CLIMAVENETA Accurate AD Installation - User - Maintenance Manual Download Page 52

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CALIBRATING THE CONTROL AND SAFETY DEVICES

ACCURATE AX - AW - AD - AT - AF

After starting the air-conditioner, make the following adjustments:
- Room temperature (cooling and heating set point).
- Relative humidity (set point for humidification and dehumidifi-

cation);

- Dirty filter differential pressure switch: see the paragraph on

"CALIBRATING THE DIRTY FILTER SENSOR".

The calibration values of the control and safety devices must not
be altered.

Symbol

Description

Models

Activation

Differential

Reset

High pressure switch

37,4 bar (opening)

Manual reset

38,7 bar (opening)

10
15
18
20
30
40
26

40,5 bar (opening)

29
39
50
55
60
70
80
90

Low pressure switch

All

3,0 bar (opening)

0,9 bar

3,9 bar (automatic)

TH1

Safety thermostat (versions T and H)

All

320 °C (opening)

Manual reset

Safety valve

41,5 bar

43 bar

45 bar

Summary of Contents for Accurate AD

Page 1: ...rs ACCURATE AX Direct Expansion Air Cooled AW Direct Expansion Water Cooled AD Dual Fluid Air Cooled AT Dual Fluid Water Cooled AF Free Cooling Water Cooled frame 1 05 07 10 frame 2 15 18 frame 3 20 26 29 frame 4 39 30 40 50 frame 5 55 60 70 frame 6 80 90 50 60Hz range ...

Page 2: ... Commissioning and testing 49 Operation and control 50 Instruments and alarms 51 Calibrating the control and safety devices 52 Calibrating the pressure control valve 53 Calibrating the air flow sensor 53 Calibrating the dirty filter sensor 53 Temperature and humidity probe 54 Servomotor and hot water valve 54 Electric heaters 59 Humidifier 59 Humidifier power supply 61 Humidifier and condensate dr...

Page 3: ...S AX Direct expansion air cooled AW Direct expansion water cooled AD Dual Fluid air cooled AT Dual Fluid water cooled AF Free Cooling water cooled Option 2 AIR FLOW O Over Flow U Under Flow Option 3 CAPACITY 07 7 kw 10 10 kw 15 15 kw 18 18 kw 20 20 kw 26 26 kw 29 29 kw 30 30 kw 39 39 kw 40 40 kw 50 50 kw 55 55 kw 60 60 kw 70 70 kw 80 80kw 90 90kw Option 4 VERSION BASIC Units without condensing pre...

Page 4: ...efficiency according to CEN EN 779 with average removal efficiency of 90 1 ASHRAE G4 The filter is fire resistant AIR HEAT EXCHANGER Finned coil with large front surface made from copper tubes expanded mechanically onto aluminium fins with a high heat exchange area Hydrophilic treatment to assist the drainage of condensate ELECTRICAL PANEL Built and wired in compliance with the IEC 204 1 EN60204 1...

Page 5: ...al treat ments on the coils For the corresponding information refer to the manual on out door air cooled condensers Note 1 the outdoor units and condensers are supplied separately Note 2 the indoor unit is delivered charged with nitrogen at near atmospheric pressure The outdoor condenser on the other hand is supplied pressurised with dry air around 3 bar Note 3 the customer is considered responsib...

Page 6: ...eries units feature two different cooling systems which cannot be active at the same time One primary chilled water system CW provided by a chiller installed on site and a secondary direct expansion system DX which also acts as backup The activation set points of these two circuits can be seen in the user terminal manual The unit AT and AD are supplied as standard with EC radial fans in the standa...

Page 7: ...lied with a pressure control valve for managing the condensing pressure The units generally work in closed circuits with outdoor dry coolers cooled by the outside air To avoid ice formation it s recommended to always use a glycol mixture as the fluid inside the closed circuit in the percentages described in this manual according to the average minimum tem perature reached in the installation site ...

Page 8: ...ms at the front fig 1 fig 2 fig 3 fig 4 f 1 OVER units with intake from the front and outlet plenum 2 OVER units with intake from the front and outlet from the top 3 OVER units with intake from under the floor and outlet from the top 4 OVER units with intake from the rear and outlet from the top 5 UNDER units with intake from the top and front outlet plenum 6 UNDER units with intake from the top a...

