Technical data

30
Within four
minutes of
last hot water
demand
AND
primary
temperature
above 80°C
If heat
demand has
occurred in
last 30
minutes
If heat
demand has
NOT
occurred in
last 30
minutes
Run pump
until primary
drops to
80°C
Run fan
until primary
drops to
80°C
If primary
temperature
still increases
above 90°C
Run pump for
two seconds
OVERRUN FUNCTION
AND
(Pulse pump
for 2 seconds
every 10
seconds
35CDi II)
Above
9°C
Commence normal
central heating mode
until temperature
reaches 30°C
5°C
to
9°C
Below
5°C
No demand
and primary
temperature
below 8°C
Internal
“Autofrostat”
demand
Wait in normal
off state for
30 minutes
Run pump for
four minutes
Monitor
central
heating
sensor
Return to
normal off
state
AUTOFROSTAT FUNCTION