Installation and Servicing Instructions RD 430i Wall mounted condensing boiler for central heating 6 720 610 893-01.TD 6 720 611 449 GB (03.
Safety precautions 3 Symbols 3 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Details of the appliance EC Declaration of Conformity Standard package Description of appliance Accessories Casing dimensions Layout of appliance Function Electrical wiring diagram Technical data 4 4 4 4 5 5 6 7 8 9 2 Installation regulations 10 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.8.1 3.8.2 3.8.
Safety precautions Safety precautions Unpacking IMPORTANT HANDLING INSTRUCTIONS If you smell gas B Turn off gas service cock at the meter. B Open windows and doors. B Do not operate any electrical switches. B Extinguish any naked flames. B Telephone your gas company. If you smell fumes from the appliance B Switch off appliance (see page 24). B Open windows and doors.
Details of the appliance 1 1.1 Details of the appliance 1.3 EC Declaration of Conformity • Wall-mounted appliance, siting not dependent on room size This appliance is in accordance with the applicable requirements of the Gas Appliance Directive, Boiler Efficiency Directive, Electromagnetic Compatibility Directive and the Low Voltage Directive.
Details of the appliance 1.4 Accessories • Standard horizontal flue kit at 100 mm outside diameter for flues upto 4 m in length. • Flue duct kits for horizontal (125 mm outside diameter) for flue lengths upto 13 m and vertical flue systems for flue lengths 13.7 m. Fitting instructions are sent with these kits. • Heating programmer, • Security kit. 1.5 Casing dimensions min . min . 10* 10* Z 600 * X Y 850 850 120 101 13 103 30 200 360 395 * 200 35 440 6 720 610 599 - 01.TD Fig.
Details of the appliance 1.6 Layout of appliance 120 221.1 221.2 27 226 20 102 32.1 29 36 271 6 415 43 9 63 416 358 396 64 18 7 423 418 15 8.1 88 400 295 4 6 720 610 603 - 02.1O Fig. 2 4 6 7 8.1 9 15 18 20 27 29 32.1 36 43 63 64 88 102 120 221.
Details of the appliance 1.7 Function 26 27 229 226 33 29 30 36 32 J 20 221 6 35 29.1 9 63 52.1 69 64 56 57 317 61 4 358 7 52 400 18 88 55 8.1 ECO 3 0 2 1 4 5 15 E max 423 max M 84 13 43 71 45 72 47 6 720 610 603 - 03.2O Fig. 3 4 6 7 8.1 9 13 15 18 20 26 27 29 29.1 30 32 33 35 36 43 45 47 52 52.
Details of the appliance 1.8 Electrical wiring diagram o - orange bl - black r - red p - purple 33 365 364 61 317 366 363 367 ECO 4.1 25 V 153 230V/AC 230 V 310 136 400 135 312 328 313 151 124 789 p p L N Ns Ls LR 302 161 300 p 84 3 4 F M 328.1 9 18 M M 422 6 226 r r mains supply 52 o 52.1 56 o bl bl bl bl 36 bl 32 6 720 610 603 - 03.1O Fig. 4 4.1 6 9 18 32 33 36 52 52.1 56 61 84 135 136 151 153 161 226 300 302 310 312 313 317 328 328.
Details of the appliance 1.9 Technical data Units RD 430i Natural gas RD 430i Propane Max. rated heat output net 40/30°C central heating Max. rated heat output net 50/30°C central heating Max. rated heat output net 80/60°C central heating kW kW kW 31.2 30.9 29.2 31.2 30.9 29.2 Max. rated heat input net kW 29.5 29.5 Min. rated heat output net 40/30°C Min. rated heat output net 50/30°C Min. rated heat output net 80/60°C kW kW kW 8.4 8.3 7.4 11.6 11.4 10.5 Min. rated heat input net kW 7.
Installation regulations Gas supply Condensate analysis, mg/l Ammonium 1.2 Nickel 0.15 ≤ 0.01 Mercury Cadmium ≤ 0.001 Sulphate Chromium ≤ 0.005 Zinc ≤ 0.015 Tin ≤ 0.01 Lead Halogenated hydrocarbons ≤ 0.002 Hydrocarbons 0.015 Vanadium Copper 0.028 pH-value ≤ 0.0001 1 Total length of gas supply pipe (metres) 3 9 Gas discharge rate (m3/h) 8.7 5.8 4.6 22 18.0 12.0 9.4 28 ≤ 0.001 4.
