S&P CADB HE ECOWATT Series Manual page 30

The 0V signal corresponds to the fan stop, while the signal of 10V corresponds to fan maxi-
mum speed.
To perform the speed regulation in CAV mode, it is necessary to use the accessory CONTROL
AERO-REG and the external pressure sensor TDP-D. In the CONTROL AERO-REG instruc-
tion booklet it is contained the necessary information to carry on the electrical connection
of the different components.
1º Connect the pressure transmitter TDP-D (accessory) to the specifi c pressure taps there
are in the heat recovery unit. Ensure that pressure taps " + " and " - " . Same sign in the
taps of TDP-D and CADB-HE.
3º. Reconfi gure the pressure transmitter. Select the TPD-D sensor pressure range in accor-
dance with the values in the third column in the table above.
Adjustment to work in airfl ow mode:
The selection between pressure and airfl ow is made by the DIP3(SW1) micro switch existing
inside the micro switch. Fix the micro switch in ON position.
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