Page 9: ...total capacity 1 kW n a 7 73 10 03 17 06 19 95 23 95 27 79 31 93 42 9 34 94 47 49 50 07 58 68 36 76 75 91 93 97 27 Gross sensible capacity 1 kW n a 7 73 9 41 17 06 18 54 23 89 27 79 29 96 42 9 34 94 47 49 48 9 58 68 36 71 58 91 71 92 58 SHR 1 n a 1 00 0 94 1 00 0 93 1 00 1 00 0 94 1 00 1 00 1 00 0 98 1 00 1 00 0 93 1 00 0 95 Compressor power consumption kW n a 1 87 2 37 3 99 4 41 5 18 5 91 7 21 8 ...

Page 10: ...71 60 54 71 23 80 89 96 57 103 23 Gross sensible capacity 1 kW n a n a n a 17 36 18 61 24 2 2782 29 98 44 43 35 6 49 23 49 17 60 54 69 33 72 53 93 73 95 04 SHR 1 n a n a n a 0 98 0 91 0 96 98 44 0 90 0 99 0 98 0 98 0 93 1 00 0 97 0 90 0 97 0 92 Compressor power consumption kW n a n a n a 3 56 4 11 4 63 5 32 6 65 7 60 7 03 9 21 10 55 10 71 13 21 14 93 17 30 19 53 Power cons with std EC radial fans ...

Page 11: ...fans kW 0 89 1 69 1 69 3 51 2 09 3 51 3 51 5 11 5 11 6 72 6 72 Power supply V Ph Hz 380 3 60 CAPACITY DELIVERED DX Gross total capacity 1 kW 25 8 29 5 32 4 49 0 39 8 51 7 52 7 70 7 80 1 95 3 103 0 Gross sensible capacity 1 kW 23 2 27 8 30 1 48 1 37 6 48 8 50 0 67 0 72 5 87 7 90 4 SHR 0 90 0 94 0 93 0 98 0 94 0 95 0 95 0 95 0 91 0 92 0 88 Compressor power consumption kW 4 77 5 37 6 53 8 76 7 12 9 3...

Page 12: ...2 27 3 30 3 44 4 37 3 48 0 49 8 62 7 72 7 85 4 88 9 SHR 0 90 0 96 0 92 1 00 0 97 0 97 0 94 1 00 0 92 0 96 0 89 Compressor power consumption kW 5 29 5 94 7 16 8 54 7 97 10 57 11 52 12 74 16 69 19 81 22 11 Power cons with std EC radial fans kW 1 35 1 80 1 80 3 20 1 30 3 20 3 20 4 50 4 50 6 10 6 10 Power cons with HP EC radial fans kW 0 89 1 69 1 69 3 51 2 09 3 51 3 51 5 11 5 11 6 72 6 72 Power suppl...

Page 13: ...ity 1 kW 25 8 29 5 32 4 49 0 39 8 51 7 52 7 70 7 80 1 95 3 103 0 Gross sensible capacity 1 kW 23 2 27 8 30 1 48 1 37 6 48 8 50 0 67 0 72 5 87 7 90 4 SHR 0 90 0 94 0 93 0 98 0 94 0 95 0 95 0 95 0 91 0 92 0 88 Compressor power consumption kW 4 8 5 4 6 5 8 8 7 1 9 3 10 4 13 1 14 7 17 7 19 8 Power cons with std EC radial fans kW 1 35 1 80 1 80 3 20 1 30 3 20 3 20 4 50 4 50 6 10 6 10 Power cons with HP...

Page 14: ... 3570 Total pressure drops 4 kPa 10 15 15 30 30 16 19 19 46 36 46 46 40 40 40 27 27 Heating Capacity 6 kW 4 2 5 1 5 1 9 9 9 9 7 0 7 9 7 9 14 1 12 3 14 1 14 1 19 3 19 3 19 3 20 5 20 5 Water Flow 6 l h 714 890 890 1730 1730 1220 1370 1370 2460 2150 2460 2460 3350 3350 3350 3560 3560 Total pressure drops 6 kPa 10 15 15 29 29 15 19 19 47 37 47 47 39 39 39 28 28 Water connectionsi inch 1 2 1 2 1 2 1 2 ...