Installation 3 Installation B Always turn off the gas cock before carrying out any work on components which carry gas. i 3.1 Fixing of the appliance, gas and flue connections, commissioning of the system and electrical connections may only be carried out by competent persons authorised by CORGI. Important remarks B Appliance should only be installed in sealed central heating and hot water systems. 3.
Installation LV RV INDIRECT CYLINDER LV RV LV RV Radiator Valve - Flow RV Lockshield Valve - Return LV Heating Return APPLIANCE LV Refer to Appliance Water Flow Diagram Safety Discharge 6 720 610 601-04.1O Cylinder Return RV Heating Flow Note: A drain cock should be fitted at the lowest point of the heating circuit and beneath the appliance Hot Water Flow Mains Cold Water BS Stop Valve Fixed Cylinder Type Fig.
Installation 3.3 Siting the appliance Regulations concerning the Installation Site Surface temperature B Relevant national regulations must be complied with section 3.8.1. The max. surface temperature of the casing and the flue is less than 85 °C. This means that, no special safety precautions are required with regard to flammable building materials and fitted furniture. The specified clearances must be maintained. B Consult the installation instructions for details of minimum clearances required.
Installation 3.4 Wall mounting frame assembly B Take the wall mounting frame out of the package and screw together with 6 screws as shown in fig. 7. Use the inner lugs on the top and bottom horizontal sections. B Screw the pre-plumbing manifold with two screws to the wall mounting frame. 6 720 610 597-08.1O Fig. 9 6 720 610 597-06.1O 3.5 Pre-piping the system Fig. 7 B Hold the wall-mounting frame against the wall ensuring that it is vertical.
Installation Condensate Termination and Route External condensate pipework The appliance has a built-in syphonic condensate trap eliminating the need for external traps. Connect to the 22mm plastic drain pipe and extend the pipe run away from the control panel and appliance witha constant fall of 2.5° or 25mm in every metre. See fig. 12. The syphonic condensate trap collects condensate into a trap which releases it in 100 ml quantities. This helps to prevent the discharge from freezing.
Installation Fixing the appliance 3.7 B Fit the washers onto the gas and water connections. Water connections B Lift the boiler onto the wall-mounting frame. The lugs pass through the rectangular holes in the boiler back panel. B Check that the O-rings or seals are in place before tightening the connection. B Take care not to disturb the washers on the connections. B Turn on the service valves for central heating flow and return and fill the heating system through a WRAS approved filling loop.
Installation 3.8.1 lighting, activated by passive infra-red sensing heads. If the terminal is less than 2 m above a surface to which people have access then a guard must be fitted. The guard must be evenly spaced about the terminal with a space of 50 mm in each direction and fixed with plated screws. A guard Type K6 for the standard horizontal flue, can be obtained from Tower Flue Components, Vale Rise, Tonbridge TN9 1TB.
Installation 3.8.2 Installation of the flue The standard 100 mm diameter horizontal flue system is suitable for lengths upto 4 m. Flues upto 650 mm do not require an extension duct assembly. Flues between 1600 mm and 4000 mm require extension duct assemblies. NOTE: Flue lengths between 650 mm and 730 mm cannot be accomodated. Refer to fig. 17, 18, 19.
Installation Maximum 1600mm Outer Wall Flue Turret Extension Duct Clamp Terminal Assembly 6 720 610 599 - 00.TD Fig. 18 Flue with One Extension Outer Wall Flue Turret Clamp Extension Duct Clamp Extension Duct Clamp Terminal Assembly 6 720 610 599 - 01.TD Fig. 19 Flue with extensions Flue Turret Clamp Flue Terminal Extension Flue Duct Wall Sealing Gasket 6 720 610 599 - 01.TD Fig. 20 Flue Components 3.8.3 Flue duct preparation and assembly Measure the flue length L. Refer to fig.
Installation Assemble flue system completely. Push the ducts fully together and clamp in the positions. The slope of the terminal outlet must be directed as per Fig. 23. L The assembly will be made easier if a solvent free grease is lightly applied i.e Silicone lubricant, to the male end of the ducts. NOTE: An inner wall sealing plate is provided which should be fitted to the ducts before assembly. 120 6 720 610 599 - 01.
Electrical connections 4 Electrical connections B Remove screw and slide terminal cover forwards to remove. Refer to fig. 26. B Always disconnect the power supply to the appliance at the mains before carrying out any work on the electrical systems and components. 3 0 4 2 5 1 E B Allow mains cable to protrude at least 50 cm from wall. B To maintain the splash-proof (IP) design: cut the cable grommet hole size to match the diameter of the cable, see fig. 27. 6 720 610 336 -18.
