Burnham Minuteman II, Инструкция по установке, эксплуатации и обслуживанию

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2
Table 11: Gas Flow Rate in Cubic Feet per Hour
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
J
. Ignition system safety device test. Disconnect ignitor/
sensor cable from Terminal 9 (SPARK). Gas valve
should close and pilot and main burners should
extinguish.
K.
Check water pressure switch.
1. Adjust thermostat to highest setting.
2. Connect hose to drain valve and run to bucket or
floor drain. With boiler operating, partially open
drain valve and slowly drain boiler.
3. Main burners and pilot burner will extinguish and
blower stop when water pressure drops below 10
psi. Verify limit, thermostat or other controls have
not shut off boiler.
4. Close drain valve.
5. Adjust thermostat to lowest setting. Refill boiler.
L.
Check Boiler High Limit.
1. Adjust thermostat to highest setting.
2. Observe temperature gauge. When temperature is
indicated, adjust limit to setting below observed
temperature. Main burners and pilot burner should
extinguish, and blower stop.
3. Adjust limit to setting above observed temperature.
Ignition sequence should begin.
4. Adjust thermostat to lowest setting. Adjust limit to
desired setting, at least 20°F above the tank aquastat
setting.
M.
Adjust gas input rate to boiler.
1. Adjust thermostat to highest setting.
2. Check manifold gas pressure. Pressure should be
stamped on the 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 on the boiler's rating
label, contact gas supplier for assistance.
3. Clock gas meter for at least 30 seconds. Use Table
11 to determine gas flow rate in Cubic Feet per
Hour.
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 overfired. Reduce input rate
by decreasing manifold pressure. Do not reduce
more than 0.2 inch w.c. If boiler is still overfired,
contact your U.S. Boiler distributor or Regional
Office for replacement Gas Orifices.
b. Increase input rate if less than 98% of rating
plate input. Increase manifold gas pressure no
more than 0.2 inch w.c. If measured input rate is
still less than 98% of rated input:
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
Key No. 4C in 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
conditions of use.
N
. Review User's Information Manual and system
operation with owner or operator.