Part number 550-142-850/0115
38
FreeStyle
™
W
ALL
M
OUNT
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
Figure 47
0IPINGTODIAPHRAGMORBLADDER EXPANSIONTANK
Figure 48
0RESSUREDROPTHROUGH
FreeStyle
™
HEATEXCHANGERGRAPHANDTABLE
17
Primary/Secondary System Piping
(continued)
Boiler
Model
BOILER
dT
(ºF)
(GPM) @
92% Eff.
Boiler
Head Loss
(ft. w.c.)
Piping Est Head Loss - Ft
(Typical Near Boiler)
Total Loss - Ft
( Near Boiler
Piping)
Recommended
Circulators
3/4” Pipe
1” Pipe
3/4” Pipe
1” Pipe
3/4” Pipe
1” Pipe
&3
HEAT ONLY
20
7.4
7.8
12.5
3.0
20.3
10.8
A
B,C,D
30
4.9
4.0
6.0
1.5
10.0
5.5
B,C,D,E
B,C,D,E
40
3.7
2.7
3.5
0.8
6.2
3.5
B,C,D,E
B,C,D,E
&3
HEAT ONLY
20
11.0
14.4
Not
Recommended
6.0
Not
Recommended
20.4
Not
Recommended
A
30
7.3
7.5
3.0
10.5
B,C,D
40
5.5
4.6
1.8
6.4
B,C,D,E
Notes:
1.
Operating point with current grundfos pump inside the boiler.
2.
Combi pump included in the boiler is sized properly for boiler
loop.
Circulator Legend:
A - Taco 0014
B - Taco 0015
C - Grundfos UPS 15-58
D - B&G NRF 25
E - Taco 007