Electrical Connections - Bosch TRZ 12-2 Bedienungsanleitung

2 Installation
Danger:
Risk of electric shock!
Before installation,
B
switch off the mains
power supply
(230 V AC).
2.1 Fixing
Select fixing location (Fig. 2).
B
Pull off top part (a) of programmer
B
(Fig. 3).
Remove protective cover (a1)
B
(Fig. 4).
Fix base (b) to wall with screws
B
(Fig. 5).
Refit top part (a) of programmer.
B
Make electrical connections
B
(see 2.2).
Refit protective cover (a1)
B
(Fig. 4).
Remove insulation strip (a2) from
B
battery compartment (Fig. 4).
6 720 610 625 (01.11)
2.2

Electrical connections

Connections between TRZ 12-2 and
boiler:
Use electrical cable that conforms to
B
the rating H05 VV-... (NYM...).
Connect up the TRZ 12-2 as shown in
the wiring diagram:
Boiler type
Boiler with
Bosch Eurotronic
KN/K..-8 E/EC
1)
KN..-8 P/KP
Boiler with
switchbox Z23
ZS/ZW 20...
EHR/EHRE 160...350
NOx HR/HRC...
Third-party brands
1) Remove jumper for intermittent pump
mode as described in KN..-8 KP installa-
tion instructions.
TRZ 12-2
Elec. connections
Fig. 6, page 80
Fig. 7, page 80
Fig. 8, page 80
Fig. 9, page 81
Fig. 10, page 81
Fig. 11, page 81
Fig. 12, page 81
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