Carrier XCT7 Installations- Und Benutzerhandbuch Seite 35

Electric Wiring and Application
2. If the power cord length is longer than 20m, please increase the cable cross-sectional area, to avoid overload
caused by accidents.
3. When the voltage drop at the power supply line exceeds 2%, increase the wire diameter accordingly.
4. The air switch and the power line are calculated according to the maximum power of the unit, and the different
combinations of modules need to follow the specific parameters of the combination module. For new calculations
and the calculation methods refer to the electrician manual.
Power line installation instructions
1. An air conditioning unit is Class I appliance, hence please be sure to take reliable grounding measures.
2. The machine must be connected to the ground according to EN 60364.
3. Earth resistance should meet the national standard GB 50169 requirement.
4. The yellow and green double colour line of the air conditioning unit is the ground wire. Do not move it for other
uses and do not cut it. It should not be fixed with a self-tapping screw. Otherwise, it will present the risk of electric
shock.
5. The user's power supply must provide reliable grounding. Please do not connect the ground wire to the following
places. (1) water pipe (2) gas pipe; (3) drainage pipe and (4) other places which professionals deem unreliable.
6. The power cord and the communication line should not be interwoven together. The distance should be greater
than 20cm apart, or it may cause the crew communication to be abnormal.
Please follow the following guidelines: Note:
Please connect the power cord with the appropriate circular terminal. PQ is
non-polar, ABC has a polarity, they must be correct while connecting.
The route is as follows:
Use attachment
sheath for walking
protection
The power line Signal line
28
Use the rubber plug of
attachment for walking
protection.