Trane YSJ072A Installation, Operation And Maintenance Manual page 38

Installation
Figure 53. Through-the-base gas pipe assembly for YSJ(180-300)A
3/4" x 6 1/2" Pipe Nipple
90 Street Elbow
Gas Shut-off Valve
3/4" x 2 1/2" Pipe Nipple
Pipe Union
90 StreetElbow
Figure 54. Through-the-base gas pipe assemblies for
YSJ(072-150)A
C
D
A
B
A
M
L
1/2" and 3/4" Gas Pipe Connection
Table 5. Through-the-base gas pipe assembly
components for YSJ(072-150)A (inch)
Component Description
A Grommets
B TBUG bracket
C 90° Elbow
38
Grommet
Grommet
E
F
G
K H
I
J
Connection Size
1/2 inch 3/4 inch
½ ¾
- -
½ ¾
3/4" x 8 1/2" Pipe Nipple
Tee
3/4" x 4" Pipe Nipple
Cap
3/4" x 2 1/2" Pipe Nipple
Table 5. Through-the-base gas pipe assembly
components for YSJ(072-150)A (inch) (continued)
Component
D
E
F
G
H
I
J
K
L
M
For detailed Through-the-Base Gas Installation
instructions, refer to the Through-the-Base Gas Piping 3 to
25 Tons Gas/Electric Packaged Units Installation
Instructions (ACC-SVN17*-EN) provided with Through-the-
Base Gas Installation kit.
Requirements of Gas Heat
The unit gas train and optional through-the-base gas shut-
off valve are rated at 0.50 PSIG maximum. A pressure
reducing regulator is recommended to prevent this
maximum from being exceeded. These components must
be isolated during field gas piping test that exceed 0.50
PSIG. It is recommended that the field piping be capped
prior to the unit gas train or optional through-the-base gas
shut-off valve if present.
90 Elbow
SEE DETAIL A
Support Plate
Connection Size
Description
1/2 inch
Pipe fitting
½ x 7¼
Gas ball valve ½
Street elbow ½
Pipe fitting
½ x 2 ½
Tee pipe
½
Pipe fitting
½ x 4
Pipe cap
½
Pipe fitting
½ x 2 ¾
Pipe union
½
Pipe fitting
½ x 4 ½
3/4 inch
¾ x 6½
¾
¾
¾ x 2¼
¾
¾ x 4
¾
¾ x 2
¾
¾ x 5¼
RT-SVX071A-EN