Hearth and Home Technologies GBI25 - Manual (Page 5)

02-02 5 26678 Rev H
GBI25 SERIES B-VENT GAS FIRED FIREPLACE INSERT
E. PRE-INSTALLATION PREPARATION
Installation and repair should be done by a qualified service technician. The appliance should be inspected before
use and at least annually by a qualified service technician. More frequent cleaning may be required due to excessive
lint from carpeting, bedding material, etc. It is imperative that control compartments, burners and circulating air
passageways of the appliance be kept clean.
Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.
WARNING!
This appliance may use the B-vent chimney system only and must not be connected to a chimney flue servicing
a separate solid fuel buring appliance.
This appliance must be installed on a noncombustible, flat, solid, continuous surface (i.e. fireplace hearth.)
1. GAS PRESSURE
For natural gas, the minimum inlet gas supply
pressure is 4.5 inches water column (w.c.), and the
maximum inlet gas supply pressure is 7.0 inches
w.c. Input rate is 17,000 to 22,000 Btu/hr. For propane
gas, the minimum inlet gas supply pressure is 11.0
inches w.c. and a maximum 14.0 inches w.c. Input
rate is 15,000 to 22,000 Btu/hr.
Manifold pressure for this appliance is 1.7 - 3.5 inches
w.c. for natural gas and 5.4 - 11.0 inches w.c. for
propane gas. This appliance has a variable adjust
manifold.
Input (line) and output (manifold) pressure taps are
located at the front of the gas control valve near the
variable regulator for test gauge connection with a
3/8” diameter hose.
A 1/8” NPT plugged tapping is provided on the gas
control valve, near the outlet to the main burner
immediately upstream of the gas supply connection
to the appliance, accessible for a test gauge
connection.
2. HIGH ALTITUDE INSTALLATION
U.S. Installation: Appliances are tested and approved
for elevations from 0-2000 feet (0-610m).
When installing this appliance at an elevation above
2000 feet, it may be necessary to decrease the input
rating by changing the existing burner orifice to a
smaller size. Input should be reduced 4% for each
1000 feet above sea level. Check with the local gas
utility for proper orifice size identification and to see if
the gas in your area has been deregulated. This
appliance is shipped with a .093 in./2.36 mm. orifice
size on natural gas versions and a .056 in./1.42 mm.
orifice size on propane gas versions.
Canadian Installation: Appliances are certified for
elevations from 0-4500 feet. When installing this
appliance at an elevation between 0-4500 feet in
Canada, the input rating does not need to be reduced.
When installing this appliance at an elevation above
4500 feet in Canada, check with local authorities.
Consult your local gas company for assistance in
determining the proper orifice for your location or refer
to ANSI Z23.1-latest edition, Appendix F.
3. COMPONENTS
Before installing this appliance, it may be necessary
to remove the smoke shield, ash lip, refractory,
damper blade, etc. If removed, the label referenced
on page 7 MUST be affixed to the existing fireplace
prior to installation.
WARNING!
To prevent contact with sagging or loose insulation, the appliance must not be installed against vapor barriers
or exposed insulation.