Checking Tightness And Filling The System; Mount The Wired Room Controller; Electrical Connection; General Notes - Bosch Climate 5000 L Installation Instructions Manual

3.5.4

Checking tightness and filling the system

Checking tightness
Observe the national and local regulations when carrying out the
tightness test.
▶ Remove the caps of the valves of a connection pair ( Fig. 15 and
16, [1], [2] and [3]).
▶ Connect the Schrader opener [6] and pressure gauge [4] to the
service socket [1].
▶ Open Schrader valve [1].
▶ Leave valves [2] and [3] closed and fill the pipes with nitrogen until
the pressure is 10% above the maximum operating pressure (
Page 61).
▶ Check whether the pressure is still the same after 10 minutes.
▶ Discharge the nitrogen until the maximum operating pressure is
reached.
▶ Check whether the pressure is still the same after at least 1 hour.
▶ Discharge nitrogen.
Filling the system
NOTICE
Malfunction due to incorrect refrigerant
The outdoor unit is filled with refrigerant R32 at the factory.
▶ If refrigerant needs to be topped up, only use the same refrigerant.
Do not mix refrigerant types.
▶ Evacuate and dry the pipes with a vacuum pump ( Fig. 15 and 16,
[5]) for at least 30 minutes at roughly −1 bar (approx. 500 microns).
▶ Open valve [3] on liquid side.
▶ Use a pressure gauge to [4] check whether the flow is unobstructed.
▶ Open valve [2] on gas side.
The refrigerant is distributed round the connected pipes.
▶ Afterwards, check the pressure ratios.
▶ Unscrew the Schrader opener [6] and close the Schrader valve [1].
▶ Remove the vacuum pump, pressure gauge and Schrader opener.
▶ Reattach the valve caps.
▶ Reattach the cover for pipe connections to the outdoor unit.
3.6

Mount the wired room controller

NOTICE
Damage to the wired room controller
Opening the wired room controller in the wrong way or tightening the
screws too tightly can damage it.
▶ Do no exert too much pressure on the wired room controller.
▶ Remove the wall plinth of the wired room controller ( Fig. 24).
– Insert the tip of a screwdriver at the bending point [1] on the rear
of the wired room controller.
– Lift up the screwdriver to lever open the wall plinth [2].
▶ If necessary, prepare the wall and communication wire ( Fig. 25).
– [1] Realise putty or insulating material.
– [2] Make an elbow in the cable.
▶ Attach the wall plinth to the wall ( Fig. 26, [1]).
▶ Fix the wired room controller to the wall plinth ( Fig. 28).
3.7.4

Connect the the wired room controller

NOTICE
Damage to the wired room controller or wiring
▶ Do not jam wires during installation.
▶ To avoid water entering the wired room controller when attaching the
cabling ( Fig. 25), use trap [2] and putty [1] to seal the plug-in
Climate 5000 L • Climate 5000i U/L – 6721841493 (2023/05)
3.7

Electrical connection

3.7.1

General notes

WARNING
Risk to life from electric shock!
Touching live electrical parts can cause an electric shock.
▶ Before working on electrical parts, disconnect all phases of the
power supply (fuse/circuit breaker) and lock the isolator switch to
prevent unintentional reconnection.
▶ Work on the electrical system must only be carried out by an
authorised electrician.
▶ An authorised electrician must determine the correct conductor
cross-section and circuit breaker. The maximum current
consumption of the technical data ( see chapter 10, page 61) is
decisive for this purpose.
▶ Observe safety measures according to national and international
regulations.
▶ If you identify a safety risk in the mains voltage, or if a short circuit
occurs during installation, inform the operator in writing and do not
install the appliances , until the problem has been resolved.
▶ All electrical connections must be made in accordance with the
electrical connection diagram.
▶ Only use a special tool to cut cable insulation.
▶ Connect the cable to the existing mounting clips / cable glands using
suitable cable ties (scope of delivery).
▶ Do not connect any additional consumers to the mains power supply
of the device.
▶ Do not mix up live and PEN conductor. This can lead to malfunctions.
▶ If the mains power supply is fixed, install an overvoltage protector
and isolator which is designed for 1.5 times the maximum power
input of the appliance.
3.7.2

Connecting the indoor unit

The indoor unit is connected via a 4-wire communication cable. Use
cables of the type H07RN-F with sufficient conductor cross-section.
NOTICE
Material damage can be caused by connecting the indoor unit
incorrectly
Voltage is supplied to the indoor unit via the outdoor unit.
▶ Only connect the indoor unit to the outdoor unit.
Connecting the communication cable
▶ Remove the cover of the indoor unit electronics.
▶ Secure cable to the strain relief and connect to the terminals L, N, S
and .
▶ Note assignment of wires to the terminals.
▶ Reattach the covers.
▶ Route the cable to the outdoor unit.
3.7.3

Installation of display unit

▶ Put the buckles of the display board  Fig. 22 into the grooves of
electric control box and push the display board down.
▶ Route the wire of the display unit through the cable clamp on the
electronic control unit and connect to the control board.
connector.
▶ Cables must be securely attached and must not be under tension.
Installation
55