Connect Steam Boiler Piping - Weil-McLain 78 Manual

Connect Steam Boiler Piping

General steam piping information:
•
Cold
Check
water fill
Water meter
valve
Manual
isolation
valve
Pressure
reducing valve
(when used)
Figure 14 Cold Water Fill Piping
Fig.
No.
15
15
15
16
16
16
16
17 1078-1278
To condensate
return piping or
Manual
condensate
isolation
receiver
valve
(see fig. 18,
page 17)
Steam Boiler Pipe Size Table
Based on 2-Pipe Steam System
*Riser
Pipe Size - In.
Boiler
Model A B
378 3
478 4
578 4
678 3 3
778 4 4
878 4 4
978 4 4
4 4
Install piping:
* *
H
Header
C In.
3
4
4
4
4
4
6
4 6
J
Equalizer
In.
2
2
2-1/2
2-1/2
2-1/2
3
3
3