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Atmos Energy INTERCOMBI HE32 User's Manual

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1. weather Notes compensation 1 Under no circumstances must any electrical option power be input to the room thermostat terminals It is a volt free switch Care must also be taken to avoid induced voltages caused by the running of the thermostat or sensor cables along side mains voltage cables For systems requiring an external hot water On Off switch please consult Atmos 5 4 2 Volt free Room thermostat on off 1 Connect the room thermostat See 5 4 1 2 The terminal block for the connection for a volt free room thermostat or time clock is X4 on the control panel The terminals are wired to the input circuit of the control unit which has its own 24V dc wetting voltage If using a room thermostat with heat accelerator this must be set at O 1A The maximum permissible resistance of the room thermostat circuit and cable is 15 Ohms 5 Where a wireless room thermostat is employed consult the manufacturer s instructions for installation SS 23 5 4 3 Outside temperature sensor Weather compensation option The appliance has a connection for an outside temperature sensor The outside temperature sensor can be applied in combination with an on off room thermostat or time clock If not using either of these a wire link must be made across X4 6 amp 7 or X2 1 amp 3 to give continuous operation Preferably the outside sensor should be mounted on a North facing wall It should not be located where it migh
2. Connect the appliance gas valve to the gas pipe Check the boilers data plate to ensure that the appliance has been set for the correct gas supplv The boiler is supplied for Natural Gas G20 A propane G31 gas conversion set is available and an appropriate sticker is included see 7 7 The meter governor should deliver a dvnamic pressure of Ombar for natural gas or 37mbar for propane To prevent the ingress of foreign matter and possible damage to the gas regulating block the gas supply pipe must be checked for contaminants prior to connection to the boiler Install a gas filter if necessary On final connection of the gas supply to the boiler the complete gas installation including the meter must be tested for gas tightness and purged as described in BS6891 Electrical connection CAUTION The appliance requires a 230 V ac 50 Hz mains supply and must be earthed and connected via a double pole isolating switch fitted with a 3 amp fuse The switch must be readily accessible within 1m of the appliance and provide complete electrical isolation for the boiler and control system The appliance is supplied factory wired complete with 1 m of mains cable All electrical connections to the mains supply must be made in full accordance with the current I E E regulations BS 7671 Isolate the supply by opening the double pole switch when carrying out maintenance activities Remove the optional pipework cover forwards U
3. InterCombi Installation amp Servicing Instructions for HE32 GC 47 249 01 Atmos Heating Svstems West March Daventrv Northants NNII 4SA Tel 01327 871990 Fax 01327 871905 e mail sales cCatmos uk com internet www atmos uk com Issue 22 01 10 Main revision 2010 Atmos Heating Systems The information provided applies to the product in the standard model Atmos Heating Systems can therefore not be held liable for any damage resulting from the product specifications that deviate from the standard model The information provided has been compiled with the utmost care However Atmos Heating Systems cannot be held liable for any faults in the information nor for the consequences thereof Atmos Heating Systems cannot be held liable for any damage resulting from the activities carried out by third parties To be changed without prior notice Building Regulations and the Benchmark Checklist Building Regulations England amp Wales require notification of the installation of a heating appliance in a dwelling to the relevant Local Authority Building Control Dept This can be achieved via a Competent Persons Self Certification Scheme as an option to notifying the Local Authority directly Similar arrangements apply in Scotland and Northern Ireland Atmos Heating Systems is a member of the Benchmark Scheme and the Benchmark Checklist is included at the back of these Instructions The Benchmark Checklist provides a Commission
4. All installations in England and Wales must be notified to Local Authorty Building Control LAB either directly or through a Competent Persons Scheme A Building Regulations Compliance Certificate will then be issued to the customer TIT WI a T PAE TEE TE dt en es EL FEECH DE BE HA AED HoT a TE Heating and Hotwater Industry Council HHIC www centralheating co uk SERVICE RECORD It is recommended that your heating system is serviced regularly and that the appropriate Service Record is completed service Provider Before completing the appropriate Service Record below please ensure you have carried out the service as described in the manufacturer s instructions Always use the manufacturer s specified spare part when replacing controls SERVICE 1 Date Energy Efficiency Checklist completed Yes Nol Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 3 Date Energy Efficiency Checklist completed Yes Ho DA Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 5 Date Energy Efficiency Checklist completed Yes Mo Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 7 Date Energy Efficiency Checklist completed Yes Mo Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 9 Date Ener
5. aaa a Burner controller Display Notes F1 5x20mm anti surge fuse 2A 2 230Vac stat circuit Available for room stat 1 etc The switched live can also be used for S plan or Y plan circuits note that the 230Vac live to the Wiring Centre must come from the same fused spur as the 230Vac supply to the boiler 3 OpenTherm When using an OpenTherm thermostat 4 the link 4 5 must be removed and 6 7 not used For systems requiring an external hot water On Off switch please consult Atmos 55 11 CE DECLARATION Declaration of conformity according to ISO IEC GUIDE 22 Manufacturer Atmos Heating Systems Address West March DAVENTRY Northants NN11 4SA Hereby declares that the application Atmos Type InterCombi HE32 Meets the stipulations of the following directives Machine directive 89 392 EC as amended in directive 93 68 EC Low voltage directive 73 23 EC as amended in directive 93 68 EC Directive concerning gas appliances 90 396 EEG Boilers Efficiency Directive for new oil and gas fired central heating boilers 92 42 EC e EMC Directive 89 336 EC as most recently amended in directive 93 68 EC Daventry 5 January 2010 J A Thomason BSc Eng Director 56 GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appr
6. negate the need to use a void or enclosure as a route for the flue system Where this is not possible the following applies CORGI have issued a Guidance Document on the safe installation of flue systems within a dwelling This is a Technical Bulletin reference TB200 and can be downloaded from the internet In brief this requires the air flue system to be accessible for visual inspection by a service engineer Particular concern focuses on the joints supports material and correct slope of the flue installation which should all be in accord with the instructions given in this document and with good practice We recommend that the guidance given in this document is adhered to especially in the case of twin pipe flue systems 5 6 Flue discharge and air supply A number of different flue systems are available from Atmos for use with this appliance e 60 100mm concentric system comprising a standard through the wall flue kit or an extended system e 80 125mm concentric system e 80mm aluminium twin pipe system e 80mm PPS plastic twin pipe system The twin pipe systems enable separate air intake and flue pipes to be fitted to the appliance Maximum lengths are specified in 5 6 2 5 6 4 and 5 6 6 and must not be exceeded Other special flue arrangements covering Prefabricated Chimneys and Multi Storey flue systems are included in 5 7 to 5 9 5 6 1 60 100mm Concentric Standard through the wall Horizontal Terminal
