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INSTALLATION MANUAL - USER AND MAINTENANCE
Precision air-conditioners
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
50/60Hz range
EN
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
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Table of Contents
Related Manuals for CLIMAVENETA accurate ax
Summary of Contents for CLIMAVENETA accurate ax
- Page 1 INSTALLATION MANUAL - USER AND MAINTENANCE Precision air-conditioners ACCURATE Direct Expansion Air Cooled Direct Expansion Water Cooled Dual Fluid Air Cooled Dual Fluid Water Cooled Free Cooling Water Cooled 50/60Hz range frame 1: 05-07-10 frame 2: 15-18 frame 3: 20-26-29 frame 4: 39-30-40-50 frame 5:...
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Page 2: Table Of Contents
(whereas applicable). Contact Climaveneta Commercial Office for further drawings and schemes. Climaveneta declines any liability derived from the bulletin’s use. This bulletin is of exclusive property of Climaveneta, and all forms of copy are prohibited. The data contained herein are subject to variation without notice. -
Page 3: Documents
Option 4 VERSION MOD.B AW_AT Units with condensing pressure control by pressure control valve Units for low outside temp. (-45°C) with condensing pressure control by out- door unit fan speed control. ACCURATE AX - AW - AD - AT - AF... -
Page 4: General Characteristics
ELECTRICAL PANEL Built and wired in compliance with the IEC 204-1/EN60204-1 standards, complete with contactor and overload protection for the compressors and fans, disconnect switch with door interlock safety device. ACCURATE AX - AW - AD - AT - AF... - Page 5 Installation manual, and for ensuring the gas and oil charges, where necessary. AX - air cooled AW - water cooled ACCURATE AX - AW - AD - AT - AF...
- Page 6 The unit is fitted with a modulating 3-way valve to control the flow of cooling fluid to the indoor heat exchanger and maintain the desired conditions. AF - water cooled AD - air cooled ACCURATE AX - AW - AD - AT - AF...
- Page 7 Remember that the units are supplied without the system circu- lating pump. AT - water cooled ACCURATE AX - AW - AD - AT - AF...
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Page 8: Air Flows
AXU - AWU - ADU - ATU - AFU fig. 5 fig. 6 5 UNDER units with intake from the top and front outlet 6 UNDER units with intake from the top and outlet under plenum. the floor ACCURATE AX - AW - AD - AT - AF... -
Page 9: Rating Plate
5 - Average sound pressure level, at a distance of 2 m, for units in a free field on a reflecting surface. The average sound pressure level is calculated based on the sound power level measured in accordance with ISO 3744. ACCURATE AX - AW - AD - AT - AF... - Page 10 *WARNING,THE DIAMETERS OF THE CONNECTION LINES BETWEEN THE INDOOR UNIT AND DRY COOLER MUST BE SIZED BY THE INSTALLER BASED ON THE INSTRUCTIONS SHOWN IN THE PARAGRAPH ON WATER CONNECTIONS ACCURATE AX - AW - AD - AT - AF...
- Page 11 *WARNING,THE DIAMETERS OF THE CONNECTION LINES BETWEEN THE INDOOR UNIT AND DRY COOLER MUST BE SIZED BY THE INSTALLER BASED ON THE INSTRUCTIONS SHOWN IN THE PARAGRAPH ON WATER CONNECTIONS ACCURATE AX - AW - AD - AT - AF...
- Page 12 *WARNING,THE DIAMETERS OF THE CONNECTION LINES BETWEEN THE INDOOR UNIT AND DRY COOLER MUST BE SIZED BY THE INSTALLER BASED ON THE INSTRUCTIONS SHOWN IN THE PARAGRAPH ON WATER CONNECTIONS ACCURATE AX - AW - AD - AT - AF...
- Page 13 *WARNING,THE DIAMETERS OF THE CONNECTION LINES BETWEEN THE INDOOR UNIT AND DRY COOLER MUST BE SIZED BY THE INSTALLER BASED ON THE INSTRUCTIONS SHOWN IN THE PARAGRAPH ON WATER CONNECTIONS ACCURATE AX - AW - AD - AT - AF...