Electrical connections 4.2 Connecting TR2 Room thermostat The TR2 should be connected to terminals 3, 4 and F beneath the Textdisplay, page 8, Fig. 4, Pos. 422. 4.3 Mains Voltage external controls connections Please note, that the in-built supplied controls and text display timer prevent and negate the need for any further external controls. 4.4 Connecting a Hot Water Cylinder The sensor for the connection is in the package of the appliance. B Snap out plastic tongue.
Commissioning 5 Commissioning 27 136 365 61 317 366 367 358 ECO 363 310 400 364 8.1 135 E 295 15 170 nn . 171 172 173 170 6 720 610 597 - 05.1O Fig. 30 8.
Commissioning B Before commissioning, the gas supply pressure must be checked at the gas supply pressure test point (see page 6, fig. 2, item 7). Natural gas appliances must not be operated if the gas supply pressure is below 18 mbar or above 24 mbar. LPG appliances must not be operated if the supply pressure is not 37 mbar at the inlet to the appliance. B Open automatic vent (27) and re-close after venting (page 23). Switching off the appliance B Set the master switch to (0).
Commissioning 5.5 Appliances with Storage Tank: Setting hot water temperature B Do not set the temperature higher than 60°C for normal operation. B Only use temperatures of up to 70°C temporarily for thermal disinfection purposes. i With the text display you can set additional hot water charging times and temperatures. B Set the hot water temperature by means of the temperature control on the appliance. 5.
Commissioning 5.10 Appliance Data Monitoring If the external Gateway module is fitted then the operating system must be commissioned at this stage. 8. Make the jumper JP1 on the ADM while powering up the appliance, see Fig. 35. Observe LED on ADM flashing. The flashing rate is 0.5 Hz, the ADM is now in “House Address Acquisition mode”. Commissioning of ADM and Gateway Check if Gateway is plugged into the telephone line and mains. JP1 1. Remove the cover from the gateway. 2.
Text Display B To start programming, press any button, e. g. . The display lighting switches on and the main menu is displayed: 6 Text Display 6.1 General Description T • The text display is used to display information about the appliance and the system and to alter the settings displayed. • Once the appliance has been in operation for one day, the text display module has a power buffer period of about 10 hours during which it will run without the mains power supply.
Text Display B Press the button to confirm the setting. The cursor then returns to the top line. 6.3 Menu structure B Press the button to confirm the setting and return to the previous menu (Fig. 38 page 27). Main menu -or- Set Set hour/day hour/day 1. 2. 3. - B Do not press any other buttons for 15 minutes. 6.2.1 Deleting a setting Heating Either overwrite the setting or press the C button to delete it. 6.2.
Text Display 6.4 Setting the time/day 6.4.1 Setting the time and day For details of how to set the time and day, refer to page 27. i 6.4.2 Changing winter and summer time: B Only adjust the clock! Do not alter the switching points (for heating, economy, etc.). Holidays In the Holiday programme, the central heating runs in Economy mode and the hot water is switched off (frost protection function remains active).
Text Display 6.5.2 Setting the Economy temperature (if TR2 is connected) This option allows you to set the room temperature for Economy mode (Off (Economy)). This function is only active if: • Automatic mode or Economy mode is set on the TR 2 room thermostat. B From the main menu, select Heating and then from the first submenu, select Set Economy temp.. B Use the or button to set a temperature between 5 and 30 °C. 6.5.
Text Display B Press or 24 hours. 6.8 Settings 6.8.1 Heating (if TR 2 is connected) to set the number of seconds in Basic setting: “+ 0 s” Optimum Start LCD contrast: B From the main menu, select Settings and from the first submenu, select Heating. B Press or to switch Optimum Start on or off. B Press and hold the button (about 5 seconds) until the display shows Time correction and LCD contrast. Basic setting: “ON” B Press 6.8.2 B Press the value.
Individual settings 7 Individual settings 7.1 Mechanical settings 7.1.1 Checking the size of the expansion vessel Maximum pressure at maximum CH flow temperature is 2.5 bar. If the pressure is greater than this then fit an extra expansion vessel. Refer to table 11. System Capacity – BS7074:1 Expansion Vessel Pressure and System Capacity Expansion Vessel litres 10 bar 0.75 1 bar litres 82 1.5 bar litres 46 Expansion Vessel Charge Pressure System pressure and capacity Table 11 7.1.
Individual settings B Press any button to activate the main menu. B Press or button until the arrow cursor is pointing to Settings. B Press the button. B Press oder button until the arrow cursor is pointing to Service. B Press the button. The cursor is pointing to Display service parameters. B Press and hold the button (for about 5 seconds) until the display shows Adjust service parameters and the first service function to be set, e.g. 2.0, Operating mode.
