27
UNION
SEDIMENT
TRAP
MANUAL
SHUTOFF
VALVE
(REQUIRED)
GAS
SUPPLY
A93324
Fig. 29 -- Typical Gas Pipe Arrangement
If local codes allow the use of a flexible gas appliance connector,
always use a new listed connector. Do not use a connector which
has previously served another gas appliance.
An accessible manual shutoff valve MUST be installed external
to furnace casing and within 6 ft (1.8 M) of furnace. A 1/8-in.
NPT plugged tapping, accessible for test gauge connection,
MUST be installed immediately upstream of gas supply
connection to furnace and downstream of manual shutoff valve.
Piping should be pressure tested in accordance with NFGC, local
and national plumbing and gas codes before the furnace has been
connected. In Canada, refer to current edition of NSCNGPIC. If
the pressure exceeds 0.5 psig (14-in. wc), gas supply pipe must
be disconnected from the furnace and capped before pressure test.
If test pressure is equal to or less than 0.5 psig (14-in. wc), turn
off electric shutoff switch located on furnace gas valve and
accessible manual shutoff valve before test. After all connections
have been made, purge lines and check for leakage.
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal 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
could result causing property damage, personal injury or loss
of life.
!
WARNING
Gas line grommet (factory-supplied loose parts bag) should be
used when installing gas piping. Gas line entry hole filler plug
should be installed in unused gas line entry hole. (See Fig. 30.)
NOTE
: The gas valve inlet pressure tap connection is suitable to
use as test gauge connection providing test pressure DOES NOT
exceed maximum 0.5 psig (14-in. wc) stated on gas valve. (See
Fig. 58.)
The gas supply pressure shall be within the maximum and
minimum inlet supply pressures marked on the rating plate with
the furnace burners ON at HI-HT and OFF.
Table 6 –
Electrical Data
UNIT
SIZE
VOLTS-
HERTZ-
PHASE
OPERATING VOLTAGE
RANGE
MAX
UNIT
AMPS
UNIT
AMPACITY†
MIN
WIRE
SIZE
MAX WIRE
LENGTH
FT (M)‡
MAX FUSE OR
CKT BKR
AMPS**
Max*
Min*
036060
115---60---1
127
104
8.2
11
14
33 (10.0)
15
036080
115---60---1
127
104
8.3
11
14
33 (10.0)
15
048080
115---60---1
127
104
9.9
13
14
28 (8.5)
20
060100
115---60---1
127
104
12.1
15.9
12
36 (11.0)
20
060120
115---60---1
127
104
12.4
16.2
12
35 (10.7)
20
* Permissible limits of voltage range at which unit will operate satisfactorily.
† Unit ampacity = 125 percent of largest operating component’s full load amps plus 100 percent of all other potential operating components’ (EAC, humidifier,
etc.) full load amps.
‡ Length shown is measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Time-delay type is recommended.