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Page 14: Hot Water Re-Heating
ON/OFF ON/OFF ON/OFF Heating Capacity (1) kW 4,4 10,1 10,1 16,2 14,3 16,2 16,2 22,6 22,6 22,6 26,3 26,3 (1) Operating conditions: Air 24°C/50% RH - Condensing temperature 45 °C ACCURATE AX - AW - AD - AT - AF... -
Page 15: Accessing The Main Components
This is for safety reasons, so as to not have to shut the unit down during normal maintenance operations. WARNING: before restarting the air-conditioner, always check that all the panels have been correctly replaced. ACCURATE AX - AW - AD - AT - AF... -
Page 16: Transport And Handling
If the side panels have been damaged during transport, they must be replaced before installing the unit. ACCURATE AX - AW - AD - AT - AF... -
Page 17: Dimensions And Weight
1015 1145 OVER Models Frame 1 OVER Models Frame 2 EC Radial fan EC Radial fan OVER Models Frame 3 OVER Models Frame 4 EC Radial fan EC Radial fan ACCURATE AX - AW - AD - AT - AF... - Page 18 OVER Models Frame 5 EC Radial fan OVER Models Frame 6 EC Radial fan ACCURATE AX - AW - AD - AT - AF...
- Page 19 UNDER Models Frame 1 UNDER Models Frame 2 UNDER Models Frame 3 UNDER Models Frame 4 ACCURATE AX - AW - AD - AT - AF...
- Page 20 UNDER Models Frame 5 UNDER Models Frame 6 ACCURATE AX - AW - AD - AT - AF...
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Page 21: Positioning The Air-Conditioner
Make sure that the air intake and outlet are never blocked, even partially. Models D mm >600 E mm L mm ACCURATE AX - AW - AD - AT - AF... -
Page 22: Operating Limits
450 mm. In this case too, the air-conditioner must be screwed to the base moulding during the positioning phase. unit moulding Models A1 mm 1000 1530 2080 2630 C1 mm ACCURATE AX - AW - AD - AT - AF... -
Page 23: Air Distribution (Under Units)
For ducting the air intake, plenums are available to be fitted between the top of the unit and the air return duct or the false- ceiling. Models L mm 1000 1000 1550 2100 2650 P mm H mm ACCURATE AX - AW - AD - AT - AF... -
Page 24: Motor-Driven Damper (Over/Under Units)
FRONT OUTLET BASE MOULDING (UNDER UNITS) The figuer shows the front outlet base moulding (optional for UNDER units) Models L mm 1000 1000 1550 2100 2650 P mm H mm ACCURATE AX - AW - AD - AT - AF... -
Page 25: Soundproof Suction Or Outlet Plenum
This accessory is not available on AF units. SECTION A-A FRONT VIEW TOP VIEW Models L mm 1000 1000 1550 2100 2650 P mm H mm ACCURATE AX - AW - AD - AT - AF... -
Page 26: Direct Free Cooling Base (Over Units)
Models L mm 1000 1000 1550 2100 2650 P mm H mm DIRECT FREE COOLING CONNECTION KIT (UNDER/OVER UNITS) Outside rain grill Pressure-relief damper Flange Clamp Hose Free cooling plenum ACCURATE AX - AW - AD - AT - AF... -
Page 27: Optional Fresh Air
The fresh air kit is supllied with G3 filter installed in suction side of fan, allowing to mix the fresh air with recirculating air. Connect a flexible pipe diameter 100mm (not supplied) as shown in the image below. The fresh air volume is around 5% of nominal air flow of unit. OVER UNDER ACCURATE AX - AW - AD - AT - AF... -
Page 28: Position And Diameter Of The Water Connections
IN water cooled AW OUT water cooled AW IN power supply IN humidifier water OUT humidifier water and condensate water drain IN hot water OHW OUT hot water PLAN VIEW FRONT OF UNIT ACCURATE AX - AW - AD - AT - AF... - Page 29 IN water cooled AW OUT water cooled AW-AT-AF IN water AF-AT IN power supply IN humidifier water OUT humidifier water IN hot water OHW OUT hot water PLAN VIEW FRONT OF UNIT ACCURATE AX - AW - AD - AT - AF...
