OPERATIONAL TEST PROCEDURE
IMPORTANT: Do not run boiler unattended until the following procedure is completed
1.
Before raising the water level above the Model 1150, turn on power to the boiler and set the thermostat to call for heat. Both
the green “POWER” LED and amber “LOW WATER” LED should illuminate. The burner should not fire. IMPORTANT: If the
burner fires with no water at the probe, immediately shut down power to the boiler and refer to the Trouble Shooting instruc-
tions below.
2.
Proceed to fill the boiler with water. When water reaches the LWCO position, the burner should fire. If the burner does not
fire, refer to the Trouble Shooting instructions below.
3.
Turn off the power to the boiler and finish filling the system.
4.
Before leaving the job, power up the system and push the TEST button on the Model 1150 to simulate a low water condition.
The amber “LOW WATER” LED should illuminate and the burner should shut down.
MAINTENANCE
EVERY YEAR
Check control operation annually by pressing the TEST button. The amber “LOW WATER” LED should illu-
minate and the burner should shut down.
5 YEARS
Remove the low water cut-off every five years and clean all surfaces in contact with water.
TROUBLE SHOOTING
IF THE BURNER DOES NOT SHUT DOWN
(when water is below the probe or when the TEST button is pressed)
1.
Turn off boiler power immediately and re-check wiring.
2.
Turn off boiler power and drain system. Remove low water cut-off and check for adequate clearance – no metal should be in
contact with the controlʼs metal probe tip.
IF THE BURNER DOES NOT FIRE
1.
Make sure water has reached the level of the control.
2.
Check for proper ground. The 1150 grounds through the probe to the boiler shell or pipe tee. The control box mounting
screws ground the circuit board to the probe. Check to ensure that both mounting screws are tightened securely and that the
probe is not insulated from the boiler shell or tee with excessive use of Teflon tape or sealing compound.
3.
Check to ensure the controlʼs metal probe tip is not surrounded by an air pocket. Shut down power to the boiler and
slowly loosen, but do not remove, the control. Allow any air to escape. When water begins to seep past threads, retighten
the control.
4.
Re-check wiring and check for correct incoming voltage.
Model 1150 Instructions: Model 1150 Instructions 9/24/10 9:17 AM Page 5
