Connecting Signal/Power Cable - Bosch Climate 5000 Series Installation Manual

Installation Manual

8 Connecting Signal/Power Cable

WARNING:

Before performing any electrical or wiring work, turn off
the main power to the system.
WARNING: ELECTRICAL HAZARD
 Before performing electrical work, read these regulations:
1. All wiring must comply with local and national
electrical codes, and must be installed by a licensed
electrician.
2. All electrical connections must be made according
to the Electrical Connection Diagram located on the
panels of the indoor and outdoor units.
3. If there is a serious safety issue with the power supply,
stop work immediately. Explain your reasoning to the
client and refuse to install the unit until the safety
issue is properly resolved.
4. Power voltage should be within 90-110% of
rated voltage. Insuffi cient power supply can cause
malfunction, electrical shock, or fi re.
5. When connecting power to fi xed wiring, install a surge
protector and main power switch with a capacity of
1.5 times the maximum current of the unit.
6. When connecting power to fi xed wiring, a switch or
circuit breaker that disconnects all poles and has
a contact separation of at least 1/8in (3mm) must
be incorporated in the fi xed wiring. The licensed
electrician must use an approved/listed circuit
breaker.
7. Only connect the unit to an individual branch /
dedicated circuit. Do not connect another appliance
to that circuit.
8. Make sure to properly ground the outdoor unit.
9. Every wire must be fi rmly connected. Loose wiring can
cause the terminal to overheat, resulting in product
malfunction and possible fi re.
10. Do not let wires touch or rest against refrigerant
tubing, the compressor, or any moving parts within
the unit.
Bosch Thermotechnology Corp. | 05.2019
Bosch Climate 5000 Series Ducted Type (Medium & High Static) Air Conditioner / Heat Pump | 25
The signal/power cable enables communication between the indoor and outdoor
units. You must fi rst choose the right cable size before preparing it for connection.
Cable Types
 H07RN-F type
Minimum Cross-Sectional Area of Power Cables
Table 10
Choose the right cable size
The size of the power supply cable, fuse, and switch needed is determined by the
maximum current of the unit. The maximum current is indicated on the nameplate
located on the side panel of the unit. Refer to this nameplate to choose the right
cable, fuse, or switch.
Outdoor Unit wiring
1. Prepare the cable for connection:
2. Open the front panel of the indoor unit.
Figure 53
3. Connect the u-lugs to the terminals. Match the wire colors/labels with
the labels on the terminal block. Firmly screw the u-lug of each wire to its
corresponding terminal.
Appliance Amps (A)
10
13
18
25
30
Take note of fuse specifi cations
The system's circuit board (PCB) is designed with a fuse
to provide overcurrent protection. The specifi cations of the fuse
are printed on the circuit board, for example: T3.15A/250VAC,
T5A/250VAC, etc.
—
Using wire strippers, strip the rubber jacket from both ends
of signal/power cable to reveal about 15cm (6in) of the wires
inside.
—
Strip the insulation from the ends of the wires.
—
Using wire crimper, crimp u-type lugs on the ends of the wires.
AWG
18
16
14
12
10
Cover
Screw
Data subject to change