Crown Boiler 24-07 - Manual (Page 36)

36
Figure 32: Series 24 Minimum Piping Recommendation 2 - Water Boiler
Recommendation 2 — Use when:
• system return water is not less than 135° F for prolonged periods of time
• system flow does impact flow through the boiler(ie. zoning, mixing)
NOTES:
1. All piping is schedule 40.
2. Pipe sizes listed are based on a 20°F or 40°F differential (temperature drop).
Select one to match application.
3. When specified return piping size is less than 3”, install 3” X 12” nipple and appropriate
size bell reducer directly into boiler return tapping as shown.
4. Drain valve — ball valve preferable, gate valve acceptable alternative
(supplied by others).
- Minimum valve size per ASME code is 3/4” NPT
5. Proper boiler circulator sizing is listed in Appendix B.
Pipe Sizing and Notes
L E D O M
Y L P P U S
G N I P I P
) N I( E Z I S
) 1 (
) N I( E Z I S G N I P I P N R U T E R
) 2 ( N R U T E R
N R U T E R
R E D A E H
) A 2 (
N R U T E R
H C N A R B
) B 2 ( E Z I S ). Y T Q (
F ° 0 2
P O R D
F ° 0 4
P O R D
F ° 0 2
P O R D
F ° 0 4
P O R D
F ° 0 2
P O R D
F ° 0 2
P O R D
3 0 - 4 2
4 0 - 4 2
5 0 - 4 2
6 0 - 4 2
7 0 - 4 2
8 0 - 4 2
9 0 - 4 2
0 1 - 4 2
1 1 - 4 2
2 1 - 4 2
2
2
2
2 / 1 - 2
2 / 1 - 2
2 / 1 - 2
3
3
3
4
2 / 1 - 1
2 / 1 - 1
2 / 1 - 1
2 / 1 - 1
2
2
2
2 / 1 - 2
2 / 1 - 2
2 / 1 - 2
2
2
2
2 / 1 - 2
2 / 1 - 2
2 / 1 - 2
3
3
3
4
2 / 1 - 1
2 / 1 - 1
2 / 1 - 1
2 / 1 - 1
2
2
2
2 / 1 - 2
2 / 1 - 2
2 / 1 - 2
—
—
—
—
—
—
—
—
—
3
—
—
—
—
—
—
—
—
—
3 ) 2 (
Figure 33: Series 24 Minimum Piping Recommendation 3 - Water Boiler