- Page 30 OUT water cooled circ. 2 AW-AF-AT IN water AF-AT IN power supply IN humidifier water OUT humidifier water IN hot water OHW OUT hot water OUT condensate water drain PLAN VIEW FRONT OF UNIT ACCURATE AX - AW - AD - AT - AF...
- Page 31 OUT water cooled AW-AT-AF IN water AF-AT IN power supply IN humidifier water OUT humidifier water IN hot water OHW OUT hot water OUT condensate water drain PLAN VIEW FRONT OF UNIT ACCURATE AX - AW - AD - AT - AF...
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Page 32: Water Connections And Water Characteristics
For different values of incrostation factor multiplay all datas reported on cooling capacity tables for factors reported on following table. Incrostation factor °C/W) 4,4 x10-5 0,86x10-4 1,72x10-4 Incrostation factor 0,96 0,93 Compressor factor 0,99 0,98 Total power factor 0,99 0,98 ACCURATE AX - AW - AD - AT - AF... - Page 33 • consider a water speed limit inside the pipeline of 1-1,2m/s • cross the water flow value requested (in the example 5.000l/h) • extract the pressure drop value of pipe diameter selected (in example 35mm w.c./m) ACCURATE AX - AW - AD - AT - AF...
- Page 34 10.000 9.000 9.000 8.000 8.000 7.000 7.000 6.000 6.000 5.000 5.000 4.000 4.000 3 .0 00 2 .0 00 1.000 1.000 12 14 16 18 Linear Pressure Drops, (mm w.c./m) ACCURATE AX - AW - AD - AT - AF...
- Page 35 8.000 7.000 7.000 6.000 6.000 5.000 5.000 4.000 4.000 3 .0 00 .0 00 2 .0 00 .0 00 1.000 1.000 12 14 16 18 Linear Pressure Drops (mm w.c./m) ACCURATE AX - AW - AD - AT - AF...
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Page 36: Air Condenser: Suggested Installation
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) ACCURATE AX - AW - AD - AT - AF... -
Page 37: Refrigerant Connections (Ax)
0,50 0,25 0,75 2,10 1,90 0,53 0,26 0,80 2,20 2,00 0,55 0,27 0,85 2,40 2,10 0,60 0,30 0,95 2,70 2,40 0,70 0,35 1,10 3,20 2,80 0,80 0,45 1,30 4,00 3,30 ACCURATE AX - AW - AD - AT - AF... -
Page 38: Oil Separator
Oil separators must be always pre-charged before its use, as described on the table, with the same oil of the compressor. Frame Models Models OS10 OS30 OS40 OS30 OS40 OIL SEPARATOR Precharge 0,3 lt 0,3 lt 0,3 lt 0,3 lt 0,3 lt ACCURATE AX - AW - AD - AT - AF... -
Page 39: Volume
If available, also switch on the sump “broken” with nitrogen dioxide and then repeat the emptying heaters during the emptying operation.. operations as described. ACCURATE AX - AW - AD - AT - AF... -
Page 40: Condensate Drain
- Fasten the ends of the power cable 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'. ACCURATE AX - AW - AD - AT - AF... -
Page 41: Electrical Specifications
The above reported values don't include the external unit (if any). Since external unit with axial fans (BRE, BDC) is powered by the internal unit, absorption data of external unit must be added to the maximum loads listed above. For the outdoor unit, refer to its tech- nical manual. ACCURATE AX - AW - AD - AT - AF... - Page 42 The above reported values don't include the external unit (if any). Since external unit with axial fans (BRE, BDC) is powered by the internal unit, absorption data of external unit must be added to the maximum loads listed above. For the outdoor unit, refer to its tech- nical manual. ACCURATE AX - AW - AD - AT - AF...
