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15

I&O manual

5.6 Detail description for parts in fig. 5-4

1

2

3

4

5

6

Detail information

I1

Detection of current of the compressor A (protection code P4) 

I2

Detection of current of the compressor B (protection code P5)

7

8

No.

Table 5-2

10

Outdoor fan , controlled by T4

One compressor of the system 

 Electronic expansion valve of the system

signal communication port (fault code E2)

T4: outdoor ambient temperature sensor (fault code E7) 
T3 

pipe temperature sensor of the condenser  (fault code E5 and protection code P7) 

1)T4: if there is one system that requires starting outdoor fans, the fans are started through electric control of 
   the unit. Start outdoor fan A only, start A and B gears, and control the unit through T4. 
2)T3: when the electric control of the Modular unit detects the temperature of the outdoor  pipe T3 of the system 
    exceeds the protective temperature 65

 the corresponding system will be shut down. And it will be re-started

    up, after the temperature drops below the recovery temperature 60

. Another system will be not affected. 

3)T4, T3: when the temperature sensor is detected to suffer open circuit or short circuit, fault alarm will occur. When 
    the main unit suffer fault of temperature sensor: the main unit and subordinate units will be shut down.When the 
   subordinate unit suffer fault of temperature sensor: the unit will be shut down, but other subordinate units will not 
   be affected. 

Taf1: Shell and tube low-temperature ant-freeze sensor1 (fault code 1 Eb)
TZ/7: Total cooling temperature test port
TP2:Compressor exhaust temperature detecting port of the systemB
TP1:Compressor exhaust temperature detecting port of the systemA

Th:Compressor back gas temperature detecting port
 Taf2: Shell and tube low-temperature ant-freeze sensor 2 (fault code 2 Eb)
Two: Unit outlet water temperature sensor (fault code E4) 
Under refrigeration mode and heating mode, conduct adjustment according to the magnitude of unit outlet   water 
temperature.
Adjustment range of constant speed capability: ON and OFF.
Twi: Inlet water temperature sensor (fault code EF)
Tw: Total outlet water temperature sensor (fault code E3)
 Only the main unit is valid, and the subordinate units are invalid.
Under refrigerating mode and heating mode, conduct adjustment according to the magnitude of total outlet  
watertemperature. Adjustment range:  Load, stabilize, unload, Emergency Stop.

Low pressure sensor

   Module temperature test port
   Module temperature is higher than 82

 when shutdown protection PL

9

11

I1

Detection of current of the compressor A (protection code P4) 

I2

Detection of current of the compressor B (protection code P5)

Low voltage protection switch

12

13

high-pressure protection and discharge temperature switch protection (protection code P0)

Summary of Contents for SCV-xxEA

Page 1: ...AIR COOLED MODULAR CHILLER UNIT INSTALLATION AND USER MANUAL SCV xxEA AIR CONDITIONING...

Page 2: ...Original instructions...

Page 3: ...A Temperature testing components of total water outlet 1 1 1 1 Purpose Shape Qty Unit transformer Installation Operation Manual Use for installation only need for setting the main module Installation...

Page 4: ...2 SCV 600EA NO NAME 1 2 3 4 5 6 7 Air outlet Top cover Air inlet Electric control box Condenser Compressor Evaporator NO NAME 8 9 Water outlet Water intlet 1 2 8 7 9 4 6 3 5...

Page 5: ...matching and thus actually realizing optimal energy saving operation The product is Modularized unit and parallel connection of 16 modules can be realized at most so the user can adopt module combina...

Page 6: ...as unsorted municipal waste Collection of such waste separately for special treatment is necessary Keep far away from high frequency equipment Keep away from the following places a place where it is f...

Page 7: ...ticide Failure to observe could cause the chemicals to become deposited in the unit which could endanger the health of those who are hypersensitive to chemicals Do not place appliances which produce o...

Page 8: ...tend below frozen soil layer The foundation of the unit should not be connected to the foundation of the building to avoid affecting the people due to transfer of noise and vibration The base of the u...

Page 9: ...han the static pressure outside the fan The space between the unit and sunk fence or Persian blinds should also meet the requirement of the minimum installation space of the unit 3 3 1 3 If the unit n...

Page 10: ...n foundation of the unit unit mm 80 Cement mortar Concrete Drainage channel Fig 3 6 3 6 Installation of damping devices 3 6 1 Damping devices must be provided between the unit and its foundation By me...

Page 11: ...pes a All chilled water pipelines should be thoroughly flushed to be free of any impurity before the unit is operated Any impurity should not be flushed to or into the heat exchanger b Water must ente...

Page 12: ...eck valve Automatic discharge valve Symbol explanation Fig 4 1 Main unit Expansion tank Water replenishing Dirt discharge valve Differential pressure by pass valve Drain valve Two way valve Three way...

