[. . . ] Do make sure the mains electricity supply is switched off before attempting to make electrical connections or carry out any maintenance or cleaning. Customers outside UK - see international below. UK: The fan is guaranteed against defects for 3 years from date of purchase. [. . . ] Our engineers are there to help during normal office hours (UK only) and may be faxed at all other times on +44 (0) 8709 000530. Customers outside the UK please contact your local Xpelair distributor, details of which are available from the UK office. As far as possible from and opposite to the main source of air replacement to ensure airflow across the room (eg, opposite an internal doorway). If installing in a room containing a fuel burning device, it is the installer's responsibility to ensure that there is enough replacement air to prevent fumes being drawn down the flue when the fan is operating up to maximum extract. Exhaust air must not be discharged into a flue used for exhausting fumes from appliances supplied with energy other than electric. Requirements of all authorities concerned must be observed for exhaust air discharge. When installed for use in possible chemical corrosive atmospheres, consult our Technical Service Department. The inlet grilles should be situated at least 0. 5m distance from the discharge outlet of a flued heating or cooking appliance. Position of the fan The fan can be mounted to a suitably strong wall or roof member. Position of the air outlet A means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules. [. . . ] The fan has 3 speed settings: High(H), Medium (M) and Low (L). CONNECT TO OBTAIN REQUIRED SPEED Link to obtain speeds as follows L = Low Speed L - M = Medium Speed L - H = High Speed GREEN/YELLOW 1. Apart from cleaning, no other maintenance is required. N FUSE N P P P T1 T2 T3 SWITCH TERMINALS BLUE L DOUBLE POLE ISOLATING SWITCH L M H BROWN CABLE FROM XVENT UNIT BLACK BLACK/WHITE XVENT 275 WIRED THROUGH THE THREE SPEED SWITCH REF. 91457AW [. . . ]