Operation Of The C Series Boiler - Heatrae Sadia Amptec Installation Instructions And User Manual

MAIN POWER ON
SHORT/OPEN
CIRCUIT AT CONTROL
THERMISTOR
NO
OVER
TEMPERATURE?
(TEMPERATURE
SWITCH)
NO
HEATING
DEMAND?
YES
NO
WATER PRESENT?
ALARM 1
(WATER CHECK)
YES
WATER
TEMPERATURE <
SETPOINT
YES
HEATING ON
SEQUENCE
FIGURE 14 : OPERATION OF THE C SERIES BOILER
YES
SHORT/OPEN
CIRCUIT
YES
ALARM 2
NO PREVIOUS NO
HEATING DEMAND
ON?
YES
OVER RUN PUMP
(1MINUTE)
NO
HEATING OFF
SEQUENCE
WATER YES
LOWER WATER
TEMPERATURE >
TEMPERATURE TO 80°C
85°C
NO
WATER
NO
TEMPERATURE <
10°C
YES
FROST PROTECTION
PROCESS
19