What are JULABO FL Chillers with heaters?
JULABO offers 22 different standard FL recirculating chiller models. The units’ range in cooling power from 300W to 20kW in air and water-cooled versions. All models incorporate RS232 communication and alarm output ports. The standard FL chillers do not incorporate an integrated heater and have an upper set point limit of +40 °C with a fluid return upper limit of +80 °C.
Many applications that do not require sophisticated I/O, user interfaces or ±0.01 °C stability require chillers with a broader temperature range and higher upper temperature limit. To meet these requirements several FL chillers can be equipped with integrated heaters and higher temperature limits.
FL Chiller Nomenclature
Before we review the integrated heater options, let us explain the FL product name nomenclature.
Cooling capacity: the root number in the product name signifies the cooling capacity in Watts at 20 °C. If the name includes a W, that indicates a water-cooled unit.
FL1201 → root number of 1200= 1200W cooling power
FL2503 → root number of 2500 = 2500W cooling power
FLW7006 → root number of 7000 = 7400W* cooling power
And so on.
*Some water-cooled systems have higher cooling capacity than the analogous air-cooled models.
The last digit indicates the centrifugal pump pressure capability. FL models with integrated heaters have product names ending in 1, 3 or 6. This designates the pump power in bar: 1 bar | 14.5 PSI; 3 bar | 43.5 PSI; 6 bar | 87 PSI. Units with a 3 or 6 bar pump incorporate an integrated manual by-pass valve and an analog pressure gauge on the front of the unit.
FL Chillers with Integrated Heater
Small FL Chillers
| Model | Heater Power (kW) | Upper limit (°C) | Electrical |
| FL1201 | 1.3 | +80 | 208-230V/60Hz |
| FL1701 | 1.3 | +80 | 208-230V/60Hz |
| FL1203 | 1.3 | +80 | 208-230V/60Hz |
| FL1703 | 1.3 | +80 | 208-230V/60Hz |
Mid-Size FL Chillers
| Model | Heater Power (kW) | Upper limit (°C) | Electrical |
| FL(W)2503 | 3 or 6 | +80 or +95 | 208-230V/3PPE/60Hz |
| FL(W)4003 | 3 or 6 | +80 or +95 | 208-230V/3PPE/60Hz |
| FL(W)2506 | 3 or 6 | +80 or +95 | 208-230V/3PPE/60Hz |
| FL(W)4006 | 3 or 6 | +80 or +95 | 208-230V/3PPE/60Hz |
Large FL Chillers
| Model | Heater Power (kW) | Upper limit (°C) | Electrical |
| FL(W)7006 | 6, 9 or 12 | +80 or +95 | 208-230V/3PPE/60Hz |
| FL(W)11006 | 6, 9 or 12 | +80 or +95 | 208-230V/3PPE/60Hz |
| FL(W)20006 | 6 or 9 | +80 or +95 | 208-230V/3PPE/60Hz |
Conclusion & Next Steps
JULABO offers a wide range of FL chillers with integrated heating capability. The heater and upper limit options greatly expand the application scope of the FL product line. Contact us for help finding the appropriate FL chiller. You can also discuss your cooling application and any issues you may be having directly with our team. Mark Diener, our senior product manager, and application scientist, holds weekly office hours to answer your questions. Contact Mark for any questions you may have about your cooling application.