7. using the screws and plugs supplied 2 Mount the appliance 4 5 2 Fitting the mounting strip and the mounting bracket 1 Fasten the mounting strip and the pipe mounting bracket horizontally to the wall according to the drilling pattern using the screws and plugs supplied 4 5 3 Fitting the rear mounting frame 1 Fasten the frame vertically to the wall using screws and plugs 2 Fasten the optional pipe mounting bracket to the frame using the fixings supplied Caution The appliance is wider than the frame by 20mm 17 4 5 4 Installation connections 1 Make the various connections to the valves see diagram 2 Installa filling loop not supplied between the cold water inlet pipe and the CH return connection 3 For most installations the flexible tube for the safety discharge will be long enough to fit into the condensate discharge waste pipe see below In cases where this does not apply install a 15 mm copper safety discharge pipe to fit into the waste pipe as shown in the diagram 5 1 or run separately to a safe discharge position on the outside wall of the building Note Where appropriate and always in areas of Hard Water hardness in excess of 200ppm an approved water conditioner device must be fitted in accordance with the Building Regulations Atmos can supply a suitable conditioner for fitting to the cold feed of the boiler In areas of hard water failure to fit a suitable conditioner w
8. A Not applicable InterCombi HE32 Pump position 1 2 Pump position 2 Pump position 3 Flow through in litres hr 1 Pressure loss pump lift in metres head lt x 7 wP 0 500 1000 1500 2000 X Flow litres hr 40 7 6 When the outside sensor is connected the supply temperature is automatically controlled dependent on the outside temperature in Weather dependent control accordance with the set control line The T set CH CH supply temperature is set via the temperature display If required the control line can be adjusted by the service code See 7 3 X T outside C T T supply C A factory setting B example 7 1 Conversion to other gas tvpe CAUTION When the appliance is connected to another gas type than the type for which the manufacturer has set the appliance the gas setting ring must be replaced Conversion sets for other gas types can be ordered Activities on the gas containing parts should only be executed by a qualified registered installer Conversion of the gas setting ring if 2 9 4 oi 7 8 The gas air control is set in the factory and normally does not need any Switch off the electrical supply to the appliance Close the gas tap Remove the front cover of the appliance Disconnect the coupling 1 above the gas valve and turn the gas mixing pipe 2 backwards Replace the O ring 3
9. At this stage set the maximum power on the service panel See Setting of maximum power If necessary change the pump position and or the radiator valves The minimum flow through is e 200 l h at a set power of 7 0 kW e 750 l h at a set power of 26 2 kW 7 Switch off the electrical supply to the appliance 8 De aerate the appliance and the system after cooling down fill up if necessary 9 Check the heating system and the hot water supply for proper operation 10 Instruct the User about filling de aerating and the operation of the heating system and the hot water supply Remarks 36 The appliance has been provided with an electronic controller that ignites the flame and continuously monitors this at each heat demand from the heating system or from the hot water supply The circulation pump starts running at each heat demand of the boiler The pump has an overrun time of 1 minute The overrun time can be changed if necessary See Installer settings The controller will automatically run the pump for 10 seconds once every 24 hours to prevent it from getting stuck This activation of the pump takes place at the time of the last heat demand 24hrs later In order to change this time set the room thermostat higher for a while at the desired time The pump does not run for hot water supply Step modulation is set to function factory setting so that the power speed is increased gradually from the minimum parameter c This provides
10. CH Possible causes Remedies Room thermostat weather dependent 1 Check the wiring control not closed or faulty gt Yes 2 Replace the thermostat 3 Replace the weather dependent control Lb No No voltage 24 V 1 Check the wiring according to the diagram 2 Check the connector x4 3 Replace defective controller Pump does not run 1 Check the voltage CD Yes 2 Check the connector x4 3 Replace defective pump 4 Replace defective controller Jt No Burner does not operate on CH gt Yes 1 Replace sensor S1 or S2 Sensor S1 or S2 faulty See Fault code display 1 or 2 IL No Burner does not ignite gt Yes 1 See Burner does not ignite 46 8 5 Reduced output Possible causes Remedies At high speed the power has decreased 1 Check appliance and flue system by not more than 5 gt Yes for pollution 2 Clean appliance and flue system 8 6 CH does not reach the correct temperature Possible causes Remedies Room thermostat settings not correct 1 1 Check the setting and adjust if gt Yes necessary set to 0 1 A Temperature set too low 1 Raise the CH temperature see CH operation 2 Check the outside sensor for short circuit remedy this I Pump does not run well gt Yes 1 1 Raise the pump setting or replace Pump setting too low the pump IL No No circulation in the system 1 1 C
11. and gently clean any deposits As the spark gap cannot be checked directly use a flat surface across the corner of the heat exchanger to measure the distance to the probe See the ii aan jj Condensate i diagram in 8 2 The distance should be in the range 27 to 29mm o EERS iia pi Replace the probe if necessary Remove the baffles that have been placed crosswise in the fins of the heat exchanger If necessary clean the baffles and the fins of the heat exchanger from top to bottom with a brush or with compressed air If necessary clean the bottom side of the heat exchanger and the condensate discharge at the bottom of the flue discharge behind the heat exchanger Reassemble the baffles in the heat exchanger Check the silicone gasket of the front cover for damage hair cracks and or discolouring and replace if necessary Mount the front cover to the heat exchanger and attach this with the socket screws with spring washers Crosswise tighten the socket screws evenly by hand Using an Allen key tighten the screws so that the front j Bumer cover is closed onto the heat exchanger all round the edge and then i steel mesh tighten up approx 1 8th turn kl Sii Make sure that the silicon gasket is well placed around the front cover 4 me Reconnect the gas union below the gas valve Check the sealing ring for damage and replace if necessarv Fit the connector on the fan and the ignition block on the gas valve 49 Open the gas t
12. and ignition of the burner follows code 14 and the controller goes to domestic hot water operation code Is When a domestic hot water demand is detected during a CH demand the CH demand is interrupted pump stops and the controller switches from CH code 5 to DHW code S When after ending the domestic hot water demand the CH demand is still required the pump starts again and the controller switches back to CH During domestic hot water operation the fan speed and hence the power of the appliance is controlled by the controller on the basis of the set domestic hot water temperatures The demanded temperature is displayed on the operating panel During domestic hot water operation the actual domestic hot water supply temperature can be read by pressing the service button Keep Hot Facility For a quick supply of domestic hot water a Keep hot function has been provided in the controller This function keeps the heat exchanger at the correct temperature This Keep hot function has the following settings e Off HW Store Both LED s off The heat exchanger is not kept warm delaying the supply of domestic hot water except when CH operation has recently occurred e On HW Store On LED on The Keep hot function of the appliance is continuously activated The appliance always supplies domestic hot water immediately e Eco HW Store Eco LED on The Keep hot function is self learning The appliance is inactivated during
13. and the gas setting ring 4 by the rings of the conversion set Reassemble in reverse order Open the gas tap Check the gas connections for tightness leaks Switch on the electrical supply to the appliance Change the parameters d and F to the values given in the table Now check the setting of the gas air ratio See below Attach a sticker of the set gas type over the existing sticker on the gas mixing pipe 2 Apply a sticker of the set gas type at the appliance plate Remount the front cover of the appliance Gas air control adjustment The setting can be checked by measuring the CO percentage in the flues or by measuring the pressure difference T supply C A 90 T max 80 70 A 60 F 9 N X 50 x kN 40 N RA 20 10 gt 0 30 20 10 0 10 20 30 X gt T outside C 41 In case of any alterations replacement of the gas valve or conversion to another gas type the control must be checked and reset if necessary according to the table below CO2 at low position L service and CO2 at high position H service and 8 8 9 2 Gas inlet pressure dvnamic mBar 17 25 25 45 Gas inlet pressure static mBar Gas setting ring diameter mm Minimum speed 90 of max 40 parameter d Min starting speed 90 of max parameter F Note See also 7 3 Parameters parameter c is default 40 7 9 Settinggas air control Setting by
