British Gas ICC2 combi ZWBR 11-37 ICC2 Installation And Servicing Instructions Download Page 133

Page: 133 / 148

Text Display

6 720 610 604 GB (03.06)

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 auto-
matically reset at 00.00 (midnight).

•

To cancel the manually selected operating mode:

– select the relevant menu and then press the

button,

– or select a different operating mode,

– o r set

Holiday

From the main menu select

Heating

and then from the first

submenu Manual select required mode.

Summary of Contents for ICC2 combi ZWBR 11-37 ICC2

Page 1: ...g Instructions ICC2 combi Wall mounted condensing boiler for central heating and mains fed domestic hot water 6 720 610 598 00 1O ZWBR 8 30 ICC2 GC Number 41 108 09 ZWBR 11 37 ICC2 GC Number 41 108 10 6 720 610 602 GB 03 02 OSW ...

Page 2: ...r programme 29 6 6 2 Hot water immediately 29 6 7 i Info 29 6 8 Settings 30 6 8 1 Heating if TR 2 is connected 30 6 8 2 Hot Water Storage Tank ZSBR models only 30 6 8 3 Service 30 6 9 Individual timer programmes 30 7 Individual settings 31 7 1 Mechanical settings 31 7 1 1 Checking the size of the expansion vessel 31 7 1 2 Setting the central heating flow temperature 31 7 2 Settings on the Bosch He...

Page 3: ...nity 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 Combustion air Ambient atmosphere B The combustion air ambie...

Page 4: ...dependent on room size Natural gas models are low emission appliances Multifunction display Bosch Heatronic control system with integrated tex tdisplay for servicefunctions and faults 3 channel digital timer for one heating circuit Variable pump Automatic ignition Modulating control Full safety systems incorporating Bosch Heatronic with flame ionisation monitoring solenoid valves and temperature s...

Page 5: ...ions are sent with these kits Heating programmer Security kit 1 5 Casing dimensions Fig 1 13 Manifold assembly 101 Outer case 103 Facia cover X Standard Concentric Horizontal Flue System min 310 mm Alternative Concentric Flue System min 250 mm Y Standard Concentric Horizontal Flue System 158 mm Alternative Concentric Flue System 121 mm Z Standard Concentric Horizontal Flue System 105 mm Alternativ...

Page 6: ...as flow volume 88 3 way valve combi 98 DHW flow switch combi 102 Inspection window 120 Fixing points 221 1 Flue duct 221 2 Combustion air intake 226 Fan assembly 295 Appliance type sticker 234 Testing point for combustion products 234 1 Testing point for combustion air 271 Flue duct 349 Cover plate for twin flue duct connection 355 Plate type domestic hot water heat exchanger 358 Condensate trap 3...

Page 7: ...H return 52 Solenoid valve 1 52 1 Solenoid valve 2 55 Filter 56 Gas valve CE 427 57 Main valve disc 61 Reset button 63 Adjustable gas flow restrictor 64 Adjusting screw for min gas flow volume 69 Control valve 84 Motor 88 3 way valve 90 Venturi 91 Pressure relief valve 93 Water flow regulator 94 Diaphragm 95 Pushrod with switch cam 96 Microswitch 97 Valve for hot water flow volume 98 Water valve 2...

Page 8: ... A AC 230 V 153 Transformer 161 Link 226 Fan 300 Code plug 302 Earth connection 310 Temperature control for hot water 312 Fuse slow T 1 6 A 313 Fuse slow T 0 5 A 317 Digital display 328 Terminal block for AC 230 V Mains supply 328 1 Link 363 Indicator lamp for burner 364 Indicator lamp for power supply 365 Chimney sweep button 366 Service button 367 ECO button 400 Textdisplay 422 Connecting TR2 6 ...

Page 9: ...apacity l 10 10 10 10 Hot water specifications Hot water flow rate factory setting l min 8 8 8 8 Max hot water flow rate l min 14 0 14 0 14 0 14 0 Outlet temperature range C 40 60 40 60 40 60 40 60 Max permissible water supply pressure bar 10 10 10 10 Min inlet pressure bar 0 2 0 2 0 2 0 2 Specific flow rate l min 13 7 13 7 16 9 16 9 Flue Flue gas temp 80 60 C rated min load C 78 57 78 57 87 58 87...

Page 10: ...ater supplies for domestic purposes BS 5440 1 Flues and ventilation for gas appliances of rated input not exceeding 70 kW net Flues BS 5440 2 Flues and ventilation for gas appliances of rated input not exceeding 70 kW net Air Supply BS 6891 Installation of low pressure gas pipework installations up to 28mm R1 BS 7074 1 Code of practice for domestic heating and hot water supply BS 7671 Requirements...

Page 11: ...n anti syphonage device at the point of the flexible hose connections Over rim bidets may be connected to the appliance provided that it is in accordance with the requirements of the local water company The outlet s should be shrouded and unable to have any temporary hand held spray attached No anti syphonage arrangements are necessary In exceptionally hard water areas a device to prevent scale fo...

Page 12: ...he Installation Site B Relevant national regulations must be complied with section 3 9 1 B Consult the installation instructions for details of min imum clearances required Combustion air In order to prevent corrosion the combustion air must not contain any corrosive substances Substances classed as corrosion promoting include halogenated hydrocarbons which contain chlorine and fluorine compounds ...

Page 13: ...all mounting frame against the wall ensur ing that it is vertical B Mark the position of the flue duct hole if a rear flue is to be used Refer to fig 1 and 16 B Mark the holes for the wall mounting frame onto the wall drill and plug the holes and screw the wall mounting frame to the wall with the screws provided Fig 8 B Screw the pre plumbing manifold with two screws to the wall mounting frame Fig...

Page 14: ... of at least 2 5 3 7 Fitting the appliance B Remove packing taking care to observe the instruc tions on the packing B Lie the boiler on its back Removing the outer case B Remove retaining screw on left hand side 1 B Press both catch levers backwards 2 Boiler Boiler Sink Ø 22 min Ø 22 min Ø 22 min Ø 22 min Siphon Siphon 75 min trap Invert No length restriction No length restriction No length restri...

Page 15: ...off gas cock to protect gas valve against dam age from excessive pressure B Check gas supply pipe B Release the pressure on the gas supply pipe 3 9 Flue Systems The only flue systems that may be used are those sup plied with the boiler The flue system must be installed in accordance with the requirements of BS5440 1 Standard 100 mm flue system The standard concentric flue system provides for a hor...

