Kaysun Amazon Unitario Top Discharge Engineering Data Book Download Page 10 | Manualshive

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Part 1 - Gener

al In
forma

tion

Amazon Unitario Top Discharge

9

4

Selection Procedure

4.1 Procedure

Step 1: Establish design conditions

Step 2: Select indoor units

Step 3: Select outdoor unit

Notes:

1. If the indoor design temperature falls between two temperatures listed in the indoor unit’s capacity table, calculate the corrected capacity by interpolation.

If the indoor unit selection is to be based on total heat load and sensible heat load, select indoor units which satisfy not only the total heat load

requirements of each room but also the sensible heat load requirements of each room. As with total heat capacity, the sensible heat capacity of indoor

units should be corrected for indoor temperature, interpolating where necessary. For the indoor unit capacity tables, refer to the indoor unit technical
manuals.

Design temperature and humidity (indoor and outdoor)
Required heat load of each room
System peak load
Piping length, level differences
Indoor unit specifications (type and quantity)

Select indoor unit models ensuring that:

Indoor unit capacity corrected for indoor air temperature WB

1

≥ Required heat load ×Indoor unit safety factor

Decide indoor unit safety factor

Determine required total heat load on the outdoor unit

Provisionally select outdoor unit capacity based on combination ratio limitations

Confirm that the number of indoor units connected to the outdoor unit is within limitation

Is correctedoutdoor unit capacity ≥ Required total heat load on outdoor unit?

VRF system selection is complete

No

Yes

Correct cooling and heating capacities of the outdoor unit for the following items:
Outdoor air temperature / Indoor air temperature WB / Combination ratio / Piping length, level difference /
Piping heat loss / Frost accumulation (for heating capacity only)

Use the sum of the peak load of each room

Use the system peak load

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Summary of Contents for Amazon Unitario Top Discharge

Page 1: ...DN4S K2UF 450 DN4S K2UF 500 DN4S K2UF 560 DN4S K2UF 615 DN4S K2UF 670 DN4S K2UF 730 DN4S K2UF 785 DN4S K2UF 850 DN4S K2UF 900 DN4S Thank you very much for purchasing our air conditioner Before using...

Page 2: ...CONTENTS Amazon Unitario Top Discharge 1 CONTENTS Part 1 General Information 3 Part 2 Outdoor Unit Engineering Data 15 Part 3 System Design and Installation 134...

Page 3: ...Kaysun Amazon Unitario Top DischargeEngineering Data Book Amazon Unitario Top Discharge 2...

Page 4: ...Part 1 General Information Amazon Unitario Top Discharge 3 Part 1 General Information 1 Indoor and Outdoor Unit Capacities 4 2 External Appearance 6 3 Combination Ratio 8 4 Selection Procedure 9...

Page 5: ...KS E F Floor Standing KPDF Medium Static Pressure Duct KSDF Console KPDHF High Static Pressure Duct Table 1 1 2 Standard indoor unit capacity range Capacity Capacity index KCOF KCIF KCIBF KPDF KPDHF K...

Page 6: ...280 DN4S 12HP K2UF 335 DN4S 14HP K2UF 400 DN4S 16HP K2UF 450 DN4S 18HP K2UF 500 DN4S 20HP K2UF 560 DN4S 22HP K2UF 615 DN4S 24HP K2UF 670 DN4S 26HP K2UF 730 DN4S 28HP K2UF 785 DN4S 30HP K2UF 850 DN4S 3...

Page 7: ...rance 2 1 Indoor Units 2 1 1 Standard indoor units Table 1 2 1 Standard indoor unit appearance One way Cassette Compact Four way Cassette KCOF KCIF Four way Cassette Medium Static Pressure Duct KCIF K...

Page 8: ...neral Information Amazon Unitario Top Discharge 7 2 2 Outdoor Units Table 1 2 4 Outdoor unit appearance 10 12HP with single fan 14 16 18HP with single fan 20 22HP with dual fans 24 26 28 30 32HP with...

