Burnham INDEPENDENCE IN10 CANADA Installation & Service Instructions Manual page 59

Table 10: Input Rate
Size of Gas Meter Dial
Seconds
for One
One-Half
Revolution
Cu. Ft.
30 60
32 56
34 53
36 50
38 47
40 45
42 43
44 41
46 39
48 37
50 36
52 35
54 33
56 32
58 31
60 30
62 29
64 29
66 29
68 28
70 26
72 25
74 24
76 24
78 23
80 22
L.
Adjust gas input rate to boiler. LP/Propane.
1. Set thermostat to highest setting.
2. Adjust tank regulator for gas valve inlet pressure of
13.5 inches w.c. or less.
3. Gas valve has step opening regulator which initially
opens to 1.4 or 2.5 inch w.c. and steps to full
pressure after approximately 30 seconds. Check
manifold pressure after step has occurred. Adjust gas
valve pressure regulator as necessary for 10.0 inches
w.c. (turn adjustment screw counterclockwise to
decrease manifold pressure, or clockwise to increase
manifold pressure). If 10.0 inches w.c. can not be
attained, check gas valve inlet pressure. If less than
11.0 inches w.c., contact gas supplier for assistance.
M.
Clean Heating System (Steam). A local qualified
water treatment chemical specialist is a suggested
source for recommendations regarding appropriate
chemical compounds and concentrations which are
compatible with local environmental regulations.
One Two Five
Cu. Ft. Cu. Ft. Cu. Ft.
120 240 600
113 225 563
106 212 529
100 200 500
95 189 474
90 180 450
86 172 430
82 164 410
78 157 391
75 150 375
72 144 360
69 138 346
67 133 333
64 129 321
62 124 310
60 120 300
58 116 290
56 112 281
54 109 273
53 106 265
51 103 257
50 100 250
48 97 243
47 95 237
46 92 231
45 90 225
1. Oil from new piping connections and sediment in
existing piping must be removed from system to
prevent unsteady water line and carry-over of
entrained water into supply main.
a. Fill boiler to normal waterline.
b. Follow Lighting or Operating Instructions to
place boiler in operation. See Figure 48, 49, 50,
or 51.
c. Operate boiler with steam in entire system for
several days to bring system oil and dirt back to
boiler.
d. Drain condensate from drain valve in wet return.
Operate boiler until condensate runs clean.
2. Boil-out boiler.
a. Follow instructions TO TURN OFF GAS TO
APPLIANCE. See Figure 48, 49, 50, or 51.
b. Fill boiler to normal waterline.
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 48, 49, 50,
or 51.
Check controls operation per Paragraphs F to J.
Boil water for at least 5 hours.
g. Follow instructions TO TURN OFF GAS TO
APPLIANCE. See Figure 48, 49, 50, or 51.
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 48, 49, 50,
or 51. 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.
59