14. in accordance with the manufacturer s instructions in order to comply with the Building Regs To demonstrate compliance the Benchmark Checklist located at the back of this Manual should be completed and signed at the time of commissioning and left with the customer Failure to flush and add inhibitor to the system will invalidate the Appliance Warranty 35 6 2 IO tw 6 an O ATMOS e e ee L e on off temperature hw store After having carried out the above operations the appliance can be commissioned 1 Commissioning of the appliance Switch on the electrical supply to the appliance The appliance may carry out a self test as determined by the controller 2 on service display After completing the self test a horizontal mark will appear in the service display BA 2 Press the on off button in order to put the appliance into operation The boiler is heated and on the service display appear al 4 al 3 Set the pump position on the basis of the set maximum power and the resistance of the system on the water side For the head of the pump and the pressure loss of the appliance see 7 5 4 Set the room thermostat higher than the room temperature The appliance will now switch to CH operation on service display 5 Heat the system and the appliance to about 80 C 6 Check the temperature difference between the supply and return of the appliance and the radiators This should be about 20 C
15. invoice or 12 months from date of installation whichever is the later The warranty shall be 2 years for replacement parts and associated labour thereafter any warranty period shall cover parts only The heat exchanger warranty is 10 years in total including the first two years parts and labour warranty For purchases before 01 01 08 this extended period was 5 years We guaranty the free redelivery of parts covered by the warranty Any alleged faulty part must be returned to Atmos carriage prepaid Carriage will be credited if the part is found to be manufacturer s fault Any claim must be accompanied with the serial number of the product All products must be used in an appropriate application and manner This includes but is not limited to correct boiler sizing system design system cleansing and use of corrosion inhibitors Where appropriate and always in areas of hard water in excess of 200 ppm an approved water conditioner device must be fitted in accordance with Building Regulations Completion of the Benchmark Checklist amp Service Record is a condition of the boiler warranty Customer s statutory rights not affected which must be completed and supplied to Atmos if required The Warranty card must be completed and the signed Atmos copy received within 8 days of installation By signing the Warranty card the buyer agrees that the goods have been delivered in a satisfactory condition Exceptions T 10 11 I
16. j j F 4 ku a Be LI F i B Fi tai 1 i iy j A A a i t LI l LI ji 9 2 11 Pump head Disconnect the pump wires from the controller see note in 9 2 1 Undo two Allen bolts on the Wilo pump head alternative pump Grundfos has 4 Allen bolts to remove the pump head from the body Fit replacement pump head in reverse order The pump must be vented via its vent plug after refilling the appliance 9 2 12 Expansion vessel Unscrew the flexible hose connection making sure that the sealing ring is not damaged Unclip the bracket holding the vessel and fit replacement including the sealing ring Using the Schroeder valve on the expansion vessel and pump if required check the pressure is 1 bar 53 10 TECHNICAL SPECIFICATIONS Appliance category B13 B33 C13 C 33 C 43 C53 C63 C83 Gas inlet pressure 20 mbar Suitable for gas Technical data InterCombi HE 32 Domestic hot water Heat power input net kW Domestic hot water flow rate 60 C AT 50 C l min 9 MM KT KT IT Domestic hot water flow rate 45 C AT 35 C min 129 MI mA MM MA Domestic hot water flow rate 40 C AT 30 C min Max domestic hot water temperature setting eC Max DHW water pressure bar PB Heat power input net kW Max CHwatertemperature O C J90 S Consumed power full load W KA FI AN ma gt _ gt I GMT Overall dimensions and weight mm kg Depth Weight 39 The ma
17. not need extension see diagram ie Equivalent length of supply pipe Equivalent length of flue discharge pipe Note Includes an allowance for the terminal ie the terminal can be ignored from the equivalent length 80mm components Equivalent length M Remarks sited L B 3 0 8 0bend 30 5 6 7 Plastic twin pipe flue systems NOTE Consult Atmos for these systems Use of non approved flue systems will invalidate the guarantee For special applications the appliance can be used with plastic flue pipes which are available from Atmos as follows PPS This is a rigid translucent plastic pipe in 60mm and 80mm diameters together with a range of fittings This is suitable for continuous use at 120 C and is therefore suitable for connection from the appliance to the flue terminal This must include the 80mm PPS pipe with flue gas test point which is required for commissioning of the boiler PPS Flexible This is a flexible pipe 80mm diameter which can be used for chimney linings or for difficult vertical runs Note that it must only be used vertically and MUST NOT be used for horizontal runs because the condensate will accumulate and could block the flue path Plastic combustion air inlet systems All plastic pipes can be used for air inlet The pipe does not need to slope since there is no condensate NOTE In longer runs of 80mm plastic flue pipe 3m long or longer it is advisable to fit a condensate drain in the flue pi
18. the best CH operation However if the appliance is being used only for heating an indirect hot water tank or for heating fan convectors the step modulation can be turned off The appliance will then start almost immediately at the maximum setting and the system will heat up faster service reset pressure 6 3 System Shutdown CAUTION Drain the appliance and the system when the mains voltage has been disconnected and there is a chance of freezing Drain the appliance using the drain tap Drain the system at the lowest point Close the main valve for the cold water supply to the boiler Drain the appliance by disconnecting the domestic hot water connections underneath the appliance or opening hot water taps 2 oe d 6 3 1 Frost protection e In order to avoid freezing of the condensate discharge pipe the appliance should be installed in a frost free room e In order to avoid freezing of the appliance heat exchanger it has an appliance frost protection When the temperature of the heat exchanger drops to 5 C the burner will be activated and the pump will start running until the temperature of the heat exchanger reaches10 C e When the system or a part thereof can freeze a frost thermostat should be installed in the area to be protected Connect this according to the wiring diagram See 10 1 Note The external frost thermostat is not active when the appliance has been switched off at the ope
19. A l IP 8 Pe OD GVANON a ki 8 293 NODS TAMING COMAINC INS a ita rt 8 A MOT A Er pe e eee 10 75 5 A L NOG ANN e EE E AE E AA E E A vin AE EE O vin EE A E EE OA A A 11 3 Main Components 12 A AC SONGS ii dan 13 4 Installation 14 tal overall dlinen sjoni an a Aide tab ianiti 14 42 VGA me OAC age e i de te cas ats da ap devtedioee due tesagedety sada eede sav etadenentennts 15 4 3 Additional dimensions scisicscivnsasivscevocanteasasenesinnsusteesivusasivdcanssantegciersddinideneiantaeddeeddanadantseatasdsieddandtanieyedenraiibendanndssaneess 15 AA BOEI CION sna E AE ARE EA AAE EAA AE AER 16 4 5 Mounting and General Information cccccssssssssssssssssssssssssssssssssessessessessessessessessesseseassassessassassassassaseuseaseaseaseasens 17 4 6 Mount me appllante sse R e ninni ietiaai u elena 18 4 7 Fitthepipework cover optional item s ssssnnnnznzznnznnznnznninninninniniinitnzinztnzinztnzttittitnittztnztnzinztnzttzttzznztazznzznzznzznzzaz 18 4 8 Condensate disposti eee 19 5 Connections 20 5 1 Connect the CH system itre et tieka tina tinten tii a 20 D2 Ol WalersySleMm 102d nnsncunncsacanncanacacacanncanacenananncananeranannsananesasamenunes 21 53 Connecuna the Qas SUPDIY na E 22 24 BIE Gal 00 82 67 9 8 dao ea ea eee 22 ao General FMS REQUINGIN GINS xxi sigar a ka 25 5 6 Flue discharge and air supply ccceccessesssssssssssssrssessrssesesseseeseeseeseeserseeseeseeseeseeseesaeseeseeseeseeserseeserseesensense
