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12409-2-0403
FIREPLACE PREPARATION
BEFORE INSTALLING THE APPLIANCE
• Turn off gas supply to fireplace or firebox.
• Have the fireplace floor and chimney professionally cleaned
to remove ashes, soot, creosote or other obstructions.
Have this cleaning performed annually after installation.
• Seal any fresh air vents or ash clean-out doors located on floor
or wall of fireplace. If not, drafting may cause pilot
outage or sooting. Use a heat-resistant sealant. Do not seal
chimney flue damper.
Install and operate the appliance as directed in this manual.
FOR FACTORY BUILT FIREPLACES
FREE OPENING AREA OF CHIMNEY DAMPER FOR
VENTING COMBUSTION PRODUCTS FROM DECORA-
TIVE APPLIANCES FOR INSTALLATION IN SOLID
FUEL BURNING FIREPLACES
Appliance Input Rate (BTU/hr)
20 30 40
Chimney
Height* Minimum Opening** (sq. in.)
(ft)
10 11.3 16.6 22.1
15 8.6 12.6 17.3
20 7.5 10.8 14.5
25 6.6 9.6 12.6
30 6.2 9.1 11.3
35 5.7 8.0 10.8
40 5.3 7.5 10.2
* Height is from hearth to top of chimney and the minimum
height is 10 feet.
** Chart shows minimum opening (sq. in.) for given height and
input rate.
FOR MASONRY BUILT FIREPLACES
FREE OPENING AREA OF CHIMNEY DAMPER FOR
VENTING COMBUSTION PRODUCTS FROM DECORA-
TIVE APPPLIANCES FOR INSTALLATION IN SOLID
FUEL BURNING FIREPLACES
Appliance Input Rate (BTU/hr)
20 30 40
Chimney
Height* Minimum Opening** (sq. in.)
(ft)
6 17.6 25.7 33.8
8 16.5 23.7 31.2
10 15.1 21.7 28.7
15 14.1 19.9 26.1
20 12.9 18.5 23.7
30 12.2 16.9 21.6
* Height is from hearth to top of chimney and the minimum
height is 6 feet.
** Chart shows minimum opening (sq. in.) for given height and
input rate.
INSTALLING AS A VENTED APPLIANCE
Manual and millivolt controlled gas logs may be installed as a
vented decorative log set in compliance with ANSI Z21.60 and
National Fuel Gas Code, Section 6.6 since, the gas logs are oper-
ated with the damper open, non-combustible material and mini-
mum mantel requirements do not apply.
This appliance is for installation only in a solid fuel burning fire-
place (masonry fireplace or manufactured fireplace) with a work-
ing flue and constructed of noncombustible material.
Damper stop installation:
A damper stop must be provided with the unit. Contact your dealer
to obtain one. The damper stop must be installed as shown in
(Figure 9) to prevent full closure of the fireplace damper blade
and provide a minimum 29 square inch flue opening.
State of Massachusetts requirement for installation of vented
decorative appliance in a vented fireplace is the following:
A vented decorative gas appliance must be installed in a vented
fireplace only in the state of Massachusetts. The vent damper
must be removed or welded permanently open.
Damper Stop Installation
Figure 9