1-9
BOILER SYSTEMS AND OPERATION
CONTROLLER MANUAL – SFC/SFB SERIES BOILERS
TESTING THE UNIT FIRING RATE
From the Service menu, you can test the unit’s high-fire and low-fire operation.
Program ‘L’: Burner on with minimum DHW capacity. With DHW running, press
Wrench and Minus at the same time. A L will display on the right.
Program ‘h’: Burner on with maximum Space Heating setting. With a call for
heat, press Wrench and Plus at the same time. An h will display on the right.
Program ‘H’: Burner on maximum capacity. With a call for heat, press Wrench
and Plus simultaneously twice. An H will display on the right.
To switch off test program press the Plus and Minus at the same time.
To switch off test program press the Plus and Minus at the same time.
