21
111368-04 - 1/22
Series 49
Installation, Operating & Service Instructions
Figure 7-2: Near Boiler Piping of Hartford Loop
49-075S thru
49-150S
49-175S thru
49-299S
49-350S and
49-399S
49-450S thru
49-550S
# Sections
3 & 4
5, 6 & 7
8 & 9
10, 11 & 12
A
1
(1) 2
(2) 2
(3) 2
(4) 2
B
2
3
4
4
C
1-1/2
2
2
2
D
1-1/4
1-1/2
1-1/2
1-1/2
1
(3) 2 indicates three 2 inch risers
7
Steam Piping
(continued)
A
B
A
A
B
Supply Main to be taken
off top of header vertically.
Boiler
Fill
Gate Valve
Steam-wet return
pitch down to boiler.
Provide drain valves for
flushing boiler and system.
Plugged
Tee
C
C
D
D
Close or shoulder
nipple only.
Front
of boiler
26 78 "
(N.W.L.)
24"
(Minimum)
24 78 "
(Gravity Return)
Floor
Line
Alternate Drop Header
Alternate Return Piping
Close or
shoulder
nipple only.
