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Installation Instructions
Bosch Climate 5000 Series Wall Mounted Ductless Split Air Conditioner / Heat Pump (06.2022)
Step 6: Connect signal/power cable
DANGER: ELECTRIC HAZARD
Before performing any electrical or wiring work, turn off the
main power to the system.
WARNING: ELECTRIC 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 circuit breaker.
7.
Only connect the unit to an individual branch circuit
outlet. Do not connect another appliance to that
outlet.
8.
Make sure to properly ground the outdoor unit. The
ground cable for the indoor unit shall be in the multi-
conductor cord that connects the outdoor unit to the
indoor 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.
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.
Minimum Cross-Sectional Area of Power Cables
Appliance Amps (A)
AWG
10
18
13
16
18
14
25
12
30
10
Table 2
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.
Take note of fuse specifi cations
The air conditioner’s circuit board (PCB) is designed with a fuse
to provide overcurrent protection. The specifications of the fuse
are printed on the circuit board, for example: T3.15A/250VAC,
T5A/250VAC, etc.
1.
Prepare the cable for connection:
—
Using wire strippers, strip the rubber jacket from both ends of
signal/power cable to reveal about 40mm (1.57in) 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.
2.
Open the front panel of the indoor unit.
3.
Using a screwdriver, open the wire box cover on the right side of the unit.
If a quick-connect cable is attached to the indoor unit's terminal block,
remove this cable and discard. This quick-connect cable is used in the
manufacturer production testing process.
