Pfannenberg PWS 6502 230V Air/Water Heat Exchanger 5 kW

PWS 6502 230V air/water heat exchanger, 5,000 W high capacity

The PWS 6502 230V is the high-capacity model of the Pfannenberg Ecool PWx 6000 series, rated 5,000 W at a water flow of 400 l/h. It is a tall side-mount unit of 1,556 mm height for large drive and switchgear cabinets. Seven Star LLC supplies the PWS 6502 230V in Oman and the GCC as an independent supplier in Muscat.

The code reads PWS for side mount, 6502 for the 5 kW class model and 230V for the single-phase supply, with article number 12883501055. Other supply versions of the same model exist for 115 V and 400 V. In the series it is the largest side-mount model.

PWS 6502 230V technical specifications

Water flow and the 5,000 W rating of the PWS 6502 230V

The capacity is quoted for 400 l/h, twice the flow of the small models. The water must absorb 5 kW; at 400 l/h that corresponds to a temperature rise of roughly 10.7 K between inlet and outlet, using the specific heat of water. Make sure the supply loop can deliver this flow and that the supply line is large enough, because a restricted flow reduces capacity directly.

At 209 to 292 W of electrical consumption, the exchanger removes about 17 to 24 times its own power, which is attractive for cabinets with large drives that dissipate several kilowatts.

Handling the 36.5 kg PWS 6502 230V

At 36.5 kg and 1,556 mm in height, the unit needs two people or a lifting aid. The cabinet wall must be strong enough, and the load of hoses and water adds to the weight. Check the cabinet manufacturer for the allowed side-panel load, and reinforce if necessary.

Fit in the system and related parts

Use the PWS 6502 for large cabinets and pair with smaller PWS or PWI units for other cabinets on the same loop. If the water supply is unavailable, large cooling units such as the DTS 6X2E from the same manufacturer offer an alternative. The PWI 6302C or PWS 6302 fills the gap between 1.5 kW and 5 kW.

PWS 6502 230V selection and ordering checklist

• Cabinet heat load up to 5,000 W under site conditions
• Available water flow of 400 l/h and the water temperature
• Pressure up to 10 bar
• Cabinet wall strength for 36.5 kg
• Space of 1,556 x 485 mm
• 230 V supply with 2 A gG
• Hose and valve arrangement

Installing and maintaining the PWS 6502 230V

Lift the unit with care and fix it according to the mounting template. Connect hoses of suitable size, install shut-off valves, a strainer and an air vent, and commission the water circuit before powering the fan.

Annual maintenance covers cleaning of the coil, a check of the hoses and clamps, and flushing of the water side if scale builds up. Check condensate drainage regularly in humid periods.

Typical PWS 6502 230V applications in Oman and the GCC

Desalination, power, oil and gas and petrochemical plants in Oman and the GCC usually have a chilled water or cooling water loop available, and the electrical rooms are dusty, hot and sometimes corrosive. The 5 kW exchanger is suitable for large variable-frequency drive cabinets, switchgear lineups with high losses, and control rooms in containers next to a chilled water plant.

PWS 6502 supply options

For large cabinets, internal air distribution decides whether the rated capacity is actually felt by the components. Place the exchanger so that its cold air outlet blows toward the heat sources, and keep cable bundles and mounting plates from blocking the return air path. Temperature sensors at the top of the cabinet, where hot air collects, give a better picture than a single sensor at the exchanger. If the load changes seasonally, record the cabinet temperature at several points during commissioning and again in the hottest month to see if the margin remains sufficient.

Information to send with an RFQ for the PWS 6502 230V

• Part number PWS 6502 230V and quantity
• Heat load and water data
• Cabinet details
• Supply voltage
• Delivery destination
• Required date

Site conditions in Oman for the PWS 6502 230V

Panel cooling in Oman is sized for the worst case, not the average day. Summer shade temperatures in Muscat, Sohar and the interior regularly pass 45 °C, and a cabinet standing in direct sun gains further heat through its walls. When you size the PWS 6502 230V, add the internal losses of drives, power supplies and PLCs to the solar and wall gain, and compare the total with the useful cooling capacity at your real ambient and target cabinet temperature, rather than with a nominal figure stated at milder test conditions.

Coastal sites near Duqm, Salalah or Sur also bring humidity and salt-laden dust. Keep door seals intact, route the condensate drain away from live parts, and plan routine filter and coil cleaning so that the PWS 6502 230V keeps its rated performance through the long summer season.

Documents and quotation

A product sheet for the series that includes the PWS 6502 230V is attached on this page; it carries the data tables, dimensions and the article numbers for the other variants of the size.

Seven Star LLC is an independent supplier in Muscat and is not an official channel of the manufacturer. Send the quantity, delivery location and project reference with your request and we will reply with availability, lead time and a formal quotation.