Bosch HP270-2 - Safety Thermostat Location for Reset in HP270-3; Sensors Connection

Page 22 from 56 6-720-821-364 SM HP270 – 250 - 200 2016/12 en
Pict.17 – Safety Thermostat location for reset in HP270-3
Cable of sensors
Pict.18 – Sensors Connection
PCB
Connector
Bottom temperature
connector (HP270-2)
Fins temperature
sensor
Top temperature
sensor
Air temperature
sensor
Black
Black
White
Blue
Blue
Bimetallic type with contacts
normally closed
Temp. activ. ≈ 90ºC
Attention: manual reset can only be
done if contact temperature is < 30ºC
(open tap to cool down circuit and
activate Purg)
Discharge temperature
connector (HP270-3)