Burnham 1100-H4 ユーザーズマニュアル
70
TABlE 1: GAS FlOW RATE IN CUBIC FEET
PER hOUR
O.
Check limit.
1. Adjust thermostat to highest setting.
2. Observe temperature gauge. When temperature is
2. Observe temperature gauge. When temperature is
indicated, adjust limit to setting below observed
temperature. Main burners and pilot burner should
extinguish, and blower should stop.
3. Adjust limit to setting above observed temperature.
Ignition sequence should begin.
4. Adjust thermostat to lowest setting. Adjust limit to
desired setting.
P.
Adjust gas input rate to boiler.
1. Adjust thermostat to highest setting.
2. Check manifold gas pressure. See Table 5 or rating
2. Check manifold gas pressure. See Table 5 or rating
label located in the boiler’s vestibule compartment.
Adjust gas valve pressure regulator as necessary
(turn adjustment screw counterclockwise to
decrease manifold pressure, or clockwise to increase
manifold pressure). If pressure cannot be attained,
check gas valve inlet pressure. If less than minimum
indicated in Table 5 or boiler’s rating label, contact
gas supplier for assistance.
3. Clock gas meter for at least 30 seconds. Use Table
13 to determine gas flow rate in Cubic Feet per
Hour.
WARNING
Failure to properly adjust gas input rate will result
in over firing or under firing of the appliance.
Improper and unsafe boiler operation may result.
4. Determine Input Rate. Multiply gas flow rate by gas
heating value.
5. Compare measured input rate to input rate stated on
rating plate.
a. Boiler must not be over fired. Reduce input rate
a. Boiler must not be over fired. Reduce input rate
by decreasing manifold pressure. Do not reduce
more than 0.3 inch w.c. If boiler is still overfired,
contact your Burnham distributor or Regional
Office for replacement Gas Orifice.
b. Increase input rate if less than 98% of rating
plate input. Increase manifold gas pressure no
more than 0.3 inch w.c. If measured input rate is
still less than 98% of rated input:
i. Remove Main Burners per procedure in
i. Remove Main Burners per procedure in
Section IX: Service.
ii. Remove gas orifices. Drill one (1) drill size
larger (drill size is stamped on orifice, or see
Section X: Repair Parts).
iii. Reinstall gas orifices and main burners.
Measure input rate.
6. Recheck Main Burner Flame.
7. Return other gas-fired appliances to previous
7. Return other gas-fired appliances to previous
conditions of use.
Q.
Review User’s Information Manual and system
operation with owner or operator.
Seconds
for One
Revolution
Size of Gas Meter Dial
One-Half
Cu. Ft.
One
Cu. Ft.
Two
Cu. Ft.
30
60
120
240
32
56
113
225
34
53
106
212
36
50
100
200
38
47
95
189
40
45
90
180
42
43
86
172
44
41
82
164
46
39
78
157
48
37
75
150
50
36
72
144
52
35
69
138
54
33
67
133
56
32
64
129
58
31
62
124
60
30
60
120