18
441 01 2101 05
Specifications are subject to change without notice.
Figure 21
−
Burner and Manifold
2” (51mm)
Street Elbow
A08551
Install a sediment trap in riser leading to furnace as shown in
Figure 22. Connect a capped nipple into lower end of tee.
Capped nipple should extend below level of furnace gas
controls. Place a ground joint union between furnace gas
control valve manifold and exterior manual equipment gas
shutoff valve.
Figure 22
−
Typical Gas Pipe Arrangement
UNION
SEDIMENT
TRAP
MANUAL
SHUTOFF
VALVE
(REQUIRED)
GAS
SUPPLY
A02035
Figure 23
−
Field Wiring Diagram
A 1/8
−
in. (3 mm) NPT plugged tapping, accessible for test
gauge connection, MUST be installed immediately upstream
of gas supply connection to furnace and downstream of
manual equipment shutoff valve.
Piping should be pressure and leak tested in accordance with
NFGC in the United States, local, and national plumbing and
gas codes before the furnace has been connected. After all
connections have been made, purge lines and check for
leakage at furnace prior to operating furnace.
If pressure exceeds 0.5 psig (14
−
In. W.C.), gas supply pipe
must be disconnected from furnace and capped before and
during supply pipe pressure test. If test pressure is equal to or
less than 0.5 psig (14
−
In. W.C.), turn off electric shutoff switch
located on furnace gas control valve and accessible manual
equipment shutoff valve before and during supply pipe
pressure test. After all connections have been made, purge
lines and check for leakage at furnace prior to operating
furnace.
The gas supply pressure shall be within the maximum and
minimum inlet supply pressures marked on the rating plate
with the furnace burners ON and OFF.
ELECTRICAL CONNECTIONS
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings could result in
dangerous operation, serious injury, death or property
damage.
Improper servicing could result in dangerous
operation, serious injury, death or property damage.
Before servicing, disconnect all electrical
power to furnace.
When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
Verify proper operation after servicing.
!
WARNING
