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NOTE: Industry research studies indicate that
when condensate is routed to an active drain,
household detergents, etc., buffer its acidity. If
the drain is not actively used or if codes require,
obtain a neutralizer kit (usually contains lime-
stone). Proper drains and connections to the
condensate tubing are required as NORDYNE
cannot be held responsible for water leakage
which occurs due to loose hose connections or
improperly sealed drain line pipes.
GAS SUPPLY AND PIPING
This furnace is equipped for either left or right
side gas entry. Typical gas service hook-ups
are shown in Figure 25. When making the gas
connection provide clearance between the gas
supply line and the entry hole in the furnace
casing to avoid unwanted noise and/or damage
to the furnace.
All gas piping must be installed in compliance
with local codes and utility regulations. Some
local regulations require the installation of a
manual main shut-off valve and ground joint
union external to the furnace. 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. In
the absence of local codes the gas line instal-
lation must comply with the latest edition of
the National Fuel Gas Code (ANSI Z223.1) or
(CAN/CGA B149) installation codes.
An 1/8” NPT plugged tap must be installed in the
gas line to the unit for use when measuring the
gas supply pressure. The plug should be readily
accessible for service use. A drip leg should be
installed in the vertical pipe run to the unit. Table 5
lists gas fl ow capacities for standard pipe sizes as
a function of length in typical applications based
on nominal pressure drop in the line.
NOTE: Gas piping must not be run in or through
air ducts, chimneys, gas vents, elevator shafts,
etc.
Compounds used on threaded joints of gas pip-
ing must be resistant to the actions of liquefi ed
petroleum gases.
The main manual gas valve and main power dis-
connect to the furnace must be properly labeled
by the installer in case emergency shutdown is
required.
!
CAUTION:
Do not use matches, lighters, candles,
or other sources of open fl ame to check
for gas leaks.
Leak Check
!
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings
exactly could result in serious injury,
death or property damage.
Never test for gas leaks with an open
fl ame. Use a commercially available
soap solution made specifi cally for the
detection of leaks to check all connec-
tions. A fi re or explosion may result
causing property damage, personal
injury or loss of life.
After the gas piping to the furnace is complete,
all connections must be tested for gas leaks.
To check for leaks use only a soap and water
solution or other approved method.
IMPORTANT NOTE: When pressure testing
gas supply lines at pressures greater than
1/2 psig (14 in. water column), the furnace
must be disconnected from the gas supply
piping system to prevent damage to the gas
control valve. If the test pressure is less than
or equal to 1/2 psig (14 in. water column), the
furnace must be isolated from the gas supply
line by closing the manual shut-off valve.
!
WARNING:
This furnace was equipped at the
factory for use with natural gas only.
A special kit, supplied by the manu-
facturer, is required to convert the
furnace to operate on LP/propane gas.
Failure to use the proper conversion
kit can cause fi re, explosion, property
damage, carbon monoxide poisoning,
personal injury, or death.