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British Gas 40 - 80 RD2 -

Installation & Servicing

INSTALLATION

7 BOILER ASSEMBLY - Exploded View

With casing removed.

Fan sensor

Tie rod

Mex 1304

Data badge

Return sensor

Overheat sensor

Flow

sensor

14.

Fan assembly.

16.

Front plate assy.

18.

Burner manifold.

28.

Gas cock.

38.

Pressure switch.

41.

Air inlet duct.

42.

Turret access cover assy.

46.

Boiler base plate.

49.

Flue baffle.

65.

Control box.

92.

Thermostat bush.

LEGEND

Heat exchanger assembly.

Front section.

Centre section.

Section alignment rings and 'O' rings.

Back section.

Flow thermistor sensor pocket.

6A.

Return thermistor sensor pocket.

6B.

O/heat thermostat sensor pocket.

Distributor tube.

Combustion chamber.

12.

Collector hood.

INST

ALLA

TION

Содержание British Gas RD2

Страница 1: ...INSTALLATION M A N U A L British Scottish Gas RD2 the floor standing boiler Floor standing gas fired fanned flue boiler 40 80 RD2 Installers guide to central heating boilers SERVICING...

Страница 2: ...system demands Complete range There are 7 models in the range All models include an overheat thermostat and a Flue Directional kit for side and top outlet installations Full system suitability All mod...

Страница 3: ...7 72 3 0 66 84 3 0 76 96 3 Boiler Output to Water kW Btu h 11 7 40 000 14 7 50 000 17 6 60 000 20 5 70 000 23 4 80 000 Burner Setting Pressure hot mbar in w g 10 4 4 2 11 6 4 7 12 6 5 1 10 9 4 4 14 0...

Страница 4: ...rom the boiler Without this facility the boiler operates as standard fanned flued boiler OPTIONAL EXTRA KITS Extension Duct kit To extend standard flue 90 o Flue Elbow Kit CONTENTS Air Supply 7 Boiler...

Страница 5: ...as overriding statutory obligations IMPORTANT These appliances are certificated by the BG Technology Certification Services for safety and performance It is important therefore that no external contro...

Страница 6: ...e boiler may be fitted up to the wall Boiler clearances The minimum overall dimensions of the space in which the boiler is to operate and to facilitate servicing are as shown in the Table Additional s...

Страница 7: ...nt permanent air vents are required for cooling purposes in the cupboard compartment at both high and low levels The air vents must either communicate with room internal space or be direct to outside...

Страница 8: ...is 3A Connection must be made in a way that allows complete isolation of the electrical supply such as a double pole switch having a 3mm 1 8 contact separation in both poles or a plug and socket serv...

Страница 9: ...etween the top of the boiler and the base of the cylinder 3 MINIMUM REQUIREMENTS Fully pumped systems 1 Open vent and cold feed connections must be made to the boiler flow and return tappings accordin...

Страница 10: ...re gauge covering at least the range 0 4 bar 0 60 lb in2 must be fitted to the system The gauge should be easily seen from the filling point and should preferably be connected at the same point as the...

Страница 11: ...tial system design pressure The cold feed pipe from the cistern should include a non return valve and a stop valve with an automatic air vent connected between them the stop valve being located betwee...

Страница 12: ...ont plate assy 18 Burner manifold 28 Gas cock 38 Pressure switch 41 Air inlet duct 42 Turret access cover assy 46 Boiler base plate 49 Flue baffle 65 Control box 92 Thermostat bush LEGEND 1 Heat excha...

Страница 13: ...ff z 1 2 square bar 1 off z Cable tie 4 off z Control thermostat knob 1 off z M3 x 6mm Pozi pan screw 1 off z Self tapping screw 2 off z British Gas Logo 1 off z Scottish Gas Logo 1 off To install the...

Страница 14: ...es 8 Draw the top panel forward and lift it off the boiler 9 Remove the 2 screws securing the LH side panel to the turret front panel and baseplate 10 Pull the panel forward disengaging from the colle...

Страница 15: ...ashers provided 4 Screw the supplied overheat thermostat sensor pocket into the appropriate front section tapping using approved jointing material Refer to Tables 7 and 8 5 Screw the supplied boiler f...

Страница 16: ...crew 6 When cutting the ducts always use the cardboard support provided 4 5 3 2 1 Mex 1843 6 10 9 8 7 15 TOP FLUE OUTLET ASSEMBLY Exploded view Note For lengths greater than 600mm see Frame 11 1 The b...

Страница 17: ...immediately around the cut hole should be flat make good if necessary For less accurate holes make good to approximately 125mm 5 diameter at the 2 wall faces 4 Remove the template from the wall Note...

Страница 18: ...sition for the foam seal measure the wall thickness and mark it onto the flue measuring from the groove near the terminal 2 Wrap the self adhesive foam strip round the flue ensuring that the foam is o...

Страница 19: ...ealing ring studs will locate in the back panel one way only This will ensure that the terminal is correctly aligned 24 CONNECTING THE FLUE TO THE BOILER Side 22 LOCATING THE BOILER Rear and Side flue...

Страница 20: ...n the split line 2 Fit the 2 halves of the side outlet plate to the wall ensuring they are behind the boiler sealing ring 1 Connect the flue terminal to the boiler using the length A of flue duct prev...

Страница 21: ...lbow 0 7m 29 FITTING THE KIT 1 Remove the cardboard support aid from the flue and place safely to one side 2 Fit the inner flue extension duct onto the inner flue duct 3 Fit the outer flue extension d...