Page 15: ...intenance The number of front panels depends on the capacity of the air conditioner SIDE PANELS All the side panels are accessible and removable Nonetheless these do not need to be removed for routine main tenance operations This means that if necessary a series of units can be installed next to each other The side panels are fastened by screws These are accessible directly on the side panel by re...

Page 16: ... indicates the centre of gravity of the packaged unit KEEP AWAY FROM HEAT indicates that the packaged unit must be kept away from sources of heat THIS SIDE UP indicates the correct position of the packaged unit TEMPERATURE LIMITS indicates the temperature limits for storing and handling the packaged unit USE NO HOOKS indicates that hooks cannot be used to handle or lift the packaged unit DO NOT ST...

Page 17: ... 774 794 993 1023 AT MOD_A kg 348 399 417 468 556 551 576 811 831 991 1061 AT MOD_B kg 346 398 414 463 555 448 574 809 825 980 1050 AF kg 362 413 433 489 577 580 605 846 871 993 1123 Frame 1 2 3 4 5 6 Mod 05 07 10 15 18 20 26 29 30 39 40 50 55 60 70 80 90 AX kg 141 141 156 229 241 304 355 373 408 496 491 514 684 724 744 898 928 AW MOD_A kg 147 147 167 242 254 320 371 391 431 519 522 545 716 761 78...

Page 18: ...18 EN ACCURATE AX AW AD AT AF OVER Models Frame 5 OVER Models Frame 6 EC Radial fan EC Radial fan ...

Page 19: ...EN ACCURATE AX AW AD AT AF 19 UNDER Models Frame 1 UNDER Models Frame 2 UNDER Models Frame 3 UNDER Models Frame 4 ...

Page 20: ...20 EN ACCURATE AX AW AD AT AF UNDER Models Frame 5 UNDER Models Frame 6 ...

Page 21: ...els of the raised floor and the frame which must also be insu lated from the metallic structure of the floor NOTE the frame must be fitted by the installer following the instructions shown inside the packaging LOUVER KIT optional accessory The louver is recommended to be used on UNDER units to devi ate the air flow and allow better distribution L1 P1 X X 200 600 mm Raised floor Elastic gasket Elas...

Page 22: ...ned for the connections to pass through the base of the unit nonetheless if there is no raised floor units with intake from the rear or front to simplify the connection of the pipes and cables a base moulding must be used The base moulding available as an accessory is epoxy polyester powder painted in the same colour as the external panels on the air conditioner measures 200 mm in height and is fi...

Page 23: ... of which must be proportional to the layout of the thermal load of the environment For units with air outlet from the bottom the recommended air outlet speed from the raised floor is between 1 and 2 5 m s con sequently the cross section of the grills should be sized based on this value The total outflow area sum of the areas of the openings and net space of the grills required for each model must...

Page 24: ...20 90 H mm 150 150 FRONT OUTLET PLENUM OVER UNITS FRONT OUTLET BASE MOULDING UNDER UNITS The figure shows the front outlet plenum optional for OVER units L H P The figuer shows the front outlet base moulding optional for UNDER units L1 H P1 Models 05 07 10 15 18 20 26 29 39 30 40 50 55 60 70 80 90 L mm 600 1000 1000 1550 2100 2650 P mm 500 500 790 790 790 790 H mm 350 500 Models 05 07 10 15 18 20 ...

Page 25: ...e the quantity of air taken in from the outside to ensure the room temperature set point is maintained This accessory is not available on AF units WARNING For correct installation an elastic gasket should be fitted between the plenum and the unit A PRESSURE RELIEF DAMPER supplied with the FC CONNEC TION KIT MUST BE USED SO THAT THE AIR CAN DE DIS CHARGED DURING TOTAL FREE COOLING OPERATION L P H F...

Page 26: ... room temperature set point is maintained This accessory is not available on AF units WARNING For correct installation an elastic gasket should be fitted between the plenum and the unit A PRESSURE RELIEF DAMPER supplied with the FC CONNEC TION KIT MUST BE USED SO THAT THE AIR CAN DE DIS CHARGED DURING TOTAL FREE COOLING OPERATION INSTALLATION EXAMPLE UNDER OVER with free cooling plenum with free c...

