Wiring Schematics - andrews ST XL Cylinder Series Installation And Service Manual

Wiring schematic
(not supplied)
Live
marked 'L'
Typical head layout for a single phase heater
Figure 5: single phase wiring
Line terminal
marked L2
Line terminal
marked L1
Typical head layout for a three phase heater
Figure 6: three phase wiring
Single phase wiring schematic
Earth
Neutral
Live
Fuse
Earth
Neutral terminal
marked 'N'
3 phase wiring schematic
Earth
Neutral
Fuse
(not supplied)
B
Line terminal
marked L3
Earth
Neutral terminal
marked 'N'
A
B
Cut-Out Temperature 80°C
(Factorey set)
Note:
The 2 external contactors must be approved
components certi ed for 10,000 cycles of
operation for the contactor controlled by the
thermostat and at least 30 for the contactor
controlled by the non-self-resetting thermal
cut-out.
A
1
2
Contactors
(not supplied)
Live
Earth
Neutral
Immersion Heater
L1
L2
L3
1
2
Contactors
(not supplied)
L3
L2
L1
Earth
Neutral
Immersion Heater
13