace with a working chimney and a gas line, by a licensed gas installer, in about two hours.

• Gas: a dedicated 1/2-inch line to a shutoff at the fireplace; natural gas at 5 to 7 inches of water column, propane at 11 to 13. The connector runs through a plate in the firebox floor or wall.
• Damper: fixed fully open with the clamp in the box. This is the rule that makes a vented set safe; the fire's exhaust goes up the chimney like a wood fire's.
• Doors: open or removed whenever the burner runs.
• Burner: set on the grate in the center of the firebox, the logs placed by the diagram in the box, embers scattered on the burner, sand or vermiculite in the pan for natural gas, lava rock for propane.
• Controls: a match-light burner uses the fireplace's key valve; a safety-pilot burner has its own valve and knob; an electronic burner takes batteries in the control box or a 110-volt outlet inside the firebox for the plug-in version, and the remote pairs once.
• Codes: match-light burners are not allowed in some cities; the installer knows which. Most jurisdictions want the inspection.

Planning the install

• For wood-burning fireplaces only, masonry or factory-built, with a working chimney. Not for vent-free fireboxes, direct-vent or B-vent gas fireplaces, or stoves.
• You need a natural gas line into the firebox, 1/2 inch inside diameter or larger, with a shut-off valve outside the firebox.
• The included clamp fixes the damper so it can never close completely. The damper must be fully open whenever the fire is on, glass doors fully open, and a screen in place.
• Installation is by a qualified gas professional. Have the chimney swept first and the set inspected once a year.
• Do not burn wood in the fireplace once the gas logs are installed, and do not leave the fire on unattended or while anyone is sleeping.
• In Massachusetts the installer must be a licensed plumber or gas fitter, and the damper has to be removed or fixed fully open.
• Above 2,000 feet elevation, add a note to your order. Peterson builds high-altitude versions.