Page 9: ...units the total capacity of the fresh air processing units must not exceed 30 of the capacity of the outdoor unit and the combination ratio must not exceed 100 Table 1 4 2 Combinations of Indoor and o...

Page 10: ...ign temperature and humidity indoor and outdoor Required heat load of each room System peak load Piping length level differences Indoor unit specifications type and quantity Select indoor unit models...

Page 11: ...5 12 00 6 6 7 1 5 1 5 1 7 4 6 8 4 0 4 0 46 1 14 00 9 0 9 4 4 9 4 9 7 3 6 8 4 2 4 2 50 7 16 00 10 6 10 7 3 9 3 9 6 3 6 2 3 8 3 8 49 2 The maximum piping lengths and level differences in this example ar...

Page 12: ...W Table 1 5 3 Selected indoor units Room A Room B Room C Room D Peak heat load kW 10 6 10 7 5 1 5 1 Selected indoor unit KPDF 140 DN4 0 KPDF 140 DN4 0 KPDF 56 DN4 0 KPDF 56 DN4 0 Corrected TC kW 13 2...

Page 13: ...nnected indoor units is within the limitation Calculate the corrected capacity of the outdoor unit a The sum of the indoor unit CIs is 706 and the CI of the 20HP outdoor unit K2UF 560 DN4S E is 560 so...

Page 14: ...equivalent length of piping between farthest indoor unit and first outdoor branch joint the vertical axis shows the largest level difference between indoor unit and outdoor unit For level differences...

Page 15: ...Kaysun Amazon Unitario Top Discharge Engineering Data Book Amazon Unitario Top Discharge 14...

Page 16: ...ngineering Data 1 Specifications 16 2 Dimensions 19 3 Installation Space Requirements 23 4 Piping Diagrams 24 5 Wiring Diagrams 28 6 Electrical Characteristics 30 7 Functional Components and Safety De...

Page 17: ...t Fan Type Propeller Motor type DC Quantity 1 Motor output kW 0 56 0 56 0 92 Airflow rate m3 h 11000 11000 13000 Drive type Direct Refrigerant Type R410A Factory charge kg 11 11 13 Pipe connections3 L...

Page 18: ...Start up method Soft start Fan Type Propeller Motor type DC Quantity 1 2 Motor output kW 0 92 0 92 0 56 2 0 56 2 Airflow rate m3 h 13000 13000 17000 17000 Drive type Direct Refrigerant Type R410A Fact...

Page 19: ...Quantity 2 Oil type FAmazon Unitario Top Discharge8H Start up method Soft start Fan Type Propeller Motor type DC Quantity 2 Motor output kW 0 92 2 0 92 2 0 92 2 0 92 2 0 92 2 Airflow rate m3 h 25000...

Page 20: ...ing Data Amazon Unitario Top Discharge 19 2 Dimensions 10 12HP Figure 2 2 1 10 12 dimensions unit mm 1635 990 790 R 77 63 50 Detail R Table 2 2 1 10 12HP connection piping diameter unit mm Size 10HP 1...

Page 21: ...uid pipe connection port A Gas pipe connection port B Check port used to measure system pressure and charge additional refrigerant in maintenance process Detail R Table 2 2 2 14 16 18HP connection pip...

Page 22: ...ipe connection port A Gas pipe connection port B Check port used to measure system pressure and charge additional refrigerant in maintenance process Detail R Table 2 2 3 20 22HP connection piping diam...

Page 23: ...s unit mm 1830 1730 850 R Liquid pipe connection port A Gas pipe connection port B 55 63 62 Check port used to measure system pressure and charge additional refrigerant in maintenance process Detail R...

Page 24: ...1000 1000 1000 Front 1000 For multi row installation Figure 2 3 3 Multi row installation unit mm 100 500 100 500 100 500 100 500 1000 1000 1000 1000 1000 1000 Front Front Front 1000 1000 1000 1000 De...

