Bryant 580J Series Installation Instructions Manual page 19

4
5
6
7
15
8
9
10
11
12
13
14
Fig. 17 - - Gas Supply Line Piping with Thru- - Base
4
5
6
7
8
9
12
10
13
11
Fig. 18 - - Gas Supply Line Piping
3
2
1
C10999
3
2
1
C101006
3
Table 4 – Typical / - - in NPT Field Supplied Piping Parts
4
Item Qty
1 1 90 Deg Street Elbow
2 1 5 Inch Long Nipple
3 1 Ground --- Joint Union
4 1 3 Inch Long Nipple
5 1 90 Deg Elbow
6 1 12 Inch Long Nipple
7 1 90 Deg Elbow
8 1 3 Inch Long Nipple
9 1 TEE
10 1 4 Inch Long Nipple (Sediment Trap)
11 1 Cap
1
12 1 3 / Inch Long Nipple
2
13 1 NIBCO R
14 1 8 Inch Long Nipple
15 1 90 Deg Elbow
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 smaller than the
size specified. Size 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 two ways:
horizontally from outside the unit (across the roof), or
through unit basepan. Observe clearance to gas line
components per Fig. 19.
9" MINIMUM CLEARANCE
FOR PANEL REMOVAL
MANUAL GAS
SHUTOFF VALVE
BASE UNIT
48" MINIMUM
BASE RAIL
ROOF
CURB
NFGC – National Fuel Gas Code
* Field supplied.
NOTE: Follow all local codes.
STEEL PIPE
NOMINAL DIAMETER
(in.)
1
/
2
3
/
or 1
4
1 /
1 or larger
4
Fig. 19 - - Gas Piping Guide
19
Description
Ball Valve (PN: GB30)
X
GAS FROM
REGULATOR * GAS
METER
*
DRIP LEG
*
PER NFGC
FIELD-
FABRICATED
*
SUPPORT
LEGEND
SPACING OF SUPPORTS
X DIMENSION
(ft)
6
8
10
C11121