Engineered for flexibility and performance.

Branch Joint Selection

室外机

纯粹由分支接头的连接

控制器

分支接头

室外机Outdoor unit

Outdoor unit

Branch joint

Connection by the branch joint completely

Controller

Connection type of branch joint/ branch header:

Engineered for flexibility and performance.

Engineered for flexibility and performance.

After the branch header no more branching is permitted

Outdoor unit

Branch header

Mistake

MistakeMistake

Indoor unit

Controller

Engineered for flexibility and performance.

Selection of branch joint / header for MDS

 Model

Branch joint(2 branch)

MDS-Y1MDS-Y2MDS-Y3MDS-Y4MDS-Y5

Branch header(4 branch)

MDS-C1MDS-C2MDS-C3

Engineered for flexibility and performance.

MDS-Y1~Y4 dimensional drawing

Engineered for flexibility and performance.

MDS-Y5 dimensional drawing

Engineered for flexibility and performance.

MDS-C1 dimensional drawing

Engineered for flexibility and performance.

MDS-C2~C3 dimensional drawing

Engineered for flexibility and performance.

Diameter & thickness requirement for refrigerant copper pipe

A-series

Engineered for flexibility and performance.

B-series

Diameter & thickness requirement for refrigerant copper pipe

Engineered for flexibility and performance.

Piping selection & unit selectionPiping selection & unit selection

Cooling cap. factor

Engineered for flexibility and performance.

Piping selection & unit selectionPiping selection & unit selection

Heating cap. factor

Engineered for flexibility and performance.

MDS100AR AMCC020 MCK020

MCC015 MCK020 MCC010

B C

D E

MCK020

1. Selection of diameter for piping

2. Selection of branch

Selection step:

Example

Engineered for flexibility and performance.

1) Main pipe & terminal pipe dia. (Equivalent length<90m)

Main pipe ： φ15.88 / φ28.6

Terminal pipe : (Same as indoor units ）2) Calculate the downsteam cap.

Of point A

A-B-C:

A-D-E:

17.4 KW

11.8 KW

3) Select the dia. from the table

A-B Dia:A-D Dia :

Φ12.7 / φ25.4

Φ9.52 / φ19.05

4) Same as item 3

B-C Dia:D-E Dia:

Φ9.52 / φ19.05

Φ9.52 / φ15.88

1. Piping dia selection

2. Branch selection

Selection step:

Engineered for flexibility and performance.

1) Select the branch of point A

A （ Liquid ）： MDS-Y2A （ Gas ）： MDS-Y1

2) Same as item 1

B （ Liquid ）： MDS-Y2

B （ Gas ）： MDS-Y1

C （ Liquid ）： MDS-Y2

C （ Gas ）： MDS-Y4

D （ Liquid ）： MDS-Y2

D （ Gas ）： MDS-Y4

E （ Liquid ）： MDS-Y2

E （ Gas ）： MDS-Y2

1. Selection of diameter for piping

2. Selection of branch

Selection step:

Engineered for flexibility and performance.

Additional Charge of Refrigerant

G=∑ Li* Gi

Li

Formula:

The each section of liquid tube length in all （ m ）

Gi Charge amount per length （ g/m ）

Using liquid tube length to calculate required refrigerant → Add in refrigerant

G Refrigerant charge amount

Engineered for flexibility and performance.

MDS100AR A

MCC020 MCK020

MCC015 MCK020 MCC010

B C

D E

MCK020

60m(5/8)

6m(1/2) 8m 8m

8m8m 8m

7m(1/4)7m 7m(1/4)

8m

Complete selection of pipe & branch

Additional Charge of Refrigerant

Engineered for flexibility and performance.

Additional Charge of Refrigerant

G=180*60+120*6+80*55+50*14

Additional charge amount GAdditional charge amount G ：：

=6900 （ g）

Engineered for flexibility and performance.

MDS unit selection software

McQuay MDS unit selection software

Engineered for flexibility and performance.

MDS control & monitoring software