Page 25: ...g Diagrams 10 12HP Figure 2 4 1 10 12HP piping diagram 7 1 15 12 9 3 2 4 5 6 11 10 14 8 8 13 EXVA EXVC E S C T3 T4 T6B T7C1 T7C2 T6A SV8A SV4 SV5 SV6 14 16 18HP Figure 2 4 2 14 16 18HP piping diagram...

Page 26: ...re 2 4 3 20 22 24HP piping diagram 7 1 1 15 12 9 3 4 5 6 11 11 10 10 8 13 EXVA E S C SV9 SV4 SV5 SV6 SV2 T3 T4 2 T7C1 T7C2 2 26 28HP Figure 2 4 4 26 28HP piping diagram 7 1 1 15 15 12 9 3 4 5 6 11 10...

Page 27: ...igh pressure sensor T6A Plate heat exchanger inlet temperature sensor 5 Oil separator T6B Plate heat exchanger outlet temperature sensor 6 Four way valve T7C1 Compressor A discharge temperature sensor...

Page 28: ...quicken the defrosting process Closed in cooling mode 7 Solenoid valve SAmazon Unitario Top Discharge Allows refrigerant to bypass the expansion valves Opens in cooling mode when discharge temperature...

Page 29: ...High pressure sensor Solenoid valve L8 Current sensor CN50 BR1 CN31 CN32 Red Red Blue Blue Black Ferrite core N 1 FAN B CN100 N8_1 T6B CN7 EEV CN27 O FAN CN26 O C CN20 O O EEVA T6B CN25 N CN1 CN51 L1...

Page 30: ...igh pressure sensor Crankcase heater Solenoid valve L8 Current sensor CN100 N8_1 T6B CN7 EEV CN27 O FAN CN26 O C CN20 O O EEVA T6B CN25 N CN1 CN51 L1 L2 L3 CN2 CN3 CN4 C e boa d Main board FAN B 1 O N...

Page 31: ...1 26HP K2UF 730 DN4S 50 380 415 342 440 52 9 62 3 63 20 19 8 0 92 2 13 1 28HP K2UF 785 DN4S 50 380 415 342 440 58 7 64 1 63 22 21 8 0 92 2 14 9 30HP K2UF 850 DN4S 50 380 415 342 440 64 9 72 5 80 20 3...

Page 32: ...top and discharge pipe temperature sensors 90 C 5k 3 Crankcase heater 30W 2 30W 4 Inverter module Inverter module temperature sensor 90 C 5k 5 Fan motor Safety thermostat On 115 C Off System High pre...

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Page 104: ...35 30 00 13 58 28 89 13 09 27 62 12 34 25 40 11 53 8 5 9 1 34 60 14 65 32 38 13 83 30 00 13 01 28 89 12 53 27 62 11 77 25 40 10 87 7 7 6 34 60 14 11 32 38 13 24 30 00 12 56 28 89 12 11 27 62 11 31 25...

Page 105: ...2 8 5 9 1 49 78 18 58 49 60 19 03 49 60 19 66 49 42 20 09 49 42 20 52 49 24 20 74 7 7 6 50 31 18 92 50 13 19 38 50 13 19 88 49 96 20 31 49 96 20 74 49 78 20 98 5 5 6 54 22 19 07 54 04 19 53 53 87 20 0...

Page 106: ...9 1 49 24 21 97 49 07 22 18 49 07 22 33 48 53 21 29 46 58 20 27 42 67 18 29 7 7 6 49 78 21 99 49 78 21 88 49 60 22 02 48 53 21 00 46 58 19 98 42 67 18 02 5 5 6 53 69 22 03 53 51 20 93 50 49 21 10 48 5...

Page 107: ...5 60 33 60 14 76 32 36 14 23 30 93 13 42 28 44 12 54 8 5 9 1 38 76 15 93 36 27 15 03 33 60 14 15 32 36 13 62 30 93 12 79 28 44 11 82 7 7 6 38 76 15 34 36 27 14 39 33 60 13 66 32 36 13 16 30 93 12 30 2...