Converting the appliance to different gas types 8 Converting the appliance to different gas types The setting is factory sealed at maximum. Adjustment to the rated heat input and min. heat input is not necessary. B Press the Checking the gas supply pressure B Measure the CO2 level. B Check the gas supply pressure at the gas supply pressure testing point. B Prise off the seal on the gas flow restrictor. Operating mode normal. B Press button. or to select Max.
Converting the appliance to different gas types B Press normal. or until the display shows 234.1 B Press the button. The text display shows Store settings. B Press to select yes. B Press the button. B Remove testing probe from the flue gas testing point (234) and refit sealing plug. B Re-seal gas valve adjusting screw and gas flow restrictor. B Replace the outer case by locating it on the top lugs and pushing backwards until the bottom clips are fully engaged.
Maintenance 9 Maintenance B Always disconnect the appliance from the electrical power supply (fuse, circuit breaker) before carrying out any work on the electrical systems or components. B Always turn off the gas cock before carrying out any work on components which carry gas. i There is a Service booklet for the Engineer, order no. 8 716 103 143, available to competent persons. i All safety and control systems are monitored by the Bosch Heatronic.
Maintenance 9.1 Pre-Service Check List Date 1 Call up the last fault stored by the textdisplay , (see page 31). 2 Check ionisation current, Service Function 3.3, (see page 38). 3 Perform visual check of air/flue duct. Visual check of diaphragm for soiling and splits (see page 40). 4 Check gas supply pressure (see page 34). 5 Test combustion air/flue gas (see page 35). 6 Check CO2 setting for min./ max. (gas/air ratio) (see page 35). mbar min. % max.
Maintenance 9.2 Description of servicing operations The combustion performance must be checked before and after any servicing work on the combustion and burner components. Refer to section 8.2. B Remove the fan and the burner as described in the text headed “Burner” (see page 39). Checking the ionisation current, Service Function 3.3 B Select Service Function 3.3. (See page 32 “Displaying Service Functions”) If the display shows 2 or 3, the ionisation current is OK.
Maintenance B Clean out the condensate collector and trap connection (with other end of brush). 6 720 610 332-75.2R Fig. 49 B Refit the clean-out cover using a new seal and tighten screws to torque of approx. 5 Nm. Burner B Check that the gas cock is turned off and the master switch is in the OFF position. B Remove the clips (1.) and unscrew the two bolts (2.). Refer to fig. 50. B Unscrew and remove the two hexagon screws securing the fan (3.). B Slacken fully the rear securing bolt (4.).
Maintenance Diaphragm in mixer unit B Refit and prime the siphon. B Take care not to damage diaphragm (443) when removing and refitting it. B Open mixer unit (29). B Carefully withdraw diaphragm (443) from fan intake tube and check for soiling and splits. Condensate Drain Siphon 3. 443 Drain Plug 29 Fig. 53 Expansion vessel The expansion vessel should be checked once a year. 1. B Depressurise appliance. B If necessary, adjust expansion vessel charge pressure to static head of the heating system.
Maintenance 9.3 B Remove the pcb control board. Replacement of Parts Before changing any components check that the gas is turned off and that the appliance is electrically isolated. When necessary close the system valves and drain the appliance. Refitting is a reverse of the procedure for removal using new seals or o-rings as appropriate. 9.3.1 PCB control board and transformer B Switch off the appliance. B Disconnect appliance from the power supply. B Unplug all connectors from the control box (inc.
Maintenance 9.3.2 9.3.3 Fan Assembly 3. Pump B Switch off the appliance. B Disconnect the appliance from the power supply. B Remove two switchbox fixing screws (1.). Refer to fig. 57. 2. B Lower switchbox (2.). B Remove screw from underside of right-hand plastic cover plate (3.). B Pull cover plate forwards to remove (4.). 4. B Unscrew and remove the the siphon by releasing the jubilee clip. Refer to fig. 53. B Unscrew the pump union nuts (5.). Refer to fig. 57.
Maintenance B Undo pipe unions by withdrawing the clips. 9.3.7 B Remove 3-way valve. B Check that the gas cock is turned off. Gas Valve B Lower the control panel. Refer to fig. 57. B Pull off the solenoid connections at the rear of the valve. B Undo the union, within the inner casing, securing the valve to the gas/air tube. Refer to fig. 56. B Remove the white plastic cap from the gas valve. B Release the gas inlet union at the manifold assembly.