Page 16: ...erminal Position kW input expressed in net Balanced ﬂ ues room sealed Fanned draught A1 Directly below an opening air brick opening windows etc 300 mm B 1 Above an opening air brick opening window etc 300 mm C 1 Horizontally to an opening air brick opening window etc 300 mm D Below gutters soil pipes or drain pipes 75 mm E Below eaves 200 mm F 2 Below balconies or car port roof lowest point 200 mm...

Page 17: ...ng plates Extension kit comprises Air duct Flue duct Duct clamp Refer to fig 20 Instructions for fitting other flue systems are packed with the relevant flue kit Check that the position chosen for the appliance is sat isfactory Refer to fig 16 Fig 16 Marking the position of the side flue opening Fig 17 Standard Flue Appliance 120 Drilling point for flue duct opening 3 30 mm metre Centre line of fl...

Page 18: ... 1600mm Flue Turret No Clamp Terminal Assembly Outer Wall Extension Duct 6 720 610 602 09 1O Clamp Flue Turret No Clamp Clamp Extension Duct Clamp Extension Duct Terminal Assembly Outer Wall 6 720 610 602 10 1O Extension Air Duct Extension Flue Duct Terminal Assembly Duct Clamp Wall Sealing Plates 6 720 610 602 11 1O Flue Turret ...

Page 19: ... An inner wall sealing plate is provided which should be fitted to the ducts before assem bly Push the assembly through the wall and fix the turret to the appliance with the clamp Refer to fig 24 Fig 24 Flue turret Ensure that the turret is fully entered into the socket on the boiler From the outside fix the outer wall plate to the terminal and after ensuring the duct is properly i nclined towards...

Page 20: ...x 0 20 mm to BS6500 Table 6 Temperature rated 100 C Protection IPX4D External fuse 3 A 4 1 Connecting the appliance To gain access to the mains connection remove the drop down facia cover The drop down cover is removed by lowering it to the horizontal position and pushing firmly upwards at the rear of the supports to release the cover Lift cover from the appliance After installation or in the even...

Page 21: ...te If an external timer is used then the domestic hot water pre heat facility can only be isolated by actuating the ECO button 0 1 2 3 4 5 E 6 720 610 332 12 1R 13 14 10 12 8 9 5 7 L N N L LR S S 4130 14 1R 230 VRoom Thermostat Connections Ns Ls LR ST8 Ns Ls LR ST8 Remove Link Neutral Live Switched Live Neutral Live Switched Live Motor 230 V Programmer Connections 230 V room thermostat and Program...

Page 22: ...stem should be flushed in accordance with the guidelines given in BS7593 1992 Treatment of water in domestic hot water systems Full instruc tions are supplied with proprietary cleansers sold for this purpose If an inhibitor is to be used after flushing it should be used in accordance with the inhibitor man ufacturers instructions To drain the appliance shut the system valves and open the system dr...

Page 23: ... is filled after the appliance has been installed or after the appliance has been out of use for a long period or the mains supply has been interrupted For that reason the appliance remains at minimum heating output for 15 minutes B Open automatic vent 27 and re close after venting page 22 Switching off the appliance B Set the master switch to 0 The green indicator lamp goes out The optional timer...

Page 24: ...o approximately 2 l min B To increase the flow rate max 14 l min turn screw on flow switch anti clockwise The outlet temperature will decrease relative to the increase in the flow rate B To reduce the flow rate min 8 l min turn screw on flow switch clockwise The outlet temperature will increase relative to the decrease in the flow rate Fig 34 5 6 Summer mode hot water only With room thermostat B T...

Page 25: ...ash If the button flashes B Press and hold the button until the display shows The appliance will then start up again and the display will show the central heating flow temperature If the button does not flash B Switch the appliance off and then on again at the master switch The appliance will start up again and the central heat ing flow temperature will be displayed i A list of faults that may occ...

Page 26: ...s an example B To start programming press any button e g The display lighting switches on and the main menu is displayed Fig 36 Main menu B Use the or button to move the cursor arrow on the left of the menu so that it points to the desired menu item In this example the cursor is positioned next to the menu item Time day holidays B Confirm the selection by pressing the button The corresponding subm...

Page 27: ...e following message is displayed Please wait Initialising 6 3 Menu structure i The hours of service can not be reset to 0 C C C Submenu Main menu 1 2 3 Parameters to change select Page Time day holi days Time day Hours Minutes Day of week 28 Holidays Days holiday 28 Heating Heating program Day 1st operating mode 1st switching point 6th switching point 28 Set econ omy temp if TR2 is con nected 5 30...

Page 28: ...nomy or Frost protection switching on at the same times Saturday and Sunday Individual day of the week e g Thursday to have the relevant program always switching on at the specified time on that day of the week i e Heating Economy or Frost protection at the same time every Thursday B Press The display shows Set 1 operating mode B Set the desired first operating mode Heating Econ omy or Frost prote...

Page 29: ...ching points and modes for heating as described on page 28 6 6 2 Hot water immediately Hot water immediately ON Comfort mode is active for 2 hours Comfort mode is active for 2 hours normal auto matic program Hot water mode according to timer programme entered B From the main menu select Hot water and then from the first submenu select Hot water immedi ately B Press or to switch Hot water immedi at...

Page 30: ...e selected from the third submenu Language Time correction LCD contrast Time correction B Press and hold the button about 5 seconds until the display shows Time correction and LCD contrast B Press or to select Time correction B Press the button The display shows Change value B Press or to set the number of seconds in 24 hours Basic setting 0 s LCD contrast B Press and hold the button about 5 secon...

Page 31: ... provides a convenient means of setting various appliance functions This description is limited to those functions necessary for commissioning Displaying service functions All service functions are displayed 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 or button until the arrow cursor is pointing to Service...

Page 32: ... any level between min rated heat output and max rated heat output to limit it to the specific heat requirements The factory setting is the max rated heat output 100 B Look up heating output in kW and corresponding code number on the settings tables for heating out put see page 48 B Enter the code number on the text display module B Measure the gas flow rate and compare with the fig ures specified...

Page 33: ...plug from flue gas testing point 234 Refer to fig 40 B Insert testing probe about 135 mm into the flue gas testing point and seal testing point Fig 40 B On the text display unit select in the main menu Set tings Service Display service parameters B Press and hold the button for about 5 sec onds until the display shows Adjust service parameters and the first service function to be set 2 0 Operating...

Page 34: ...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 Check that the case is properly aligned with facia Refer to fig 13 B Secure by replacing ...

Page 35: ...e The button will light up and the display shows the CH flow temperature B Remove sealing plug from flue gas testing point 234 fig 43 B Insert testing probe about 135 mm into the testing point and seal testing point B CO and CO2 levels B Refit sealing plug B Press and hold button until the display shows The button will stop flashing and the display shows the CH flow temperature i By testing the O2...