Page 108: ...6 00 19 81 55 80 20 29 55 80 20 96 55 60 21 42 55 60 21 88 55 40 22 11 7 7 6 56 60 20 17 56 40 20 66 56 40 21 19 56 20 21 65 56 20 22 11 56 00 22 37 5 5 6 61 00 20 33 60 80 20 82 60 60 21 41 60 60 21...

Page 109: ...15 17 34 80 14 31 32 00 13 37 8 5 9 1 43 60 16 98 40 80 16 03 37 80 15 08 36 40 14 52 34 80 13 64 32 00 12 60 7 7 6 43 60 16 35 40 80 15 34 37 80 14 56 36 40 14 03 34 80 13 11 32 00 12 05 5 5 6 43 60...

Page 110: ...40 15 17 34 80 14 31 32 00 13 37 8 5 9 1 43 60 16 98 40 80 16 03 37 80 15 08 36 40 14 52 34 80 13 64 32 00 12 60 7 7 6 43 60 16 35 40 80 15 34 37 80 14 56 36 40 14 03 34 80 13 11 32 00 12 05 5 5 6 43...

Page 111: ...9 8 5 9 1 58 84 23 94 58 63 24 51 58 63 25 32 58 42 25 88 58 42 26 43 58 21 26 72 7 7 6 59 47 24 37 59 26 24 96 59 26 25 60 59 05 26 16 59 05 26 71 58 84 27 02 5 5 6 64 09 24 57 63 88 25 15 63 67 25 8...

Page 112: ...9 1 58 21 28 30 58 00 28 56 58 00 28 77 57 37 27 42 55 06 26 11 50 43 23 55 7 7 6 58 84 28 33 58 84 28 18 58 63 28 36 57 37 27 05 55 06 25 74 50 43 23 22 5 5 6 63 46 28 38 63 25 26 96 59 68 27 18 57 3...

Page 113: ...36 56 17 28 33 62 16 15 8 5 9 1 45 81 20 52 42 87 19 36 39 72 18 22 38 25 17 54 36 56 16 48 33 62 15 23 7 7 6 45 81 19 76 42 87 18 54 39 72 17 59 38 25 16 95 36 56 15 84 33 62 14 56 5 5 6 45 81 19 02...

Page 114: ...66 67 26 05 66 43 26 68 66 43 27 55 66 19 28 16 66 19 28 76 65 95 29 08 7 7 6 67 38 26 52 67 14 27 16 67 14 27 86 66 90 28 46 66 90 29 07 66 67 29 41 5 5 6 72 62 26 73 72 38 27 37 72 14 28 15 72 14 2...

Page 115: ...25 85 8 5 9 1 65 95 30 79 65 71 31 09 65 71 31 30 65 00 29 84 62 38 28 41 57 14 25 63 7 7 6 66 67 30 83 66 67 30 67 66 43 30 87 65 00 29 44 62 38 28 01 57 14 25 26 5 5 6 71 90 30 88 71 67 29 34 67 62...

Page 116: ...10 17 58 8 5 9 1 51 90 22 33 48 57 21 07 45 00 19 83 43 33 19 09 41 43 17 93 38 10 16 57 7 7 6 51 90 21 50 48 57 20 17 45 00 19 14 43 33 18 45 41 43 17 24 38 10 15 85 5 5 6 51 90 20 70 48 57 19 43 45...

Page 117: ...9 59 8 5 9 1 72 44 26 54 72 19 27 18 72 19 28 07 71 93 28 68 71 93 29 30 71 67 29 62 7 7 6 73 22 27 02 72 96 27 67 72 96 28 38 72 70 29 00 72 70 29 61 72 44 29 96 5 5 6 78 91 27 23 78 65 27 88 78 40 2...

Page 118: ...9 1 71 67 31 37 71 41 31 67 71 41 31 89 70 63 30 40 67 79 28 94 62 10 26 11 7 7 6 72 44 31 40 72 44 31 24 72 19 31 44 70 63 29 99 67 79 28 53 62 10 25 74 5 5 6 78 14 31 46 77 88 29 89 73 48 30 13 70 6...

