Electrical Connections - Lennox eCOMFORT R32 GAC 035S Installation, Operating And Maintenance Manual

2.- INSTALLATION

2.8.- ELECTRICAL CONNECTIONS

For safety reasons, LENNOX recommends that the electrical installation be carried out in accordance with EN 60204-1 and/or other
applicable Standards and Regulations when dealing with slightly flammable A2L refrigerants.
- BEFORE MAKING ANY ELECTRICAL CONNECTIONS, BE SURE THAT ALL CIRCUIT BREAKERS ARE OPEN AND SUPPLY IS OFF.
- IN ORDER TO CARRY OUT THE ELECTRICAL CONNECTIONS, FOLLOW THE ELECTRICAL DIAGRAM SUPPLIED WITH THE
UNIT.
WARNING:
Ignition source in a potentially flammable atmosphere: Fire hazard. Electrical connections are not an ignition source during
normal operation, but could become one if not installed correctly according to installation instructions. Ensure correct
mechanical and electrical installation.
Before connecting the electric power cables (L1 - L2 - L3), it is imperative to check the correct order of the 3 phases
before connecting to the main disconnect switch.
Use proper wire terminal material that is compatible to the type of wire (Copper or Aluminum) being used.
Use proper procedures and coatings when using aluminum wires to avoid galvanic corrosion which may lead to a short
circuit event.
PRECAUCIÓN:
Electrostatic discharge (ESD): Damage to the communication module. When connecting the wires to the terminal box, be sure to use
an antistatic device (for example: antistatic wrist straps) or apply sufficient ESD protection (for example: electrical grounding), as
electrostatic discharge can damage electronic components, communication module.
Recommended cable selection
The sizing of the power cables is the responsibility of the installer. it must be done in accordance with the electrical values of
each unit (noted at the time of ordering, the firm plate and on the electric diagram) and according to the regulations of each
country.
The table below is given as an indication and does not engage the responsibility of LENNOX.
Once the selection is made, the installer must make the adaptations if necessary.
The connections on the main switch of the unit are to be realized with lugs or bars. In case of use of aluminum wires, the
customer must use bi-metal terminals.
- WTHH: Water tank electrical heater.
- The cable sections have been calculated based on.
•
A distance of 50m and variation of -10V.
•
XLPE insulation cupper cable over perforated cable tray.
•
Max. Tª: 50ºC
•
Type of cable in Cu RV-K.
- Do not start the unit if the drop is greater than this.
- Ground wires must be properly connected and have a greater length than the phase wires.
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022 • 64 •