Page 27: ...e is around 5 of nominal air flow of unit Frame 1 0 50 100 150 200 250 1000 1500 2000 2500 3000 3500 m h Pa G4 F5 F6 F7 F8 Frame 2 0 50 100 150 200 250 3500 4000 4500 5000 5500 6000 6500 m h Pa Frame 3 0 50 100 150 200 250 3500 4500 5500 6500 7500 8500 9500 m h Pa Frame 4 0 50 100 150 200 250 7500 8500 9500 10500 11500 12500 13500 14500 m h Pa Frame 5 0 50 100 150 200 250 9000 11000 13000 15000 17...

Page 28: ...r OHW OUT hot water UNDER CONNECTIONS AX AW size 05 07 10 IR IN refrigerant AX OR OUT refrigerant AX IW IN water cooled AW OW OUT water cooled AW IP IN power supply IH IN humidifier water OH OUT humidifier water IHW IN hot water OHW OUT hot water OVER CONNECTIONS AX AW size 15 18 IR IN refrigerant AX OR OUT refrigerant AX IW IN water cooled AW OW OUT water cooled AW IP IN power supply IH IN humidi...

Page 29: ...UT refrigerant AX AD IW IN water cooled AW OW OUT water cooled AW AT AF IWF IN water AF AT IP IN power supply IH IN humidifier water OH OUT humidifier water IHW IN hot water OHW OUT hot water OC OUT condensate water drain UNDER CONNECTIONS AX AW AD AT AF size 20 26 29 IR IN refrigerant AX AD OR OUT refrigerant AX AD IW IN water cooled AW OW OUT water cooled AW AT AF IWF IN water AF AT IP IN power ...

Page 30: ...circ 2 AX AD OR2 OUT refrigerant circ 2 AX AD IW1 IN water cooled circ 1 AW OW1 OUT water cooled circ 1 AW AF AT IW2 IN water cooled circ 2 AW OW2 OUT water cooled circ 2 AW AF AT IWF IN water AF AT IP IN power supply IH IN humidifier water OH OUT humidifier water IHW IN hot water OHW OUT hot water OVER CONNECTIONS AX AW AD AT AF size 55 60 70 IR1 IN refrigerant circ 1 AX AD OR1 OUT refrigerant ci...

Page 31: ...circ 1 AX AD OR1 OUT refrigerant circ 1 AX AD IR2 IN refrigerant circ 2 AX AD OR2 OUT refrigerant circ 2 AX AD IW IN water cooled AW OW OUT water cooled AW AT AF IWF IN water AF AT IP IN power supply IH IN humidifier water OH OUT humidifier water IHW IN hot water OHW OUT hot water UNDER CONNECTIONS AX AW AD AT AF size 80 90 IR1 IN refrigerant circ 1 AX AD OR1 OUT refrigerant circ 1 AX AD IR2 IN re...

Page 32: ...eline refer to Pressure Drops on stain less steel pipes Make sure that the water contained in the water circuit meets the following requirements throughout the entire life of the system where 1 1 78 D 1 Fr con 1 Fr 10 gr CaCO3 m3 ppm parts per million ppb parts per billion Explanations ref 1 a hydrogen ion concentration pH greater than 9 implies a high risk of fouling while a pH less than 7 implie...

Page 33: ... 000 200 000 300 000 400 000 500 000 10 9 8 7 6 5 4 3 2 1 100 90 80 70 60 50 40 30 500 400 300 200 6 000 Water flow l h 12 14 16 18 20 12 14 16 18 5 0 6 s m 8 0 s m 1 2 s m 1 4 s m 1 6 s m 1 8 s m 0 2 s m 2 5 s m 0 3 s m 3 s m 0 4 s m s m 0 1 2 Ø 2 1 1 Ø 4 1 1 Ø 1 Ø 4 3 Ø 2 1 Ø 8 3 Ø 5 Ø 4 Ø 3 Ø 2 1 2 Ø 6 Ø 5 Ø 4 Ø 3 Ø 2 1 2 Ø 2 Ø 2 1 1 Ø 4 1 1 Ø 1 Ø 4 3 Ø 2 0 s m 4 0 s m 6 0 s m 8 0 s m Pressure ...

