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On a call for heat, the thermostat will actuate, com-
pleting the circuit to the aquastat. In turnm the circu-
lator and ignition systems are activated and ignition
will begin. In the event the boiler water temperature
exceeds the high limit setting on the boiler mount-
ed aquastat, power will be interrupted between the
aquastat and the ignition system. The power will
remain off until the boiler water temperature drops
below the high limit setting. The circulator will con-
tinue to operate under this condition until the ther-
mostat is satisfied.
SIDEWALL VENTED (CATEGORY III) BOILERS
Should a blocked flue condition occur, the pres-
sure switch will sense a drop in pressure, open-
ing the circuit to the ignition system. For oil burners
the switch will reset after the burner goes out post-
purge and attempt to relight. After three attempts to
light, the burner will go into permanent lockout.
Do not attempt to place the boiler back into op-
eration. Contact a qualified service agency.
OPERATING INSTRUCTIONS - OIL BURNERS
The venting system should be inspected at the start
of each heating season. Check the vent pipe from
the boiler to the chimney for signs of deterioration
by rust or sagging joints. Repair if necessary.
Remove the vent pipe at the base of the chimney or
flue and, using a mirror, check for obstruction.
The lever of the pressure relief valve on the boiler
should be operated periodically to make sure that
it is functioning properly. The pressure relief valve
should open before the water pressure exceeds
the 30 lb. reading on the gauge. If this pressure is
exceeded and the pressure relief valve leaks water
when the boiler is operating at normal pressures,
it should be immediately replaced. Corrosion can
build up rapidly at the valve seat and prevent its
functioning as a safety device.
!
WARNING
WATER WILL BE BOILING HOT.
NORMAL SEQUENCE OF OPERATION
!
31
START-UP AND ADJUSTMENT OF BURNER
(See oil burner instructions for nozzle and electrode setting.)
1. Check oil burner nozzle to make certain it is tight
in adapter. Burner mounting bolts should be tight.
2. Check electrode setting, as they may have been
jarred out of position during transportation.
3. Lubricate burner motor and circulator motor if re-
quired. Some circulators are water lubricated and
do not require oiling.
4. Set room thermostat to call for heat, or jump
thermostat contacts on the boiler control.
5. Open all oil line valves.
6. Turn service switch on. Burner should start.
7. On one pipe fuel systems only, vent pump as
soon as burner starts. Allow oil to run until all traces
of air in the suction line disappear.
8. Turn "OFF" burner and install pressure gauge
port on pump.
9. Start burner again and check oil pressure for 140
pounds. Adjust if necessary.
!
CAUTION
DO NOT SET FIRE VISUALLY.
Instruments are the only reliable method to deter-
mine proper air adjustments. An improperly adjust-
ed burner causes soot and high fuel bills because
of incomplete combustion of the fuel oil. This in turn
may require excessive boiler maintenance, service
costs, and in some instances, house cleaning or re-
decorating. A competent service mechanic should
be consulted to make the proper adjustments with a
smoke tester, CO
indicator and draft gauge. Bacha-
2
rach or Dwyer test kits include these instruments.
!
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