Installation Manual

18
GAS SUPPLY & PIPING
WARNING:
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly could
result in serious injury or property damage.
• Installation and service must be performed
by a qualified installer, service agency or the
gas supplier.
• Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call
the fire department.
AVERTISSEMENT :
RISQUE D’INCENDIE OU D’EXPLOSION
• Le non-respect des avertissements de sécurité
pourrait entraîner des blessures graves, la mort
ou des dommages matériels.
• L’installation et l’entretien doivent être effectués
par un installateur qualifié, un organisme de
service ou le fournisseur de gaz.
• Ne pas entreposer ni utiliser de l’essence ni
d’autres vapeurs ou liquides inflammables dans
le voisinage de cet appareil, ni de tout autre
appareil.
QUE FAIRE S’IL Y A UNE ODEUR DE GAZ
• Ne pas tenter d’allumer aucun appareil.
• Ne toucher à aucun interrupteur électrique;
n’utiliser aucun téléphone dans le bâtiment.
• Évacuer l’immeuble immédiatement.
• Appeler immédiatement le fournisseur de gaz en
employant le téléphone d’un voisin. Respecter à
la lettre les instructions du fournisseur de gaz.
• Si personne ne répond, appeler le service des
incendies.
• All gas piping must be installed in compliance with
local codes and utility regulations. In the absence
of local codes, the gas line installation must comply
with the latest edition of the Federal Manufactured
Home Constructions & Safety Standard (H.U.D.
Title 24, Part 3280.707[a][2]), NFGC (ANSI Z223.1)
or (CAN/CGA B149.1 or .2) Installation Codes.
• Some local regulations require the installation of a
manual main shut-off valve and ground joint union
external to the furnace as shown in Figure 18. The
shut-off valve should be readily accessible for
service and/or emergency use. Consult the local
utility or gas supplier for additional requirements
regarding placement of the manual main gas shut-
off.
• Per ANSI 21.47, A 1/8-inch NPT plugged tapping,
accessible for test gauge connection, must be installed
immediately upstream of the gas supply connection to
the furnace external to the cabinet. If local codes allow
the use of a flexible gas appliance connector, always
use a new listed connector. Do not use a connector
that has previously serviced another gas appliance.
• Gas piping must never run in or through air ducts,
chimneys, gas vents, or elevator shafts.
• Compounds used on threaded joints of gas piping
must be resistant to the actions of LP propane gas.
• The main gas valve and main power disconnect to
the furnace must be properly labeled by the installer
in case emergency shutdown is required.
• Flexible gas connectors are not recommended for
this type of furnace but may be used if allowed by
local jurisdiction. Only new flexible connectors
may be used. Do not use a connector which has
previously serviced another gas appliance.
• A drip leg should be installed in the vertical pipe
run to the unit if not entering the furnace through
the floor.
Shut-Off
Valve
Elbows
4
Gas Valve
Gas Valve
Shut-Off
Valve
Elbows
A Cabinet (Short)
B Cabinets
(Tall & Top Return Air Type)
Alternate Fuel
Line Entrance
Alternate Fuel
Line Entrance
Alternate Fuel
Line Entrance
Figure 18. Typical Gas Connections