Vextra 1103 UI 910 Dry Cooler Owner’s Manual

Vextra 1103 UI 910 Dry Cooler

Saving of required space & Acoustic comfort

The technology, the production and inspection methods ensure that all aspects of the VEXTRA are reliable (performances, mechanical longevity, corrosion resistance).

Description

• coil with copper tubes, high performance aluminium fins, resistant to fouling,
• in standard, galvanized steel sheet, prelacquered light grey RAL 7035 and graphite grey RAL 7024, and Z275 galvanized steel cross supports – 30/10 mm thick,
• DACROMET coated steel nuts and bolts,
• fan-motor assemblies
  • profiled shell,
  • grille according to NFE 51190 (tab1),
  • motor: choice of 7 rotation speeds,
  • electrical connection in motor terminal box, directly accessible,
• fan-motors partitioning per stage.

Many possible options to meet your specific needs :

• prelacquered aluminium or copper fins, steel or stainless steel tubes,
• anti-corrosion treatment of fin bundle for hostile environments : BLYGOLD or equivalent,
• fan-motors partitioning per 2,
• protective or control panels,
• voltage or frequency converter,
• maintenance switches, electrical connection of motors on front panel,
• fins protection grille,
• personalized paint on casing, 1 or 2 sides.

Systematic test in factory: Hydraulically tested with glycol water solution

• Unit according to the European Directives provisions, by way of incorporation regulation:
  • Machines 89/392/EEC, article 4, paragraph 2
  • EMC 89/336/EEC, article 10.2
  • Low voltage 73/23/EEC

THERMAL PERFORMANCES FOR 1 UNIT

• Thermal capacity: 811 kW
• Exchange area: 1.547 m2
• Fluid: MEG 30%
• Inlet/outlet temperature: 45 / 40 °C
• Flow in inlet: 0,04179 m3/s
• Pressure drop: 71 kPa

Ambient air

• Altitude: 0 m
• Temperature: 30 °C

SOUND LEVEL FOR 1 UNIT (for X units, add 10logX)

• Sound pressure level: 68 dBA at 10 meters from unit, at 1m50 above ground, in free field, directivity 2, tolerance +/- 3 dB.
• Acoustics sound pressure levels depend of installation design and they are given like indicative values. We remind that you have to compare acoustic sound power levels, only certified and reliable values.

Sound power spectrum (ISO 3744):

DIMENSIONS

DIMENSIONS AND WEIGHT FOR 1 UNIT

• Dimensions without options
  • Empty weight, included options: 2.310 kg

CHARACTERISTICS PER UNIT

• Casing: Prelacquered galvanized steel sheets – Light grey RAL 7035 and graphite grey RAL 7024
• Frame: RAL 7024 prelacquered galvanized steel – 2275 galvanized steel cross support – 30/10 mm thick

2 Identical exchange bundles:

• Data for 1 exchange bundle:
• • Tubes: Copper
    • Fins: Aluminium
    • 2 Passe(s)
    • Content: 166 dmª
    • PED 97/23/EC: Article 3.3
    • 3 Rows – fin space: 2,1 mm
    • Inlet piping : Smooth steel OD 114,3 (DN100-4″)
    • Outlet piping : Smooth steel OD 114,3 (DN100-4″)
    • Max allowable Press./Temp.: 15 bar g. / 110 °C

10 Fan motor assemblies

• rotation speed : 910 rpm
• Impeller with Polypropylene blades
• Motor: Standard 2 Speeds – Electrical connection to motor terminal box
  • Class F – IP55 – 400V / 3ph 50Hz
  • 910/770 гр – 3400/2350 W – 8,50/4,60 А
• Standard fan-motors partitioning: distribution 2-4-4

For another control staging, fan-motors partitioning per 2 available in option – To be imperatively specified on order.

OPTIONS AND ACCESSORIES PER UNIT

• BLYGOLD POLUAL coating on finned bundle (x1)
• Control panel (x1)
  • IP55 box with main circuit isolator, motors contactors and circuit breakers, 3 ph. 400 V + N power supply with three-steps electronic thermostat and 70° max. sensor, according to RT6062
• Maintenance switch for panel (x3)
  • lockable – 1 per stage
• Steel flange NP16 ND100 type 01A (x4)
  • As per EN 1092-1 – Welded

INSTALLATION PRECAUTIONS

• The installer must take all necessary precautions to avoid recycling of hot air, which would reduce the performance.

NOTE(S)

• Applicability (Press. Equipts Dir.): Air Conditionning, Refrigeration, Heat Pumps.

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>