Page 119: ...02 19 16 41 40 17 90 8 5 9 1 56 40 22 74 52 78 21 47 48 90 20 20 47 09 19 45 45 02 18 27 41 40 16 88 7 7 6 56 40 21 90 52 78 20 55 48 90 19 50 47 09 18 79 45 02 17 56 41 40 16 14 5 5 6 56 40 21 09 52...

Page 120: ...1 74 81 30 33 74 54 31 06 74 54 32 08 74 27 32 78 74 27 33 49 74 00 33 85 7 7 6 75 61 30 87 75 34 31 62 75 34 32 43 75 07 33 14 75 07 33 84 74 81 34 24 5 5 6 81 48 31 12 81 22 31 86 80 95 32 77 80 95...

Page 121: ...30 09 8 5 9 1 74 00 35 85 73 74 36 19 73 74 36 44 72 94 34 74 70 00 33 08 64 12 29 84 7 7 6 74 81 35 89 74 81 35 70 74 54 35 93 72 94 34 27 70 00 32 61 64 12 29 41 5 5 6 80 68 35 95 80 42 34 16 75 87...

Page 122: ...75 20 46 8 5 9 1 58 24 25 99 54 50 24 53 50 49 23 08 48 62 22 23 46 49 20 88 42 75 19 29 7 7 6 58 24 25 03 54 50 23 49 50 49 22 29 48 62 21 48 46 49 20 07 42 75 18 45 5 5 6 58 24 24 10 54 50 22 62 50...

Page 123: ...4 44 28 63 84 14 29 32 84 14 30 29 83 84 30 95 83 84 31 62 83 54 31 96 7 7 6 85 35 29 15 85 05 29 85 85 05 30 62 84 75 31 29 84 75 31 95 84 44 32 32 5 5 6 91 98 29 38 91 68 30 09 91 38 30 94 91 38 31...

Page 124: ...41 8 5 9 1 83 54 33 85 83 24 34 17 83 24 34 41 82 33 32 80 79 02 31 23 72 38 28 17 7 7 6 84 44 33 89 84 44 33 71 84 14 33 93 82 33 32 36 79 02 30 79 72 38 27 77 5 5 6 91 08 33 94 90 78 32 25 85 65 32...

Page 125: ...48 20 68 48 25 19 32 8 5 9 1 65 75 24 54 61 52 23 16 57 00 21 79 54 89 20 99 52 48 19 71 48 25 18 21 7 7 6 65 75 23 63 61 52 22 17 57 00 21 04 54 89 20 28 52 48 18 95 48 25 17 42 5 5 6 65 75 22 76 61...

Page 126: ...2 32 88 57 33 38 88 25 34 11 88 25 34 84 87 94 35 22 7 7 6 89 84 32 13 89 52 32 90 89 52 33 75 89 21 34 48 89 21 35 22 88 89 35 62 5 5 6 96 83 32 38 96 51 33 16 96 19 34 10 96 19 34 83 96 19 35 57 95...

Page 127: ...73 76 19 31 31 8 5 9 1 87 94 37 30 87 62 37 66 87 62 37 92 86 67 36 15 83 17 34 42 76 19 31 05 7 7 6 88 89 37 35 88 89 37 15 88 57 37 39 86 67 35 66 83 17 33 93 76 19 30 60 5 5 6 95 87 37 41 95 56 35...

Page 128: ...79 21 29 8 5 9 1 69 21 27 05 64 76 25 53 60 00 24 02 57 78 23 13 55 24 21 72 50 79 20 07 7 7 6 69 21 26 04 64 76 24 44 60 00 23 19 57 78 22 35 55 24 20 88 50 79 19 20 5 5 6 69 21 25 08 64 76 23 54 60...

Page 129: ...ing between farthest indoor unit and first outdoor branch joint the vertical axis shows the largest level difference between indoor unit and outdoor unit For level differences positive values indicate...

