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• Connect the room thermostat between ter-
minals 1 and 3 as shown in Fig. 6.17 or
Fig. 6.18.
T
Room thermostat
(230V rating)
L
3
2
1
Fig. 6.17
Room thermostat
T
with delay resistor
(230V rating)
L
3
2
1
External controls
terminal block
Fig. 6.18
• Route the electrical supply flexible cord
and the external control flexible cord as
illustrated in Fig. 6.19. Lock the flexible
cords in place with the flexible cord clamps
- 38 -
INSTALLATION
N
Power supply
terminal block
External controls
terminal block
N
Power supply
terminal block
To the external
control device
Fig. 6.19
6.10 External frost protection
• Connect the frost thermostat between ter-
minals 1 and 2 as shown in Fig. 6.20 or
Fig. 6.21. Do not connect live wires to
terminals to which the room thermostat
must be connected.
Frost Thermostat
T
(230V rating)
External controls
terminal block
Fig. 6.20
To the fused
spur isolation
switch
Room thermostat
T
(230V rating)
L
N
3 2 1
Power supply
terminal bloc k
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