Page 36: ...sistance to earth Replace the text display module or the Heatronic PCB If the text display module is replaced the service func tion settings are retained B The remaining settings have to be re entered If the Heatronic PCB is replaced B Re enter the service function settings as recorded in the commissioning record B Always disconnect the appliance from the electrical power supply fuse circuit break...

Page 37: ... page 35 6 Check CO2 setting for min max gas air ratio see page 35 min max 7 Check gas and water systems for leaks see page 15 8 Check hot water outlet temperature see page 38 9 Check heat exchanger see page 38 mbar 10 Check burner see page 39 11 Clean condensation trap see page 40 12 Check charge pressure of expansion vessel matches static head of heating system mbar 13 Check central heating syst...

Page 38: ...stainless steel B Before removing the heat exchanger shut the inlet valve and drain the hot water circuit B Use new seals when replacing the heat exchanger Fig 44 Primary Heat exchanger There is a special accessory kit no 840 for cleaning the heat exchanger order no 7 719 001 996 B Check control pressure on the air gas mixer unit at max rated heat output using an electronic manome ter Fig 45 B Rem...

Page 39: ...en 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 secur ing the fan 3 B Slacken fully the rear securing bolt 4 B Remove the burner coverplate Fig 50 B Remove the burner skin and clean components Do not use a wire b...

Page 40: ...ssembly taking care not to mislay the inspection window Diaphragm in mixer unit for ZWBR 8 30 ICC2 B Open mixer unit 29 B Carefully withdraw diaphragm 443 from fan intake tube and check for soiling and splits Fig 52 B Carefully refit diaphragm 443 the correct way round into the fan intake tube B Seal the mixer unit 29 Diaphragm in mixer unit for ZWBR 11 37 ICC2 B Remove fan and mixer unit assembly...

Page 41: ...em does not retain the pressure the expan sion vessel and the heating system should be checked for leaks 9 3 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...

Page 42: ...h connector has a positive clip fixing B Remove fixing screws attaching fan to the burner cover 3 B Remove fan together with gas pipe and mixer unit B Separate the fan from the pipe and mixer unit by twisting the mixer unit to release it 4 9 3 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 58 B Lower switchbox ...

Page 43: ...alve Fig 59 After refitting B Fill system bleed and re pressurise see Installation Instructions 9 3 5 3 way diverter valve motor B Switch off the appliance B Turn off the service cocks B Unplug connector from 3 way valve motor Refer to fig 59 B Pull out retaining clip B Remove motor 9 3 6 Sensors B Check that the appliance is electrically isolated Central Heating Flow Temperature Sensor Item 36 fi...

Page 44: ...ed in section 8 1 Fig 60 9 3 8 Domestic Hot Water Heat Exchanger B Refer to section 9 2 B Use new seals when fitting the new heat exchanger 9 3 9 Electrode assembly B Refer to section 9 2 B Use a new seal if the existing seal is damaged 9 3 10 Pressure gauge B Drain the appliance B Lower the facia Refer to fig 58 B Twist the pressure gauge head anti clockwise to release it from the casing Refer to...

Page 45: ...burner Refer to section 9 2 B Disconnect the sensors Refer to section 9 3 6 B Undo the central heating flow union B Undo the top connection of the pump Refer to fig 57 B Undo the grey plastic cap next to the top pump con nection at the base of the heat exchanger B Unscrew and remove the condensate trap Refer to section 9 2 B Unscrew and remove the two screws securing the heat exchanger top bracket...

Page 46: ...lead E9 Safety temp limiter in CH flow has tripped Check system pressure check safety temp lim iters check pump operation check fuse on pcb bleed appliance EA Flame not detected Is gas cock turned on Check gas supply pres sure power supply igniter electrode and lead ionisation sensing electrode and lead flue duct and CO2 level F0 Internal error Check electrical connector contacts program mer inter...

Page 47: ...alve 1 8 717 401 012 0 10 Electrode assembly 1 8 718 107 077 0 11 Electrode lead 1 8 714 401 999 0 12 Pump 1 8 717 204 477 0 13 Pressure gauge 1 8 717 208 079 0 14 Burner skin seal 1 8 711 004 168 0 15 Transformer facia 1 8 747 201 358 0 16 Flow switch 1 8 717 002 110 0 17 3 way diverter valve 1 8 717 010 062 0 18 Heat exchanger washer 1 8 710 103 153 0 19 Washer set Condensation Trap 1 8 710 103 ...

Page 48: ...1 21 4 37 4 80 24 2 24 4 42 7 90 27 2 27 5 48 0 100 30 2 30 5 53 4 Table 20 Propane Display code Heat output kW Heat input kW 40 12 1 12 2 50 15 1 15 3 60 18 1 18 3 70 21 1 21 4 80 24 2 24 4 90 27 2 27 5 100 30 2 30 5 Table 21 Natural gas G20 Display code Heat output kW Heat input kW Gas vol flow rate l min at tV tR 80 60 C 30 11 1 11 3 19 7 40 14 9 15 0 26 3 50 18 6 18 8 32 8 60 22 3 22 5 39 4 70...

Page 49: ... until flow temperature is below set value Gas valve shuts Pump remains ON Demand ends Yes No NOTE The appliance controls can be set to one of 2 modes of operation 1 Comfort mode Full pre heat 2 ECO mode a Operates as an instantaneous combination boiler b Demand Detection a short demand less than 5 seconds switches the control to Comfort mode for 5 mins Mini pre heat The Factory setting is Comfort...

Page 50: ... Burner stabilises at start speed for 5 10 secs Fan speed reduces over 15 secs Gas valve closes Red light OFF Minimum heat input for 15min Boiler operates to match system load and CH control setting Boiler unused for long period Over temperature shut down if water temperature is 5 C above set value Burner remains OFF until flow temperature is below set value Gas valve shuts Pump remains ON Pump an...

Page 51: ...6 720 610 602 GB 03 02 Appendix 51 ...

Page 52: ...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 Telephone 01905 754624 Fax 01905 754619 ...

Page 53: ... 6 720 610 333 00 1R ZSBR 7 28 ICS1 GC Number 41 108 04 ZWBR 8 30 ICC2 GC Number 41 108 09 ZBR 8 35 ICS1 GC Number 41 108 05 ZWBR 11 37 ICC1 GC Number 41 108 10 ZWBR 7 28 HE plus GC Number 47 311 56 ZWBR 11 35 HE plus GC Number 47 311 57 7 181 465 347 01 07 OSW ...