20. IMPORTANT Using the concentric adapter set see photo the standard two pipe connection can be changed into a concentric connection 1 Seal the open air supply connections in the appliance with the sealing cap delivered with the set item C in photo 2 Remove the sealing ring around the flue discharge in the appliance as shown below 3 In its place fit the sealing ring 116 x 110 mm item B in photo 4 Fit the adapter item A in photo on the flue discharge Remove this sealing ring for concentric connection 26 Mounting 60 100mm horizontal concentric terminal 1 Drill hole of diameter 110 mm or larger hole 2 Cut the terminal to the length required 3 Slide the terminal into the opening and fit rosettes to cover the opening 4 Ensure the pipes slope back to the appliance An alternative telescopic 60 100 horizontal concentric terminal is available from Atmos The flue should be adjusted to length and the supplied sealing tape applied NOTE Atmos also provide anti plume kits for use with the telescopic flue system Note Mark centre of hole on wall at 100mm above the top of the boiler 5 6 2 60 100mm Concentric extended flue system Refer to the Atmos Price List for the full list of flue components BOs100mm straight concentric a a alik ka a b sal ceed ced os ai gt 1 i i ee BOTO0mm concentic vertical flus examples EL IDOMM concentic honzantal flus ex
21. This overrun time is set to the value according to parameter 8 see 7 3 factory setting is 1 min This setting can be changed Note If there is a hot water demand during this period the overrun time is cancelled The controller will automatically run the pump for 10 seconds once every 24 hours to prevent it from getting stuck This activation of the pump takes place at the time of the last heat demand 24hrs later In order to change this time set the room thermostat higher for a while at the desired time i Required temperature reached The controller can temporarily block the heat demand and stop the burner This blocking takes place because the required temperature has been reached When the temperature has dropped sufficiently the blocking is cancelled Self test The controller regularly checks the connected sensors During the check the controller does not carry out any other tasks 13 Ventilate Fan On starting the fan is first brought to the starting speed When the starting speed has been reached the burner is ignited Code 3 jis also visible after stopping the burner when post purge takes place Ignite When the fan has reached the ignition speed the burner is ignited by means of electric spark ignition During ignition the code 4 appears If the burner is not ignited another ignition attempt is made after about 5 seconds If the burner has still not fired after the fourth ignition attempt the controller in
22. U U ix tu A 32 5 8 Atmos MS System Appliance category C53 individual vertical flue and separate horizontal air inlet CAUTION The air supply A in the outside wall must be provided with an Atmos inlet grid Flue terminals B can be individual or common terminals can be provided for groups of up to 6 flues Maximum pipe length See 5 6 5 The air supply pipes and flue discharge pipes should be 80mm Mounting of air supply horizontal The air supply A can be made at any place in the outside wall 3 Make an opening of diameter 90 mm at the place of the supply 4 Shorten the air supply pipe to the correct length out of the wall 5 Mount the Atmos inlet grid and attach this to the pipe 6 Slide the air supply pipe into the opening and cover the opening with a rosette if necessary Mounting flue terminal vertical 1 Mount a roof tile with shell in a pitched roof surface at the place of the outlet Mount an adhesive plate suitable for a double walled flue terminal diameter 80 mm outside diameter 96 mm in a flat roof 2 Slide the double walled flue terminal from the outside to the inside through the roof terminal The outlet must protrude at least 500 mm above the roof surface N N N N N N N N C L ML 7 7 ZF 7 7 A Z A L L L L Z ANONAONANI CWT ZZ DD LLL oara 33 5 9 Atmos Communal Flue System CFS A design service is provided for
23. Y plan circuits note that the 230Vac live to the Wiring Centre must come from the same fused spur as the 230Vac supply to the boiler FROST STAT Switched live from S plan or Y plan circuits see note 2 24 5 5 General Flue Requirements 5 5 1 Flue terminal clearances Boundary Directly below an opening window or 300mm other opening eg air brick Directly above an opening window or 300mm other opening eg air brick Horizontally to an opening window or 300mm other opening eg air brick Below gutters soil pipes or drain pipes 75mm 2 Below eaves 200mm 2 Below balconies or car port roof Not allowed From a vertical drain pipe or soil pipe 150mm 2 From an internal or external corner or to a 300mm boundary alongside the terminal Above ground roof or balcony level 300mm From a wall fence building or boundary 2500mm line facing the terminal From a terminal facing a terminal 2000mm From an opening in a car port eg door Not window into a dwelling allowed Vertically from a terminal on the same 1500mm wall Horizontally from a terminal on the same 300mm wall From a vertical structure on the roof 500mm Above intersection with roof 300mm NOTES 1 In addition the terminal should not be nearer than 150mm to an opening in the building fabric formed for the purpose of accommodating a built in element such as a window frame 2 Minimum distance is reduced to 25mm from a terminal guard 3 Ter
24. actory according to the parameters of 7 3 These parameters can only be changed with the service code Proceed as follows to activate the program memorv 1 Set the appliance in the off mode using the On Off button je on the service display Simultaneously press the Service and Reset buttons until a appears on the service and the temperature displays a Using the and buttons set 15 service code on the temperature display Use the Service button to set the required parameter on the service display Using the and buttons adjust the parameter to the required value on the temperature display After having entered all required changes press the Reset button until 7 appears on the service display until l I appears on the service display for appliances produced before Nov 07 7 sea on the appliance again using the On Off button The controller has now been reprogrammed Note By pressing the Temperature button the factory settings of the parameters are restored can only be done if the service code has been set oe Sie 38 7 3 Parameters Parameter Description seiting Note Appliances produced before Nov 07 had earlier version of HE 32 s w c not included and d minimum speed Service code 15 Access to installer settings The service code must be entered 15 Svstem tvpe 0 standard 1 heating only operation indirect hot water tank 2 hot water onl
25. adjusted to the heat demand In the aluminium heat exchanger two separate copper circuits have been integrated Because of the separated circuits for central heating and hot water the heating and the hot water supply can operate independently of each other The hot water supply has priority over the heating They cannot work simultaneously The appliance has been provided with an electronic controller that controls the fan with the heat demand from the heating system or the hot water supply opens the gas valve and ignites the burner continuously monitors the flame and controls it dependent on the power required 2 3 Operating conditions A code indicates the operating condition of the appliance on the service display of the operating panel Off The appliance is not operating but there is electrical power There is no response to any demand for hot domestic hot water or CH water The frost protection is active though This means that the pump starts running and the heat exchanger is heated when the temperature of the heat exchanger drops to 5 C When the frost protection is activated code 7 appears heating of the heat exchanger Waiting position The LED of the button and if necessary one of the LED s of the domestic hot water Keep hot function are on The appliance is ready for responding to the demand for CH or domestic hot water al Pump overrun After the operation of the CH the pump has an overrun
