nilan Comfort 252 TOP Installation Instructions Manual

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nilan Comfort 252 TOP Installation Instructions Manual Manual pdf 15 page image

External electrical preheating elementIf the unit is the non-Polar version, an external preheating element can be purchased for retro-fitting.The electric preheating element is mounted in the outdoor air duct before the unit with the necessarytemperature sensor.1x230V ~ 50 Hz max. 16A7 8Min. 32 cmTIt is important that the sensor is placed at least 32 cm from the preheating element to achieve correctregulation.The preheating element is fitted with a three-step safety system to preventoverheating.1. A thermostat regulates heat and ensures that the supply air temperature doesnot go below -1 °C2. A max. thermostat switches off the preheating element if the temperatureexceeds 50 °C3. A manual safety thermostat can be used to switch off the preheating elementif the temperature exceeds 100 °CATTENTIONWhen mounting the electric preheating element, there must be a safety gap of minimum 15 cmfrom any flammable material. The heating element must be insulated with a fire retardantinsulation material, but the cover on the connection box must not be insulated.Dimensional drawing:Ø160 Positioning options:Comfort 252 / 302 Top (English) BY NILAN15