17
turned vertically with a tee.
The drip leg formed by the
tee must include a drain.
(Option 2, Option 3, Option 5,
Option 6, Option 8, Option 9, Option 12, Option 13.
• In certain cases, it is permitted to drain the inducer back
into the top drain of the collector.
This drain must not
sag in the middle.
(Option 2, Option 5, Option 7, Option
Bottom Panel Removal
The steps listed below describe how to remove the bottom
panel from the furnace. See
1. Remove the door from the blower compartment .
2. Remove all screws securing the bottom panel to the front
brace.
3. Remove two screws securing the furnace cabinet to the
blower deck.
4. Remove all screws securing the furnace cabinet to the
bottom panel.
5. Remove the screw securing the bottom corner of the
furnace cabinet to the front brace.
6. Carefully spread the bottom corner of the furnace cabinet
outwards while sliding the bottom panel out through the
front of the furnace.
7. Reassemble the furnace in reverse order.
Figure 17. Bottom Panel Removal
Bottom
Panel
Screws
Blower
Deck
Door
Front
Brace
Blower
Assembly
GAS SUPPLY & PIPING
WARNING:
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly could
result in serious injury, death 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.
• 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 National Fuel Gas Code (ANSI
Z223.1).
• Some local regulations require the installation of a
manual main shut-off valve and ground joint union
external to the furnace as shown in
. 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. See
