External Frost Protection - Biasi M110B.24SM/C User Manual And Installation Instructions

To fused spur
isolation switch
M 3 2 1
Fig. 6.12
8 Connect the room thermostat between ter-
minals 1 and 3 as shown in Fig. 6.13 or
Fig. 6.14.
T
Room thermostat
(230V rating)
3 2 1
Fig. 6.13
Room thermostat
T
with delay resistor
L
3 2 1
Fig. 6.14
L N
Power supply
terminal block
External controls
terminal block
L N
Power supply
terminal block
External controls
terminal block
(230V rating)
N
Power supply
terminal block
External controls
terminal block
9 Route the electrical supply flexible cord and
the external control flexible cord as illustrated
in Fig. 6.15.
Lock the flexible cords in place with the flexible
cord clamps
To the external
control device
Fig. 6.15
It is not necessary to cut away the plastic ser-
vice panel to route the electrical cords
6.10

External frost protection

10 Connect the frost thermostat between ter-
minals 1 and 2 as shown in Fig. 6.16 or
Fig. 6.17.
Do not connect live wires to terminals to
which the frost thermostat must be con-
nected.
Frost Thermostat
T
(230V rating)
External controls
terminal block
Fig. 6.16
Installation
To the fused spur
isolation switch
Room thermostat
T
(230V rating)
L N
3 2 1
Power supply
terminal block
31