5 Boiler Installation

5.1 Boiler Preparation

With the boiler still in the bottom tray, slide the controls coverupward and remove it as shown in diagram 5.1.Remove the front cover by undoing the wing nut, nut andwasher, lift the front cover off, see diagram 5.1.Place front cover on one side until required.Fit suitable compression fittings to the required tappings on theboiler.Note. For gravity domestic hot water use 22x28mm connectionson the stubs, see diagram 5.2. 4115a 4133

5.2 Mounting the Boiler

As necessary, fit the blanking plate, see diagram 5.5.Now make sure that the top, swing brackets are UPRIGHT.Lift the boiler into position, hooking over the mounting bracket.Swing the brackets over the two screws at the top. Hold theswing bracket(s) in place whilst tightening the screw(s) onto it, see diagram 5.3.Remove the blue and red electrical connections from the fan,see diagram 5.4.Break the air pressure switch tube connections, see diagram5.4.Remove the fan assembly by removing the screws at the front,slackening the screws at the rear and sliding it out, see diagram 5.4.Secure the flue assembly to the boiler using the previously fitteddogpoint screws noting that these are keyhole fixings, see diagram 5.5.Make sure of the correct fitting of the flue to the boiler.For a side outlet cut the fan duct extension to the lengthrequired, see diagram 5.6.Remove any burrs and fit as diagram 5.6. Fit the fan duct extension to the elbow and assemble to the fanas shown in diagram 5.6.Do not secure at this point with the screw.Position the fan assembly and engage the fan duct extensionover the flue manifold. Make sure, by pushing the flue duct extension that a secure seal is made.Mark the final position of the fan duct extension through thescrew hole on the elbow, remove the assembly and secure with the screw as diagram 5.6.Secure the elbow to the fan outlet with the Jubilee clip. For rear outlet cut and fit the fan duct extension, as diagram 5.6.Secure with the Jubilee clip.Fit fan assembly by engaging the fan duct extension over theflue manifold spigot, see diagram 5.7.Secure the fan assembly with the screws previously slackenedand removed.Reconnect the blue and red electrical connections to the fan,the polarity of the connections is not important.Reconnect the air pressure switch tubes as shown in diagram5.4. FRONT COVER SECURINGNUT SHAKEPROOF WASHER Diagram 5.1 CONTROLSCOVER WINGNUT
22mm HEATINGRETURN22x28 GRAVITYDOMESTICCONNECTION 22mm GRAVITYDOMESTIC HOT WATER STUB 22mm HEATINGFLOW NOTE: When cutting leave sufficient length for fittings Diagram 5.2
221656D 18