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13.10 REMOVING THE FRONT PANEL
▶ Loosen the screws, tilt the front panel outwards and take it off.
1.
Fig. 23
13.11 TEMPERATURE SENSOR INSTALLATION
13.11.1 FLOW SENSOR T1
▶ Install the sensor in direct contact with the flow line pipe and
preferably after a 90° bend (horizontally), according to the system
diagram.
▶ With buffer tank: Install the sensor in the upper part of the buffer tank,
according to the system solution. See installation instructions for the
buffer tank.
13.11.2 OUTDOOR SENSOR T2
▶ Install the sensor on the north facing side of the house. It must be
protected from direct sunlight, ventilation air or anything that can
affect the temperature measurement. The sensor must not be
installed directly beneath the roof.
13.11.3 HOT WATER SENSOR T3
Combi:The sensor is pre-installed in the hot water heater.
System:The sensor must be installed when the external hot water heater
is used. Install the sensor approx 1/3 up from the bottom of the hot
water heater. The sensor must be installed over the return connection to
the heat pump.
6 720 806 768 (2013/02)
2.
1.
13.11.4 ROOM TEMPERATURE CONTROLLER (ACCESSORY)
The room controller will only operate and control the
relevant heating circuit.
When the room temperature controller is connected and integrated in
the system, this is automatically acknowledged during the initial
configuration.
Requirements for installation location:
• If possible, interior wall without draughts or heat radiation.
• Unimpeded circulation of room air under room controller (dotted area
in fig 24 must be kept clear) this also includes a minimum of 1m from
a radiator.
Do not place the room temperature controller in direct
sunlight.
0.3 m
TT
0.3 m
Fig. 24 Recommended installation location for room temperature
controller
13.12 FILLING THE HEATING SYSTEM
First flush the heating system. If the water cylinder is connected to the
system, it must be filled with clean water. The heating system is then
filled.
WARNING: Damage to the hot water cylinder can be
caused if filling is performed in the wrong order.
▶ Fill and pressurise the water cylinder before filling the
heating system.
13.12.1 FILLING THE HEATING SYSTEM WITH CLEAN WATER
Worcester Bosch recommends the fitting of an inline system filter to help
ensure that the heating system can perform at its optimum level.
▶ Set the pre-pressure for the expansion vessel in the premises
according to the heating unit's static height.
▶ Open the heating system's valves.
▶ Top up the heating water in the system and fill system to appropriate
operating pressure.
▶ Vent the heating system by opening the shut off valve. This may have
to be repeated a couple of times and is very important to ensure the
correct operation of your heat pump.
▶ Also bleed via the heating system's other bleed valves (e.g. radiators).
INSTALLATION
6 720 802 421-08.1I
25
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