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Table 10: Input Rate
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 qualied
water treatment chemical specialist is a suggested
source for recommendations regarding appropriate
chemical compounds and concentrations which are
compatible with local environmental regulations.
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 ll 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.
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