CAUTION
Earthing arrangements
The Hydro Unit and related equipment must be earthed in accordance with your local and national electrical
regulations.
It is essential that the equipment is earthed to prevent the electric shock and damage to the equipment.
Electrical connection to hydro unit
• Remove the front cover and the electrical box cover from the Hydro Unit.
• The Hydro Unit power cable, for the electrical back up heaters, must be sized in accordance with the
Wiring Specifications table shown on page 15
• Connect the Hydro Unit power cable, for the electrical back up heaters, to Terminal 02 as shown below.
Single Phase Units: Live conductor – Terminal L1
Neutral conductor – Terminal L2
Earth conductor – Earth terminal
Three Phase Units: Phase 1 conductor – Terminal L1
Phase 2 conductor – Terminal L2
Phase 3 conductor – Terminal L3
Neutral conductor – Terminal N
Earth conductor – Earth
• Ensure the Hydro Unit power cable, for the electrical back up heaters, is secured using the cable clamp
fitted in the electrical box.
• Ensure the Hydro Unit power cable connection (for the electrical back up heaters) terminals are tight.
Outdoor unit to hydro unit electrical connection
• Ensure electrical circuits are isolated before commencing work.
• The Outdoor Unit to Hydro Unit interconnecting cable must be sized in accordance with the “Wiring
Specification” table shown on page 15
• Connect the Outdoor Unit to Hydro Unit interconnecting cable as shown in the diagram above.
• Ensure the Outdoor Unit to Hydro Unit interconnecting cable is secured using the cable clamp fitted in the
electrical box.
• Ensure the Outdoor Unit to Hydro Unit interconnecting cable connection terminals are tight.
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