Worcester C1 Installation And Servicing Instructions page 31

END DHW
DEMAND
seconds every 10
END CH
DEMAND
No demand
and primary
temperature
below 8°C
Internal
Run pump for
Run pump
"Autofrostat"
four minutes
demand
OVERRUN FUNCTION
Fan overrun
function active
for 3 minutes
If primary temp
over 85° pump
cycles for 2
seconds until
temp below
85°
Pump runs for
3 minutes
AUTOFROSTAT FUNCTION
Wait in normal
off state for
30 minutes
Monitor
central
heating
sensor
31
If primary temp
above 80° fan
runs until temp
below 80°C
(35 seconds
minimum)
If primary temp
below 80° run
fan for 35
seconds
After 3 minutes the pump runs if:
primary temp over 95° until below 77°
hot water temp over 98° until below 63°
5°C
Below Above
to
5°C 9°C
9°C
Commence normal
central heating mode
until temperature
reaches 30°C
20°C
If primary rises
above 85° fan
runs until temp
falls below 80°
Return to
normal off
state