Slant/Fin B-120A Installation And Operating Instructions Manual page 26

26
7.62 (25)
6.10 (20)
Head
m (feet w.c)
4.57 (15)
3.05 (10)
1.52 (5)
0.3 (5)
Figure 19. Boiler water side pressure drop
Flow Temp
Rate Rise
L/s (gpm) °C (°F)
0.65 (10.8) 11 (20)
0.43 (7.2) 16.5 (30)
0.32 (5.4)* 22 (40)
Table 2a. Recommended pump models for domestic hot water tank piping to the Bobcat model B-120A boiler.
Boiler
Temp
Flow Head
Rise
Rate
L/s (gpm) ) M(Feet
°C (°F
1.08 (18.0) 11.0 (20) 7.01 (23.0)
0.85 (14.5) 13.8 (25) 5.03 (16.5)
0.72 (12.0) 16.5 (30) 3.81 (12.5)
0.54 (9.0)* 22.0 (40)* 2.4 (7.5)
Table 2b. Recommended pump models for domestic hot water tank piping to the Bobcat model B-200A boiler.
Notes:
* This is the minimum flow rate recommended for each of the boiler models.
** Domestic water tank piping head is based on 1" inside diameter piping and full port valves.
*** Refer to the DHW Tank Manufacturer's water flow rate requirements and associated pressure drop head loss, to select
the appropriate circulator.
If 2 circulators are specified, they must be piped in series in order to provide the head capacity shown. Power to
s
circulator(s) must be supplied through an appropriate relay to protect the boiler control's fuse.
B-120A
0.6 (10)
Flow Rate L/s (GPM)
Boiler Domestic Water
Head Tank Piping
Loss Head Loss **
M (Feet) w.c. M (Feet) w.c.
3.0 (10.0) 0.90 (3.0)
1.52 (5.0) 0.76 (2.5)
0.90 (3.0) 0.46 (1.5)
Domestic
Water
Loss Tank Piping
Head Loss **
Taco 0011
w.c.) M (Feet) w.c.
1.22 (4.0)
Recommended
1.07 (3.5)
Recommended
0.91 (3.0) 1.68 (5.5)
0.76 (2.5) 4.27 (14.0)
B-200A
0.9 (15)
1.2 (20)
Available Head Capability Left for Various Model Cir-
culators to Overcome DHW Tank Head Loss
Taco 0012
Not Recommended
1.52 (5.0)
2.59 (8.5)
Available Head Capability Left for Various Model
Circulators to Overcome DHW Tank Head Loss M (Feet) w.c. ***
(2 in Series)
Taco 0013
Taco 0011
Not Not
0.90 (3.0)
Recommended
Not
1.07 (3.5) 5.18 (17.0)
5.20 (10.5) 8.08 (26.5)
6.49 (18.0) 11.6 (38.0)
Bobcat Models B-120A and B-200A
M (Feet) w.c.***
Taco 0014
1.22 (4.0)
3.20 (10.5)
4.42 (14.5)
Taco
(2 in Series)
1400-20
s s
Taco 0013
Not
3.96 (13.0) Recommended 1.98 (6.5)
8.23 (27.0) 1.83 (6.0)
11.1 (36.5) 3.66 (12.0) 6.55 (21.5)
14.0 (46.0) 5.94 (19.5) 8.69 (28.5)
Taco 0011
2.90 (9.5)
5.34 (17.5)
7.16 (23.5)
Taco
s s
1400-45
4.73 (15.5)