Bosch TRZ 12-2 - 2 Installation; 2.1 Fixing; 2.2 Electrical connections

9
TRZ 12-2
6 720 610 625 (01.11)
2 Installation
2.1 Fixing
B Select fixing location (Fig. 2).
B Pull off top part (a) of programmer
(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 programmer.
B Make electrical connections
(see 2.2).
B Refit protective cover (a1)
(Fig. 4).
B Remove insulation strip (a2) from
battery compartment (Fig. 4).
2.2 Electrical connections
Connections between TRZ 12-2 and
boiler:
B Use electrical cable that conforms 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 80
KN/K..-8 E/EC Fig. 7, page 80
KN..-8 P/KP
1)
1) Remove jumper for intermittent pump
mode as described in KN..-8 KP installa-
tion instructions.
Fig. 8, page 80
Boiler with
switchbox Z23
Fig. 9, page 81
ZS/ZW 20... Fig. 10, page 81
EHR/EHRE 160...350
NOx HR/HRC...
Fig. 11, page 81
Third-party brands Fig. 12, page 81
English