Mitsubishi Heavy Industries FDC508HES3 Specifications download pdf (Page 10)

610

High 0.032

Air flow

Low 0.022

18.2.6 Selection chart

Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can

be obtained in the following way.

Net capacity = Capacity shown on specification × Correction factors as follows.

(1) Coefficient of cooling and heating capacity in relation to temperatures

Outdoor air W.B. temperature (˚CW.B.)

Indoor air W.B. temperature (˚CW.B.)

ISO-T1 Standard condition

Heating operation

Indoor air D.B.

temperature (˚CD.B.)

Cooling operation

Outdoor air D.B.

temperature (˚CD

.B.)

Coefficient of cooling and heating ca-

pacity in relation to temperature

ISO-T1 Standard condition

Cooling

Heating

Applicable range

(2) Correction of cooling and heating capacity in relation to air flow rate control (fan speed)

Coefficient: 1.00 at High, 0.95 at Low

(3) Correction of cooling and heating capacity in relation to one way length of refrigerant piping

It is necessary to correct the cooling and heating capacity in relation to the one way equivalent piping length between the

indoor and outdoor units.

Note (1) Equivalent piping length can be obtained by calculating as follows.

[φ19.05(3/4″)]: Equivalent piping length = Real piping length + (0.15 × Number or bends in piping)

[Equivalent piping length < Limitation length of piping + 5m]

Cooling

Equivalent piping length

(1)

Heating

7.5

1.0

0.995

1.0

0.980

1.0

0.970

1.0

0.955

0.998

0.945

0.998

0.930

0.993

0.920

0.993

0.905

0.988

0.895

0.988

0.880

10 15 20 25 30 35 40 45 50 55m

(a) Table of bypass factor

Item

Model

FDF508HES-SB

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16

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Mitsubishi Heavy Industries FDC508HES3 Specifications Page 10

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