13
• Gas piping must never run in or through air ducts,
chimneys, gas vents, or elevator shafts.
• The main gas shutoff valve and main power disconnect
to the unit must be properly labeled by the installer in
case emergency shutdown is required.
• An 1/8 inch NPT plugged tap must be installed in
the gas line immediately upstream of the gas supply
connection 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. See Figure 7.
This unit only has right side gas entry. When connecting the
gas, provide clearance between the gas supply line and the
entry hole in the unit’s casing to avoid unwanted noise and/
or damage to the unit. A typical gas service hookup is shown
in
lists gas pipe capacities for standard pipe
sizes as a function of length in typical applications based on
nominal pressure drop in the line.
Leak Check
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury, death, or property damage.
Never test for gas leaks with an open flame. Use
a commercially available soap solution made
specifically for the detection of leaks to check all
connections. A fire or explosion may result causing
property damage, personal injury or loss of life.
AVERTISSEMENT:
RISQUE D’INDENDIE OU D’EXPLOSION
Si les consignes de sécurité ne sont pas suivies à la
lettre, cela peut entraîner la mort, de graves blessures
ou des dommages matériels.
Ne jamais vérifier la présence de fuites de gaz au
moyen d’une flamme nue. Vérifier tous les raccords
en utilisant une solution savonneuse commerciale
conçue spécialement pour la détection de fuites. Un
incendie ou une explosion risque de se produire,
ce qui peut entraîner la mort, des blessures ou des
dommages matériels.
After the gas piping to the unit is complete, all connections
must be tested for gas leaks. This includes pipe connections
at the main gas valve, emergency shutoff valve and other
gas connectors. A soap and water solution can be applied on
each joint or union using a small paintbrush. If any bubbling
is observed, the connection is not sealed adequately and
must be retightened. Repeat the tightening and soap check
process until bubbling ceases.
•
If pressure testing the gas supply lines at pressures
greater than 1/2 psig (14 inches WC), the unit must be
disconnected from the gas supply piping system to
prevent damage to the gas valve.
•
If the test pressure is less than or equal to 1/2 psig
(14 inches WC), the unit must be isolated from the gas
supply line by closing the manual shut-off valve.
High Altitude Conversion - Natural Gas
High altitude conversion with this furnace depends on
the installation altitude and the heating value of the gas.
Installation of this furnace at altitudes above 2,000 feet shall
be in accordance with local codes, or in the absence of local
codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54.
Please consult your local code authority.
Ground
Joint
Union
Dripleg
Shut-Off Valve with 1/8 NPT plugged tap
NOTE: Some utilities require Shut-Off
Valve to be 4 to 5 feet above floor
Automatic Gas Valve
(with manual shut-off)
Figure 7. Typical Gas Hookup - Right Side Entry
