External Frost Protection - Biasi M96A.24SM User Manual And Installation Instructions

Wall hung, fan flue, room sealed, high efficiency gas combi boiler
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Installation
The room thermostat must be connected to the
terminal block situated next to the control panel.
When connecting any type of external control,
the link M in Fig. 6.16 must be removed.
To fused spur
isolation switch
3
2
1
M
Fig. 6.16
8 Connect the room thermostat between ter-
minals 1 and 3 as shown in Fig. 6.17.
Do not connect live wires to terminals to
which the room thermostat must be con-
nected.
Room thermostat
T
3
2
1
Fig. 6.17
9 Route the electrical supply flexible cord and
the external control flexible cord as illustrated
in Fig. 6.18.
L
N
Power supply
terminal block
External controls
terminal block
Power supply
terminal block
L
N
External controls
terminal block
Lock the flexible cords in place with the flexible
cord clamps
To the external
control device
Fig. 6.18
6.10

External frost protection

10 Connect the frost thermostat between ter-
minals 1 and 2 as shown in Fig. 6.19.
Do not connect live wires to terminals to
which the room thermostat must be con-
nected.
Frost thermostat
Room thermostat
T
3
Fig. 6.19
To the fused spur
isolation switch
L
N
T
Power supply
terminal block
2
1
External controls
terminal block
33

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