Bosch HP270-2 - Connections in the External System Box - “Boil”

Page 38 from 56 6-720-821-364 SM HP270 – 250 - 200 2016/12 en
 boiler can be used and connected with HP, but without any control of priorities or management from
the HP, so boiler will work always in parallel with Hp.
 HP system has priority in order to maximize thermal gain from the surrounded air, however the HP is
able to manage the system in order to use only the boiler as a backup instead of the integrated
electrical heater of 2 kW.
Pict.28 – Connections in the external system box – “boil”
NTC sensor in Tank Pocket
NTC sensor in Coil
Cable 1.5 mm
2
(not supplied)