Страница 22: ...he boiler inlet with the boiler operating 2 Extend a gas supply pipe NOT LESS THAN 15mm 1 2 OD to the boiler and connect to the gas cock situated at the front LH side of the boiler 3 Test the gas inst...

Страница 23: ...vity DHW applications the pump MUST be wired through the programmer 1 Remove the securing screw and lift off the mains terminal box cover 2 Route the mains cable from the LH rear of the boiler along t...

Страница 24: ...ED 4 LED 3 LED 2 LED 1 Fuse Modem v r pk pk r v b br br b y g r r Flow sensor Return sensor b b O heat stat Air pressure switch Boiler control potentiometer Note 1 Volt Free contacts If switched live...

Страница 25: ...ering of terminals on thermostats see the manufacturer s literature 3 This is a fully controlled system set the boiler thermostat to maximum 4 Switchmaster Smiths valves are similar but note that the...

Страница 26: ...or more than a day or so then a frost stat should be wired into the system This is usually done at the programmer in which case the programme selector switches are set to OFF and all other controls MU...

Страница 27: ...mostat F is OFF 3 Slacken the screw in the burner pressure test point B and connect a gas pressure gauge via a flexible tube 4 Switch the electricity supply ON and check that all external controls are...

Страница 28: ...er to ensure the greatest possible fuel economy consistent with household requirements of both heating and hot water consumption Advise the User of the precautions necessary to prevent damage to the s...

Страница 29: ...the flue terminal is unobstructed and that the flue system is sealed correctly h If the appliance has been installed in a compartment check that the ventilation areas are clear The servicing procedur...

Страница 30: ...HSI lead from the PCB and withdraw it from the box 3 Disconnect the detection lead from the electrode 4 Remove the screw securing the control box to the baseplate slide to the left to release and plac...

Страница 31: ...ed output with the related burner pressure and heat input Any Re assemble the boiler in the following order 1 Refit the flue baffles 2 Inspect the collector hood rope gasket and replace if necessary e...

Страница 32: ...he position of the HSI relative to the burner is correct 7 Check the operation of the boiler 1 Remove the lower front panel and grille assembly Refer to Frame 47 2 Remove the control box cover 3 Unplu...

Страница 33: ...ls assembly a Remove the control box cover b Unplug the HSI lead from the PCB and withdraw it from the box c Disconnect the detection lead from the electrode d Remove the screw securing the control bo...

Страница 34: ...ompound and re assemble in reverse order 6 Check the operation of the boiler 59 MAIN BURNER INJECTOR REPLACEMENT 1 Remove the lower front panel grille assembly Refer to Frame 47 2 Remove the burner an...

Страница 35: ...emove the silicon rubber tube from the fan pressure sensing point 3 Disconnect the fan leads 4 Remove the securing screw and withdraw the fan thermistor sensor from the scroll 5 Disconnect the silicon...

Страница 36: ...p off the holder and disengage the fuse Refer to Frame 34 for the location Mex 1860 Overheat thermostat reset button Control box cover PCB Reset button 64 THERMISTOR SENSOR LEAD HARNESS REPLACEMENT 1...

Страница 37: ...sor from the pocket 3 Remove the control box cover 4 Unfasten the overheat thermostat retaining nut disconnect the electrical leads and withdraw the thermostat from the control box 5 Fit the new therm...

Страница 38: ...fault found change PCB Check pressure switch sensing pipes for blockages bad connections and reversed connection Is pressure difference at switch greater than 0 9 mbar Change fan Is fault corrected YE...

Страница 39: ...2 802 27 E01 412 Detection electrode lead 460mm 1 052 888 30 386 149 Automatic ignition PCB PACTROL PCB No 42 with modem board PCB No 43 1 152 800 38 Pressure switch HONEYWELL C6065F1373 1 155 412 49...

Страница 40: ...40 British Gas 40 80 RD2 Installation Servicing SHORT LIST OF PARTS 66 SHORT PARTS...

Страница 41: ...Control front panel door 72 Magnetic strip 89 Control potentiometer 67 BOILER CONTROL PANEL Exploded View 68 BOILER CASING ASSEMBLY Legend 46 Baseplate 63 Control panel complete assembly 64 Control p...

Страница 42: ...851 29 37 30 34 Legend 29 Control box 30 PCB 34 PCB standoff not shown 37 Control box cover Legend 16 Burner assembly complete 18 Burner manifold 20 Main burner 21 Main burner injector 24 Gas valve 25...

Страница 43: ...43 British Gas 40 80 RD2 Installation Servicing...

Страница 44: ...ted by BSI British Gas Services Limited Registered in England No 3141243 Registered Office Charter Court 50 Windsor Road Slough Berkshire SL1 2HA British Gas Services Ltd has made every effort to ensu...

Страница 45: ...USERS G U I D E the floor standing boiler Floor standing gas fired fanned flue boiler 40 125 RD2 Householders guide to domestic central heating boilers British Scottish Gas RD2...

Страница 46: ...able The ideal replacement boiler Easy to install easy to operate and easy to service The British Gas RD2 really is the ultimate replacement floor standing range you can depend on it Proven reliabilit...

Страница 47: ...mm in mm in 40 50 Up 10 35 60 70 to 3 8 1 3 8 80 100 600 125 23 5 8 55 2 1 4 55 2 1 4 40 50 600 to 60 70 3000 35 35 80 23 5 8 to 1 3 8 1 3 8 118 100 600 to 2000 35 35 23 5 8 to 1 3 8 1 3 8 78 3 4 125...

Страница 48: ...should be serviced at least once a year by a CORGI registered installer Note The appliance model is given on the data plate located on the front of the boiler base plate behind the grille assembly THI...

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