Bosch TR1000 12 B Installation And Operating Instructions Manual page 10

Installation instructions
• Making use of the holes that were drilled for the old heater: Use the
mounting template to establish whether the existing holes line up
properly.
The following describes the installation procedure using the mounting
bolt.
Marking the point for mounting the heater and selecting the
opening for the connecting cable (Fig. A)
CAUTION:
Important!
Make sure that the connecting cable is isolated from the mains electricity
supply!
• Place hole 3 in the mounting template over the cold-water inlet.
• Select the most suitable hole through which the connecting cable is
be fed. The connecting cable must pass through one of the six holes
marked 14...
• Mark the point 12 at which the mounting bolt is to be inserted.
Fitting the mounting bolt and attaching the pipe connecting
pieces (Fig. B)
Open up the heater (Fig. C)
Punching out the holes at the rear of the heater for the mounting
bolt and the connecting cable
WARNING:
Important:
When mounting the appliance, only the holes actually required should be
punched out. Any other holes that are not going to be used must be
sealed watertight.
Inserting the connecting cable (Fig. D)
• Push the grommet 11 over the end of the connecting cable.
Note: Do not use the grommet for a cable with a cross-section
2
of 16 mm . The appliance must then be installed flush with the wall.
WARNING:
Attention:
Without a grommet, the TR1000 12 B is splashproof only (IP 24).
• Place the heater over the connecting cable.
• Press the grommet into the hole in the rear wall of the heater through
which the cable should be fed. Ensure that the edges of the grommet
are flush with the hole all the way round.
• Fit the heater onto the threaded bushing 8 and secure it in place with
the nut 9.
Compensating for unevenness in the wall (Fig. E)
III. Water connection
• Using the locking screw 15, the water connection can be aligned
by ± 10 mm vertically.
• Adapt the bend in the "hot" pipe so that it lines up with the hot-water
outlet. In doing so, make sure that the "cold" elbow connection
is not bent.
CAUTION:
Attention:
Ensure that a distance of at least 6 mm is maintained to live parts
of the heater.
10
• Connect the water outlet and inlet and tighten the securing nut on
the mounting bolt.
Checking for leaks and flushing the heater:
• Turn on the hot-water tap.
• Check that all pipe joints are properly sealed.
IV. Electrical connection
• As a matter of principle, the water connections must be completed
first of all before the heater is connected to the electricity supply.
The appliance should be wired up according to the circuit diagram
on the inside of the cover.
• Circuit as delivered:
12 kW Y 400 V 3 ~ (11 kW Y 380 V 3 ~ )
Connection Options:
– 8.0 kW 230 V ~ (7.4 kW 220 V ~ )
– 6.0 kW 230 V ~ (5.5 kW 220 V ~ )
(The required optional bridge can be found under accessories.)
• To guarantee compliance to relevant safety regulations, an all-pole
separator must be fitted during installation. The contact opening
must be at least 3 mm.
• The wires must not interfere with the operation of release button A on
the safety temperature limiter.
• Mark the selected output on the ratings plate.
Connection Options (Fig. A)
Definitiv wiring diagram in the appliance:
f1 Safety temperature limiter with mains terminals 1-3-5.
l2 Change-over terminal strip
(The required optional bridge for the 6 kW 230 V ~ /5.5 kW
220 V ~ circuit can be found under accessories.)
Installation note
• The installation of non plug-in ready appliances must be undertaken
by the respective utility operator or by a qualified specialist company,
who can also assist you when you are requesting the approval of
the utility company for installation of the appliance.
V. Mounting the cover onto the heater
VI. Startup
The device is compliant to IEC 61000-3-12.
• Switch on via the heater fuses in the domestic wiring.
• Turn on the hot water tap and check the water temperature.
• Explain the appliance to the user and please give him the operating
instructions.
Priority switch for combination with electric storage heaters (Fig. A)
If the heater is going to be operated in this way, a priority switch must
be connected into the line connecting the L2 phase to the appliance.
It should be mounted on the meter or distribution panel.
a, b Control line for the electricity supply company connected
to the coil input on the charging contactor.
f1 Safety temperature limiter with mains terminals.
f3 Priority switch (current relay).
TR1000 12 B – 6 720 876 017 (2020/06)