Page 130: ...nt of frosting which has occurred Corrected heating capacity values which take these factors into account can be calculated as follows using the correction factors for frost accumulation given in Tabl...

Page 131: ...rature o C DB Range for continuous operat i on Range for intermittent operat i on Indoor temperature o C DB 15 10 5 0 5 10 10 15 20 25 30 35 Outdoor temperature o C DB Range for continuous operat i on...

Page 132: ...62 16HP 65 18HP 65 20HP 66 22HP 66 24HP 67 26HP 68 28HP 68 30HP 68 32HP 68 Notes 1 Sound pressure level is measured at a position 1m in front of the unit and 1 3m above the floor in a semi anechoic ch...

Page 133: ...63 125 250 500 1000 2000 4000 8000 A B d l e v e l e r u s s e r p d n u o s d n a b e v a t c O Octave band center frequency Hz NC 65 NC 60 NC 55 NC 50 NC 45 NC 40 NC 35 NC 30 NC 25 NC 20 NC 15 0 10...

Page 134: ...2 Flat blade screwdriver 1 Adjusting indoor and outdoor unit dial switches 90 elbow 1 Connecting pipes Seal plug 8 Used in pipe flushing Connection pipe 3 Connecting pipes Matched resistor 2 Enhances...

Page 135: ...Unit Placement and Installation 136 3 Outdoor Unit Ducting and Shielding 139 4 Refrigerant Piping Design 145 5 Refrigerant Piping Installation 154 6 Drain Piping 165 7 Insulation 168 8 Charging Refri...

Page 136: ...for installers Notes for installers Notes for installers boxes contain important information which may primarily be of use during field installation rather than during desk based system design 1 2 De...

Page 137: ...ose as possible to the indoor units 2 1 2 Spacing Outdoor units must be spaced such that sufficient air may flow through each unit Sufficient airflow across heat exchangers is essential for outdoor un...

Page 138: ...r Figure 3 2 5 and Table 3 2 1 A drainage ditch should be provided to allow drainage of condensate that may form on the heat exchangers when the units are running in heating mode The drainage should e...

Page 139: ...nd maintenance should be allowed To ensure a good cooling heating effect short circuit ventilation where outlet air returns quickly to a unit s air inlet should be avoided To prevent excessive noise o...

Page 140: ...al section of ducting should be at least H h high Figure 3 3 1 Top of unit below top of adjacent wall h H h H 3 2 Design Considerations Outdoor unit ducting design should take account of the following...

Page 141: ...s mm ESP Pa Remarks A A 300 0 Factory default B B 250 0 20 Remove steel mesh and connect to duct 3m long C C 3000 20 Customization option D 731 D 770 E E A 731 15 3 3 2 Option B Longitudinal ducting F...

Page 142: ...rks A A 300 0 Factory default B B 250 0 20 Remove steel mesh and connect to duct 3m long C C 3000 20 Customization option D 770 D 800 E E A 770 15 3 3 4 Option B Longitudinal ducting Figure 3 3 5 Long...

Page 143: ...re Dimensions mm ESP Pa Remarks A A 300 0 Factory default B B 250 0 20 Remove steel mesh and connect to duct 3m long C C 3000 20 Customization option D 630 D 660 E E A 630 15 3 3 6 Option B Longitudin...

Page 144: ...sverse ducting for 24HP 26HP 28HP 30HP and 32HP units unit mm 1653 740 A C D B 90 100 E Table 3 3 13 Duct dimensions Table 3 3 14 External static pressure Dimensions mm ESP Pa Remarks A A 300 0 Factor...

Page 145: ...fan performance Figure 3 3 12 24 28HP units fan performance 0 5 10 15 20 9800 10000 10200 10400 10600 10800 11000 11200 Figure 3 3 10 14 18HP units fan performance Figure 3 3 13 30 32HP units fan per...

