Page 1 MCQUAY DIGITAL SCROLL SYSTEM Unit & Piping Selection

Page 2 Sample of Installation

Page 3 Main Factors to consider during Piping Selection Location of equipment Indoor Unit Outdoor Unit Refnet & Distributor Joint Unit & Piping Selection These item will influence the piping layout and length of the design

Page 4 Some other factors to consider during Piping Selection Equivalent Piping Length Type of Joint for branches Outdoor capacity factor Piping length & height factor Refrigerant Pipe Specification Unit & Piping Selection

Page 5 Equivalent length is the converted length and includes parts such as elbow, which has pressure losses in the pipe. The formula is as follow: Equivalent length = Real length of tubing + No. of elbow × Equivalent length of each elbow + No. of oil trap ×Equivalent length of each oil trap Equivalent Piping Calculation

Page 6 Restriction of Piping Length

Page 7 Important Factor to Consider Example: Outdoor Model : MDS100BR Pipe Diameter : 28.6 mm Main Pipe : 80m Branch Length: 20m Elbows: 10 units Oil traps: 3 units Equivalent Length = Real length of tubing + No. of elbow × Equivalent length of each elbow + No. of oil trap ×Equivalent length of each oil trap = ( ) + (10 X 0.5) + (3 X 3.7) = m

Page 8 When the equivalent length is over 90% of the maximal real length the diameter of the main tubing (from the outdoor unit to the first branch joint) should be one size bigger than normal. Important Criteria After expanded the gas pipe to a larger diameter, the equivalent length need to be recalculate. The formula is as follow: Expanded Equivalent Length = Equivalent length of main piping X equivalent length of the branch Criteria 1 Criteria 2

Page 9 Important Factor to Consider Maximum allow actual length for 10Hp is 125m Calculated Equivalent Length is 116.1m Ratio of Equivalent Length over Maximum allow Actual Length= 92.88% Equivalent length is over 90% of the maximal real length the diameter of the main tubing. Hence the gas Pipe of MDS100BR need to change. Example:

Page 10 Refrigerant Copper Pipe Specification : MDS-B Unit & Piping Selection

Page 11 Important Factor to Consider Example: Hence the gas Pipe of MDS100BR need to change from 28.6 mm to 34.9 mm After expanded the gas pipe to a larger diameter, the equivalent length need to be recalculate. Expanded Equivalent Length = Equivalent length of main piping X equivalent length of the branch Main Pipe : 80m Branch Length: 20m Elbows: 10 units Oil traps: 3 units Equivalent Length = Real length of tubing + No. of elbow × Equivalent length of each elbow + No. of oil trap ×Equivalent length of each oil trap = ( ) + (10 X 0.5) + (3 X 3.7) = m Expanded Equivalent Length = [80 + (10 X 0.5) + (3 X 3.7)] X Expanded Equivalent Length = m

Page 12 Type of Joint for branches  Influence the piping layout design Outdoor capacity factor  Influence by the design ambient temperature and indoor temperature Piping length & height factor  Influence by the location of outdoor and the total piping length Refrigerant Pipe Specification  Use to determine the branches diameter Unit & Piping Selection

Page 13 Selection of branch joint / distributors for MDS Unit & Piping Selection

Page 14 MDS-Y1~Y4 dimensional drawing Unit & Piping Selection

Page 15 MDS-Y6 dimensional drawing Unit & Piping Selection

Page 16 MDS-Y7 dimensional drawing Unit & Piping Selection

Page 17 MDS-C1 dimensional drawing Unit & Piping Selection

Page 18 MDS-C2~C3 dimensional drawing Unit & Piping Selection

Page 19 Unit & Piping Selection Using Distribution Header may lead to imbalance refrigerant flow.