Maintenance 9.3.8 Electrode assembly B Refer to section 9.2. B Use a new seal if the existing seal is damaged. 9.3.9 Pressure gauge B Drain the appliance. B Lower the facia. Refer to fig. 57. B Pull forward from the top and lift the heat exchanger from the casing. B Transfer components, as necessary, to the new heat exchanger. B Ensure that all the seals are in place and all of the connections are tight before re-commissioning the appliance.
Appendix 10 Appendix 10.1 Fault Codes More detailed fault finding procedures are described in the Service Booklet for the Engineer number 7 181 465 347. Display code Description Remedy A1 Pump has run dry Check system pressure, add water and bleed system as necessary A8 Break in communication Check connecting lead to TR2 b1 Keyed plug not detected. Insert keyed plug correctly, test and replace if necessary. C1 Fan speed too low. Check fan lead and connector, and fan; replace as necessary.
Appendix 10.2 Short parts list Key Description Qty GC Spare part number 1 Sensor - Flue gas temp. 1 8 722 963 858 0 2 Sensor - CH flow temp.
Mains switch ON. 6 720 611 449 GB (03.11) Repeats 5 times (N.G.) or 3 times (L.P.G.) before lock-out. Green light ON. CH demand. Ignition spark for 5 seconds. Ignition sequence Room thermostat and/or mains programmer or link ON AND Electronic facia programmer (if fitted) ON AND CH control knob ON. Fan runs to purge gas from burner. No Burner lights. Red light ON. Pump ON Fan to start speed. Gas valve opens. Yes Burner remains OFF until flow temperature is below set value.
Appendix EXCELLENCE COMES AS STANDARD Manufactured exclusively for British Gas by The Bosch Group Bosch Group, Worcester Heat Systems, Cotswold Way, Warndon, Worcester WR4 9SW.
Users Instructions and Customer Care Guide RD 532i/RD 537i/RD 542i combi Condensing boiler RD 430i system Condensing boiler 6 720 610 598 - 00.2O 6 720 610 604 GB (03.
Contents Contents Excellence comes as standard 4 Safety precautions 5 1 General notes 7 2 Controls 11 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Operating the Appliance Preparation Switching the Appliance On/Off Switching on the Central Heating Controlling Central Heating Combination Boilers: Setting Hot Water Temperature System boiler with Storage Tank Summer Mode, Hot Water Only (Combi Appliances) Frost protection (Combi Appliances) Fault Condition 12 12 14 15 15 16 17 18 19 19 4 4.1 4.2 4.2.1 4.
Contents 4.5.1 4.5.2 4.5.3 4.6 4.6.1 4.6.2 4.7 4.8 4.8.1 4.8.2 4.8.3 4.
Excellence comes as standard Excellence comes as standard Thank you for purchasing an RD 532i/RD 537i/RD 542i /RD 430i condensing appliance. The RD 532i/RD 537i/RD 542i /RD 430i Series has been developed by the Bosch Group and the strictest quality control standards are demanded throughout every stage of production. Indeed, the Bosch Group have led the field in innovative appliance design and performance for many years.
Safety precautions Safety precautions Gas Safety (Installation and Use) Regulations 1998 It is the law that all gas appliances are installed by a competent person in accordance with the above regulations. Failure to install appliances correctly could lead to prosecution. It is in your interest, and that of safety, to ensure compliance with the law. If you smell gas: B Turn off gas service cock at the meter. B Open all doors and windows. B Do not operate any electrical switches. B Do not smoke.
Safety precautions Combustible materials B Do not store or use any combustible materials (paper, thinners, paints etc.) in the vicinity of the appliance. Health and safety B This appliance contains no asbestos products. B There is no potential hazard due to the appliance being electrically unsafe. B There are no substances used in the construction that are a potential hazard in relation to the COSHH Regulations (Control of Substances Hazardous to Health Regulations 1988).
General notes 1 General notes To get the best from your appliance please read these instructions carefully. Sealed heating systems The appliance is fitted to a sealed heating system which is prepressurised. Your installer will tell you of the minimum and maximum pressure which must be indicated on the pressure gauge. Check regularly that the pressure is maintained and contact your installer or maintenance engineer if there is a permanent significant drop in the pressure.
General notes Clearances Your installer will have provided adequate space around the appliance for safety and servicing access. Do not restrict this space with the addition of cupboards, shelves etc. next to the appliance. Left-hand side Right-hand side In Front Above Casing (Vert. Flue) Above Flue Turret Below 10 mm 10 mm 600 mm 75 mm 30 mm 200 mm Table 1 Room thermostat A room temperature controller is may be fitted to control the central heating.
