Slant/Fin Oil Hot Water User Manual
Page 14
14
1'
118
99
328
276
2'
113
95
313
263
3'
107
90
298
250
4'
102
86
283
237
5'
96
81
268
225
6'
91
76
253
212
7'
86
72
238
200
8'
80
67
222
187
9'
75
61
207
174
10'
69
58
192
161
11'
64
54
177
148
12'
58
49
162
136
13'
53
44
147
123
14'
47
40
131
110
15'
42
35
116
98
Two Pipe
Lift Ht.
1/2" O.D. Tubing
A
B
5/8" O.D. Tubing
A
B
A = B82 Series Suntec Pump 63 GPH gear capacity.
B = B89 Series Suntec Pump 75 GPH gear capacity.
Table 8. Line Length for Two-Stage Fuel Unit
Components usually required are a motorized booster pump of sufficient capaci-
ty, gravity tank and mounting hardware, automatic oil level pressure switch, vac-
uum breaker and necessary check valves and fittings. Additional information can
be obtained from Mitco Manufacturing, Hicksville, New York.
Duplex booster pumps are desirable to provide standby capability, in the event of
booster pump failure.
Sizing booster pump
To determine the correct size of a booster pump:
a) Using Table 1, find maximum total firing rate of the boiler system being
installed.
b) Find the vertical and horizontal dimensions of the booster pump's suction line.
c) Make sure the suction line lift and length are with capabilities of typical boost-
er pumps. Refer to Table 5. (This data is based on Suntec models BH-1030M
at 30 GPH, and BH-1050M at 50 GPH or equivalent.)
NOTE: If lift is excessive (max. 6" Hg one stage, 15" Hg two stage), contact
pump manufacturer with exact requirements. If total length is too long, increase
suction line diameter.
d) Using Table 6, find correct supply line size.
Figure 17.
Wiring diagram for
gravity feed
booster- pump operation
0 - 7'
100'
63'
8 - 10'
80'
53'
11 - 13'
63'
41'
14 - 15'
52'
34'
Vertical
Lift (2)
Firing Rates
up to 30 GPH (5)
Firing Rates
up to 50 GPH (6)
Maximum Total Suction Line Lengths (3)
1/2" O.D. copper tubing (4)
Table 5. Maximum booster pump suction line length (1)
25'
1
⁄
2
" O.D. tube
1
⁄
2
" O.D. tube
75'
1
⁄
2
" pipe
1
⁄
2
" pipe
200'
3
⁄
4
" pipe
3
⁄
4
" pipe
Total Length
Maximum
Firing Rates
up to 30 GPH (5)
Firing Rates
up to 50 GPH (6)
Table 7. Boiler feed line sizes (9)
Up to 30 GPH (5)
300'
800'
2500'
Up to 50 GPH (6)
175'
350'
1500'
Supply Line Size
1
⁄
2
" O.D. tube
1
⁄
2
" pipe
3
⁄
4
" pipe
Firing Rate
Maximum Total Supply Line Length (8)
Table 6. Supply line sizes for high-volume fuel oil
delivery systems (7)
(1) Defined as the connection distance between storage tank and inlet of booster pump.
(2) Height of booster pump inlet above bottom of storage tank. If higher lift is
needed, contact booster pump manufacturer with exact requirements.
(3) Total suction length equals vertical lift plus horizontal distance between suction
line connection at storage tank and inlet of booster pump.
(4) 5/8" tubing allows maximum horizontal distance between supply tank outlet
and booster pump inlet to be safely increased by 250%.
(5) Maximum fuel oil consumption rate with Suntec BH-1030M pump.
(6) Maximum fuel oil consumption rate with Suntec BH-1050M pump.
(7) Supply line is defined as the connection between the outlet of the booster
pump and the inlet of the supply tank.
(8) Total supply line length equals vertical lift plus horizontal distance between
booster pump outlet and supply tank inlet.
(9) Boiler feed line is defined as the connection between the gravity feed tank and
the furthest burner.