Daikin RZP100DVAL [44/255] Field piping

SiE25-110 Field Piping and Wiring

Field Piping and Wiring 35

1.2 Field Piping

This unit requires additional charging of refrigerant according to the length of pipe connected at the site.

When the entire refrigerant pipe length is within 30 meters, the additional changing is not needed.

Take the following steps for proper charging.

(1) Additional charging of refrigerant

Select the appropriate refrigerant charging amout from Table 2, 3 and charge the refrigerant. Fill out the

notice plate attached in the rear of the front plate (2) for future servicing.

•Pair-type

Table 1 Additional charging refrigerant amount (unit: kg)

Simultaneous operation multi-type

•Find the entire pipe length by totaling that of each pipe in the order of the main pipe (L1), and branched

pipes (L2), (L3) calculate the excess length going over 30 meters, then select from Table 3 the amount of

refrigerant corresponding to the excess length.

The total value is the amount required for additional charging.

Table 2 Additional charging amount (unit: kg)

(2) Complete charging of the refrigerant

When the entire refrigerant pipe length is within 30 meters, charge the refrigerant in accordance with the

amount mentioned in the nameplate, and when the pipe length exceeds 30 meters, the charging amount

mentioned in the nameplate and that required for additional charging are to be totaled as the net charging

amount.

*Vacuum drying when refilling the refrigerant will not be sufficient if done only at the shut-off valve service

port (gas and liquid sides), so it should be done from a service port set up on the pipe leading from the out-

door unit 4-path switch valve to the heat exchanger.

When connected to indoor units When connected to two indoor units

Pipe excess length over 30 meters 20m or less 40m or less

71, 100, 125, 140 type

0.8 1.6

Pipe excess length over 30 meters 10m or less 20m or less 30m or less 40m or less

Liquid pipe

9.5 0.4 0.8 1.2 1.6

One way length of pipe (L)

Branched pipe

(L2)

One-way length of pipe (L) : L1+L2+L3

Branched pipe (L3)

Main pipe (L1)

(S2535)