Bosch CH 120 Guide De Démarrage Rapide page 11

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In a hybrid system, CH 120 is not compatible with heat generators with UI 800 or
CR 400/CW 400/CW 800.
In a system without hybrid manager HM 210, CH 120 can be used together with heat
generators UI 800 and CR 400/CW 400/CW 800.
The detailed installation and operating instructions can be downloaded from the
Bosch website.
▶ Scan the QR code in Fig. 2 on page 2.
If a third-party room thermostat is connected to the heat generator, it must be
rewired and connected to the hybrid manager HM 210. The settings made on the
CH 120 are not adopted by the third-party thermostat and vice versa.
During commissioning (or after a successful installation in the service menu), you
can specify that a third-party thermostat is installed. Several standard settings are
then made in the CH 120 and some menus are hidden on the HM 210, as these do
not function optimally in conjunction with a third-party thermostat.
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Bosch Thermotechnology Ltd.
Cotswold Way, Warndon
Worcester WR4 9SW / UK
11
CH 120 – 6721890772 (2024/09)