Technical data

16.0 Operational Flow Chart
59
16.2 Central Heating Mode
Pump Overrun done or
primary Flow Switch
not made.
WAIT FOR DIVERTER
VALVE TO MOVE
Diverter Valve on
Diverter Valve moved
Programmer on &
Room Thermostat on &
Anticycle done
OFF
Programmer off or
Room Thermostat off
or Flow temp above
set point
CH RUN
Diverter Valve on
Pump on
Fan Speed Variable
Gas Valve on
Programmer on &
Room Thermostat on &
Flow temp below set
point & primary Flow
Switch made
PUMP OVERRUN
Diverter Valve on
Pump on
PURGE
Diverter Valve on
Pump on
Fan on
Purge done
IGNITION
Diverter Valve on
Pump on
Fan on
Spark Generator on
Gas Valve on
Primary Flow Switch
not made
Flame detected
CH STABILISATION
Diverter Valve on
Pump on
Fan on
Gas Valve on
Stabilisation done