Page 146: ...side sides of the first indoor branch joint A in Figures 3 4 2 3 4 3 and 3 4 4 the system should as far as possible be equal in terms of number of units total capacities and total piping lengths 4 2 M...

Page 147: ...m b The difference in length between the piping from first indoor branch joint A to the farthest indoor unit N10 and the piping from the first indoor branch joint A to the nearest indoor unit N1 does...

Page 148: ...dexes L2 to L9 Indoor main pipes a to j Indoor auxiliary pipes A to I Indoor branch joints Table 3 4 3 Summary of permitted refrigerant piping lengths and level differences Permitted values Piping in...

Page 149: ...door main pipes a to j Indoor auxiliary pipes A to I Indoor branch joints Table 3 4 4 Main pipe1 L1 indoor main pipes L2 to L16 and indoor branch joint kits Total capacity indexes of indoor units Gas...

Page 150: ...312 38 1 22 2 KCMI 412 Notes 1 The main pipe L1 and first indoor branch joint A should be sized according to whichever of Tables 3 4 4 and 3 4 5 indicates the larger size Table 3 4 6 Indoor auxiliary...

Page 151: ...3 4 6 Indoor auxiliary pipes f KAYF i and j are 12 7 6 35 Step 2 Select indoor main pipes and indoor branch joints B to I The indoor units N1 and N2 downstream of indoor branch joint C have total cap...

Page 152: ...e even distribution of refrigerant branch joints should not be installed within 500mm of a 90 bend another branch joint or the straight section of piping leading to an indoor unit with the minimum 500...

Page 153: ...azon Unitario Top Discharge 152 Table 3 4 7 Indoor branch joint dimensions unit mm Model Gas side joints Liquid side joints KCMI 112 KCMI 212 KCMI 312 KCMI 412 108 ID 1 2 ID 5 8 ID 3 4 ID 7 8 ID 1 1 8...

Page 154: ...centration of refrigerant in a room following a leak can be calculated as follows Calculate the total amount in of refrigerant in the system A as the nameplate charge the charge in the system when del...

Page 155: ...have been connected but before the indoor units are connected 5 1 2 Three principles for refrigerant piping Reasons Measures CLEAN Particles such as oxide produced during brazing and or building dust...

Page 156: ...rs Lubrication oil used during some copper pipe manufacturing processes can cause deposits to form in R410A refrigerant systems causing system errors Oil free copper piping should therefore be selecte...

Page 157: ...d connection is required Notes for installers Before flaring 1 2H half hard piping anneal the end of the pipe to be flared Remember to place the flare nut on the piping before flaring Ensure the flare...

Page 158: ...on at the bend is greater than 2 3 of the original area Figure 3 5 3 Pipe bending in excess of 90 Wrinkles may appear 5 4 Refrigerant Piping Supports When the air conditioner is running the refrigeran...

Page 159: ...per piping at 0 02 0 03MPa during brazing Start the flow before brazing starts and ensure that the nitrogen continuously passes through the section being brazed until the brazing is complete and the c...

Page 160: ...ing overlap and gap for brazed joints A D B Legend A Inner diameter of larger pipe D Outer diameter of smaller pipe B Inlaid depth overlap Table 3 5 3 Piping overlap and gap for brazed joints1 D mm Mi...

Page 161: ...limitation is placed on how close branch joints may be installed to bends other branch joints and the straight sections of piping leading to indoor units Refer to Part 3 4 6 Branch Joints Figure 3 5 8...

Page 162: ...gs except for the opening at the indoor unit which is furthest from the outdoor unit Indoor unit A in Figure 3 5 9 5 Start to open the nitrogen cylinder valve and gradually increase the pressure to 0...

Page 163: ...least 3 minutes Observe the pressure gauge to check for small leakages If there is a small leakage the pressure gauge will drop distinctly If there are no small leakages charge the piping with nitrog...

Page 164: ...nto the piping until the pressure reaches 0 5MPa c Use a halogen refrigerant detector to find the leak d If the leak source cannot be found continuing charging with refrigerant to a pressure of 4MPa a...

