York HTCA Installation Manual download pdf (Page 10)

ENGLISH

Indoor Unit Fixing

• Thread the indoor unit piping and cable through the hole.

• Hang the top of the unit onto the upper ridge of them in mounting plate.

• Make sure that the unit is correctly hung in place by sliding it to the left, then to the right.

• Press the bottom left and bottom right hand corners of the unit against the mounting plate until the xing prongs click

into place in the retainers provided to that eect.

Drainage line

Interconnection cable

Note: ehtotdepatebdluohsenilnoitaucaveetasnednocehT

refrigerant lines with vinyl tape.

a) Access plate for the

condensate drainage

pump detection

(condensate pump is

available as an

accessory).

Condensate

drainage line

Vinyl tape

OUTDOOR UNIT

Fixing and Piping

• Piping must be performed by qualied personnel

according to good refrigeration systems practices.

• Piping materials and insulation materials must be of

refrigerant quality.

• Select the pipe diameters according to the size of unit

and cut the pipe to design length by using pipe cutter.

• Install the are nuts and are the end of the pipes.

• Check that no foreign bodies are inside the piping.

• Align the central of the connecting pipes and tighten

the are nut.

• Fix piping with pipe clamps and check that any pipe

vibrations cannot be transmitted to the building

structure.

• Connect the pipe correctly.

• Do not apply the excessive torque.

•

Use an appropriate bending tool to form curves and

avoid over-tightening the refrigerant tubes.

• To prevent heat loss, the two lines must be insulated

separately.

Maximum Piping Length

The suction line must have a 2% gradient up to the

compressor on horizontal sections.

Where the dierence in elevation between the indoor unit

and outdoor unit is greater than 5 meter, install an oil trap

every 5 meters.

Refrigerant piping connections

(FLARE connections)

To avoid alteration of unit capacities, check that piping

lengths and changes in elevation are kept to a strict

minimum.

Before connecting the refrigerant lines, follow the

procedures below (if pre-charged connection lines are

not supplied):

- Select copper pipe diameters according to the size of

unit to be installed.

- Install the refrigeration lines, checking that no foreign

bodies get inside the piping.

- Install the are connectors and are the ends of the

pipes.

- Evacuate the piping. This operation, which should last

at least 15 minutes if there are large piping lengths

and changes in elevation, should be followed by a leak

test.

Refrigerant charge to be added per extra

meter of piping length when more than 7

meters.

NOTE

Unit size

12 18

65 65

g/m

J435.indd 10 1/22/08 11:13:56 AM

Unit size

Max. refrigerant

pipe length

Max. dierence

in level

12 18

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 22 23

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York HTCA Installation Manual Page 10

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