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System Heat Pump Outdoor Unit - MegaFrio

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Refrigerant piping system<br />

◆ Y branch method<br />

CRUN458S0<br />

Example : 5 indoor units<br />

connected<br />

: outdoor unit<br />

: 1st branch<br />

(branch union)<br />

: indoor units<br />

: downward<br />

indoor unit<br />

➲ Piping diameter (A)<br />

- Liquid pipe : Ø12.7mm(1/2 inch)<br />

- Gas pipe : Ø19.05mm(3/4 inch)<br />

30m<br />

H<br />

A<br />

B<br />

h<br />

A<br />

a<br />

C<br />

1<br />

12m<br />

B<br />

Refrigerant piping installation<br />

L 70m<br />

l 30m<br />

C D e<br />

b c d<br />

C C C<br />

2 3 4<br />

➲ Refrigerant pipe diameter from branch to branch (B,C,D)<br />

Downward indoor unit total capacity<br />

[kW(Btu/h)]<br />

➲ Total pipe length = A+B+C+D+a+b+c+d+e ≤ 100m<br />

L<br />

l<br />

H<br />

h<br />

~8.2(28,000)<br />

~15.0(51,000)<br />

Longest pipe length<br />

A+B+C+D+e ≤ 70m<br />

Longest pipe length after 1st branch<br />

B+C+D+e ≤ 30m<br />

Liquid pipe<br />

(mm)<br />

Ø9.52<br />

Ø12.7<br />

Difference in height(outdoor ↔ indoor)<br />

H ≤ 30m ( 20m : outdoor is lower than indoor units)<br />

Difference in height (indoor ↔ indoor)<br />

h ≤ 12m<br />

Gas pipe<br />

(mm)<br />

Ø15.88<br />

Ø19.05<br />

C<br />

Installation Manual 21<br />

5<br />

D<br />

ENGLISH

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