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Alfa Laval
ZLA - Industrial air cooler FeZn

ZLA - Industrial air cooler FeZn

Product catalog summary

General Information & Application
The Helpman ZLA series offers a versatile range of heavy-duty industrial air coolers suitable for cooling and freezing applications in medium to large cold rooms, with a focus on meat products. The evaporating temperature ranges from +5 to -40 °C, and it supports refrigerants like ammonia (R-717) and brine. Capacities range from 4 to 125 kW, with air volumes between 4,000 and 63,000 m3/h. Higher capacities are available upon request.

Standard Configuration

Finned coil with 7 coil block modules, available in 4, 6, or 8 tube rows deep, using steel tubing and fins.
Fans range from Ø 508 mm to Ø 800 mm, with enclosed design spray-tight fan motors (IP55 protection).
Corrosion-resistant casing made from Aluminium/Sendzimir.
Hinged drip tray with vertical drain(s) and suitable for various refrigerant systems.
Refrigerant connections are on the right-hand side, with stickers indicating fan direction and refrigerant flow.

Testing
Design pressure is 27 bar, with higher pressures available on request. Each heat exchanger is leak tested with dry air and supplied with a nitrogen pre-charge. Brine coolers are tested at 6 bar.

Options

Hot gas coil in drip tray, horizontal drip tray drains, enclosed side panels, and dry expansion execution.
Various drip tray insulation options, with specific compatibility for electric defrost.
Mounting feet for floor installation and isolating switch options.
Special fan motors for extra external pressure and variable speed.
Built-in heater coil sections and stainless steel casing options.

Air Cooler Selection & Dimensions
Selection and pricing are performed using the “HelpmanSelect” Air Heat Exchanger selection software, which provides technical data and dimensional drawings. Contact the sales organization for full technical documentation.

Benefits

Application-based design ensures product quality.
Advanced selection software and heavy-duty materials for long product life.
Wide and versatile range with reliable performance and easy installation.
Energy-efficient with low defrost frequency and low total cost of ownership.
Two-year product guarantee.

Code Description
The code includes options for current, circuiting design, fin spacing, tube rows, number of fans, and cooler module. Alfa Laval reserves the right to change specifications without prior notification.

Catalog excerpts

General information & application The Helpman ZLA series is a wide and flexible range of heavy-duty industrial air coolers for both cooling and freezing applications in medium to large cold rooms. Suitable for a wide range of applications, with a special focus on meat products. Evaporating temp. +5 to -40 °C Refrigerants ammonia (R-717), brine Capacities (SC2) 4 up to 125 kW* Air volume 4,000 up to 63,000 m3/h. * Higher capacities on request Standard configuration • Finned coil - 7 coil block modules - 4, 6 or 8 tube rows deep - Steel tubing ø 22 mm - Tube pitch 60 x 60 mm square - Steel fins - Fin spacings 6, 8, 10 and 12 mm - Coil galvanised acc. NEN-ISO 1461 • 1-4 Fans, drawing through the coil, available in a range of different executions. Diameters Ø 508 mm up to Ø 800 mm. Enclosed design spray-tight fan motors, protection class IP55. Motors are equipped with a thermal safety device in the windings, connected to separate terminals in the box. • Corrosion resistant casing material: Aluminium/Sendzimir. • Hinged driptray with vertical drain(s) 1 ¼” BSP male. • Suitable for ammonia refrigerant, pumped system, DX or gravity flow. • Refrigerant connections on right hand side (fan side view). • Stickers indicate fan direction and refrigerant in/out. • Delivery in mounting position. Coolers are mounted on wooden beams. Installation can take place with use of a forklift. Test Design pressure 27 bar, higher design pressures on request. Each heat exchanger is leak tested with dry air and finally supplied with a nitrogen pre-charge. Brine coolers are tested at 6 bar. ZLA Industrial air cooler FeZn ZLA

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How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com ERC00171EN 0802 Options • Hot gas coil in driptray (G) • Horizontal drip tray drain(s) (H) • Enclosed side panels (Z) • Dry expansion execution (DX) • Fan ring heater (FRH) • Driptray insulation - Armaflex (or alike) 10 mm ( I 1) - Styropore 10 mm + cladding ( I 2) - Foamglass 25 mm + cladding ( I 3) - Purane + polyesther cladding ( I 4) I1, I2 & I4 driptray insulation not in combination with electric defrost. Foamglass (I3) possible for use with electric...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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