–20–
• Fix the unit in a horizontal position.
When unit is fixed to slant, it may cause overflow of drainage.
• Install the unit within the dimension according to the figure below.
• Use level gauge or vinyl hose to confirm whether the unit is fix horizontally.
Remove the part for transportation
Be sure to remove the transportation part before operating the unit.
Front view
0 to 5 mm
Set the drain pipe connecting port
side within 5 mm lower than
opposite side.
Side view
± 5 mm
Set the front and air back sides are
within 5 mm with each other.
6 Water piping
• Install water pipes according to the regulations of respective countries.
• Install water pipes in the freeze-free place.
• Make sure that water pipes have sufficient pressure resistance.
The design pressure is 1.0 MPa.
• Do not use zinc plated water pipes. When steel pipes are used, insulate both ends of the pipes.
• Copper pipes are recommended.
• The water to be used must meet the water quality standard specified in EU directive 98/83 EC.
• After the vacuuming is completed, carry out the following procedure before adding refrigerant.
Plate heat exchanger may explode because the water in the plate heat exchanger frozen.
To avoid this phenomenon, ensure that the VRF system is fully commissioned, including the control system,
before filling the water circuit.
• The hot water module and the buffer/cylinder tank must be installed on the same floor height.
• The water piping on the inlet side of the hot water module must not be connected with right-angled loop piping
(refer to the figure below).
• When flow switch detects a decrease in the water flow rate, the outdoor unit stops.
Buffer or
Cylinder tank
Incorrect
Buffer or
Cylinder tank
Pump
Pump
Incorrect
39-EN 40-EN
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