External Frost Protection - Biasi Inovia 25S ERP User Manual And Installation Instructions

Use the ambient thermostat's clamps indicat-
ed in Fig. 6.16 and Fig. 6.17 to connect the
zone valve Insert the electric cables of the
zone valve's micro switch contacts in clamps
"1 and 3" of the ambient thermostat's terminal
block as in Fig. 6.17.
Remove the electric jumper between "1
and 3".
The route of the boiler and ambient thermo-
stat's electric power supply cable or wires
must follow the route indicated in Fig. 6.17.
Allow the cables to exit the boiler by using the
relevant cable clamps "P" (Fig. 6.18).
Connection of a remote controlled zone
valve
Connecting a zone valve to the terminal of the
auxiliary card and the remote control to the
specific terminals it is possible to control this
zone with the same remote control.
Moreover, should another zone controlled by
an ambient thermostat be present it is possi-
ble to regulate both zones with a different de-
livery temperature.
In order to achieve this setting it is necessary
to enter into the programming (load entry se-
quence), scroll the various parameters us-
ing keys 16 or 17 (Fig. 6.25) until the letters
P04 appear on the LCD display as well as the
value of the parameter, indicating the entry in
"parameter 04" (Fig. 6.24).
Fig. 6.24
Utilising keys 10 or 11 modify the value of the
parameter from 00 to 01 valid in order to differ-
entiate the delivery temperatures of the heat-
ing system.
By pressing key 13 confirmation of the insert-
ed value is obtained.
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INSTALLATION
Press keys 16 or 17 to exit without changing
the value.
10
11
12
Fig. 6.25
For the connection of the zone valve use the
terminals from the auxiliary card N (common
neutral), L (NO) line 230V ~ (valve opens
heating system), L (NC) line 230V ~ (valve
closes heating system) Fig. 6.26.
Zone
valve
Fig. 6.26
To remotely connect utilise the terminals indi-
cated in Fig. 6.32.

6.11 External frost protection

• Connect the frost thermostat between termi-
nals 1 and 2 as shown in Fig. 6.27, Fig. 6.27
or Fig. 6.29.
13 14
L (NO)
V
L (NC)
N
18
17
16
15
Auxiliary card
terminal board