Page 34: ... 000 2 000 3 000 4 000 5 000 6 000 7 000 8 000 9 000 100 000 20 000 30 000 40 000 50 000 60 000 70 000 80 000 90 000 200 000 300 000 400 000 500 000 10 9 8 7 6 5 4 3 2 1 100 90 80 70 60 50 40 30 500 400 300 200 6 000 Water Flow l h 12 14 16 18 20 12 14 16 18 5 8 0 s m 1 2 s m 1 4 s m 1 6 s m 1 8 s m 0 2 s m 2 5 s m 0 3 s m 3 s m 0 4 s m 2 0 s m 4 0 s m 6 0 s m 8 0 s m s m 0 1 0 6 s m 6 Ø 5 Ø 4 Ø 3...

Page 35: ... 000 2 000 3 000 4 000 5 000 6 000 7 000 8 000 9 000 100 000 20 000 30 000 40 000 50 000 60 000 70 000 80 000 90 000 200 000 300 000 400 000 500 000 10 9 8 7 6 5 4 3 2 1 100 90 80 70 60 50 40 30 500 400 300 200 6 000 Water Flow l h 12 14 16 18 20 12 14 16 18 8 0 s m 1 2 s m 1 4 s m 1 6 s m 1 8 s m 0 2 s m 2 5 s m 0 3 s m 3 5 s m 0 4 s m 2 0 s m 4 0 s m 6 0 s m 8 0 s m s m 0 1 0 6 s m 6 Ø 5 Ø 4 Ø 3...

Page 36: ...conditioner max 15 metres max 3 metres max 3 metres heat insulation air conditioner N B Create traps as shown in the figure making sure to fill them with oil when commissioning the system Fit a non return valve at the unit outlet on the gas outlet pipe The liquid piping must be protected against sunlight Install an oil separator for pipe lenght above 50m see the OIL SEPARATOR paragraph ...

Page 37: ...g the lines must be sized so as to guarantee a minimum refrigerant speed of around 7 m sec at all times above all when using variable capacity compressors Check and make sure that the internal heat load to be dissipated is never less than 30 35 of the capacity of air conditioning installed Special care must be paid to the insulation of the hot gas pipes under the raised floor RECOMMENDED OUTSIDE D...

Page 38: ...ed in the discharge line between the compressor and the condenser mounted securely in a vertical position and reasonably close to the compressor Oil separator performs best when operating at or near the compressor discharge temperature In location the oil separator choose a posi tion to avoid as far as possible chilling of the shell which may result in condensing of liquid within the separator If ...

Page 39: ...ng the emptying operation VOLUME REFRIGERANT CHARGING PROCEDURE N B Important when gas is added lubrication oil must also be added in a ratio of 10 weight of the refrigerant gas aded INDOOR COILVOLUME AND REFRIGERANT CHARGE Models Indicative gas content R410A kg AX 5 1 5 AX 7 1 6 AX 10 1 8 AX 15 2 9 AX 18 3 5 AX AD 20 3 9 AX AD 26 4 8 AX AD 29 5 4 AX AD 39 5 5 AX AD 30 3 45 x 2 AX AD 40 4 2 x 2 AX...

Page 40: ...e to the terminals on the main switch inside the electrical panel fully tighten the screws Connect the yellow green earth wire to the special terminal marked PE ACCESSTOTHE BOARD To access the board open the front panel and the thermoformed cover on the electrical panel The electronic components are sensitive to discharges of static electricity from the human body Touch an earthed object before ha...

Page 41: ...34 8 54 3 154 34 8 54 3 154 40 8 61 8 162 40 8 61 8 162 6 90 460 3 60 37 7 66 3 185 37 7 66 3 185 43 7 73 8 193 43 7 73 8 193 Vers B R H T Frame Mod V ph Hz FLI kW FLA A SA A FLI kW FLA A SA A FLI kW FLA A SA A FLI kW FLA A SA A 1 05 230 1 50 2 5 11 0 38 6 5 28 4 38 4 7 20 8 47 8 6 5 28 4 47 8 1 07 230 1 50 3 4 15 4 63 7 4 32 8 63 5 6 25 2 72 8 7 4 32 8 72 8 1 10 230 1 50 4 3 10 1 100 8 3 37 5 100...

