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Step 11 — Install Gas Piping
Installation of the gas piping must be accordance with local
building codes and with applicable national codes. In U.S.A.,
refer to NFPA 54/ANSI Z223.1 National Fuel Gas Code
(NFGC). In Canada, installation must be accordance with the
CAN/CSA B149.1 and CAN/CSA B149.2 installation codes
for gas burning appliances.
This unit is factory equipped for use with Natural Gas fuel
at elevations up to 2000 ft (610 m) above sea level. Unit may
be field converted for operation at elevations above 2000 ft
(610 m) and/or for use with liquefied petroleum fuel. See ac-
cessory kit installation instructions regarding these accessories.
NOTE: Furnace gas input rate on rating plate is for installation up
to 2000 ft (610 m) above sea level. The input rating for altitudes
above 2000 ft (610 m) must be derated by 4% for each 1000 ft
(305 m) above sea level.
For natural gas applications, gas pressure at unit gas con-
nection must not be less than 4 in. wg (996 Pa) or greater than
13 in. wg (3240 Pa) while the unit is operating. On
582K*05-07 (high-heat) units, the gas pressure at unit gas con-
nection must not be less than 5 in. wg (1245 Pa) or greater than
13 in. wg (3240 Pa) while the unit is operating, see Table 3. For
liquefied petroleum applications, the gas pressure must not be
less than 11 in. wg (2740 Pa) or greater than 13 in. wg
(3240 Pa) at the unit connection, see Table 4.
Table 3 — Natural Gas Supply Line Pressure Ranges
UNIT MODEL
UNIT SIZE
Low and Medium Heat Units
582K*XX*065 to 110
04, 05, 06, 07
High Heat Units
582K*XX*130/150
05, 06, 07
Table 4 — Liquid Propane Supply Line Pressure Ranges
UNIT MODEL
UNIT SIZE
Low and Medium Heat Units
582K*XX*065 to 110
04, 05, 06, 07
High Heat Units
582K*XX*130/150
05, 06, 07
The gas supply pipe enters the unit at the burner access pan-
el on the front side of the unit, through the long slot at the bot-
tom of the access panel. The gas connection to the unit is made
to the
1
/
-in. FPT gas inlet port on the unit gas valve.
2
Manifold pressure is factory-adjusted for natural gas fuel
use. Adjust as required to obtain best flame characteristics. See
Table 5.
Table 5 — Natural Gas Manifold Pressure Ranges
UNIT MODEL
UNIT SIZE
Low and Medium Heat Units
582K*XX*065 to 110
04, 05, 06, 07
High Heat Units
582K*XX*130/150
05, 06, 07
NOTE: LOW FIRE, 1.7 in. wg (423 Pa), applies to the following three
phase voltage units only: 582K*04*110 and 582K*05/06/07*150.
Manifold pressure for LP fuel use must be adjusted to specified
range. Follow instructions in the accessory kit to make initial read-
justment, see Table 6.
MIN.
MAX.
4.0 in. wg
13.0 in. wg
(996 Pa)
(3240 Pa)
5.0 in. wg
13.0 in. wg
(1245 Pa)
(3240 Pa)
MIN.
MAX.
11.0 in. wg
13.0 in. wg
(2740 Pa)
(3240 Pa)
11.0 in. wg
13.0 in. wg
(2740 Pa)
(3240 Pa)
HIGH FIRE
LOW FIRE
3.5 in. wg
SEE NOTE
(872 Pa)
BELOW
3.5 in. wg
SEE NOTE
(872 Pa)
BELOW
13
Table 6 — Liquid Propane Manifold Pressure Ranges
UNIT MODEL
UNIT SIZE
Low and Medium Heat Units
582K*XX*065 to 110
04, 05, 06, 07
High Heat Units
582K*XX*130/150
NOTE: LOW FIRE, 5.0 in. wg (1245 Pa), applies to the following three
phase voltage units only: 582K*04*110 and
582K*05/06/07*150.
CAUTION
Failure to follow this caution may result in equipment
damage.
When connecting the gas line to the unit gas valve, the
installer MUST use a backup wrench to prevent damage to
the valve.
Install a gas supply line that runs to the unit heating section.
Refer to the NFPA 54/NFGC or equivalent code for gas pipe
sizing data. Do not use a pipe size smaller than
the gas supply line to allow for a maximum pressure drop of
0.5 in. wg (124 Pa) between gas regulator source and unit gas
valve connection when unit is operating at high-fire flow rate.
The gas supply line can approach the unit in three ways:
horizontally from outside the unit (across the roof), thru-curb/
under unit basepan (accessory kit required), or through unit
basepan (factory option or accessory kit required). Consult ac-
cessory kit installation instructions for details on these installa-
tion methods. Observe clearance to gas line components per
Fig. 16.
9" MINIMUM CLEARANCE
FOR PANEL REMOVAL
MANUAL GAS
SHUTOFF VALVE
BASE UNIT
48" MINIMUM
BASE RAIL
ROOF
CURB
FROM
GAS
METER
LEGEND
National Fuel Gas
NFGC —
Code
STEEL PIPE
NOMINAL DIAMETERS (IN.)
1
/
2
3
/
or 1
4
1
1
/
or larger
4
Fig. 16 — Gas Piping Guide
(with Accessory Thru-the-Curb Service Connections)
FACTORY-OPTION THRU-BASE CONNECTIONS
(GAS CONNECTIONS)
This service connection kit consists of a
adapter fitting (brass), a
1
/
and a
3
/
-in. electrical bulkhead connector, all factory-installed
4
in the embossed (raised) section of the unit basepan in the con-
denser section. See Fig. 17.
HIGH FIRE
LOW FIRE
10.0 in. wg
SEE NOTE
(2490 Pa)
BELOW
10.0 in. wg
SEE NOTE
05, 06, 07
(2490 Pa)
BELOW
1
/
-inch. Size
2
X
GAS
*
REGULATOR
*
DRIP LEG
*
PER NFGC
FIELD-FABRICATED
*
SUPPORT
*Field supplied.
NOTE: Follow all local codes.
SPACING OF SUPPORTS
X DIMENSION (FT)
6
8
10
1
/
-in. NPT gas
2
-in. electrical bulkhead connector
2
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