Page 165: ...ssure side hose of a pressure gauge to the outdoor unit gas pipe stop valve the red high pressure side hose to the outdoor unit liquid pipe stop valve and the yellow hose to the vacuum pump Step 2 Sta...

Page 166: ...ntal drain pipes should not meet at the same level Refer to the Figure 3 6 2 for suitable connection arrangements Such arrangements also allow the slope of the two horizontal pipes to be selected inde...

Page 167: ...d or water being blown back into the drainage pan Traps should be arranged as in Figure 3 6 6 The vertical separation H should be in excess of 50mm A plug may be fitted to allow cleaning or inspection...

Page 168: ...scharged through the air vent or water flow may be impeded Figure 3 6 7 Downward sloping section of drain piping 6 5 Drain Piping Installation Notes for installers Installation of the drain piping sho...

Page 169: ...mperature of the refrigerant piping varies Insulation is required to ensure unit performance and compressor lifespan During cooling the gas pipe temperature can be very low Insulation prevents condens...

Page 170: ...successfully completed The procedure at each joint is as follows 1 Cut a section of insulation 50 to 100mm longer than the gap to be filled Ensure that the cross sectional and longitudinal openings ar...

Page 171: ...aution Only charge refrigerant after performing a gastightness test and vacuum drying Never charge more refrigerant than required as doing so can lead to liquid hammering Only use refrigerant R410A ch...

Page 172: ...l refrigerant can be charged close the three valves on the pressure gauge run the outdoor unit in cooling mode and then open the yellow and blue valves Continue charging until the full R kg of refrige...

Page 173: ...ed 9 2 Power Supply Wiring Power supply wiring design and installation should adhere to the following requirements Separate power supplies should be provided for the indoor units and outdoor unit Wher...

Page 174: ...n wiring Using other types of cable can lead to interference and malfunction Indoor communication wiring The P Q E communication wires should be connected one unit after another in a daisy chain from...

Page 175: ...er P Q E Connect between indoor units and master outdoor unit H1 H2 E Not available for Amazon Unitario Top Discharge Indi vidual series outdoor unit 9 4 Wiring example Figure 3 9 5 System power and c...

Page 176: ...direct exposure to the sea air should be avoided A canopy should be added to shield the units from sea air and rain as shown in Figure 3 10 2 Ensure that base structures drain well so that outdoor un...

Page 177: ...have been satisfactorily completed as per instructions 3 All condensate drain piping is complete and a watertightness test has been satisfactorily completed 4 All power and communication wiring is co...

Page 178: ...the system to ensure that the crankcase heaters have heated the compressor oil sufficiently 5 Run the system a Run the system in cooling mode with the following settings temperature 17 C fan speed hig...

Page 179: ...Book Amazon Unitario Top Discharge 178 12 Appendix to Part 3 System Commissioning Report A total of up to 5 report sheets should be completed for each system One Sheet A one Sheet B and one Sheet C pe...

Page 180: ...door ambient temp Commissioning engineer Outdoor unit information Model Serial no Power supply V OUTDOOR UNIT Compressor suction pipe temperature Current A System pressure at check port Within normal...

Page 181: ...on company Commissioning date Agent company Outdoor ambient temp Commissioning engineer Outdoor unit information Model Serial no Power supply V OUTDOOR UNIT Compressor suction pipe temperature Current...

Page 182: ...location System name RECORD OF ISSUES SEEN DURING COMMISSIONING No Description of observed issue Suspected cause Troubleshooting undertaken Serial no of relevant unit 1 2 3 OUTDOOR UNIT FINAL CHECKLIS...

Page 183: ...g refrigerant inlet T6A tempera ture C Actual value value displayed 15 Plate heat exchanger cooling refrigerant outlet T6B tem perature C Actual value value displayed 16 Inverter compressor A discharg...

Page 184: ...Part 3 System Design and Installation Amazon Unitario Top Discharge 183 Table continued on next page...

Page 185: ......

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