Burnham Revolution User's Information Manual page 4

1. Limit. See Figure 1. A device which automatically
interrupts boiler operation when the water
temperature exceeds the set point. Maximum
allowable temperature is 240°F.
Original equipment with this boiler is a Honeywell
L8148E, combination limit, transformer and
circulator relay. Boiler operation is interrupted when
system temperature reaches cut-out temperature.
Boiler operation resumes automatically when
system temperature falls to cut-in temperature.
2. Flame Rollout Switch. See Figure 1. A device
which automatically interrupts boiler operation
when fl ames or excessive heat are present in the
combustion area enclosure. The control is a single
use device. The control is located in the combustion
area enclosure. If the control was activated to
interrupt boiler operation, do not attempt to place
boiler in operation. Contact a qualifi ed service
agency.
3. Pressure Switch. See Figure 1. A device which
automatically prevents or interrupts boiler
operation when the induced draft blower fails to
move suffi cient combustion air for proper burner
operation. Boiler operation resumes automatically
when suffi cient combustion air fl ow is reestablished.
4. Intermittent Ignition System. See Figure 1. The
Intermittent Ignition System consists of:
4
a. An electronic ignition module to energize igniter
in pilot assembly, monitor pilot burner fl ame
through pilot sensor, and regulate gas fl ow to
pilot and main burners.
b. An intermittent burning pilot to provide the
ignition source for main burners.
B.
Instructions to place the boiler in operation and to turn
off the boiler are shown on the Operating Instruction
Label posted on the inside of the front removable door.
See Figure 2 for front door removal instructions. The
Operating Instruction Label is also shown in Figure 3.
C.
The Sequence of Operation is shown in Figure 4.
Figure 2: Jacket Front Panel Removal