Page 42: ...3 43 79 4 185 Vers B R H T Frame Mod V ph Hz FLI kW FLA A SA A FLI kW FLA A SA A FLI kW FLA A SA A FLI kW FLA A SA A 1 05 230 3 60 1 07 230 3 60 3 8 12 1 61 8 22 7 61 6 05 17 7 66 8 22 7 66 1 10 230 3 60 4 7 15 6 76 8 9 26 2 76 6 95 21 2 81 8 9 26 2 81 2 15 230 3 60 7 2 22 6 113 15 3 43 0 113 10 95 32 0 122 15 3 43 0 122 2 18 230 3 60 7 5 29 6 139 15 6 50 0 139 11 25 39 0 148 15 6 50 0 148 3 20 23...

Page 43: ... 1 07 460 3 60 460 3 60 1 3 33 5 5 27 1 10 460 3 60 460 3 60 1 4 15 6 35 2 15 460 3 60 460 3 60 1 7 05 10 62 2 18 460 3 60 460 3 60 1 7 01 11 8 62 3 20 460 3 60 460 3 60 1 8 71 15 75 3 26 460 3 60 460 3 60 1 9 91 15 100 3 29 460 3 60 460 3 60 1 12 1 21 114 4 39 460 3 60 460 3 60 1 14 05 22 125 4 30 460 3 60 460 3 60 2 7 05 10 62 4 40 460 3 60 460 3 60 2 8 71 15 75 4 50 460 3 60 460 3 60 2 9 91 15 ...

Page 44: ...Mod V ph Hz V ph Hz Qty FLI kW FLA A V ph Hz Qty FLI kW FLA A 1 05 1 07 460 3 60 230 1 60 1 0 48 2 230 1 60 1 0 5 3 15 1 10 460 3 60 230 1 60 1 0 48 2 230 1 60 1 0 5 3 15 2 15 460 3 60 230 1 60 2 0 48 2 230 1 60 2 0 5 3 15 2 18 460 3 60 230 1 60 2 0 48 2 230 1 60 2 0 5 3 15 3 20 460 3 60 460 3 60 1 1 96 3 1 460 3 60 1 2 7 4 3 3 26 460 3 60 460 3 60 1 1 96 3 1 460 3 60 1 2 7 4 3 3 29 460 3 60 460 3...

Page 45: ...70 380 3 60 380 3 60 3 1 96 3 1 380 3 60 3 2 7 4 3 6 80 380 3 60 380 3 60 3 2 7 4 3 380 3 60 4 2 7 4 3 6 90 380 3 60 380 3 60 3 2 7 4 3 380 3 60 4 2 7 4 3 Vers Unit power supply Std EC radial fan HP EC radial fan Frame Mod V ph Hz V ph Hz Qty FLI kW FLA A V ph Hz Qty FLI kW FLA A 1 05 1 07 230 3 60 230 1 60 1 0 48 2 230 1 60 1 0 5 3 15 1 10 230 3 60 230 1 60 1 0 48 2 230 1 60 1 0 5 3 15 2 15 230 3...

Page 46: ... 60 460 3 60 2 8 1 10 2 460 3 60 3 12 15 1 2 18 460 3 60 460 3 60 2 8 1 10 2 460 3 60 3 12 15 1 3 20 460 3 60 460 3 60 3 9 11 3 460 3 60 5 15 18 9 3 26 460 3 60 460 3 60 3 9 11 3 460 3 60 5 15 18 9 3 29 460 3 60 460 3 60 3 9 11 3 460 3 60 5 15 18 9 4 39 460 3 60 460 3 60 5 15 18 9 460 3 60 6 18 22 6 4 30 460 3 60 460 3 60 5 15 18 9 460 3 60 6 18 22 6 4 40 460 3 60 460 3 60 5 15 18 9 460 3 60 6 18 ...

