Cleaning Boiler Sections; Perform Combustion Test - PENSOTTI DK2-3 User Manual

- Check the primary control safety features in accordance with the manufacturers
recommendations outlined in the instructions furnished with the control and burner
assemblies. The following tests should be performed: 1) Safe start safety check 2) Ignition
failure 3) Flame failure 4) Power failure.
In the event the boiler is equipped with a low water cut off the cut off should be tested in
accordance with the manufacturers recommendations. When no instructions are available
follow the guidelines in ASME CSD-1 or perform the following procedures:
- Set room thermostat at least 10degrees F above room temperature.
- With Burner operating, drain boiler slowly until the burner shuts off. This shut off
should occur when the water level falls below the low water cut off probe.
- Check to be sure the burner shut off is not due to an open limit or flame safety issue.
- Reset the room thermostat to the desired temperature and refill the boiler.
CLEANING OF THE BOILER SECTIONS
Section cleaning should only be performed by a service technician and must only be performed
when the boiler is out of service. The following steps should be followed.
- Remove the front casing by sliding it upwards to release and then pull to remove.
- Open the front swing door by removing the four bolts, this will expose the chamber area as
well as the second and third passes.
- Remove the stainless steel baffles. With a cleaning brush clean the boiler section, second
and third passes.
- Remove the insulation and smokehood cleaning cover from the rear section. Remove any
soot that may have collected in the smokehood. Replace insulation on the rear section.
- Replace swing door and tighten bolts.
- Refit the front casing.
FUEL SYSTEM AND BURNER CLEANING
Your burner manufacturer has supplied instructions for servicing and maintenance should be
performed as instructed. In addition the following fuel and related items should be serviced on a
regular basis.
- Service fuel filters and fuel unit
- Service burner housing and fan.
- Replace nozzle using only the size and type recommended by the burner manufacturer.
- Service ignition system.
- Perform testing and check for proper operation of the primary control. Service primary
control.

PERFORM COMBUSTION TEST

The burner must be adjusted to insure proper CO2 and O2 levels with no more than True Zero
Smoke. Continue adjustments until the proper level is achieved.
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