General notes With all mains fed systems the flow of water from individual taps will vary with the number of outlets operated simultaneously and the cold water mains supply pressure to the property. Flow balancing using “ball-o-fix” type valves is recommended to avoid an excessive reduction in flow to individual outlets. For further information contact British Gas Technical Services Department.
General notes Do not allow the flue terminal fitted on the outside wall to become obstructed or damaged. Pump The pump is a fully modulating type to which the parameters have been set by the manufacturer and must not be adjusted. 10 6 720 610 604 GB (03.
Controls 2 Controls 136 365 61 317 366 367 363 310 400 ECO 364 8.1 135 295 170 171 172 173 170 6 720 610 598 - 01.2O Fig. 1 8.
Operating the Appliance 3 Operating the Appliance 3.1 Preparation Turn on the gas cock (172). B Press in the handle and turn it anti-clockwise as far as the stop (when handle is in line with direction of flow, the cock is open). Central heating system valves (170) B Using a spanner, turn square nut until groove is in line with direction of flow (see detail). Groove at right angles to direction of flow = off. Cold water inlet valve (173) B Turn handle so that it is in line with direction of flow.
Operating the Appliance Check the central heating system pressure B The pointer on the pressure gauge (8.1) should be about 1 bar. B If the pointer is below 1 bar (when the system is cold), top up the system with water until the pointer is 1 bar. Your installer will have shown you how to do this. B The maximum operating pressure of 2.5 bar at maximum central heating flow temperature must not be exceeded. If the pressure increases to 3 bar then the relief valve (15) opens. 2 3 1 4 0 bar 8.
Operating the Appliance 3.2 Switching the Appliance On/Off Switching on B Switch on the appliance at the master switch (I). The indicator lamp shows green and the display will show the central heating flow temperature, when the appliance is operating in the central heating mode. 6 720 610 333-04.1O Fig. 4 i If the display alternates between -II- and the central heating flow temperature, the trap filling programme is active.
Operating the Appliance 3.3 Switching on the Central Heating B Turn the central heating temperature control level: to the desired – “Min” setting: 35°C – Low-temperature heating: setting “E” (approx. 75°C) – “Max” setting: 88°C When the burner is lit, the red indicator lamp is illuminated. 6 720 610 333-05.1O Fig. 5 3.4 Controlling Central Heating B Set the timer to the correct time. B Set room thermostat to the desired room temperature. B Set temperature driven control unit, if fitted.
Operating the Appliance 3.5 Combination Boilers: Setting the Hot Water Temperature Hot water temperature On combi models, the hot water temperature can be set to between approx. 40°C and 60°C using the temperature control . The domestic hot water temperature is not shown on the display. 6 720 610 333-07.1O Fig. 6 Control Setting Water Temperature Anti-clockwise limit approx. 40°C approx. 55°C Clockwise limit approx.
Operating the Appliance ECO mode with demand detection, button is lit The demand detection function enables maximum gas and water economy. Briefly turning a hot water tap on and then off again signals demand to the appliance which then heats up the water to the set temperature. Hot water is thus available in about 1 minute. ECO mode, button is lit Water is not heated up until hot water is drawn. This means that there is a longer waiting period before hot water is available. 3.
Operating the Appliance Control Setting Water Temperature Anti-clockwise limit approx. 10°C (frost protection) l approx. 60°C Clockwise limit approx. 70°C Table 3 ECO button Pressing and holding the ECO button , until it lights up switches from Comfort mode to ECO-mode. Comfort mode, ECO button is not lit (factory setting) In Comfort mode the hot water tank has priority. The hot water cylinder is first heated up to the set temperature. The appliance then switches to central heating mode.
Operating the Appliance 3.8 Frost protection (Combi Appliances) B Leave master switch switched on. If the appliance is to be left for long periods switch the central heating on and set the room temperature controller at 6°C. B Add a suitable anti-freeze fluid to the water in the central heating system. Suitable products are available from Betz-Dearborn Tel.: 0151 4209563, Fernox Tel.: 01799 550811 and Salamander Tel.: 0121 378 0952. 3.
Text Display 4 Text Display 4.1 General Description • The text display is used to display information about the appliance and the system and to alter the settings displayed. • Once the appliance has been in operation for one day, the text display module has a power buffer period of about 10 hours during which it will run without the mains power supply. After that period has elapsed, the clock function shuts down but all other settings are retained. 4.2 Programming a b c C 6 720 610 337-08.
Text Display • Domestic Hot Water temperature (System boiler if a Storage Tank is accorded). Additional indication if a special programme is active: • x holidays • Hot water immediately • Constant on (comfort, if TR2 is not connected) • Constant off (economy, if TR2 is not connected). Other special operating modes may be displayed during commissioning, servicing, etc. The programming procedure is described in detail below using the clock function as an example: B To start programming, press any button, e.
