Electrical Scheme - nVent RAYCHEM HWAT ECO Mode D'emploi

Appendix
sensor position
Min. 200 mm
Min. 200 mm
Insulation

Electrical scheme

L
N
MAX.
C 20 A
30 mA
L L/
Heating cable HWAT-L/M/R
For multiple unit connection on a three phase system
F1: circuit breaker 3x20 a max. ( c-characteristic)
F2: residual current device 3x30 ma double-pole electrical protection might be
needed to comply with local electrical standards.
For Connection of a single unit:
F1: circuit breaker 20 a max. ( c-characteristic).
F2: residual current device 30 ma.
For multiple unit connection on one phase system:
F1, F3, F5: circuit breaker 20 a max. ( c-characteristic).
F2, F4, F6: residual current device 30 ma.
Sensor positioning
on metal pipes
HW A T -R/-M/-L
Pipe/boiler coupling
HW A T -ECO sensor
Aluminium tape
Boiler
N N PE PE COM
Sensor positioning
on plastic pipes
Boiler
Note: For plastic pipes
position sensor on metal
boiler coupling
NO NC S1 GND
Alarm 2 A max. 250 Vac
Pipe temp. sensor Boiler temp. sensor
Temperature sensors
ATE-180
HWAT-ECO
S2 GND
NTC
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