Large viewing window with deceptively realistic fireplace with photoelectric play of flames. Pleasant atmosphere due to detailed reproduction of wood logs. Version with acoustics: Genuine wood fire crackling provides a real fireplace feeling. Gas heating and fireplace can be operated independently of each other. The wood fire crackling in the version with acoustics can be switched on or off as desired. Installation on the Trumatic S 5002 is quick and easy (for heaters prior to year 03/04, the inner installation box must also be replaced). Installation possible from year 05/1998). The Ultraheat electric booster heater and all Trumavent blowers can be retrofitted just as easily.