LPHW Unit Heater FARMER OpenAir
The FARMER OpenAir unit heater has been developed for demanding industrial conditions, such as high humidity, acidic vapours, ammonia and dust. It performs excellently in agricultural facilities, including cowsheds, pig houses, stables and greenhouses. The unit operates with a heating medium and can optionally be supplied with cold water for air cooling. Thanks to its IP66 protection rating, it is resistant to dust and moisture.
About the product
FARMER OpenAir is an LPHW unit heater with the highest IP66 sealing class, designed for use in the most demanding agricultural environments — cowsheds, pigsties, stables and greenhouses — where there is high humidity, acid vapours, ammonia and dust. It operates on heating medium and can optionally be supplied with cold water for air cooling.
The AC induction motor with IP66 protection and sealed construction provide full protection against dust and high-pressure water jets. The copper-aluminium heat exchanger is protected by a GOLD epoxy coating resistant to acid vapours, moisture and aggressive substances. Heating capacity reaches 88.1 kW, cooling capacity up to 22.7 kW, and airflow ranges from 4,500 to 5,100 m³/h.
The housing made of gelcoat-coated laminated panels reinforced with an aluminium internal frame provides high mechanical stability, and the easy-opening frame facilitates periodic cleaning. The 360° diffuser in powder-coated galvanised steel — in standard or horizontal version — ensures even distribution of air throughout the room.
Key features
- Heating capacity from 7.5 kW to 88.1 kW
- Cooling capacity from 7.6 kW to 22.7 kW
- Heat exchanger with corrosion-resistant epoxy coating
- Airflow: from 4,500 m³/h to 5,100 m³/h
- AC induction motor with IP66 protection class
- Gelcoat-coated laminate housing reinforced with aluminium frame
- 360° diffuser in powder-coated galvanised steel (standard or horizontal version)
- Made in Poland
Do you have any questions?
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Models and parameters
| FARMER OPENAIR IP66 | FARMER OPENAIR XL IP66 | |
|---|---|---|
| Product code | WHHCFO-2042 | WHFOXL-2445 |
| Unit output [kW*] | 54,3 | 63,9 |
| Heating capacity range [kW**] | 7,5 - 71,6 | 9,9 - 88,1 |
| Maximum airflow [m³/h] | 5100 | 4500 |
| Maximum air reach [m] | 25 | 23 |
| Number of heat exchanger rows [pcs] | 3 | 4 |
| Water capacity [dm³] | 3,8 | 4,9 |
| Maksymalna temperatura czynnika grzewczego [°C] | 120 | 120 |
| Max. working pressure of heating medium [MPa] | 1,6 | 1,6 |
| Connection pipe diameter [in] | 3/4 | 3/4 |
| Voltage/Frequency [V/Hz] | 230/50 | 230/50 |
| Rated current [A] | 2,2 | 2,2 |
| Obroty silnika [obr/min.] | 1395 | 1395 |
| Motor power [W] | 500 | 500 |
| IP protection rating | 66 | 66 |
| Waga netto [kg] | 46 | 49 |
| Noise level [dB***] | 66 | 66 |
* – przy parametrach wody 90/70°C oraz temperaturze wlotowej powietrza 0°C
** – moc maksymalna 120/90°C, 0°C na wlocie// moc minimalna 40/30°C, 20°C na wlocie
*** — measured at 5 m distance
FAQ
Yes. It simply needs to be supplied with chilled water. Cooling efficiency depends on the supply water temperature and the air inlet temperature. Due to the possibility of condensate forming, a drip tray must be used. Cooling operation is only possible when the unit heater is wall-mounted — when ceiling-mounted, the condensate would not be caught by the drip tray.
Yes, it can. Depending on requirements, a confusor (extends jet reach) or a 360° diffuser (shortens jet reach but gives better mixing with surrounding air) can additionally be fitted to the outlet.
Yes, our unit heaters are compatible with heat pumps.
No. Unit heaters can be supplied with water or glycol solution at appropriate pressure. Excessively low water pressure can negatively affect unit heater heating capacity.
Check the electrical installation connection and make sure the unit heater is connected to the supply in accordance with the wiring diagrams provided.
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