Crown Boiler 24-07 User Manual
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Figure 34: Minimum Piping Requirements For Gravity Return Series 24 Steam Boilers
NOTES: 1.
All piping is schedule 40.
2.
To prevent condensate from being trapped in header
, do not reduce
equalizer elbow at header connection. 3.
Ball valve preferable, gate valve acceptable alternative
(supplied by others).
• Minimum valve size per
ASME code is 3/4” NPT
24-03/24-04;
1” NPT
24-05/24-08; 1-1/4” NPT
24-09/24-12.
• Increasing the valve size will improve the blowdown operation.
• In all cases, piping connecting blowof
f valve to boiler shall be full
size to the point of discharge.
4.
Header piping may be run over top of the boiler if space does not
allow for piping arrangement shown. Increased service
requirements will
result however
.
5.
Supply from the boiler header must be connected between the fi
rst
boiler riser and the header drip (or Hartford Loop). Do not connect
supply between risers or opposite end of boiler header
.