26. amples Table of Atmos 60 100mm concentric flue equivalent lengths Maximum equivalent concentric length allowed is 10 metres Note Includes an allowance for the terminal ie the terminal can be ignored from the equivalent length 60 100mm concentric components Equivalent concentric length M Remarks ard L I ooo 3 0 8 0bend 2 Remove this sealing ring for concentric connection 5 6 3 Vertical Concentric connection Straight adapters are available for either 60 100mm or 80 125mm systems IMPORTANT Using the concentric adapter set see photo the standard two pipe connection can be changed into a concentric connection 1 Seal the open air supply connections in the appliance with the sealing cap delivered with the set item C in photo 2 Remove the sealing ring around the flue discharge in the appliance as shown above 3 In its place fit the sealing ring 116 x 110 mm item B in photo 4 Fit the adapter item A in photo on the flue discharge 5 6 4 80 125mm Concentric flue system Refer to the Atmos Price List for the full list of flue components chimney flue HM 2 amp mm Concentria flue examples 28 80 125mm Concentric extension for balcony outlet When the free outlet is hindered by an eave balcony gallery or anything else the concentric terminal must be extended to at least the front side of the overhanging part see diagram Table of Atmos 80 125mm concentric fl
27. and service Note After servicing the Benchmark Checklist and Service Record located at the back Fit the front panel and replace the screws at the bottom of the appliance Check the CH system water pressure shown on the display which should be minimum 1 bar and maximum 2 bar for a cold system Check the pressure of the expansion vessel is 1 bar using a pump into the Schroeder valve if necessary Check the central heating system and the hot water supply for leaks and check the boiler controls and system for correct operation Check the corrosion inhibitor concentration level within the CH system topping up when necessary of this manual should be completed and signed and the manual left with the customer 50 9 2 COMPONENT REPLACEMENT 9 2 1 Preparation Switch off the appliance using the On Off button on the operating panel Switch off the electrical supply to the appliance Close the gas tap Unscrew the two recessed screws left and right at the front underneath the appliance and lift remove the front panel See photo in 4 4 3 Wait until the appliance and the burner have cooled down Note When removing cables wires to the controller the cable clamp must be released first by unscrewing 2 posidrive screws and the controller hinged down by unscrewing 2 posidrive screws as shown in diagram 5 4 9 2 2 Gas valve ignition block Note The gas valve is factory preset and therefore only Atmos or Appliances manu
28. ap and check the gas couplings below the gas valve and on the mounting bracket for leaks Switch on the electrical supply to the appliance Switch on the appliance using the On Off button on the operating panel Check the front cover and the connection of the fan to the front cover for leaks 9 1 3 Note for CFS systems with Non Return Valve flue gas When refitting the fan the NRV MUST be refitted see diagram Fold the silicon valve 1 of the NRV carefully into a U form Place the valve holder 1 2 into the hole of the front plate making sure the valve is placed in the correct position direction toward the front plate as shown Replace the fan seal back on the front plate and screw both nuts 4 tight making sure the valve stays in the right position 9 1 4 Checking the condensate discharge See the diagram in 4 6 Clean the condensate trap and the condensate discharge pipe After cleaning fill the trap with water 9 1 5 Inspect air supply flue gas discharge system Inspect the air supply flue discharge system throughout its entirety ensuring that it is in sound condition with no damage to the pipes or joints Inspect the terminals ensuring that they are clear and unobstructed 9 1 6 Checking the gas air control Check the gas air control as given in 7 9 and adjust as necessary 9 1 7 Check the CO CO ratio The CO CO2 ratio should be checked on each service See section 7 10 9 1 8 Completion of inspection
29. bi wall mounted gas heater and any accompanying accessories The manufacturer s instructions must NOT be taken as overriding statutory requirements The regulations are mentioned separately for the different disciplines 1 1 General The entire system should comply with the valid safety regulations as mentioned in This installation manual Gas Safety Installation and Use Regulations The appropriate Building Regulations Health and Safety Document No 635 Electricity at Work Regulations e The Water Fittings Regulations or local Water byelaws 1 2 CH system The entire system should comply with the valid safety regulations as mentioned in e BS 5449 Central Heating for Domestic Premises 1 3 Gas system The entire system should comply with the valid safety regulations as mentioned in e BS 6798 Specification for installation of gas fired hot water boilers of rated input not exceeding 60 kW e BS 6891 Installation of low pressure gas pipework installations up to 28mm R1 e 1 5 813 Installation of Gas Appliances for installations in Ireland e British Gas Guidance Notes for the Installation of Domestic Gas Boilers 1 4 Electrical system The entire system should comply with the valid safety regulations as mentioned in e BS 7671 The IEE Wiring Regulations 1 5 Domestic water system The entire system should comply with the valid safety regulations as mentioned in e BS 5546 Installation of gas hot wa
30. ct the CH system 1 Flush the CH system thoroughly 2 Mount the flow and return pipes to the mounting bracket All pipes must be mounted tension free in order to avoid ticking of the pipes Existing connections must not be twisted in order to avoid leaks at the connections with the external pipes The CH system should be provided with e A filling loop in the return pipe directly below the appliance e A drain tap at the lowest point of the system e An additional expansion tank if required see 5 1 1 e Anon return valve when pipes are running upward at a short distance from the appliance This prevents a gravity effect during domestic hot water operation of the appliance 5 1 1 Expansion vessel The appliance is fitted with a 6 litre expansion vessel which is adequate for a system with a water volume not exceeding 100 litres typically 8 radiators For larger volume systems an additional expansion vessel must be fitted Atmos can supply 12 litre or 18 litre Robokit 5 1 2 Thermostatic radiator valves Building regulations require a room thermostat to be fitted on all installations Do not fit a thermostatic valve on the radiators in the room where the thermostat is situated otherwise the controls will not function correctly 5 1 3 System by pass A by pass is not required for safe operation of the boiler For heating systems where there are thermostatic valves on all radiators or where there are other system flow restrictions s
31. d freezing of the appliance heat exchanger it has an appliance frost protection When the temperature of the heat exchanger drops to 5 C the burner will be activated and the pump will start running until the temperature of the heat exchanger reaches 10 C Code 7 is given when the appliance frost protection intervenes heating heat exchanger e When the system or a part thereof can freeze a frost thermostat should be installed in the area to be protected Connect this according to the wiring diagram See 10 1 Remark When the appliance is out of action B on the service displav the appliance frost protection is still active However there will be no response to heat demand from an external frost thermostat 11 MAIN COMPONENTS CH pump Gas valve Clamping plate Supply sensor 1 Return sensor S2 Fan Hot water flow switch Pressure gauge 1m connecting cable 230 V Manual air vent Sight glass and mirror Air supply left or right TA 7 Ttoo mM VO WwW gt Additional Components supplied Valve set supplied separately with boiler 12 Ss lt cHwWHMW A VIGZEZ Flue discharge or concentric connection Connecting block terminal list X Condensate discharge Hot water sensor 3 Condensate trap Heat exchanger Controller operating panel and display lonisation ignition probe Position type plate Expa
32. damage to the product or the environment or in personal injury Service and technical support For information about specific adjustments installation maintenance and repair activities please contact Atmos Heating Systems West March DAVENTRY Northants NNII 4SA Tel 01327 871990 fax 01327 871905 Email sales atmos uk com internet www atmos uk com Environment ORY When the appliance needs replacement your installer may amp arrange for disposal Should this not be possible then make enquiries with your local council about the possibilities for re use or environmental friendly processing of the materials used or contact a scrap dealer about disposal Various plastics and metals have been used in producing the appliance Also the appliance contains electronic components that are electronic waste Intended use The appliance as described in this documentation is intended for heating rooms with a central heating system and or for supplying hot water Any other use is outside the scope of intended use for this appliance Any liability for damage resulting from improper use shall not be accepted Atmos Warranty Short version Atmos Warranty is against any material construction or operation faults that are found to be of original manufacturing origin A full statement of the Atmos Warranty is available www atmos uk com or 01327 871990 Atmos boiler warranty is subject to conditions two years from date of
