42
Table 10: Input Rate
APPLIANCE. See Figure 38, 39 or 40.
Drain boiler and system piping.
h. Remove drain valve. Thoroughly wash boiler
water passages with high pressure spray through
drain valve tapping.
i. Reinstall drain valve in Tapping "F". See
Figures 1 and 2.
3. Second Boil-out for Stubborn Cases. If all oil and
grease is not removed a second boilout using surface
blow-off is necessary.
a. Run 1 NPT pipe from Surface Blow-Off Tapping
"L" to open drain. Do not install shut-off valve or
other restriction. See Figure 2.
b. Fill boiler to top of gauge glass.
c. Remove safety valve.
d. Pour recommended boil-out compound into
boiler through safety valve opening.
e. Reinstall safety valve in Tapping "E" with
spindle in vertical position. See Figures 1 and 2.
f. Follow Lighting or Operating Instructions to
place boiler in operation. See Figure 38, 39 or
40. Boil water for approximately 5 hours
without producing steam.
g. Open boiler fill shut-off valve to produce steady
trickle of water from surface blow-off pipe.
Continue boil-out for several hours until surface
blow-off water runs clear.
h. Follow instructions TO TURN OFF GAS TO
APPLIANCE. See Figure 38, 39 or 40. Drain
boiler and system piping.
i. Remove drain valve. Thoroughly wash boiler
water passages with high pressure spray through
drain valve tapping.
j. Fill boiler to normal waterline. If water in gauge
glass is not clear, repeat procedure starting at
step b.
k. Remove surface blow-off piping. Install 1 NPT
plug in Tapping "L". See Figure 2.
4. Add Boiler Water Treatment.
a. Remove safety valve.
b. Pour recommended compound into boiler
through safety valve opening.
c. Reinstall safety valve in Tapping "E" with
spindle in vertical position. See Figures 1 and 2.
d. Follow Lighting or Operating Instructions to
place boiler in operation. See Figure 38, 39 or
40.
e. Boil water or heat water to 180°F.
f. Measure boiler water alkalinity. pH should be
between 7 and 11. Add recommended water
treatment chemicals, if necessary, to bring the pH
within the specified range.
5. If unsteady water line, foaming or priming persist:
a. Follow Lighting or Operating Instructions to
place boiler in operation. See Figure 38, 39 or
40.
b. Install gate valve (shut-off valve) in Hartford
Loop. Install drain valves in return main and at
boiler. See Figure 21.
c. Connect hoses from drain valves to floor drain.
Close gate valve in Hartford Loop. Open drain
valve in return main.
d. Fill boiler to normal water line. Follow Lighting
or Operating Instructions to place boiler in
operation. See Figure 38, 39 or 40.
e. Operate boiler for at least 30 minutes after
condensate begins to run hot. Follow instructions
TO TURN OFF GAS TO APPLIANCE. See
Seconds
for One
Revolution
Size of Gas Meter Dial
One-Half
Cu. Ft.
One
Cu. Ft.
Two
Cu. Ft.
Five
Cu. Ft.
30
60
120
240
600
32
56
113
225
563
34
53
106
212
529
36
50
100
200
500
38
47
95
189
474
40
45
90
180
450
42
43
86
172
430
44
41
82
164
410
46
39
78
157
391
48
37
75
150
375
50
36
72
144
360
52
35
69
138
346
54
33
67
133
333
56
32
64
129
321
58
31
62
124
310
60
30
60
120
300
62
29
58
116
290
64
29
56
112
281
66
29
54
109
273
68
28
53
106
265
70
26
51
103
257
72
25
50
100
250
74
24
48
97
243
76
24
47
95
237
78
23
46
92
231
80
22
45
90
225
IX. System Start-up (continued)
Summary of Contents for INDEPENDENCE
Page 4: ...4 Figure 1 Dimensional Drawing...
Page 56: ...56 Manifold and 1 Main Burners XI Repair Parts continued...
Page 62: ...62 XI Repair Parts continued...
Page 64: ...64 XI Repair Parts continued...
Page 72: ...72 U S Boiler Company Inc P O Box 3020 Lancaster PA 17604 1 888 432 8887 www usboiler net...