- Page 43 23,8 380/3/60 380/3/60 14,1 27,9 380/3/60 380/3/60 15,9 31,6 380/3/60 380/3/60 17,55 Values for individual component FLI = Maximum power consumption FLA = Max current LRA = Locked rotor current ACCURATE AX - AW - AD - AT - AF...
- Page 44 1,96 460/3/60 460/3/60 460/3/60 1,96 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 Values for individual component FLI = Maximum power consumption FLA = Max current LRA = Locked rotor current ACCURATE AX - AW - AD - AT - AF...
- Page 45 230/3/60 1,85 230/3/60 230/3/60 230/3/60 1,85 230/3/60 230/3/60 230/3/60 1,85 230/3/60 230/3/60 230/3/60 230/3/60 230/3/60 230/3/60 230/3/60 Values for individual component FLI = Maximum power consumption FLA = Max current ACCURATE AX - AW - AD - AT - AF...
- Page 46 41,1 380/3/60 380/3/60 27,4 380/3/60 41,1 380/3/60 380/3/60 27,4 380/3/60 41,1 380/3/60 380/3/60 27,4 380/3/60 41,1 380/3/60 380/3/60 27,4 380/3/60 41,1 FLI = Maximum power consumption FLA = Max current ACCURATE AX - AW - AD - AT - AF...
- Page 47 3,75 460/3/60 460/3/60 3,75 460/3/60 460/3/60 3,75 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 460/3/60 Values for individual component FLI = Maximum power consumption FLA = Max current ACCURATE AX - AW - AD - AT - AF...
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Page 48: Electrical Connection Of The Outdoor Air-Cooled Condenser Bre And/Or The Outdoor Dry Cooler Bdc
(the connection cable is For the parameter setting of control condensation refer not supplied by the manufacturer). to the manual of the controller EVOLUTION+. ACCURATE AX - AW - AD - AT - AF... -
Page 49: Commissioning And Testing
(water-cooled models); Check that the sections of corrugated pipe with the function of drain trap (both inside and outside of the air-conditioner) have been filled with water during installation. ACCURATE AX - AW - AD - AT - AF... -
Page 50: Operation And Control
If the superheating is above the value indicated previously, open the valve further; if it is lower, close the valve further. NOTE: the thermostatic valve must only be calibrated by specialist personne ACCURATE AX - AW - AD - AT - AF... -
Page 51: Instruments And Alarms
- the negative pressure test point is located in a position for THE UNIT THE UNIT measuring the pressure upstream of the fan; Pressure test point Pressure test point RIGHT-HAND SIDE RIGHT-HAND SIDE ACCURATE AX - AW - AD - AT - AF... -
Page 52: Calibrating The Control And Safety Devices
Low pressure switch 3,0 bar (opening) 0,9 bar 3,9 bar (automatic) Safety thermostat (versions T and H) 320 °C (opening) Manual reset 41,5 bar 43 bar Safety valve 45 bar ACCURATE AX - AW - AD - AT - AF... -
Page 53: Calibrating The Pressure Control Valve
50-60% cove- red; - if the device is not activated, progressively reduce the calibra- tion of the pressure switch; - if the device is activated too early, increase the calibration. ACCURATE AX - AW - AD - AT - AF... -
Page 54: Temperature And Humidity Probe
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). ACCURATE AX - AW - AD - AT - AF... - Page 55 0 and 1. If a control signal from SSB... actuators cannot be repaired; the complete unit must be the controller is present, then this takes priority in determining replaced. the position. ACCURATE AX - AW - AD - AT - AF...
- Page 56 Calibration takes about 60 seconds. Repair The SSC... actuators cannot be repaired. They must be repla- ced as a complete unit. ACCURATE AX - AW - AD - AT - AF...
- Page 57 4. Measured values saved in microprocessor Normal operation 5. Actuator moves to the position as indicated by signal Y green LED is lit permanently A flashing red LED indicates a calibration error. ACCURATE AX - AW - AD - AT - AF...
