Heat Controller B-MMC12FA-1 Piping length and elevation, Multi Piping Type, 18 / 24 kBtu/h KBtu/h

Installation

Piping length and elevation

Multi Piping Type

Max total length

Max length of

Min length of

Max Elevation

Max elevation

between each

Capacity

of all pipes

each pipe

each pipe

between indoor

indoor unit and

(A+B/A+B+C)

(A/B/C)

(A/B/C)

outdoor unit (h1)

units (h2)

18 kBtu

30 m (100 ft)

15 m (50 ft)

3 m (10 ft)

7.5 m (25 ft)

7.5 m (25 ft)

24 kBtu

30 m (100 ft)

15 m (50 ft)

3 m (10 ft)

7.5 m (25 ft)

7.5 m (25 ft)

36 kBtu

45 m (150 ft)

15 m (50 ft)

3 m (10 ft)

7.5 m (25 ft)

7.5 m (25 ft)

Pipe Size

Indoor Capacity

Gas

Liquid

Standard Length

Additional

Refrigerant

9 kBtu

9.52 mm (3/8")

6.35 mm (1/4")

7.5 m (25 ft)

20 g/m (0.22 oz/ft)

12 kBtu

9.52 mm (3/8")

6.35 mm (1/4")

7.5 m (25 ft)

20 g/m (0.22 oz/ft)

18 / 24 kBtu/h

h1

A

B

h1

B

36 kBtu/h

h2

h1

A

B

C

h1

h1

h2

h2

CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability.

- 21 - Service Manual