Page 54: ... 1 Boiler failure codes indication 14 4 1 1 on the boiler 14 4 1 2 on the programmer optional accessory 14 4 2 Summary 14 4 2 1 Appliance faults 14 4 2 2 Faults that are not indicated on any display 14 4 3 How to use the fault tables 16 4 4 Faults indicated on display 17 4 5 Faults that are not displayed 36 4 5 1 Appliance faults 36 4 5 2 Programmer faults 41 5 Appendix 45 5 1 NTC values 45 5 1 1 ...

Page 55: ...cations to the appliance or carry out any repairs on it B Draw attention to the need for an annual service or maintenance contract if applicable Symbols Signal words indicate the seriousness of the hazard in terms of the consequences of not following the safety instructions Caution indicates that minor damage to property could result Warning indicates that minor personal injury or seri ous damage ...

Page 56: ...iter Variable charac teristic pump Automatic vent Gas flow restrictor adju sting screw for CO2 max Gas valve adjusting screw for CO2 min Plate type heat exchanger ZWBR Hot water NTC sensor ZWBR CH flow Silencer Fan Fan connector Mixer unit Condensation trap Gas supply pipe Flue gas safety temperature limiter Testing points flue gas air Inspection opening Water switch ZSBR Change over valve motor C...

Page 57: ...Press and hold the button for about 5 sec onds until the display shows shows Adjust service parameters and the first service function to be set e g 2 0 Operating mode If a fault has occurred the display will show 0 0 and the last fault B Press or button until the desired service function is displayed B Press the button The first line of the display shows Change value B Use the and buttons to enter...

Page 58: ...55 1 5 Required flow temp 0 99 C 1 9 Module detection no module detected bus module 2 0 Operating mode normal Min Max normal 2 2 Pump switch mode 1 3 2 2 3 Stor tank charge output 0 100 100 2 4 Anti cycle mode 0 15 min 3 min 2 5 Max flow temperature 35 88 C 88 C 2 6 Switch diff flow temperature 0 30 C 0 C 2 7 Autom anti cycle mode on off on 2 9 Actual output 0 100 3 0 Fan speed 0 255 U s 3 3 Ionis...

Page 59: ...locked heat demand 4 4 Heat demand heating yes no Heat demand stor tank yes no 4 5 Heat demand hot water yes no Keep hot period yes no 4 6 Internal regulator blocked heat demand 5 0 Max output heating 27 100 100 5 1 Permanent ignition no yes no 5 2 GFA status error 00h FFh 5 5 Min output 27 100 27 5 8 Cyclic boiler starts on off on 5 9 Fan speed start low high low 6 7 Pump off hot water off on off...

Page 60: ... off on on 7 3 Air purge mode off on autom deaktivat permanent on on autom deaktiv at off 7 4 Actual map pump step 1 8 7 5 Map pump load index 0 255 7 6 Map pump type 0 99 7 7 Output reduction off only in heating mode only in hot water mode in heat hot water mode only in heating mode 8 5 Siphonfillprogram on boiler min output on adjust min output off on boiler min output 9 2 Hot water on demand of...

Page 61: ...ccording to the commands received from the programmer Min mode the appliance runs constantly at minimum output The text display shows MIn mode The 2 digit dis play alternates between the CH flow temperature and Max mode the appliance runs constantly at maxi mum output The text display shows Max mode The 2 digit dis play alternates between the CH flow temperature and 2 3 Stor tank charge outp The h...

Page 62: ...sed with the appliance 3 5 Pump blocking time ZBR models only If the system incorporates a 3 way valve external to the appliance the heating pump is disabled while the 3 way valve is being actuated therefore the blocking time of the heating pump should be the actuation time of the 3 way valve The blocking time has an adjustment range of 0 to 16 with each increment equivalent to 15 seconds The adju...

Page 63: ... an output dependent basic charge The heating output can be limited to any level between the min rated heat output and the max rated heat out put to suit the specific heat requirements The factory setting is maximum rated output display shows 100 5 1 Permanent ignition This function allows permanent ignition without gas supply to be activated for the purposes of checking the ignition mechanism 5 2...

Page 64: ...map heating is set to 0 Pump step adjustable This service function corresponds to the pump speed switch used on conventional heating pumps 7 2 Antiblock map pump not ZBR The appliance is supplied with this function activated If the pump threatens to jam an oscillating pump action is activated Afterwards the required operating mode is continued 7 3 Aeration mode not ZBR The first time the appliance...

Page 65: ...on at minimum output The text display shows Siphon fill program and the 2 digit display alternates between II and the CH flow temperature The factory setting is 1 activated 9 2 Hot water on demand The appliance is supplied with this function activated This function relates to mode the button lights up The demand detection function enables maximum gas and water economy Briefly turning a hot water t...

Page 66: ...rogrammer optional accessory A TW 2 remote control unit can also be connected to the text display module If other more functions are required another program mer must be connected Those programmers are then controlled via the bus module BM1 For more detailed information refer to the installation instructions for the boiler and the installed programmer Faults on this programmer are indicated by tex...

Page 67: ... Programmer faults TR 2 Page Set room temperature not reached X 41 Set room temperature exceeded by large amount X 43 Set room temperature not reached 41 Temperature rises instead of falling X 43 Room temperature too high in Economy mode X 43 Incorrect or no modulation X 43 Heat store fails to heat up 44 Table 4 Appliance faults ZBR A ZSBR A ZWBR A Page Table 3 ...

Page 68: ...mplete heat demand cycle until the appliance switches off If the fault is now cured the appliance will revert to nor mal operation and the fault finding process is complete Now simply re check the setting of the two temperature controls If the fault EA recurs during the heat demand cycle it will be shown on the display again In that case continue the fault finding procedure from Step 3 thermal cut...

Page 69: ...water leaks and repair as necessary B Top up system B Turn ON the appliance A1 2 no 2 2 Activate venting sequence B Activate menu option Show service parameters B Select 7 3 Aeration mode select setting On autom deactivat and confirm B Vent appliance1 B Vent radiators 3 1 See installation instructions 3 Audible bearing damage on pump yes B Power OFF the appliance B Drain appliance B Replace pump B...

Page 70: ...er OFF the appliance B Change heat store NTC sensor 2 B Plug the connection wire B Turn ON the appliance A7 3 no B Change the 20 pin connector lead assembly 3 3 Temperature between 95 and 100 is displayed B Unplug the connector After max 60 sec Does the displayed code change to a value between 0 and 5 yes B Power OFF the appliance B Change heat store NTC sensor 2 B Plug the connection wire B Turn ...