Page 47: ...d V ph Hz V ph Hz Qty FLI kW FLA A kg h 1 05 230 1 50 230 1 50 1 2 25 9 8 3 1 07 230 1 50 230 1 50 1 2 25 9 8 3 1 10 230 1 50 230 1 50 1 2 25 9 8 3 2 07 400 3N 50 400 3 50 1 2 25 3 2 3 2 10 400 3N 50 400 3 50 1 2 25 3 2 3 2 15 400 3N 50 400 3 50 1 3 75 5 5 5 2 18 400 3N 50 400 3 50 1 3 75 5 5 5 3 20 400 3N 50 400 3 50 1 3 75 5 5 5 3 26 400 3N 50 400 3 50 1 3 75 5 5 5 3 29 400 3N 50 400 3 50 1 3 75...

Page 48: ...d as standard on the versions of the indoor units for low outside temperatures 45 C For the parameter setting of control condensation refer to the manual of the controller EVOLUTION Values for individual component FLI Maximum power consumption FLA Max current Vers Unit power supply Humidifier modulating Frame Mod V ph Hz V ph Hz Qty FLI kW FLA A kg h 1 05 1 07 380 3 60 380 3 60 1 2 11 3 4 2 8 1 10...

Page 49: ...t 12 hours before starting so as to suitably heat the oil in the com pressors During extended shutdown there may be spontaneous migration of refrigerant to the compressor sump which at the start may cause the oil to foam and consequent damage due to insufficient lubrication As a result do not disconnect power during weekly pauses Open the on off valves in the refrigerant circuits and check that th...

Page 50: ...er in this case the supply pressure must not be less than 200 kPa 2 bar IMPORTANT for systems in which the water is cooled using a cooling tower make sure suitable filters are used to prevent the plate condensers from fouling quite quickly Remember that the units are supplied without the sys tem circulating pump Water in a closed circuit The condensers on the units are supplied with water pumped i...

Page 51: ...witch switches with automatic reset one on each refrigerant circuit Air flow sensor and dirty filter sensor differential pressure switches Temperature sensor or room temperature and humid ity sensor on the units with humidity control Outlet air limit temperature sensor Safety valve Some versions in addition have the following sensors Safety thermostat in the versions with electric heaters with the...

Page 52: ...ING THE DIRTY FILTER SENSOR The calibration values of the control and safety devices must not be altered Symbol Description Models Activation Differential Reset F1 High pressure switch 5 37 4 bar opening Manual reset 7 38 7 bar opening 10 15 18 20 30 40 26 40 5 bar opening 29 39 50 55 60 70 80 90 F2 Low pressure switch All 3 0 bar opening 0 9 bar 3 9 bar automatic TH1 Safety thermostat versions T ...

Page 53: ...ed to terminals 1 2 and 3 To install the new pressure switch perform the same operations in the reverse order inserting the cables from point C A mbar B B 1 3 2 mbar D C D E Pressure switch F4 must be calibrated according to the pressure drop which depends not only on the filter being dirty but also on the air flow rate The calibration must be performed with a clean filter as follows switch the un...

Page 54: ...lled by checking the posi tion using the indicator located on the top of the servomotor EMERGENCY MANUAL OPERATION The valve can be operated manually in the event of faults to the servomotor or the control system using the manual control knob not supplied The figure shows the optional temperature and humidity probe If having to replace the probe release the white plastic cover by pressing point A ...

Page 55: ... A AB When power supply is removed the actuator maintains its cur rent position Operation A 3 mm hexagonal socket wrench can be used to move the actuator to any position between 0 and 1 If a control signal from the controller is present then this takes priority in determining the position Manual override Maintenance The actuators are maintenance free When carrying out service work on the plant fol...

Page 56: ...ent of the control signal In this process the actuator drives the valve to the mechanical end stops and stores the associated positions per manently in the form of electronic values The positioning signal is only active on completion of this calibration process Calibration takes about 60 seconds Manual override The rotary knob can be used to drive the actuator into any position between 0 and 1 How...

Page 57: ...rolled via terminal Y The recorded positioning signals control the synchronous motor by means of microprocessor electronics Signal Y increasing actuator stem extends valve opens Signal Y decreasing actuator stem retracts valve closes Signal Y constant actuator stem remains in the respective position SQX82 SQX62 1 Terminal strip 2 Button S3 calibration 3 LED red green operating status indication 4 ...

