E93.1001EN.C Manual CD
+
85
S
OFT START OPTION
Start parameters can be modified to achieve better start behaviour, in case of noise or other difficulties. This is
done by reducing the fan ramp-up speed. Two reduced settings are available (I and II).
P4BE
Soft start (0=normal, 1=reduced fan ramp-up speed (I), 2= reduced fan speed ramp-up (II))
(display D9).
0 =
normal start-up
1 =
reduced fan ramp-up speed (I)
2 =
reduced fan ramp-up speed (II)
P
UMP MODE
(EC
TECHNOLOGY
)
When using a pump with Electronic Commutation technology and start-stop function, with a separate control con-
nection, this parameter determines the relay for switching the pump on and off.
P5BN
Pump mode (0=modulating, 1=relay1, 2= relay2, 3= relay3) (display DA).
Do not use the 230 Vac relay for the main power supply of the pump, but directly connect the pump to
an external power supply.
A modulating pump with PWM control: the power supply is directly connected to the mains, the PWM connection
is connected to CN10, contacts 9 and 18.
Pumps with an on/off control can be switched by one of the relay connections “lock-out”, “burner burning” or “heat
demand”. Choose a connection which is not yet used.
0 =
PWM 0-100% modulating pump, connection
CN10
, connector 9 and 18
1 =
Start-stop through relay
1
, connector 19 and 20 (lock-out)
2 =
Start-stop through relay
2
, connector 21 and 22 (burner burning)
3 =
Start-stop through relay
3
, connector 23 and 24 (heat demand)
4 =
Do not use (reserved for future applications).
T
ANK SENSOR SENSITIVITY
P2KH
Gradient heat demand detection DHW tank temperature (display BG)
[0.1°C]
With S3 in use as tank sensor, it is possible to detect a fast cooling down of the tank through a large DHW flow.
The sensitivity of this sensor can be set in parameter P2KH in tenths of degrees.