Page 71: ... appliance B Change hot water NTC sensor B Plug the connection wire B Turn ON the appliance A7 3 no B Change the 20 pin connector lead assembly 3 3 Temperature between 95 and 100 is displayed B Unplug the connector After max 60 sec Does the displayed code change to a value between 0 and 5 yes B Power OFF the appliance B Change hot water NTC sensor B Plug the connection wire B Turn ON the appliance...

Page 72: ... Wiring between TR 2 and text display OK Terminal 3 on TR 2 connected to Terminal 3 on textdisplay Terminal 4 Terminal 4 etc yes B Turn ON the appliance 3 no B Rewire correctly as specified in the installation instructions B Turn ON the appliance after 90 sek A8 3 3 Lead s defective B Check leads for continuity and replace as necessary A8 4 4 TR 2 defective B Power OFF the appliance B Change TR 2 ...

Page 73: ... 3 1 no 4 3 Heat store NTC 1 B Unplug connector from PCB con trol board B Short circuit the connector using wire jumper After max 60 sec Display changes to temperature between 100 and 95 yes B Replace heat store NTC sensor 1 no B Power OFF the appliance B Disconnect the boiler electrical connection B Change PCB control board B Reconnect the boiler electrical connection B Turn ON the appliance 4 Te...

Page 74: ...Select 1 2 Code plug B Compare number displayed with that shown in Appendix No number or incorrect number last three digits displayed yes 2 no 4 3 Code plug loose incorrect or defec tive B Power OFF the appliance B Replace code plug1 making sure code number is correct B Turn ON the appliance b1 4 1 For order no refer to Appendix 4 The PCB control board is damaged B Power OFF the appliance B Discon...

Page 75: ...es B Power OFF the appliance B Replace fan lead B Turn ON the appliance C6 3 no 3 3 Fan defective yes B Power OFF the appliance B Plug the connection wire B Replace fan B Plug the connection wire B Turn ON the appliance C6 4 no 4 4 The PCB control board is damaged B Power OFF the appliance B Disconnect the boiler electrical connection B Change PCB control board B Reconnect the boiler electrical co...

Page 76: ...FF the appliance B Plug heat store NTC sensor connector into PCB control board 303 page 46 Pos 303 If lead has no connector replace heat store NTC sen sor B Turn ON the appliance d3 4 no 4 4 Existing heat store thermostat con nected to Terminals 7 8 and 9 yes B Power OFF the appliance B Fix the additional bridge 8 9 in the right position and close the screws B Turn ON the appliance d3 5 no 5 5 The...

Page 77: ...no 2 2 Heating outlet NTC sensor Temperature between 95 and 100 is displayed yes The CH flow NTC sensor is interrupted B Power OFF the appliance B Replace CH flow NTC sensor observe fitting instructions for NTC sensor when doing so B Turn ON the appliance E2 3 no 3 3 Check if the 20 pin connector lead assembly is damaged B Power OFF the appliance B Change the 20 pin connector lead assembly B Turn ...

Page 78: ...ctrical connection B Turn ON the appliance B Press does appliance restart E9 3 no 3 3 Is lead disconnected from one both safety temperature limiters yes B Power OFF the appliance B Connect lead B Turn ON the appliance B Press does appliance restart E9 4 no 4 4 B Power OFF the appliance B Unplug the connector from the cut off device B Measure the NTC electrical resist ance R yes B Change the over h...

Page 79: ...urn ON the appliance B Press does appliance restart E9 6 no B Remount the fuse B Turn ON the appliance 6 The PCB control board is damaged B Power OFF the appliance B Disconnect the boiler electrical connection B Change PCB control board B Reconnect the boiler electrical connection B Turn ON the appliance E9 and flashing Safety temperature limiter has tripped Check Action ...

Page 80: ...s models does the building have a supply pres sure regulator yes B Check that it is fitted correctly and functioning properly and correct if necessary B Check supply pressure inform gas company if outside correct range B Press does appliance restart EA 6 no 6 LPG models is the flow rate of the gas supply to the appliance correct yes 6 no B Is there enough gas in the supply cylinder B Is there air ...

Page 81: ...start EA 10 8 Is condensation trap in condensing boiler blocked yes B Unscrew condensation trap and clean B Press does appliance restart EA 12 no 9 9 Check the gas valve B Power OFF the appliance B Unplug the connectors from the gas valve B Measure the gas valve coils I and II electrical resistance R 164 40 Ω yes B Reconnect the gas valve B Turn ON the appliance B Press does appliance restart EA 1...

Page 82: ...nition electrode B Press does appliance restart EA 14 14 Ignition cable connector engaged in switchbox yes 15 no B Power OFF the appliance B Engage ignition cable connector in switchbox B Turn ON the appliance B Press does appliance restart EA 15 15 Ignition cable defective yes B Power OFF the appliance B Replace ignition cable B Turn ON the appliance B Press does appliance restart EA 16 no 16 16 ...

Page 83: ...ppliance restart EA 18 18 Check if the 20 pin connector lead assembly is damaged B Power OFF the appliance B Change the 20 pin connector lead assembly B Turn ON the appliance B Press does appliance restart EA 19 19 The PCB control board is damaged B Power OFF the appliance B Disconnect the boiler electrical connection B Change PCB control board B Reconnect the boiler electrical connection B Turn O...

Page 84: ...vice Further options Fault history Other faults apart from F0 dis played yes B Deal with fault s displayed as instructed in rele vant fault table s no 3 4 flashing yes B Press button B Initiate demand for heat by pressing the but ton and then cancel after 30 seconds by pressing the button again B Initiate demand for heat twice more as described above F0 4 no 4 5 The PCB control board is damaged B ...

Page 85: ... Remove PCB control board PCB control board damp yes B Dry PCB control board e g with hair dryer B Refit PCB control board B Reconnect the boiler electrical connection B Press does appliance restart F7 3 no 3 3 Is there a problem with the flue B Check CO2 level in combustion air 0 2 CO2 yes B Check flue and repair or replace if necessary no 4 4 The PCB control board is damaged B Power OFF the appl...

Page 86: ...stion air 0 2 CO2 yes B Check flue and repair or replace if necessary B Press does appliance restart FA B Power OFF the appliance 4 no 4 4 The gas valve is damaged B Change the gas valve B Turn ON the appliance B Press does appliance restart FA B Power OFF the appliance 5 5 Check if the 20 pin connector lead assembly is damaged B Change the 20 pin connector lead assembly B Turn ON the appliance B ...