33. dicates a fault See 8 1 CH operation An on off thermostat can be connected to the controller if necessary in combination with an outside sensor See the Electrical diagram 10 1 When heat is demanded by a thermostat signal the fan runs codel 3 and the burner is ignited code 14 followed bv the CH operating condition code 15 During CH operation the fan speed and hence the power of the appliance is adjusted This is done in such a way that the temperature of the CH water is controlled towards the set CH supply temperature In the case of an on off thermostat the CH supply temperature is set at the operating panel In the case of an outside sensor the CH supply temperature is determined by the weather dependent control programmed in the controller During CH operation the demanded CH supply temperature is displayed on the operating panel During CH operation the actual CH supply temperature can be read by pressing the service button Note Instead of an on off thermostat an OpenTherm thermostat can be connected to the controller as described in 5 4 1 In this case the desired CH temperature is set by the thermostat The minimum temperature and the operation mode can be set with parameters E and IE refer to 7 3 sl Domestic hot water operation The hot water supply has priority over the heating When the flow switch detects a domestic hot water demand of more than 2 l min the fan starts running code 3
34. discharge pipe The condensate is slightly acidic pH between 3 and 6 and should be disposed of in the following ways using suitable plastic waste pipe Note copper or steel must not be used e internal stack pipe see diagram e waste pipe see diagrams e external drain or gulley e purpose made soakaway The pipework must incorporate a minimum fall of 2 5 degrees or 44mm metre towards its point of termination The condensate pipework external to the property or in an unheated part eg a garage must be suitably insulated to protect against freezing and the length of the external pipe restricted to a maximum of 3 metre If an external drain or gullev is used then the open end of the pipe should be terminated below the grid level but above the water level If a proprietary soakaway is used install at least 1 metre away from the external wall and clear of foundations and services The soakaway is buried in the ground and surrounded by limestone chippings to neutralise the condensate Internal sail amp vent stack Boiler y Branch pipe Air break re 110mm min for 100mm stack Min fall of 44mm metre 450mm min for up to Condensate connection to internal stack Min fall of 44mm metre Connection to internal sink waste upstream of sink trap Boiler Air break mi i 4 Min fall of dim metre Connection to internal sink waste downstream of sink trap 19 5 CONNECTIONS 5 1 Conne
35. each application There are different configurations possible and the main ones are illustrated CFS NV Naturally ventilated working under negative pressure CFS FA Fan assisted working under positive pressure smaller diameter pipes are used 5 9 1 Atmos CFSFO FA System Appliance category C83 Communal Flue System Exhaust Flue Only Fan Assisted An air supply from the outside wall and a roof outlet with common discharge system is allowed The system is fan assisted positive pressure A non return valve arrangement on each boiler is essential to prevent recirculation of exhaust gases to non operational appliances There is a common condensate collector at the base of the flue system which must be taken to a suitable drain Maximum pipe length The maximum length of the air supply and flue discharge pipes between appliance and common flue discharge and air supply together is 75 metres 80mm pipes Common flue discharge The outlet of the flue discharge can be made at any place in the pitching roof surface provided that the outlet in the roof surface has the same orientation as the air supply in the outside wall With a flat roof the outlet of the flue discharge must be made in the free outlet area 5 9 2 Atmos CFS System Appliance category C43 CFS NV or CFS FA systems are available The fan assisted positive pressure system allows a more compact installation Connection from the appliance can be either
36. ee en we en ee we ne we one ee ene vee ee vee ee vee eee BA INO WCAG CH estetecssatcastenctatcatctatiseatnietetesetatnteiotadessttadesstabalesetabetatsstedetsseitetatetstazaietete 8 5 FREGUCO GOUT DU sis sasdhcdsaitvancsnntaeyteaadondtuattanss sanusvedsentduatsacddbetnisadealeantdentsaensnntuastdaedenmuataactine 8 6 CH does not reach the correct temperature ssssessssnnenzennnnnzannenzannnnznnnnnnennanenaznnzzni Bel ING TOL Wale HW sse sia 8 8 Hot water does not reach the correct temperature sssssessesennzannnzennnnzzennnnenzznnnemni 9 SERVICING THE BOILER AND COMPONENT REPLACEMENT OA SERVIGING THE BOILER niesi kai ta 92 COMPONENT REPLACEMENT ssemmi eia ETT 10 Technical Specifications TORE Eectica dg AN g O 11 CE Declaration NOTE The Benchmark Checklist amp Service Record are included at the back of the Manual This manual Using this manual you can safely install and maintain this appliance Carefully follow the instructions In case of doubt contact Atmos Heating Systems Keep these instructions near the appliance Abbreviations and names used Description To be referred to as High Efficiency Atmos InterCombi wall mounted gas heater Appliance Appliance with piping for central heating CH system Appliance with piping for domestic water HW system Icons The following symbols are used in this manual CAUTION Procedures that when not carried out with due care may result in
37. factured after 15 their agents can supply these January 2009 have a Torx T10 screw Remove the spark ignition block by pulling apart horizontally Undo the holding the ignition block on the gas upper and lower unions making sure that the O rings and gas setting valve Remove this screw prior to pulling ring are not lost or damaged see diagram in 7 7 Replace the gas the ignition unit off valve and refit the unions and the ignition block Note After replacing the gas valve carry out the gas analysis adjustments as given in 7 9 If replacing the ignition block then pull apart as above Remove the push fit cable to the probe and undo the X1 connections at the controller and earth Replace the ignition block and make the connections 9 2 3 Fan Remove the electrical connector Undo the upper union from the gas valve Undo the two 8mm nuts as shown in the photo Remove the assembly including the sealing ring Undo the three Allen screws M4x10 to remove the gas inlet sub assembly Fit the replacement fan in reverse order Check the sealing ring is not damaged and replace if necessary check that it seals correctly See also 9 1 3 for appliances fitted with Non Return Valve flue gas 9 2 4 Controller If possible record the parameters as described in 7 Remove the display cover and undo the two posidrive screws to drop down the controller panel as shown in the diagram in 5 4 Pull apart the connectors and undo t
38. given to the gas air ratio the integrity of the flue or blockage in the heat exchanger Contact the manufacturer for assistance 43 8 FAULTS When the controller detects a fault the red fault LED flashes above the Reset button and a fault code is shown on the Temperature display After the fault has been remedied the controller can be restarted by pressing the Reset button for 5 secs The following faults are detected and displayed displa e Replace S1 e Replace S2 2 0 Sensor fault after self check e Replace boiler sensor S1 and or S2 1 Temperature too high Air in system Pump does not run e Too little circulation in system radiators closed pump setting too low e Flowswitch stuck 4 Gas tap closed ii Incorrect ignition distance Gas inlet pressure too low or disappears Gas valve or ignition unit does not receive voltage 6 Flame detection fault e Replace ignition cable spark probe e Replace ignition unit e Replace controller Fan speed incorrect e Fan rubs against casing e Wiring between fan and casing e Check the wires for poor contact tacho signal e Replace fan 29 30 Gas valve relay fault e Replace controller 44 8 1 Burner does not ignite Possible causes Remedies Gas tap is closed gt Yes 1 Open the gas tap gt Yes 1 De aerate the gas pipe Jb No the gascompany Jt No SONIA ss IL No No spark 1 Check the cabling Ignition unit on gas uni
