Lennox Hearth VIS35 - Manual (Page 4)

4 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Orifice Size/Altitude Adjustment
For altitudes above 2,000 feet (In Canada 4,500 FT/1370
M),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. Chang-
ing the orifice should only be done by a qualified service
technician. Contact your Lennox Hearth Products dealer for
proper orifice sizes (see Page 24 for more information).
Codes & Approvals
C
ertifiCation
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 stove has been tested and certified by OMNI -Test
Laboratories to ANSI Z21.88-2005/CSA 2.33-2005 Standard
for Vented Gas Fireplace Heater and CGA 2.17-M91 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.
t
he
v
intage
™ s
tove
• Must conform with all local, state, and national installa-
tion 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 (In Canada, the
current CAN/CSA B149.1 installation code). Refer to
the National Fuel Gas Code and local zoning and code
authorities for details on installation requirements.
• Must conform with the Manufactured Home Construction
and Safety Standard, Title 24 CFR, Part 3280 (in Canada
CAN/CSA Z240 MH), or when such a standard is not
applicable, the Standard for Manufactured Home Instal-
lations, 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.
• Has been certified for use with either natural gas or
propane.
• Is not for use with solid fuels.
• Is approved for sitting rooms and/or bedrooms.