Page 87: ...lug text display module con nector B Connecting lead between text dis play module and Heatronic OK yes B Plug in connector FC 3 no B Replace text display module FC 3 3 Text display module defective B Replace text display module Fd and flashing Reset button pressed inadvertently Check Action 1 B Press button again 2 The PCB control board is damaged B Disconnect the boiler electrical connection B Ch...

Page 88: ...vert appliance to correct gas type1 2 B Test gas supply pressure OK 1 yes 3 no B Decommission appliance B Notify gas company 3 Problem with flue B Check CO2 level in combustion air 0 2 CO2 yes B Check flue and repair or replace if necessary no 4 4 B Remove silencer flue pipe and mixer unit Is internal flue pipe silencer dirty or clogged or are seals defective or incorrectly fitted yes B Repair or ...

Page 89: ...gas company 3 Problem with flue B Check CO2 level in combustion air 0 2 CO2 yes B Check flue and repair or replace if necessary no 4 4 Flue gas CO2 levels measured at min and max load do not match specified levels 1 B Measure CO2 levels yes B Adjust CO2 levels no 5 5 Gas volumetric flow too high when CO2 level correctly set1 yes B Reduce gas volumetric flow rate by means of adjusting screw on gas ...

Page 90: ...er OFF the appliance Ignition poor 4 4 Ignition cable defective yes B Power OFF the appliance B Replace ignition cable B Turn ON the appliance B Press button B Power OFF the appliance Ignition poor 5 no 5 5 Electrode assembly defective B Power OFF the appliance B Remove electrode assembly Electrodes worn out yes B Replace electrode assembly B Turn ON the appliance B Press does appliance restart Ig...

Page 91: ...d seal if necessary B Ensure seal is fitted in correct position 1 See installation instructions Ignition too harsh ignition poor Check Action Loose or broken contact on heat store NTC sensor Check Action Heat store NTC sensor lead is not fit ted as described in the installation instructions i e the cable does not pass through the cable grip in the switchbox B Record condition of appliance as found...

Page 92: ...between the average CH flow temperature and the specified CH flow temperature As a result depending on the heat draw the specified CH flow temperature is briefly exceeded In extreme cases it can happen that the burner does not switch off until the maximum CH flow tempe rature is reached even though a lower CH flow temperature has been specified 1 B Activate menu option Show service parameters B Se...

Page 93: ...ol on boiler set too low yes B Turn up CH flow temperature control no 3 3 Air in the heating system B Power OFF the appliance B Check appliance and system for water leaks and repair as necessary B Top up system B Activate menu option Show service parame ters B Select 7 3 Aeration mode select setting On autom deactivat and confirm B Vent appliance1 B Vent radiators B Turn ON the appliance 1 See ins...

Page 94: ...ntrol 4 no 4 4 Heat store connected via HSM yes 5 no 6 5 Is heat store temperature unreacha ble CH flow temperature control set too low yes B Turn up CH flow temperature control 6 no 6 6 Air in the heating system B Power OFF the appliance B Check appliance and system for water leaks and repair as necessary B Top up system B Activate menu option Show service parame ters B Select 7 3 Aeration mode s...

Page 95: ...ation location1 3 no 3 3 B Turn down thermostatic valve s n 1 See installation instructions Temperature rises instead of falling Check Action Timer clock DT 2 incorrectly set B Check setting and correct as necessary Room temperature too high in Economy mode Check Action Building retains heat well yes B Set economy temperature lower or B Set earlier start time for Economy mode Incorrect or no modul...

Page 96: ...store fails to heat up Check Action 1 with TR 2 CH flow temperature control on boiler set too low B Increase CH flow temperature control setting 2 Hot water temperature control on boiler set too low B Increase hot water temperature control setting ...

Page 97: ... NTC sensor Outside temperature C Measurement tolerance 10 Resistance Ω 20 2 392 16 2 088 12 1 811 8 1 562 4 1 342 0 1 149 4 984 8 842 10 781 15 642 20 528 25 436 Table 5 Temperature C Measurement tolerance 10 Resistance Ω 20 14 772 25 11 981 30 9 786 35 8 047 40 6 653 45 5 523 50 4 608 55 3 856 60 3 243 65 2 744 70 2 332 75 1 990 80 1 704 85 1 464 90 1 262 95 1 093 100 950 Table 6 ...

Page 98: ... 161 Link 226 Fan 300 Code plug 302 Earth connection 310 Temperature control for hot water 312 Fuse slow T 1 6 A 313 Fuse slow T 0 5 A 317 Digital display 328 Terminal block for AC 230 V Mains supply 328 1 Link 363 Indicator lamp for burner 364 Indicator lamp for power supply 365 Chimney sweep button 366 Service button 367 ECO button 400 Textdisplay 422 Connecting TR2 6 9 32 33 36 52 1 52 56 61 23...

Page 99: ...8 Conversion kit G31 G20 7 710 239 088 ZSBR 11 28 Conversion kit G20 G31 7 710 149 053 ZBR 8 35 Conversion kit G31 G20 7 710 239 089 ZBR 11 35 Conversion kit G20 G31 7 710 149 046 ZWBR 7 28 Conversion kit G31 G20 7 710 239 082 ZWBR 11 35 Conversion kit G20 G31 7 710 149 047 ZWBR 11 35 Conversion kit G31 G20 7 710 239 083 ZWBR 14 35 Table 7 Heat exchanger Temperature lim iter STB 8 729 000 144 110 ...

Page 100: ...th good corrosion inhibiting properties 20 40 Fernox Alphi 11 Anti freeze fluid with corrosion inhibitor also suit able for aluminium BASF Glythermin NF Anti freeze fluid based on ethylene glycol with good corrosion inhibiting properties also suitable for aluminium 20 62 Corrosion inhibitor Schilling Chemie Varidos KK Corrosion inhibitor 0 5 Schilling Chemie Varidos 1 1 Corrosion inhibitor 1 2 Sch...

Page 101: ... long periods of time In order to limit the damage the source of the contami nation must be located and sealed off If this is not pos sible the combustion air must be brought to the appliance from an unaffected area Halogens can occur in the following areas Industrial sources Dry cleaners Trichloroethylene tetrachlo roethylene fluorinated hydro carbons Degreasing baths Perchloroethylene trichlo ro...

Page 102: ...7 181 465 347 01 07 50 Appendix ...

Page 103: ...7 181 465 347 01 07 Appendix 51 ...

Page 104: ...Appendix ...