Page 58: ...F Indication of operating state SQX62 2 WAYVALVE CLOSE OFF For applications where the 2 way valve is needed verify the Close Off value in table below if they are suitable with the system For different value make specific request close off Maximum permissible differential pressure at which the motorised valve will close securely against the pressure 2 WAYVALVE CLOSE OFF FRAME AT AD MODEL Actuator V...

Page 59: ...rs disconnect power to the air conditioner and wait until the heating elements have cooled down After having replaced the heaters make sure the earth is connected SYSTEM COMPONENTS Upon request the air conditioning unit can be fitted with an immersed electrode humidifier versions D and H 1 Humidifier interface board A3 inside the electrical panel 2 Current transformer TA1 inside the electrical pan...

Page 60: ...lakes that deposit on the filter at the base of the cylinder To remove the cylinder proceed as follows completely drain the water from the boiler to do this see the paragraph MANUAL CONTROL in the EVOLUZIONE con troller instruction manual disconnect the power supply by opening the main switch on the electrical panel remove from the top of the cylinder the hose that carries the steam to the distrib...

Page 61: ...duction unit is an attachment for draining the water This is already fitted with a hose coupling for connecting the hose running to the sewerage system in the building A rubber or plastic hose should be used resistant to 100 C with an inside diameter of 32 mm Fit a trap in the section of the hose outside of the unit to avoid bad odours and to prevent water from overflowing from the humidifier pan ...

Page 62: ...self shuts down Maintenance guide At least once every 6 months pour a bactericidal solution into the tank to prevent accumulation of residues and sludge at the bottom These substances may cause the float to malfunction or block the non return valve that the drained water flows through NB Users must check that any chemicals contained in the con densate are compatible with operation of the pump Do n...

Page 63: ...using water to be released at high pressure IMPORTANT The pre wired safety switch must always be used Maintenance guide At least once every 6 months pour a bactericidal solution into the tank to prevent accumulation of residues and sludge at the bottom that may cause the pump to malfunction NB Users must check that any chemicals contained in the con densate are compatible with operation of the pum...

Page 64: ...ESET SOFT AUT Un Un P P 208 240 Vac Un P N 120 138 Vac U 5 20 F 3 10 U F U F HYST HYST Un P P 380 420 Vac Un P N 220 240 Vac HYST HYST HYST 20 U F Un U 5 20 F 3 10 U F U F HYST 20 U F 230 127 Vac MODEL 400 230 Vac MODEL C 50 Hz D 60 Hz E F 2 s MRT HYST HYST The motorised changeover switches automatically manage changeover under load between two single phase or three phase power supplies or manuall...

Page 65: ... the condition of the heat exchanger during the poplar pollination period or the autumn falling leaves Remove any objects accumulated on the coil and wash with a jet of water These operations must be carried out with the unit off and after having made sure that the appliance is disconnected from the power supply Checking the water cooled condensers for fouling To check the water cooled condensers ...

Page 66: ...ler The probe isn t working Check the thermal load in the room being air conditioned Thermal load higher than expected See THE COMPRESSOR COMPRESSORS DON T START The compressor compressors don t start despite being activated by the controller ROOMTEMPERATURE TOO HIGH See the controller manual The parameter settings on the microprocessor controller are not correct Check that the heater thermal cuto...

Page 67: ...k the pressure of the supply water Check the operation of the manual control system and the steam production unit see the control panel manual The humidifier isn t working See the control panel manual check the operation of the panel and or the probe The control system isn t working AMBIENT HUMIDITY TOO LOW Check the power supply to the fans The fans are not powered Clean the filter using a vacuum...

Page 68: ... exceed the design value B Insufficient air flow rate to the remote heat exchanger or air too hot Check the flow rate the pressure and the temperature of the cooling water in the clo sed circuit Check the calibration and the operation of the pressure control valve Insufficient water flow rate to the condenser or water too hot Remove refrigerant from the circuit Excessive refrigerant charge condens...

Page 69: ...at the valve sen sor bulb is not discharged and that it is cor rectly positioned secured and insulated a Return of liquid refrigerant to the compressor intake HIGH COMPRESSOR SUCTION PRESSURE See ROOM TEMPERATURE TOO LOW Room temperature too low See LOW OR NO AIR FLOW The air flow rate is too low or null Check the opening of the valve Liquid receiver outlet valve not completely open Check that the...

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