BAH Geothermal heaterA geometric preheater has two functions:1. It acts as frost protection in the winter, heating up the outdoor air and protecting the unit againsticing up2. It can then be used to cool down outdoor air in the summer, supplying cooled air to the homeThe heater is set on the display under: Ventilation/frost-protection or de-icing111214141312121915171816T8Pdiff.1918T811. Condensation drain12. Shut-off valves13. Particle filter14. Filling and drain cocks15. Safety valve16. Bleed screw17. Expansion tank18. Pressostat19. Circulation pumpT8. Outdoor temperature sensorATTENTIONCirculation pump, heater and brine circuit are not supplied by Nilan.Compact P / Compact P Polar - GEO (English) BY NILAN33