Page 105: ... combi Condensing boiler RD 430i system Condensing boiler 6 720 610 598 00 2O ZWBR 7 32 RD 532i GC Number 47 108 10 ZWBR 11 37 RD 537i GC Number 47 108 11 ZWBR 11 42 RD 542i GC Number 47 108 12 System boiler 7 30 RD 430i GC Number 41 108 06 6 720 610 604 GB 03 06 OSW ...

Page 106: ...g 15 3 5 Combination Boilers Setting Hot Water Temperature 16 3 6 System boiler with Storage Tank 17 3 7 Summer Mode Hot Water Only Combi Appliances 18 3 8 Frost protection Combi Appliances 19 3 9 Fault Condition 19 4 Text Display 20 4 1 General Description 20 4 2 Programming 20 4 2 1 Deleting a setting 23 4 2 2 Resetting all parameters to their original settings 23 4 3 Menu structure 24 4 4 Setti...

Page 107: ...ediately System models 31 4 7 i Info 32 4 8 Settings 33 4 8 1 Heating if TR 2 is connected 33 4 8 2 Hot Water Storage Tank System boiler models only 33 4 8 3 Service 33 4 9 Individual timer programmes 36 5 Fault finding 37 6 Tips on saving energy 38 7 General Information 39 8 Maintaining your appliance 40 9 Service 40 10 Fault or breakdown 41 11 Your guarantee 42 12 Guarantee registration 43 13 Op...

Page 108: ...e And it s backed up by British Gas Offering a complete mainte nance scheme to keep your boiler operating at peak condition and efficiency No wonder that more and more people are agreeing that when it is gas it has to be a British Gas Scottish Gas Condensing appli ance Benchmark The Benchmark initiative is the new code of practice to encour age the correct installation commissioning and servicing ...

Page 109: ...oors and windows B Do not operate any electrical switches B Do not smoke B Extinguish any naked flames B Call your gas company If you smell fumes from the appliance B Switch off appliance B Open windows and doors B Inform your heating engineer Fitting and modifications B Fitting of the appliance or any modifications to the appliance may only be carried out by a competent person B Flue systems must...

Page 110: ... no potential hazard due to the appliance being electri cally unsafe B There are no substances used in the construction that are a potential hazard in relation to the COSHH Regulations Con trol of Substances Hazardous to Health Regulations 1988 Ventilation Air Ambient Air B Keep ventilation air ambient air free of corrosive substances e g halogenated hydrocarbons which contain chlorine or flu orin...

Page 111: ... being heated at an even rate If the top of a radiator is at a lower temperature than the bottom then it should be vented by releasing air through the venting screw at the top of the radiator Ask your installer to show you how this is done Repeated venting will reduce the quantity of water in the system and this must be replenished for safe and satisfactory operation of the appliance Should water ...

Page 112: ...nces Thermostatic radiator valves It is recommended that this type of valve is fitted to all the radiators except one usually the radiator where the room temperature con troller is fitted They should conform to the requirements of BS2767 10 Showers bidets taps and mixing valves Combination Boilers Standard hot and cold taps and mixing valves must be suitable for operating at mains pressure Thermos...

Page 113: ...ce will still operate in the central heating mode Use in hard water areas Combination Boilers In exceptionally hard water areas a device to prevent scale forma tion may be fitted Installation of a scale inhibitor assembly should be in accordance with the requirements of the local water com pany An isolating valve should be fitted to allow for servicing Alternatively the maximum temperature of the ...

Page 114: ... 604 GB 03 06 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 ...

Page 115: ... and return 171 Hot water 172 Gas isolation valve open 173 Cold water inlet 295 Identification sticker 310 Hot water temperature control 317 Display 363 Indicator lamp for burner on 364 Indicator lamp for off on 365 Chimney sweep button 366 Service button 367 ECO button 400 Text Display 170 170 172 173 171 8 1 365 136 61 317 366 367 ECO 364 135 295 310 363 400 6 720 610 598 01 2O ...

Page 116: ...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 When handle is at right angles to direction of flow the valve is closed Fig 2 170 172 173 6 720 610 ...

Page 117: ...w 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 Fig 3 170 170 172 173 171 8 1 15 bar 0 1 2 3 4 6 720 610 598 03 2O ...

Page 118: ...ures that the condensation trap is filled after the appliance has been installed or after the appliance has been out of use for a long period For that reason the appli ance remains at minimum heating output for 15 minutes Switching off B Switch off the appliance at the master switch 0 The green indicator lamp goes out The optional timer will con tinue running until the emergency supply is exhauste...

Page 119: ...tting E approx 75 C Max setting 88 C When the burner is lit the red indicator lamp is illuminated 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 Refer to the instructions with the control B Set the thermostatic radiator valves to the desired settings 6 720 610 333 05 1O ...

Page 120: ...ton By pressing and holding the ECO button until the display lights you can switch between Comfort mode and Economy mode Comfort mode button is not lit factory setting The appliance is held constantly at the set temperature This means that hot water is available almost instantaneously at the tap Consequently the appliance will switch on at intervals even if no hot water is being drawn Control Sett...

Page 121: ... 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 6 System boiler with Storage Tank B Set the hot water temperature by means of the temperature control on the appliance Fig 7 B Do not set the temperature higher than 60 C for normal operation B Only use temperatures of up to 70 C tempo rarily for ...

Page 122: ...de ECO mode button is lit In ECO mode the appliance switches between central heating mode and cylinder charging mode every 12 minutes 3 7 Summer Mode Hot Water Only Combi Appliances With room temperature controller B Turn temperature control on the appliance anti clockwise as far as the stop The central heating is now turned off The hot water function and the mains power supply for the heating pro...

Page 123: ...kely event of a fault occuring while the appliance is in operation The display and the text display then shows a fault code and the button may also flash If the button flashes B Press and hold the button until the display shows The appliance will then start up again and the display will show the central heating flow temperature If the button does not flash B Switch the appliance off and then on ag...

Page 124: ...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 Fig 8 Controls a Display b Up More button c Down Less button d Back button e Next button f Delete button The standard display shows the following information Time Room temperature i...

Page 125: ...erating modes may be displayed during commis sioning 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 g The display lighting switches on and the main menu is dis played Fig 9 Main menu B Use the or button to move the cursor arrow on the left of the menu so that it points to the desired menu item In...

Page 126: ...Time day B Confirm the selection by pressing the button The corresponding submenu is displayed Fig 11 Setting the hour When settings are being entered the setting to be altered is indi cated on the top line In addition the setting being altered is dis played with a dark background B Use the or button to set the hour Press and release to change the display by one unit at a time Press and hold to ch...