39. gy Efficiency Checklist completed Yes Neo Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 2 Date Energy Efficiency Checklist completed Yes Nol Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 4 Date Energy Efficiency Checklist completed Vesl Nel Engineer Name Company Name Telephone Number Gas Sate Register Number Comments Signature SERVICE 6 Date Energy Efficiency Checklist completed Vesl Mo E Engineer Name Com pany Name Telephone Number Gas Sate Register Number Comments signature SERVICE 8 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 10 Date Energy Efficiency Checklist completed Yes Mo Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature
40. he 8mm nut to allow the controller assembly to be removed and replaced After replacement set the parameters as described in 7 to the previously recorded values if available or as described in 6 and 7 51 9 2 5 Burner spark ignition probe Remove the front cover of the heat exchanger as described in 9 1 2 Unscrew the 4 screws shown on the photo to allow the stainless steel burner mesh to be removed These screws are Torx 20 RVS A2 4 2x25 or Allen bolt M4x20 units before 2006 The burner gasket should be checked and replaced if damaged Replace the burner mesh assembly and refit the screws The spark ignition probe is shown in the photo in 9 1 2 and also the diagram in 8 2 To replace the probe pull off the ignition cable and unscrew the 2 screws Allen bolt M4x8 The seal should be checked and replaced if damaged Replace the probe and refit the seal and the screws Check the spark gap and replace the front cover as described in 9 1 2 9 2 6 Flow return temperature sensors The supply temp sensor is located above the return temp sensor The latter is shown in the photo Disconnect the two pin connector and release the spring clip Pull out the sensor and replace Note The replacement of the components below this box requires the appliance to be drained CH side Drain the appliance using the drain tap and drain the system at the lowest point HW side Close the valve for the cold water int
41. heck for circulation at least 2 or 3 gt ue radiators must be open Jt No The boiler power is not set well CS Yes 1 Adjust the power for the system see Setting maximum CH power IL No No heat transfer due to scaling or pollution DY 1 Descale or flush the heat exchanger in the heat exchanger ii on the CH side 8 7 No hot water HW Possible causes Remedies Flow switch does not switch 1 Tap flow lt 2 0 l min gt 10S 2 Replace the flow switch Jt No No voltage on the flow switch 24 V Vise if E ku wiring according to the IL No gt vos TRS IL No gt Yes Bebra oases 47 8 8 Hot water does not reach the correct temperature Possible causes Remedies ene ene in CD Yes 1 Adjust the inlet combination Lb No Temperature setting water circuit too low y 1 Set the hot water circuit to 60 C dependent on the required temperature IL No No heat transfer due to scaling or pollution gt Yes 1 Descale or flush the heat exchanger in the heat exchanger on the tap water side on the tap water side IL No Ca water pera TPC ps Table 6 NTC resistances NTC 12 kOhm TEC Rfohm T C JRjohmi TPC __ R ohm o f36130 40665380 1707 10 22800 f50 4609 90 1266 20 14770 jeo 3253 100 982 48 9 SERVICING THE BOILER AND COMPONENT REPLACEMENT 9 1 SERVICING THE BOILER The appliance and the system should be serviced annual
42. ill invalidate the warranty 4 6 Mount the appliance 1 Check whether the compression rings of the optional mounting bracket are straight in the connectors 2 Place the appliance slide it top down over the mounting strip Make sure that the pipes simultaneously slide into the compression fittings of the optional mounting bracket 3 The flexible tube from the condensate trap should be inserted into an open waste pipe of not less than 32 mm diameter If connected to a soil pipe or waste system the waste pipe must include a trap similar to arrangement for washing machine For more information on condensate disposal please refer to 4 8 4 The flexible tube from the pressure relief safety valve should be inserted into the waste pipe or pushed over the 15 mm copper discharge pipe if provided 5 Tighten the compression fittings to the optional mounting bracket 6 Mount the air supply and the flue discharge 7 Close the air supply opening that is not used with the plug supplied 4 7 Fit the pipework cover optional item 1 Insert the four hooks of the pipework cover in the slots of the appliance 2 Slide the cover backwards sliding the hooks into the slots and locking the cover 4 8 Condensate disposal The appliance is provided with a 25 mm flexible pipe from its condensate trap As given in 4 6 this should be inserted into an open waste pipe of not less than 32 mm diameter together with the safety
43. in a distance of 1 m from the appliance In order to avoid freezing of the condensate discharge the appliance should be installed in a frost free room 4 4 1 Installation in a kitchen cupboard Make sure there is sufficient ventilation above and below the appliance When the appliance is placed in a small cupboard ventilation openings of at least 50 cm must be made 4 4 2 Installation in an airing cupboard Compartment ventilation is not required for a standard airing cupboard eg 0 6 x 0 6 x 2 3m high 4 4 3 Remove front panel Remove the optional pipework cover and the front panel for carrying out work on the appliance as follows 1 Remove the pipework cover A if used forwards 2 Unscrew both recessed crosshead screws B at the bottom of the appliance 3 Lift the front panel C vertically upwards and remove it forwards 4 5 Mounting and General Information Depending on the mounting option ordered the following mounting methods are available Mounting strip A alone OR mounting strip A and optional pipe mounting bracket B OR rear mounting frame C and pipe mounting bracket B which are both optional items This arrangement allows for vertical pipework behind the boiler Note that when the pipe mounting bracket is used the pipes can be connected before installing the appliance 4 5 1 Fitting the mounting strip 1 Fasten the mounting strip horizontally to the wall
44. ing Checklist and Service Record to be completed by the Installer Service Engineer Benchmark places responsibilities on both manufacturers and installers The purpose is to ensure that customers are provided with the correct equipment for their needs that it is installed commissioned and serviced in accordance with the manufacturer s instructions by competent persons and that it meets the requirements of the appropriate Building Regulations The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer for future reference Installers are required to carry out installation commissioning and servicing work in accordance with the Benchmark Code of Practice which is available from the Heating and Hotwater Industry Council who manage and promote the Scheme Refer to www centralheating co uk for more information L enchmar WRA S os PROP THE MARK OF QUALITY FOR THE INSTALLATION COMMISSIONING AND SERVICING OF DOMESTIC HEATING AND HOT WATER SYSTEMS TABLE OF CONTENTS 1 ae Regulations 7 Fe C C ee en ee ee E E E E E 7 I GIO E A eens A A E E E T Tee E l o E A E A AAA A AEAEE T 14 Electical GV SIE Ma e e A ai 1 5 Domestic water system c cccccscsssssssssssssssscsscsssssssssessessesessessessessessessessessessessesseseesaesaesaesaesaesaesaeseseeseseeseesensaseas T 1 6 Flue discharge and air supply tast i T 2 Description of the Appliance 8 Va I
45. length of an uninsulated hot water pipe with a diameter of 12 mm or 10mm is 20 m Note that it is preferable to insulate the hot water pipes e When the appliance is used for hot water supply only the heating function can be switched off by changing the parameter 1 setting see 7 2 and 7 3 The CH system does not need to be connected or filled e Ifthe appliance is shutdown during the winter the domestic hot water should be drained to prevent freezing For this the cold water connection at the bottom of the appliance must be disconnected Thermostatic Mixing Valve Option The initial slug of hot water may be in excess of 60 C irrespective of the settings If this is deemed to be a risk to the user or undesirable then a TMV should be installed or mixing taps should be used Hot Water Output The graph for the hot water flow resistance is shown The maximum system resistance for 9 litre min flow rate is approx 0 75 bar or 7 5m head A Not applicable B InterCombi HE32 X Water pipe pressure in bar Y Water flow rate in I minute 10 5 2 1 Appliance with pre heating by solar system This appliance is suitable for use with an Atmos MonoSolar preheated tank and solar panel Ask Atmos for details L min 415 5 13 11 9 7 A 5 3 gt 1 0 02 04 06 08 10 1 2 1 4 1 6 1 8 2 0 X gt Bar 21 5 3 22 Connecting the gas supplv
