Strebel S-CB Px 120, Installation Operating & Maintenance Manual

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S-CB Px 120 Manual 71
In case of gas conversion, paste the correspond-
ing sticker at the appropriate position in the boiler
and mark the square for the used gas type. Also
mark the square, indicating that the correct value
has been set for parameter P4BD
(In the example on the right, ‘propan’ and ‘P4BD =
1’ have been marked).
11.1.6. 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).
P4 BE 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)
11.1.7. P
UMP MODE
(EC
TECHNOLOGY
)
When using a pump with Electronic Commutation technology and start-stop function, this parameter determines
the relay for switching the pump on and off.
P5 BN Pump mode (0=normal, 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 , connectors 9 and 18
1 = Start-stop through relay 1 , connectors 19 and 20 (lock-out)
2 = Start-stop through relay 2 , connectors 21 and 22 (burner burning)
3 = Start-stop through relay 3 , connectors 23 and 24 (heat demand)
The boiler pump must be controlled by the S-CB Px 120 boiler control. If, for any reason, an external pump
control is applied
without written approval of Strebel Ltd , the complete warranty on the S-CB Px 120 boiler
and all supplied parts will become invalid.
PROPANE
PROPAN
PROPANO
PROPAAN
BUTANE/PROPANE
BUTAN/PROPAN
BUTANO/PROPANO
BUTAAN/PROPAAN
P4BD = 1
P4BD = 2
G31 P
G30/G31 B/P