LG B-VENT GAS GC3 User Manual

Gas appliances must be tested and certified by a nation-

ally recognized testing and certification laboratory to ANSI

(American National Standard Institute) gas appliance safety

standards.

This  insert  has  been  tested  and  certified  by  OMNI  -Test

Laboratories  to  ANSI  Z21.88-2005  Standard  for  Vented

Gas Fireplace Heaters and UL 307B Gas Burning Heating

Appliances for Manufactured (Mobile) Homes.

It has met all necessary ANSI Standards and is fully certified

for installation in any community. If there are any questions

or if you need further substantiation either write to or call

your Lennox Hearth Products dealer. If you have further

questions, please contact Lennox Hearth Products.

Installation of these fireplaces are approved for installa-

tion in New York City in the US state of New York (MEA#:

138-07-E).

Installation of these fireplaces are approved for installation

in the US state of Massachusetts if the following additional

requirements are met -

•  Installation and repair must be done by a plumber or gas

fitter licensed in the Commonwealth of Massachusetts.

•  The flexible gas line connector used shall not exceed 36

inches (92 centimeters) in length.

•  The individual manual shut-off must be a T-handle type

valve.

For altitudes above 2,000 feet, the orifice should be de-rated

by 4% for every 1,000 feet to maintain the proper ratio of

gas  to  air.  Improper  orifice  sizing  may  result  in  damage

and unsafe conditions. Changing the orifice should only be

done by a qualified service technician. Contact your Lennox

Hearth Products dealer for proper orifice sizes (see Page 21

and 24 for more information).

•  Must conform with all local, state, and national installation

codes. In the absence of local codes, the installation must

conform with National Fuel Gas Code ANSI Z223.1 - latest

edition, also known as NFPA 54. Refer to the National

Fuel Gas Code and local zoning and code authorities for

details on installation requirements.

•  Must conform with the Manufactured Home Construc-

tion  and  Safety  Standard,  Title  24  CFR,  Part  3280,  or

when such a standard is not applicable, the Standard for

Manufactured Home Installations, ANSI A225.1 - latest

edition for manufactured (mobile) home installations.

•  Must be vented directly to the outside in accordance with

the latest edition of the National Fuel Gas Code and must

never be attached to a chimney serving a separate solid

fuel burning appliance.

•  Uses room air for combustion. It is imperative that provi-

sions for adequate combustion and ventilation air be made.

This appliance is NOT designed to and will not operate in

a negative pressure. Contact your dealer if you suspect

such a situation exists.

•  Has been certified for use with either natural gas or pro-

pane.

•  Is not for use with solid fuels.

•  Is approved for sitting rooms and/or bedrooms.

These heaters are designed to be installed into an existing

masonry fireplace (built to UBC 37 standards) or factory

built solid fuel, wood burning fireplace (listed to UL 127

standards) only. All exhaust gases must be vented outside

the structure. Combustion air is drawn from outside the

structure. When installing in a factory built fireplace, the

fireplace grate must be removed and the damper must be

removed or secured open.

If the factory-built fireplace has no gas access hole(s) pro-

vided, an access hole of 1-1/2 inches (38 mm) or less may

be drilled through the lower sides or bottom of the firebox

in a proper workmanship like manner. This access hole must

be plugged with a non-combustible insulation after the gas

supply line has been installed.

The installer must mechanically attach the marking supplied

with the gas fireplace insert to the inside of the firebox of the

fireplace into which the gas fireplace insert is installed.