Trane Variable Refrigerant Flow System Mini Outdoor Unit Series Instalační manuál stáhnout pdf (Strana 34)

34 VRF-SVN33A-EN

Refrigerant

After successful leak testing and vacuum drying, calculate the amount of refrigerant needed and

then charge the system, as explained in this section.

Calculating the Refrigerant

The initial refrigerant quantity (given in Table 15) is charged into the unit at the factory.

Calculate the total amount of additional refrigerant to add to the system as follows:

Total additional refrigerant = [total length of 3/8 in. (0.52 mm) liquid piping x 2.12 oz (60 g)] + [total

length of 1/4 in. (6.35 mm) liquid piping x 0.71 oz (20 g)] + [total refrigerant quantity for all

connected indoor units (refer to Table 16)].

Table 15. Initial refrigerant quantity for each mini outdoor unit model

Model

4TVH0036B100NB (3 ton) 4TVH0048B100NB (4 ton) 4TVH0053B100NB (5 ton)

Initial refrigerant

quantity: lb (kg)

7.1 (3.2) 7.1 (3.2) 7.3 (3.3)

Table 16. Refrigerant quantity for each indoor unit

Capacity (MBH)

7. 5 9 9.5 12 18 20 24 30 36 48 76.8 96

Model

Refrigerant quantity: lb (kg)

1-way cassette

(4TVE00**B100NB)

0.55

(0.25)

0.55

(0.25)

0.55

(0.25)

Mini 4-way cassette

(4TVB00**B100NB)

0.82

(0.37)

0.82

(0.37)

0.82

(0.37)

0.82

(0.37)

4-way cassette

(4TVC00**B100NB)

0.99

(0.45)

0.99

(0.45)

0.99

(0.45)

1.52

(0.69)

1.52

(0.69)

1.52

(0.69)

Slim duct

(4TVL00**B100NB)

0.53

(0.24)

0.53

(0.24)

0.53

(0.24)

0.99

(0.45)

0.99

(0.45)

0.93

(0.42)

0.93

(0.42)

1.37

(0.62)

MSP duct

(4TVD00**B100NB)

0.62

(0.28)

0.62

(0.28)

1.19

(0.54)

1.19

(0.54)

1.50

(0.68)

HSP duct

(4TVA00**B100NB)

1.50

(0.68)

1.50

(0.68)

2.60

(1.18)

2.60

(1.18)

High-wall

(4TVW00**B100NB)

0.53

(0.24)

0.53

(0.24)

0.53

(0.24)

0.79

(0.36)

0.79

(0.36)

0.79

(0.36)

Convertible

ceiling/floor

(4TVX00**B100NB)

0.86

(0.39)

0.86

(0.39)

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 51 52

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