Bosch TRZ 12-2 - Installation; Fixing; Electrical connections

6 720 641 683 (2009/09)
Installation | 3en
3 Installation
3.1 Fixing
B Select fixing location (Fig. 2).
B Pull off top part (a) of program-
mer (Fig. 3).
B Remove protective cover (a1)
(Fig. 4).
B Fix base (b) to wall with screws
(Fig. 5).
B Refit top part (a) of program-
mer.
B Make electrical connections
(see 3.2).
B Refit protective cover (a1)
(Fig. 4).
B Remove insulation strip (a2)
from battery compartment
(Fig. 4).
3.2 Electrical
connections
Connections between TRZ 12-2 and
boiler:
B Use electrical cable that con-
forms to the rating H05 VV-...
(NYM...).
Connect up the TRZ 12-2 as shown
in the wiring diagram:
DANGER:
Risk of electric shock!
B Before installation,
switch off the mains
power supply
(230 V AC).
Boiler type
Elec.
connections
Boiler with
Bosch Eurotronic
Fig. 6, page 81
KN/K..-8 E/EC Fig. 7, page 81
KN..-8 P/KP
1)
1) Remove jumper for intermittent pump
mode as described in KN..-8 KP installa-
tion instructions.
Fig.
8, page 81
Boiler with
switchbox Z23
Fig. 9, page 82
ZS/ZW 20... Fig. 10, page 82
EHR/EHRE 160...350
NOx HR/HRC...
Fig. 11, page 82
Third-party brands Fig. 12, page 82