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Supplied By www.heating spares.co  Tel. 0161 620 6677

British Gas RD1

 

Installation & Servicing

21

INSTALLATION

30 WATER CONNECTIONS

1.

Remove the plastic plugs from the flow and
return pipes.

2.

Make all water connections and check for
water soundness.

29 GAS CONNECTION

Refer to 'Gas Supply ', page 7.
Refer to Frame 2 for gas inlet service dimensions.

A  

minimum

 pressure of 20 mbar MUST be available at the boiler

inlet with the boiler operating. The main gas cock is on the left
hand side of the gas control valve, as shown. To facilitate
connection the gas cock may be removed from the gas control
valve.

28 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 duct onto the
outer air duct.

4.

Drill 3 - 3.2mm (

1/8

") dia. holes through the

outer air duct. 

Do not drill the inner flue

duct.

5.

Insert the self tapping screws provided to fix
the air duct in position.

6.

Repeat steps 1-5 if a second flue extension
is required.

31 ELECTRICAL CONNECTIONS

WARNING.

 The appliance must be efficiently earthed.

A mains supply of 230 V ~ 50 Hz is required.

All external controls and wiring must be suitable for mains
voltage. Wiring should be in 3-core PVC insulated & sheathed
cable, not less than 0.75mm

2

 (24 x 0.2mm) to BS. 6500 Table 16

Wiring Regulations and local regulations.

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, serving
only the boiler and system controls.  The point of connection to
the mains should be readily accessible and clearly marked.

Note.

For gravity DHW applications the pump MUST be wired
through the programmer and NOT directly to PL & PN.

1.

Remove the control box securing screws.  Swing the box
down into the servicing position. Refer to Frames 40 & 41.

2.

Route the mains cable into the box from the LHS of the
boiler.

3.

Connect the live and neutral wires into the terminal strip as
shown.

Note.

 

The boiler must be provided with this permanent supply

to terminal L & N.

4.

Connect the earth wire to the earth post.

5.

Secure the mains lead with the cable clamp.

IMPORTANT.

Control switching must not take place in this mains supply.

Terminal 
connection on 
(RHS) control 
support

Cla 1789

OH1 OH2 PL  PN EC1  EC2

Overheat thermostat

L N

Mains

br b y/g

Control box

PCB

Earth stud

Cla1790

INST

ALLA

TION

Summary of Contents for 30 RD1

Page 1: ...ww heating spares co Tel 0161 620 6677 INSTALLATION M A N U A L British Scottish Gas RD1 the wall hung boiler Wall hung gas fired fanned flue boiler 30 100 RD1 Installers guide to central heating boil...

Page 2: ...hatever the system demands Complete range There are 7 models in the range All models include a Downward Routing Pipe Kit and an overheat thermostat Full system suitability Most models are suitable for...

Page 3: ...water head m ft 0 45 1 5 Electrical supply 230 V 50 Hz Boiler power consumption 150W Fuse rating External 3A Internal F2A to BS 4265 Water content litre gal 2 7 0 6 3 65 0 8 4 65 1 0 4 65 1 0 Dry Weig...

Page 4: ...e through orifices which in this case are concentric The fan is down stream of the combustion chamber I2H An appliance designed for use on 2nd Family gas Group H only B G Certified P I No 87 BL 27 Des...

Page 5: ...water boilers of rated input not exceeding 60 kW BS 5449 Forced circulation hot water systems BS 5546 Installation of gas hot water supplies for domestic purposes 2nd Family Gases BS 7593 Treatment o...

Page 6: ...used inside the building the space in which the boiler is to be installed must be at least wide enough to accommodate the tool c If using the Complete Sealed System Unit then refer to the instructions...

Page 7: ...mbar MUST be available at the boiler inlet with the boiler operating Installation pipes MUST be fitted in accordance with BS 6891 Pipework from the meter to the boiler MUST be of an adequate size 100...

Page 8: ...ance is installed in a room containing a bath or shower then the appliance and any electrical switch or appliance control utilising mains electricity should be so situated that it cannot be touched by...

Page 9: ...boiler A suitable pump is a domestic circulator capable of providing an 11 C 20 F temperature differential e g Grunfos UPS 15 50 or equivalent The vertical distance between the pump and feed expansio...

Page 10: ...expansion vessel must be connected at a point close to the inlet side of the pump the connecting pipe being not less than 15mm 1 2 nominal size and not incorporating valves of any sort b The vessel c...

Page 11: ...ld 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 between the system and the automatic air...

Page 12: ...box 24 Pressure switch 30 Fan Note Gravity horizontal pipes should be ABOVE ceiling level and as SHORT as possible A MINIMUM inclination of 25mm per 3m run 1 per 10 is required to avoid air locks If t...

Page 13: ...nstructions Hardware Pack listed below Wall mounting template Wall mounting plate Side outlet terminal mounting plate Flue extension tube Boiler sealing ring Flue elbow Downward routing pipe kit Boile...

Page 14: ...oiler terminal box and if applicable the extension flue box es 10 PACKAGING AND CASING REMOVAL 11 DOWNWARD ROUTING PIPE KIT Product Qty Downward pipe routing bracket 2 off M8 Spacing pillar 1 off M5 S...

