GCES80 Installation Manual

11
P OSSIBILITY OF PROPERTY DAMAGE , PERSONAL INJURY OR DEATH
DAMAGING CONDENSATION CAN OCCUR INSIDE MASONRY CHIMNEYS
WHEN A SINGLE FAN - ASSISTED C ATEGORY I APPLIANCE (80% AFUE
FURNACE ) IS VENTED WITHOUT ADEQUATE DILUTION AIR . D O NOT
CONNECT AN 80% FURNACE TO A MASONRY CHIMNEY UNLESS THE
FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED
APPLIANCE OR THE CHIMNEY IS LINED WITH A METAL LINER OR T YPE B
METAL VENT . A LL INSTALLATIONS USING MASONRY CHIMNEYS MUST BE
SIZED IN ACCORDANCE WITH THE APPROPRIATE VENTING TABLES . I F AN
80% FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED
APPLIANCE , THE POTENTIAL FOR CONDENSATION DAMAGE MAY STILL
EXIST WITH EXTREMELY COLD CONDITIONS , LONG VENT CONNECTORS ,
EXTERIOR CHIMNEYS , OR ANY COMBINATION OF THESE CONDITIONS .
T HE RISK OF CONDENSATION DAMAGE IS BEST AVOIDED BY USING
MASONRY CHIMNEY AS A PATHWAY FOR PROPERLY SIZED METAL LINER
OR T YPE B METAL VENT .
WARNING

A masonry chimney used as a vent for gas red equipment
must extend at least three feet above the highest point where it
passes through the roof. It must extend at least two feet higher
than any portion of a building within a horizontal distance of
10 feet. In addition, the chimney must terminate at least 3 feet
above any forced air inlet located within 10 feet. The chimney
must extend at least ve feet above the highest connected
equipment draft hood outlet or ue collar.
If the chimney does not meet these termination requirements,
but all other requirements in the checklist can be met, it may
be possible for a mason to extend the chimney. If this will not
be practical, see Fix 1.

HIGH VOLTAGE !
T O AVOID THE RISK OF ELECTRICAL SHOCK , WIRING TO
THE UNIT MUST BE POLARIZED AND GROUNDED .
WARNING
HIGH VOLTAGE !
T O AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK , DISCONNECT ELECTRICAL POWER
BEFORE SERVICING OR CHANGING ANY ELECTRICAL
WIRING .
WARNING
L ABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS . W IRING
ERRORS CAN CAUSE IMPROPER AND DANGEROUS
OPERATION . V ERIFY PROPER OPERATION AFTER SERVICING .
CAUTION
14. Restore power to furnace.
NOTE: In a horizontal installation the air conditioning coil
must be adequately supported by proper brackets and
supports. Inadequate coil support can result in furnace
cabinet distortion and air leakage.
are shipped with the induced draft blower
discharging from the top of the furnace. (“Top” as viewed for
a counterow installation.)
Vent the furnace in accordance with the National Fuel Gas
Code NFPA54/ANSI Z223.1-latest edition.
N EVER ALLOW THE PRODUCTS OF COMBUSTION , INCLUDING CARBON
MONOXIDE , TO ENTER THE RETURN DUCTWORK OR CIRCULATION AIR
SUPPLY .
WARNING

An exterior masonry chimney is dened as a “Masonry” chim-
ney exposed to the outdoors on one or more sides below the
roof line.”
Masonry chimneys used to vent Category I central furnac-
es must be either tile-lined or lined with a listed metal liner
listed for venting a Category 1 appliance.. Unlined masonry
chimneys are prohibited and must not be used to vent this
appliance. An exterior masonry chimney that is not tile-lined
must be lined with B vent or a listed insulated exible metal
vent. Insulation for the exible vent pipe must be an encap-
sulated berglass sleeve recommended by the exible vent
pipe manufacturer. Insulation will need to be added to the
exible liner if:
• It is required by the liner manufacturer’s Instructions.
• The previous liner was properly sized and installed,
and su󰀨ered from condensation damage.
A listed uninsulated exible metal vent liner may be used in an
exterior tile lined chimney that is sealed and capped.
Poured insulation, vermiculite or other materials shall not be
used.
For sizing of exible liners, see the tables in the National Fuel
Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the
National Standard of Canada, CAN/CSA B149.1 and CAN/
CSA B149.2 – latest editions and amendments.
If a B vent liner is to be used, it must be supported adequate-
ly. Supports (such as re stops or thimbles) must be used to
prevent the B vent from coming into direct contact with the tile
liner or chimney walls. Direct contact would result in higher
heat loss, with an increased possibility of poor venting system
performance.
It is not acceptable to vent one appliance inside the B vent
and other appliances outside. The excess space between the
B vent and the chimney walls must be covered at the top of
the chimney by a weatherproof, corrosion resistant ashing.
The B vent shall then be topped with a listed vent cap.