Filter
Top Products
17
Figure 17: Wiring Diagram for Water Boilers With Beckett AFG Burner and
Split Controls Less Tankless Heater
SEQUENCE OF OPERATION
A call for heat by the thermostat energizes the L7248C control which in turn energizes the primary control. The burner
will initiate ignition after completing a 15 second pre-purge cycle. If burner ignites within approximately 45 seconds
and the cad cell sees ame, the burner will continue to operate until the call for heat is satised or the setting of the
high limit is reached. The circulator will operate as long as the thermostat is calling for heat. If the thermostat is not
satised and the high limit is reached, the circulator will continue to operate, and the burner will stop until the high limit
is closed by a drop in boiler water temperature.
L. INSTALL ELECTRIC WIRING in accordance with
National Electrical Code and local regulations. A
separate electrical circuit must be run from the main
electrical service with an over-current device/disconnect
in the circuit. A service switch is recommended and
may be required by some local jurisdictions. Wiring
should conform to Figures 17 thru 19B.