Page 20 Connection Type of Refnet Joint/Distributors Unit & Piping Selection Refnet Joint

Page 21 Unit & Piping Selection Connection Type of Refnet Joint/Distributor Distributor

Page 22 Unit & Piping Selection Connection Type of Refnet Joint/Distributors Refnet Joint Distributor

Page 23 Unit & Piping Selection Connection Type of Refnet Joint/Distributors Refnet Joint Distributor

Page 24 Unit & Piping Selection Cooling Capacity Correction Factor

Page 25 Unit & Piping Selection Heating Capacity Correction Factor

Page 26 Cooling cap. factor Unit & Piping Selection Cooling Capacity Correction Factor

Page 27 Unit & Piping Selection Heating Capacity Correction Factor

Page 28 Refrigerant Pipe Specification : MDS-A Unit & Piping Selection

Page 29 Refrigerant Pipe Specification : MDS-B Unit & Piping Selection

Page 30 Unit & Piping Selection Example C A B D E F Building Type: Bungalow

Page 31 Example Requirement Cooling only model Ambient temperature : 35.0 °C Indoor temperature : 22.0 °C  Other Information Piping length ： 40m Height between I/O ： 4m Outdoor Unit located below indoors Unit & Piping Selection

Page 32 Unit & Piping Selection Indoor Requirement

Page 33 Example  Total Indoor capacity is kW Unit & Piping Selection

Page 34 Example Selection Criteria Indoor cap. should between 50% ~ 120% of the outdoor cap. We recommend that the outdoor capacity equals to the indoor capacity or a little larger than the indoor capacity Unit & Piping Selection

Page 35 Example Selected Outdoor : MDS100B Cooling Capacity: 28.0kW Comply to selection criteria Unit & Piping Selection

Page 36 Example Selected Outdoor and Indoor Model Unit & Piping Selection

Page 37 Example Outdoor Capacity factor Cooling only model Ambient temperature : 35.0 °C Indoor temperature : 22.0 °C 1.08 Unit & Piping Selection

Page 38 Example  Piping length & height factor Piping length ： 40m Height between I/O ： 4m Outdoor Unit located below indoors 97% Unit & Piping Selection

Page 39 Example Total Capacity = Outdoor Capacity X Outdoor Capacity Factor X Piping length & height Factor = 28.0 kW X 1.08 X 97% = 29.3 kW Unit & Piping Selection

Page 40 Unit & Piping Selection Example C A B D E F Building Type: Bungalow

Page 41 Example 1.Selection pipe diameter A B C D E MDS100B MCCD 025C MWMD 010G MWMD 020G MCKD 020A MWMD 010G 7.03 kW 2.78 kW 5.59 kW 2.78 kW Unit & Piping Selection

Page 42 Refrigerant Pipe Specification : MDS-B Unit & Piping Selection

Page 43 A B C D E MDS100B MCCD 25C MWMD 10G MWMD 20G MCKD 20A MWMD 10G 7.03 kW 2.78 kW 5.59 kW 2.78 kW Example Main pipe diameter : ø 12.7mm / ø 28.6mm Calculate the downstream capacity Point A A-B-C : kW A-D-E : kW Point B B-C : 5.59 kW D-E : 8.37 kW Unit & Piping Selection

Page 44 Refrigerant Pipe Specification : MDS-B Unit & Piping Selection Point A A-B-C : kW A-D-E : kW

Page 45 A B C D E MDS100B MCCD 25C MWMD 10G MWMD 20G MCKD 20A MWMD 10G 7.03 kW 2.78 kW 5.59 kW 2.78 kW Example Main pipe diameter : ø 12.7mm / ø 28.6mm Unit & Piping Selection A-B diameter : ø 9.52mm / ø 19.05mm A-D diameter : ø 9.52mm / ø 19.05mm

Page 46 A B C D E MDS100B MCCD 25C MWMD 10G MWMD 20G MCKD 20A MWMD 10G 7.03 kW 2.78 kW 5.59 kW 2.78 kW Example Unit & Piping Selection Point B B-C : 5.56 kW B-MCCD25C : 7.03 kW

Page 47 Refrigerant Pipe Specification : MDS-B Unit & Piping Selection Point B B-C : 5.56 kW B-MCCD25C : 7.03 kW

