Preparation Of Piping; Pipe Length, Elevation And Refrigerant Charge - Fedders R407C Service Manual

Large split unit (r407c)

Hide thumbs

Table Of Contents

Table of Contents

Pipe Length, Elevation and refrigerant charge

• Each outdoor unit comes with a

refrigerant charge that is sufficient for

use with interconnecting tubing up to

7.5 metres.

• If the required interconnecting tube

exceeds 5 metres, for each additional

metre, add the amount of refrigerant

according to the table as shown below.

Liquid Pipe

Size

1/4"

3/8"

• The recommended maximum allowable

tubing length between indoor and

outdoor is 15 metres.

• The recommended maximum allowable

elevation between indoor and outdoor is

5 metres.

Cutting The Pipe And The Cables.

• Measure the distance between the

indoor and the outdoor units.

• Cut the pipe length about 10% more

than the measured distance.

• Cut the electrical cable with about 2

metres more than the measured dis-

tance.

Additional

Refrigerant

21 g/m

57 g/m