Page 127: ... other buttons for 15 minutes 4 2 1 Deleting a setting Either overwrite the setting or press the button to delete it B Find the setting to be deleted B Press and release the button The display shows 4 2 2 Resetting all parameters to their original settings B Press and hold the button for more than 15 seconds After about 5 seconds the following message appears on the display ATTENTION Delete all pa...

Page 128: ...days Days holiday 25 Heating Heating program Day 1st operating mode 1st switching point 6th switching point 27 Set econ omy temp if TR2 is connected 5 30 C 28 Manual if TR2 is not con nected Automatic Constant on comfort Constant off economy 29 Hot water Hot water program Day 1st operating mode 1st switching point 6th switching point 31 Hot water immediately Off On 31 Info 32 ...

Page 129: ...t Holidays B Enter the number of days holiday by pressing or max 99 days holiday After the set number of days the text display module automat Settings Heating Optimum Start Off On 33 Hot water System boiler mod els Only charging times times and temperatures 30 Service Display service param 33 Further options Language English Français Deutsch 34 Time correction LCD contrast 34 34 Operating times 34...

Page 130: ... mode early B In the Holidays submenu Press the button until the display shows 0 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 in clude the day on which you are returning if you don t want the heating to return to the normal pro gram on that day C ...

Page 131: ...urday and Sunday Different times for every day Setting switching times and operating mode B From the main menu select Heating and then from the first submenu select Heating program B Select Monday Friday Saturday and Sunday or an individual day of the week Monday Friday to have Heating and Economy or Frost protection switching on at the same times every weekday Saturday Sunday to have Heating and ...

Page 132: ...do not wish to change can be skipped by pressing 4 5 2 Setting the Economy temperature if TR2 is con nected 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...

Page 133: ...nstant on comfort and Constant off economy The manually selected operating mode starts immediately Constant off economy and Constant on comfort are auto matically reset at 00 00 midnight To cancel the manually selected operating mode select the relevant menu and then press the button or select a different operating mode or set Holiday B From the main menu select Heating and then from the first sub...

Page 134: ...e 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 pro vide 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 set tings 60 C from 5 00 am 10 C from 10 00 pm ...

Page 135: ...ocked 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 Comfort mode is active for 2 hours normal automatic pro gram Hot water mode according to timer programme entered B From the main menu select Hot water and then from the first sub...

Page 136: ...l for CH flow Actual flow temp Actual CH flow temperature Required flow temp Required CH flow temperature Max HW temp Maximum permissible hot water out flow temperature Required HW temp Required hot water temperature Actual HW temp Actual hot water outflow temperature Storage Tank charge released or blocked Shows if hot water is released or blocked Storage Tank charge on or off or Storage Tank cha...

Page 137: ...se up to six different times with temperatures see page 30 Hot water Only times During that times the Storage Tank will be charged to the choosed temperature B From the main menu select Settings and from the first sub menu select hot water B Press or to switch Times and temperatures or only times 4 8 3 Service Displaying service functions This option displays various current settings and statuses ...

Page 138: ...ection LCD contrast Time correction B Press and hold the button about 5 seconds until the display shows Time correction and LCD contrast B Press or to select Time correction B Press the button The display shows Change value B Press or to set the number of seconds in 24 hours Basic setting 0 s LCD contrast B Press and hold the button about 5 seconds until the display shows Time correction and LCD c...

Page 139: ...d submenu select Operating times Fault history This option displays any faults that have occurred for the informa tion of the service engineer The first fault displayed may still be active Any other faults displayed are no longer active 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 Fault h...

Page 140: ... Operating mode Time Operating mode Time Operating mode Time Operating mode Time Monday Tuesday Wednesday Thursday Friday Saturday Sunday Enable disable hot water function Switching point 1 2 3 4 5 6 Status Operating mode Time Operating mode Time Operating mode Time Operating mode Time Operating mode Time Operating mode Time Monday Tuesday Wednesday Thursday Friday Saturday Sunday ...

Page 141: ...tem Desired room temperature exceeded by large amount Radiators are too hot Turn down ther mostatic valves Temperature rises instead of falling Clock is incor rectly set Check setting Room tempera ture too high in Economy mode Building retains heat well Start Economy mode sooner No display or dis play unit does not respond Momentary power failure Switch off appli ance at master switch wait a few s...

Page 142: ...hermostatic radiator valves The central heating control on the boiler should be set to the max imum rated temperature of the central heating system or to posi tion E when the maximum central heating water temperature obtained is 75 C The temperature can be set individually in each room except pri mary room with the room thermostat using the thermostatic radi ator valves If you wish to have a lower...

Page 143: ...ns please contact your installer or write to us 7 General Information Cleaning the Outer Case Wipe down the outer case with a damp cloth Do not use abrasive or caustic cleaning agents Appliance details If you ever need to call Customer Service it helps us a great deal if you can provide precise details of your appliance The information is printed on the appliance identification plate sticker see p...

Page 144: ...ife and to ensure it con tinues to operate at peak efficiency and performance it is essen tial that your boiler receives regular competent servicing and maintenance checks beyond the initial 2 year guarantee period To arrange for a British Gas three star cover agreement please call 0845 9 60 50 40 9 Service If your RD 532i RD 537i RD 542i RD 430i appliance should fail to operate correctly or requi...

Page 145: ...s OR Our Field Service Engineer finds no fault with the appliance see NOTE OR The cause of breakdown is misuse or with other parts of your plumbing heating system or with equipment not supplied by Worcester NOTE No appliance fault is found on over 30 of all service call outs If in doubt contact our British Gas on 0845 9 60 50 40 IN THE EVENT OF AN APPLIANCE FAULT OR BREAKDOWN please contact your S...

Page 146: ... first 2 year service has been carried out to the satisfaction of Worcester Heat Systems Limited when requested That any product or part thereof returned for servicing under the guarantee any components of the unit which are proved to be faulty guarantee must be accompanied by a claim stating the Model Serial Number Date of Installation That Worcester Heat Systems Limited will not accept respon si...

Page 147: ...ce and will assist us in maintaining an effective and efficient customer service by establishing a refer ence and permanent record for your boiler This will not affect your statutory rights in any way Important For your own record Model Serial number See identity label inside appliance casing Type size Date of installation Check that the Benchmark log book has been completed by your installer or s...

Page 148: ...lay Set switching times and operating mode within the text display Hot water temperaeture Combi nation boiler only ECO button lit Economy mode ECO button not lit Comfort mode Fault Condition Refer to page 19 Switching off 6 720 610 333 04 1O 6 720 610 333 05 1O 6 720 610 333 07 1O 6 720 610 333 11 1O ...

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British Gas ICC2 combi ZWBR 11-37 ICC2, Installation And Servicing Instructions

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