Text Display B Confirm the selection by pressing the The corresponding submenu is displayed: button. T 6 720 610 598-05.2O Fig. 10 Submenu: Time/day In the submenus, the top line indicates what action is required. The bottom line shows the previous menu level, if applicable (see Fig. 10). B Use the or button to select Time/day. B Confirm the selection by pressing the The corresponding submenu is displayed: button. H T 6 720 610 598-06.2O Fig.
Text Display B Use the or button to set the minutes. B Confirm the setting by pressing the B Use the or button. button to set the day of the week. B Press the button to confirm the setting. The cursor then returns to the top line. -orB Press the button to confirm the setting and return to the previous menu (Fig. 9 page 22). -orB Do not press any other buttons for 15 minutes. 4.2.1 Deleting a setting Either overwrite the setting or press the C button to delete it. B Find the setting to be deleted.
Text Display 4.3 Menu structure Main menu 1. Time/day/hol- Time/day idays Heating Hot water Info 24 2. - 3. - - - Set econ- omy temp. (if TR2 is connected) Manual (if TR2 is not connected) - Hot water program - - Hot water immediately - Holidays Heating program - Parameters to change/select - Hours - Minutes - Day of week Days holiday - Day - 1st operating mode - 1st switching point ... - 6th switching point 5...
Text Display Main menu Settings 1. Heating Hot water (System boiler-models) Service Page Submenu 2. - 3. - Parameters to change/select Optimum Start Off/On 33 Only charging times/ 30 times and temperatures Display service param. Further options - - 33 Language -English/ -Français/ -Deutsch -Time correction -LCD contrast - 34 - 35 Operating times Fault history 4.4 Setting the time/day 4.4.1 Setting the time and day 34 34 34 For details of how to set the time and day, refer to page 21.
Text Display ically cancels Economy mode at midnight on the last day and returns to Automatic mode. i The day on which you enter the days holiday counts as the first day of the holiday, i.e. the unit starts the holiday program immediately. Only include the day on which you are returning if you don’t want the heating to return to the normal program on that day! To cancel Holiday mode early: B In the Holidays submenu: Press the C button until the display shows 0 . 26 6 720 610 604 GB (03.
Text Display 4.5 Heating 4.5.1 Heating program Basic setting (Automatic mode) • The appliance switches automatically between normal heating, Economy mode and Frost protection mode according to the timer settings entered. • Basic setting: – Heating starts at 6:00 am – Economy starts at 10:00 pm Setting options • Maximum of six switching points per day with three different operating modes (Heating, Economy, Frost protection). • Same times for Monday to Friday. • Same times for Saturday and Sunday.
Text Display B Press . The display shows Set 1. operating mode. B Set the desired first operating mode (Heating, Economy or Frost protection). B Press . The display shows Set 1. time period. B Set the desired first time period. B Press . Set the following operating modes and time periods as described for the first. B If necessary: select the next day and enter the operating modes and timer periods as described above.
Text Display 4.5.3 Manual operating mode (if TR2 is not connected) For selecting an operating mode that is different from the one set in the heating programme (Automatic mode). • You can choose between Automatic, Constant on (comfort) and Constant off (economy). • The manually selected operating mode starts immediately. • Constant off (economy) and Constant on (comfort) are automatically reset at 00.00 (midnight).
Text Display 4.6 Hot water General description • Combi models only: The basic settings provide a straightforward timer programme: enabled from 5:00 am, disabled from 10:00 pm. The ECO button must not be lit (Comfort mode). • System models (with Storage Tank): The basic settings provide a timer programme: enable from 5:00 am, disable from 10:00 pm. With the menu Hot water (see page 33) you can choose a timer-/temperature programme with the basic settings: 60°C from 5:00 am, 10°C from 10:00 pm.
Text Display 4.6.1 Hot water program • Up to six switching points per day can be set. • There are two operating modes: Blocked and Released. B From the main menu, select Hot water and then from the first submenu, select Hot water program. B Set the days of the week, Blocked/Released (operating mode) in the same way as for the switching points and modes for heating as described on page 27. 4.6.2 Hot water immediately (System models) • Hot water immediately ON: – Comfort mode is active for 2 hours.
Text Display 4.7 i Info B Select Info from the main menu. You can view the following information: Display text Description Room temperature (if TR 2 connected) Current temperature in the room where TR 2 is installed Required room temperature (if TR 2 connected) Required temperature in room where TR 2 is installed Operating mode (if TR 2 connected) E. g. Heating, Economy in Automatic mode or Economy, Heating, Frost protection in manual mode Max. flow temp.