Page 13: ...tance pipe elbow and three way resistance two way resistance or three way resistance as well as filter resistance H4 the longest terminal resistance 4 7 2 Installation the pump a The pump should be in...

Page 14: ...ne must be consistent with the direction of arrow on the controller The connection terminal should be located where wiring connectioncan be easily done 4 9 4 Pay attention to the following items when...

Page 15: ...ngle module water system pipeline Fig 4 5 SCV 300EA Fig 4 6 SCV 600EA Water inlet Water outlet Total water outlet temperature sensor Electric control box Electric control box Water inlet Water outlet...

Page 16: ...items are determined The wired controller is 500m away from the outdoor unit 25 Q 50 50 Q 80 80 Q 130 135 Q 210 210 Q 325 325 Q 510 510 Q 740 740 Q 960 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200 4 11...

Page 17: ...electromagnetic interference thus leading to failure of the unit and its controller and even damages to them 5 3 10 All weak current wires led to the electric box must apply shielded wires which must...

Page 18: ...d N Step 7 Phase sequences must be consistent when the wires of the main power Step 8 The main power should be located out of easy reach of non professional maintenance personnel to avoid mal operatio...

Page 19: ...hen the subordinate unit suffer fault of temperature sensor the unit will be shut down but other subordinate units will not be affected Taf1 Shell and tube low temperature ant freeze sensor1 fault cod...

Page 20: ...l modules stop operating 3 In case of shutdown under the pump mode the pump can be directly shut down CN30 Input of three phase four wire power supply fault code E1 Three phases A B and C of power sup...

Page 21: ...for the main unit Spot check The operating status of outdoor system can be observed through spot check and specific display contents are as shown in the following figure Display contents of operating...

Page 22: ...ed in Table 7 1 6 2 Check item table after installation Checking item Description Yes No Whether installing site is meet for requirements Whether water system is meeting for requirements Whether elect...

Page 23: ...ler must be connected according to electric control schematic diagram or the faults caused by water breaking while the unit is in operation should be the user s responsibility Do not re start the unit...

Page 24: ...ons 1 Plug and play system 2 RS 485 TS232 Standard serial communication port Turn on the unit Press MENU key to set the intended mode Power up to module unit and initially deliver power to wired contr...

Page 25: ...ir suction pressure Check ambient temperature around it Discharge the excessive refrigerant Charge sufficient refrigerant to the system Check fan rotating direction Reason about remove air short circu...

Page 26: ...re Replace a new compressor Replace damaged assembly Control circuit without power though Check the wring of control system Hi voltage or lo voltage protection Reference to mention in above the parts...

Page 27: ...2 error Communication error between main control board and wired controller Power phase sequence error P1 P0 1E0 E1 E2 E3 E4 E5 E7 E8 E9 1Eb 1Ed 2Ed 1P6 2P6 EC EF EH EP EU 2E0 3E0 P4 P5 P9 Condenser h...

Page 28: ...ll be a dynamic display of If the system is under OFF state there is no display c If the communication with the main unit Modular unit is fail it displays E2 d If it is under the host computer network...

Page 29: ...d check suction and discharge pressure Maintenance of main parts Close attention should be paid to the discharge and suction pressure during the running process Find out reasons and eliminate the fail...

Page 30: ...el connect the HEAT COOL port of the main unit s electric control box then connect the ON OFF signal provide by user to the HEAT COOL port of main unit as follows 0 electric control box ON OFF port ON...

Page 31: ...temperature of chilled water or hot water Inlet Outlet 6 check air temperature of air side heat exchanger Inlet Outlet 7 Check refrigerant suction temperature and superheating temperature Refrigerant...

Page 32: ...Outdoor temperature Compressor Air temperature of air side heat exchanger Temperature of chilled water or hot water Current of cooling water pump or hot water pump Dry bulb Wet bulb Indoor temperatur...

Page 33: ...etc High or low pressure switch freeze proof device water flow volume controller Overcurrent device power phase sequence device etc Standard heating input kW Heating rated current Notes the above dat...

Page 34: ...to water heat pump Brine to water heat pump For low temperature heat pumps parameters shall be declared for low temperature application Otherwise parameters shall be declared for medium temperature a...

Page 35: ...Kingdom 1 For heat pump space heaters and heat pump combination heaters the rated heat output Prated is equal to the design load for heating Pdesignh and the rated heat output of a supplementary heat...

Page 36: ...iary heater and pump is just for reference please follow the instructions of corresponding auxiliary heater products Please choose such accessory as power wire switch of auxiliary heater according to...

Page 37: ...iliary heater and pump is just for reference please follow the instructions of corresponding auxiliary heater products Please choose such accessory as power wire switch of auxiliary heater according t...

Page 38: ...unit is containing fluorinated gases included in the Kyoto protocol The maintenance and the liquidation must be carried out by qualified personnel Type of refrigerant R410A The composition of the cool...

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