1. With a demand for heating or hot water, the pump circulates water through the primary circuit. If the flow is 4.0 L/min or above the ignition sequence will start.
2. When the flow temperature reaches the set point temperature, a 5 minute delay occurs before the burner relights automatically (anticycling). The pump continues to run
during this period.
3. When the demand is satisfied the burner is extinguished and the pump continues to run for a period of 5 minute (Pump Overrun).