Page 48 A B C D E MDS100B MCCD 25C MWMD 10G MWMD 20G MCKD 20A MWMD 10G 7.03 kW 2.78 kW 5.59 kW 2.78 kW Example Main pipe diameter : ø 12.7 / ø 28.6 Unit & Piping Selection A-B: ø 9.52 / ø A-D: ø 9.52 / ø B-MCCD25C: ø 9.52 / ø15.88 B-C: All unit in mm

Page 49 Example LocationCapacity (kW) Liquid pipe (ø,mm)Gas pipe (ø,mm) InletOutletInletOutlet A-B A-D B-C D-E Unit & Piping Selection

Page 50 Example A B C D E MDS100B MCCD 25C MWMD 10G MWMD 20G MCKD 20A MWMD 10G A-B diameter : ø 9.52mm / ø 19.05mm B-C diameter : ø 9.52mm / ø15.88mm A-D diameter : ø 9.52mm / ø 19.05mm D-E diameter : ø 9.52mm / ø15.88mm Main pipe diameter : ø 12.7mm / ø 28.6mm Unit & Piping Selection

Page 51 Example 2.Selection of branch Select the refnet joint of point A A (liquid) : MDS-Y2 A (gas) : MDS-Y1 Unit & Piping Selection A-D diameter : ø 9.52 / ø Main pipe diameter : ø 12.7 / ø 28.6 A-B diameter : ø 9.52 / ø All unit in mm A

Page 52 Example A B C D E MDS100B MCCD 25C MWMD 10G MWMD 20G MCKD 20A MWMD 10G A-B: ø 9.52 / ø B-C: ø 9.52 / ø15.88 A-D: ø 9.52 / ø D-E: ø 9.52 / ø15.88 Main pipe diameter : ø 12.7 / ø 28.6 Unit & Piping Selection All unit in mm

Page 53 Example 2.Selection of branch Select the refnet joint of point A (liquid): MDS-Y2 A (gas) : MDS-Y1 B (liquid): MDS-Y3B (gas) : MDS-Y4 C (liquid): MDS-Y2 C (gas): MDS-Y2 D (liquid): MDS-Y2 D (gas): MDS-Y4 E (liquid): MDS-Y2 E (gas): MDS-Y4 Unit & Piping Selection

Page 54 Example Formula: G = ∑ Li* Gi Using liquid tube length to calculate required refrigerant → Add in refrigerant G : Refrigerant charge amount L i : The each section of liquid tube length in all (m) G i : Charge amount per length （ g/m ） Unit & Piping Selection

Page 55 Example 5m (9.52mm) 2m (6.35mm) 15m (9.52mm) 5m (6.35mm) 2m (6.35mm) 3m (9.52mm) 1m (6.35mm) 1m (9.52mm) 1m (6.35mm) A B C D E MDS100B MCCD 25C MWMD 10G MCKD 20A 1m (12.70mm) Unit & Piping Selection MWMD 10G MWMD 20G Total Piping Length 12.7mm – 1m 9.52mm – 29m 6.35mm – 11m

Page 56 Example Additional charge amount : = ∑ Li* Gi = (Piping Length for 15.88mm X Refrigerant Charge Amount) + (Piping Length for 12.7mm X Refrigerant Charge Amount) + (Piping Length for 9.52mm X Refrigerant Charge Amount) + (Piping Length for 6.35mm X Refrigerant Charge Amount) = (0 X 180) + (1 x 120) + (29 x 80) + (11 x 50) = 2990 g Unit & Piping Selection Liquid tube diameter (mm) Refrigerant charge amount (g/m) Total Piping Length 12.7mm – 1m9.52mm – 29m6.35mm – 11m

Page 57 EXV Box EXV Box EXV Box EXV Box Unit & Piping Selection Electronic Expansion Valve

Page 58 Unit & Piping Selection Electronic Expansion Valve 3 units 1 unit 2 units

Page 59 Unit & Piping Selection

Page 60 Software Demo

Page 61 Thank You