42
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800-347-9575
for Technical Support
9. Make sure that the boiler vessel is filled with water and the Triple Aquastat Temperature
Controller is set to call for heat. Push the manual reset buttons on the Low Water Cut-
Off Control and the High Limit Aquastat Control to make sure they are not locked out.
10. Jump one set of alligator clips across the T-T terminals (red wires) of the primary control
to simulate the thermostat requesting heat. The primary control will start the burner in a
second or two. (F-F must not be jumped yet.)
11. Once the burner motor starts, immediately jumper across the F-F terminals (yellow
wires) of the primary control with another alligator clip to simulate the cad cell seeing a
flame. If jumped properly, the burner will continue to operate without tripping.
12. Verify that the pump is running. Whenever the burner is operating, the pump should be
operating as well.
13. It will take some time (10
– 30 minutes, depending on the unit size and length of tubing
between the pump and preheater) for the fuel to reach and fill the preheater.
14. If there is a high point air bleed in the fuel tubing, place a bucket under the bleed to
catch fuel that comes out, open the bleed valve and close the valve going into the
preheater. Once fuel is flowing steadily from the bleed line with to air bubbles, reopen
the preheater valve and close the bleed valve.
15. Once fuel is flowing steadily from the tube at the top of the preheater into the container
with no air bubbles visible, the system is primed.
The preheater and fuel
coming out may be hot.
16. If all the air has been bled from the lines, the pressure should go immediately to around
60 psi when the preheater valve is closed.
Fuel may spray out forcefully
when the valve is reopened if there is air in the line.
17. Check for leaks.
18. Once priming and leak checks are completed, remove the alligator clips from the
terminals.
Do not leave the T-T and/or F-F terminals jumped during
normal boiler operation, as this bypasses several safety checks.
19. Reconnect the fuel tubing at the preheater / solenoid valve / burner.
7.4.2 Starting the Boiler
Important:
Prior to starting the boiler, allow the preheater to heat the fuel until the outlet of the
preheater is hot. This may take up to 30 minutes. The preheater thermostat circuit will close
once fuel temperature reaches approximately 120°F. Once the fuel is hot, start the boiler as
follows:
DO NOT ATTEMPT TO START THE BURNER WHEN EXCESS OIL HAS
ACCUMULATED, WHEN THE BOILER IS FULL OF VAPOR, OR WHEN THE COMBUSTION
CHAMBER IS VERY HOT. Refer to section 8.5.1 (heat exchanger cleaning) for instructions on
removal of excess oil.
DO NOT START THE BURNER UNLESS ALL CLEANOUT PANELS ARE
SECURE IN PLACE.