- Page 58 2 WAY VALVE CLOSE-OFF FRAME AT/AD MODEL Actuator Valve model close off* (kPa) *close off = Maximum permissible differential pressure at which the motorised valve will close securely against the pressure ACCURATE AX - AW - AD - AT - AF...
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Page 59: Electric Heaters
Boiler cylinder (or steam cylinder). Water fill solenoid valve:YV1. Cylinder drain solenoid valve:YV2. Microprocessor control board:A1. 10 Temperature and humidity probe: BH1. 2. TA1 1. A3 9. B1 8. YV2 7. YV1 10. BH1 ACCURATE AX - AW - AD - AT - AF... - Page 60 - remove and clean the filter located inside the solenoid valve fit- ting; - dismantle the drain assembly (shown in Figure 13), clean the pipes and remove any flakes of scale from the cup-drain trap. ACCURATE AX - AW - AD - AT - AF...
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Page 61: Humidifier Power Supply
During installation, pour water into the condensate collection pan and the humidifier pan, so as to fill the drain traps outside and inside the unit with water. Downstream of the drain trap ensure a minimum slope of 1%. ACCURATE AX - AW - AD - AT - AF... -
Page 62: Std Condensate Drain Pump (Low Water Temperature)
BLACK LINE PUMP The pump requires a drain hose with an inside diameter of 6 mm MOTOR NEUTRAL PUMP START SWITCH EARTH or 9 mm. PUMP FRAME ACCURATE AX - AW - AD - AT - AF... - Page 63 Securely fasten the hoses with a clamp to the pump outlet fitting, to prevent them from coming loose and consequently causing water to be released at high pressure. IMPORTANT: The pre-wired safety switch must always be used. ACCURATE AX - AW - AD - AT - AF...
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Page 64: Double Power Supply With Automatic Switching
C: 50Hz D: 60Hz RESET SOFT = 2 s HYST HYST TEST MODE 1 MODE 2 HYST HYST MFT : 0 → 60 sec. MRT : 0 → 30 min. ACCURATE AX - AW - AD - AT - AF... -
Page 65: Maintenance
RECT DISMANTLING OF THE UNIT suitable local authority. The correct dismantling avoids any nega- ACCORDING TO CE 2002/96/CE tive enviromental consequences and allows significant benefits in terms of energy saving and resource. ACCURATE AX - AW - AD - AT - AF... -
Page 66: Troubleshooting
Check the operation of the hot gas three-way during the dehumidification plus post-heating valve; phase Check the operation of the compressor used for post-heating: in this case, see “THE COMPRESSOR/COMPRESSORS DON'T START”. ACCURATE AX - AW - AD - AT - AF... - Page 67 EC radial fan speed set too low Excessive pressure drop in the air distribution Check the sizing of the air distribution system system. (ducting, false-ceiling, underfloor plenum, grills) ACCURATE AX - AW - AD - AT - AF...
- Page 68 Check the calibration and the operation of the remote condenser fan pressure switch or the speed controller. (See CONTROLLING THE CONDENSING PRESSURE) The system is affected by an excessive See “HIGH COMPRESSOR DISCHARGE discharge pressure PRESSURE”. ACCURATE AX - AW - AD - AT - AF...
- Page 69 2°C. The system is affected by an excessively See “LOW COMPRESSOR DISCHARGE low discharge pressure PRESSURE”. ACCURATE AX - AW - AD - AT - AF...
- Page 70 Climaveneta Deutschland GmbH Lyrenstraße 13 44866 Bochum Germany Tel +49 2327-95428-0 Fax +49 2327-95428-99 info@climaveneta.de www.climaveneta.de Climaveneta España - Top Clima Londres 67, 1 4 08036 Barcelona Spain Tel +34 934 195 600 Fax +34 934 195 602 topclima@topclima.com www.climaveneta.com Climaveneta Chat Union Refrig.