Page 15: ...upport bracket It is MOST IMPORTANT that the boiler is installed in a vertical position Flue length mm Accessories Product No Up to 600 B Pack 1 off 150 308 600 to 1550 B Pack 1 off D Pack 1 off 15030...

Page 16: ...brackets supplied in a separate kit must be used These brackets are secured to the wall mounting plate and it is essential to use only those holes as shown on the wall mounting template Care MUST be...

Page 17: ...rably with a 125mm 5 core boring tool ensuring that the hole is square to the wall If the hole has been accurately cut with a drill then making good the wall faces is not essential as seals are provid...

Page 18: ...ures correct alignment of the flue terminal 2 Drill 3 holes 3 2mm 1 8 dia through the outer flue duct 4 Stick the self adhesive foam strip provided in the hardware pack onto the flue immediately behin...

Page 19: ...e flue only 1 The boiler is supplied for rear outlet installation Remove the blanking plate from the direction required and use this to blank off the rear outlet Side and rear flue 2 Lift the boiler o...

Page 20: ...off see Frame 12 600 to 1550 B Pack 1 off D Pack 1 off see Frame 12 1550 to 2500 B Pack 1 off D Pack 2 off see Frame 12 2500 to 3000 B Pack 1 off D Pack 3 off see Frame 12 Note Side flue shown 26 FLUE...

Page 21: ...ed A mains supply of 230 V 50 Hz is required All external controls and wiring must be suitable for mains voltage Wiring should be in 3 core PVC insulated sheathed cable not less than 0 75mm2 24 x 0 2m...

Page 22: ...proprietary system is used follow the instructions supplied by the manufacturer Advice on required modifications to the wiring may be obtained from the component manufacturers EC1 EC2 Volt Free Conta...

Page 23: ...w w w CH2 b b r r br b pk y w w gy w or or r b b r r w w b br y y y g y g y g y g pk y w pk y r r r w 34 PICTORIAL WIRING LEGEND b blue bk black br brown r red y yellow w white or orange v violet pk p...

Page 24: ...wiring 2 For numbering 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 b...

Page 25: ...ole frost thermostat which should suffice for all systems which do not use the OFF terminals of the programmer Diagram B shows a change over frost stat which will cover most systems which do use CH OF...

Page 26: ...a a flexible tube 5 Swing the control box back into its working position 6 Switch the electricity supply ON and check that all external controls are calling for heat 7 Press the boiler reset switch H...

Page 27: ...ler you may wish to undertake the service contract yourself or alternatively offer to the customer the benefits of the British Gas Services details of which are outlined in the household pack supplied...

Page 28: ...ner support strap to the combustion chamber Remove the M5 pozi situated at the LH bottom rear of the burner and pull the burner downwards to disengage the retention tab Remove the burner to a safe pla...

Page 29: ...to the fan Disconnect the connector from the fan and slide into the flue 4b Side or top flue Slacken off two M4 screws securing the flue elbow and flue connector Disconnect the flue connector from the...

Page 30: ...checking the injector as detailed in Frame 48 and ensuring that there is an inlet pressure of 20 mbar available the pilot does not light then contact British Gas Services Relight in accordance with In...

Page 31: ...trical leads from the rear of the switch 12 Press in the 2 side retaining clips and remove the switch 13 Replace and re assemble in reverse order 14 Check the operation of the boiler 54 CONTROL POTENT...

Page 32: ...etention tab and remove the burner 4 At this stage the main burner injector can be removed checked cleaned or replaced as required Ensure that an approved jointing compound is used sparingly 5 Fit the...

Page 33: ...he mounting posts and withdraw from the control box 6 Fit the new PCB and re assemble in reverse order 7 Check the operation of the boiler Fuse To change the fuse prise the top off the holder and dise...

Page 34: ...sembly Refer to Frame 46 3 Drain the system 4 Disconnect the water connections If compression fittings are used then cut the pipes both above and below the fittings in order to allow the heat exchange...

Page 35: ...fan Is fault corrected YES NO Change pressure switch Is fault corrected Is the boiler casing correctly fitted Does the main burner light NO YES YES Does the hot surface ignitor turn off NO Is there a...

Page 36: ...ot burner injector HONEYWELL 4580 1075002 30 80 1 004982 386 131 Pilot burner injector HONEYWELL 4580 1075001 100 1 004 981 15 308 358 Pilot burner head Q359A with 308 358 Honeywell 4580 1075002 injec...

Page 37: ...rvicing 37 SHORT LIST OF PARTS LEGEND Numbers up to 51 relate to the B G spares list 10 Burner manifold 11 Air box and pilot assembly 12 Main burner 13 Main burner injector 16 Pilot shield 17 Gas cont...

Page 38: ...Installation Servicing Cla 1801 58A 26 21A LED 1 LED 2 LED 3 LED 4 23A Fuse SHORT LIST OF PARTS LEGEND 19 Control box 21A Thermostat potentiometer 26 Thermostat knob 23A Printed circuit board 58A Lock...

Page 39: ...Supplied By www heating spares co Tel 0161 620 6677 British Gas RD1 Installation Servicing 39...

Page 40: ...1994 Quality System accepted 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...

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