Text Display 4.8 Settings 4.8.1 Heating (if TR 2 is connected) Optimum Start B From the main menu, select Settings and from the first submenu, select Heating. B Press 4.8.2 or to switch Optimum Start on or off. Hot Water (Storage Tank, System boiler models only) The text display can control the hot water either with Times and temperatures or only times. • Times and temperatures: One can choose up to six different times with temperatures, see page 30 “Hot water”.
Text Display Service parameters Language Available languages are: English, Français (French), Deutsch (German). B From the main menu, select Settings, from the first submenu select Service, from the Second submenu select Further options, and from the third submenu select Language. B Press or to select the desired language. Two other supplementary functions can be selected from the third submenu Language: • Time correction • LCD contrast.
Text Display water) since commissioning. B From the main menu, select Settings, from the first submenu select Service, from the Second submenu select Further options, and from the third submenu select Operating times. Fault history This option displays any faults that have occurred for the information of the service engineer. The first fault displayed may still be active. Any other faults displayed are no longer active.
Text Display 4.9 Individual timer programmes Heating periods for central heating Time Operating mode 6. Time Operating mode Time 5. Operating mode 4. Time Operating mode 3. Time Operating mode 2. Time Status 1. Operating mode Switching point Monday Tuesday Wednesday Thursday Friday Saturday Sunday Enable/disable hot water function Time Operating mode 6. Time Operating mode Time 5. Operating mode 4. Time Operating mode 3. Time Operating mode 2. Time Status 1.
Fault finding 5 Fault finding Problem Cause Remedy Desired room temperature is not reached Thermostatic valve(s) set too low Increase thermostatic valve setting(s) Temperature control for CH flow set too low Increase CH flow temperature control setting Air trapped in heating system Bleed radiators and heating system Desired room temperature exceeded by large amount Radiators are too hot Turn down thermostatic valves Temperature rises instead of falling Clock is incorrectly set Check settin
Tips on saving energy 6 Tips on saving energy Heating economically The boiler is designed to provide a high level of comfort while keeping gas consumption and the resulting environmental effect as low as possible. The gas supply to the burner is controlled according to the level of demand for heat. The boiler continues to operate with a low flame if the demand for heat reduces. The technical term for this process is modulating control.
General Information Hot water A lower setting on the hot water temperature control can result in considerable energy savings. For combi appliances: The on-demand activation using the ECO-button makes possible the maximum savings of gas and water. Now you know how to heat your home economically with the RD 532i/RD 537i/RD 542i /RD 430i gas condensing boiler. If you have any other questions, please contact your installer – or write to us.
Maintaining your appliance 8 Maintaining your appliance Your new RD 532i/RD 537i/RD 542i /RD 430i gas-fired appliance represents a long-term investment in a reliable, high quality product. In order to realise its maximum working life, and to ensure it continues to operate at peak efficiency and performance, it is essential that your boiler receives regular, competent servicing and maintenance checks beyond the initial 2 year guarantee period.
Fault or breakdown 10 Fault or breakdown This product is supported in the UK by Worcester Heat Systems Ltd. – part of the Bosch Group. A specialist factory trained field SERVICE ENGINEER is available to attend a breakdown or manufacturing fault occuring on this appliance. No charge will be made for parts and/or labour providing: • An appliance fault is found and the appliance has been installed within the past 24 months. Reasonable evidence of this must be supplied on request.
Your guarantee 11 Your guarantee This appliance is guaranteed against faulty material or workmanship for a period of 24 calendar months from the date of installation subject to the following conditions and exceptions. • That during the currency of this guarantee any components of the unit which are proved to be faulty or defective in manufacture will be exchanged or repaired free of material charges and free of labour charges by Worcester Heat Systems Limited.
Guarantee registration 12 Guarantee registration You should complete and return the postpaid Guarantee Registration Card within 14 days of purchase. The card will register you as the owner of your new RD 532i/RD 537i/RD 542i /RD 430i appliance and will assist us in maintaining an effective and efficient customer service by establishing a reference and permanent record for your boiler. This will not affect your statutory rights in any way. Important: For your own record: Model ............................
13 Operating Instructions Quick Reference Switching on 6 720 610 333-04.1O Switching the central heating on 6 720 610 333-05.1O Text Display Set switching times and operating mode within the text display. Hot water temperaeture – Combination boiler only 6 720 610 333-07.1O “ECO”-button lit – Economy mode. “ECO”-button not lit – Comfort mode Refer to page 19. Fault Condition Switching off 6 720 610 333-11.