46. ly by a qualified service engineer For appliances connected to propane gas a six monthly service in the first two years to simply clean the condensate trap and pipe may be neccessary Due to the nature of propane gas a jelly like substance can build up in the trap causing it to become blocked L Fan cable 9 1 1 Preparation connector Switch off the appliance using the On Off button on the operating panel biel SCTEWS xi l l en socket Switch off the electrical supply to the appliance Close the gas tap D Unscrew the two recessed screws left and right at the front underneath ignition the appliance and lift remove the front panel See photo in 4 4 3 block Wait until the appliance and the burner have cooled down Swing out the expansion vessel by undoing the clip to raise the vessel slightly 9 1 2 Checking the heat exchanger and spark ignition probe Remove the connector from the fan and the ignition block from the gas valve Disconnect the lower gas valve union Unscrew the 10 socket screws Allen socket M8x40 from the front cover and remove this forwards complete with gas valve and fan While removing the front cover do not hold this at the gas valve or the fan Be careful not to damage the burner and the fan while removing the front plate The burner does not need any maintenance Never clean the burner with a brush or compressed air This causes damage to the metal fibre Check the spark ignition probe
47. measuring the CO content of the flue gases Remark e A CO measuring nipple must be mounted right above the appliance in the flue discharge Dust cap socket head wrench torx T15 Setting screw for the low position socket head wrench torx T15 Off set pressure measuring nipple Inlet pressure measuring nipple OO WY 1 Switch off the appliance using the On Off button l I on service displav 2 Open the flue gas measuring nipple and connect the measuring hose 3 Switch on the appliance using the On Off button 4 Set the boiler to the lowest output by simultaneously pressing the Siemens gas valve amp ignition transformer Service and buttons on the operating panel until ani L appears on the service displav 5 Measure the CO value If the CO value does not correspond with the value in the table proceed as follows for setting 6 Remove the front cover of the appliance 7 Remove the dust cap A with a torx T15 driver 8 Using a torx driver 115 adjust the setting screw B to the correct CO value clockwise higher and counter clockwise lower 9 After measuring and setting set the boiler to the highest output by simultaneously pressing the Service and buttons twice on the operating panel until an appears on the service display 10 Measure the CO value Check that the CO2 value corresponds with the value in the table 11 Ifthe high output CO is not within the parameters allowed in
48. minals must be sited above 2 1m from ground for walkway or patio also for car parking area less than 2 5m from terminal 5 5 2 Flue system The flue system must be installed in accordance with BS5440 1 and the Building Regulations Horizontal flue pipe runs must always be installed with a minimum slope of 50 mm meter towards the boiler This will prevent condensation from gathering in the flue pipe and will also reduce the chance of icicles forming over horizontal pipe ends in the winter The flue terminal must be sited with minimum clearance distances as shown in the diagram A terminal guard must be fitted if the terminal is sited less than 2m above ground level or above a balcony or accessible flat roof Where the flue terminates within 1m of a plastic or painted gutter or within 500mm of painted eaves then protection should be provided in the form of an aluminium shield at least 1m in length fitted to the underside of the gutter or painted surface Please Note Due to the low flue gas temperature pluming will occur at the flue terminal Care should be taken to ensure that the discharge plume will not cause annoyance to the customer or neighbours It is generally recommended that flues should discharge vertically at roof level In this position pluming is not normally a problem 25 Note regarding internal air flue systems It is recommended that the boiler is sited on or next to an external wall so as to
49. n the event of full payment for a product not being received Atmos shall be discharged from all further contractual or warranty obligations Surface and or transport damage are outside the scope of this warranty Any warranty provision shall not apply if Atmos determine that the fault is due to improper application use neglect accidental damage or injudicious treatment non observance of instructions contained in Atmos Manuals or due to improper repair adjustment installation or maintenance or due to work carried out by unqualified engineers The warranty also lapses if the Atmos boiler has not had a yearly service in accordance with instructions This warranty shall not apply if the fault is caused by scale failure or abnormality of gas or water supply or impact of any external influence that adversely affects the normal operation of the product This shall include but not be restricted to dehydration abnormal or high voltage and hard water Excluded parts ignition amp ionisation probe glass fuse and air vent 1 SAFETY REGULATIONS The appliance must be installed in accordance with the Gas Safety Installation and Use Regulations October 1994 Failure to install appliances correctly could lead to prosecution Atmos Heating Systems does not accept any liability for damage or injury caused by not strictly observing the current safety regulations and instructions nor by negligence while installing the Atmos InterCom
50. nscrew the screws A in order to gain access to the space of the appliance controller B The cover plate amp display hinges open downwards This gives access to the controller and electrical connections Consult 5 4 and 10 1 for making connections After having made the required connections connect the appliance to a switched supply as given above Controller Label and Associated Terminals X4 TERMINALS 24Vdc X2 TERMINALS 230Vac 46678 9 10 11 12 i 2 3 4 E 7 8 vovovoVoo UU 4 56 7 8 9 1N1112 DDL D 20 Ave Connector X2 230VAC controls 1 3 Room themnostat 230V AC I switeh ive 3 five fused 1 3 Frost thermostat 230V AC 1 switch ive 3 ive fused 2 4 Mains 2 Lie 4 Neutral l 8 CH pump B Dutput Live 7 Neutra Nole Conpect Earth fo earth ierminafe Wing ai cae ae eee Se ee ee zma reter mem ee ee ee ee ee ee IK aa T Connector X4 24VDC controls i 6 1 Room thermostat 24V DC 0 1A 6 7 Frost thermostat 24V DC 0 1A 8 9 Outdoor sensor 12k0hm 25 C i Ant nt BATIET D2 Note Terminals X4 11 amp 12 are available for OpenTherm modulating stat 5 4 1 24V dc Electrical connections 24V dc Terminals X4 Description Connector X4 l Remarks Outside temp 8 9 sensor modulating stat amp 6 7 not used Frost stat Parallel through room stat i Ji Power 24Vdc 6 24Vdc 9 OUTDOOR OPENTHERM SVA SENSOR
51. nsion vessel shown in broken lines Pressure relief safety valve 3 bar 3 1 Accessories Description Part Ref Pipe mounting bracket 092 537 e Connection supply and return 22 mm diameter e Connection cold and hot water 15 mm diameter e Connection gas 1 2 female thread e Mounting strip boiler e Bag with fixings Rear mounting frame for top pipe connection 092507 Bottom Pipework cover 092527 Outside sensor for weather compensation 203 207 Conversion set to Propane LPG or G31 075537 Interface cable for Installers 230677 13 4 INSTALLATION 4 1 Overall dimensions a CHreum 2 mmdianeter Tj nn B Codwater mdme TE nn 32 mm dia after trap 25 mm dia flexible Y 80 mm diameter 14 4 2 Unpacking the appliance 1 Unpack the appliance 2 Check the content of the packaging This consists of e Appliance A Mounting strip B Condensate trap C Installation Instructions User Operating Instructions Warranty card 3 Valve set supplied separately with b
52. nsnsaess 26 o7 Rooronilet DICTA GAC CN sir ES 32 5 8 Atmos SUS sco a a ia 33 9 9 Atmos Communal Flue System CFS uu ccccsssssssscssssessssscsessessesecsessessesessessessesessessesausesseseessesaseeseusausaseeseesaeses 34 6 Commissioning 35 6 1 Fill and de aerate the appliance and the SYStOM cccccsscssessssssssesscsscsscsssessessassessessasesessesessessescaseassaseaseaseaseass 35 602 Commissioning o GN CS ster aatcs seek sete ccet cece ce cere A AEE 36 Co SG G OM QOMT ia 37 7 Setting and Adjustment 38 WGN Dijecivviaoporalitia DANN iseia ta 38 2 Settings thr ugh the Service COE ai 38 Lo FERIE aa A ee ete et an MM 39 fik Seting makmun CH OW CN ee eee data 40 Lo semg odp DOO a e tarsus ater ane sae nee A acum deeeae A 40 7 6 Weather dependent Control ccccccccssssscsssssssscssssscssscsessessesssessesseseeseessessesseesaeseessessaesaeseessaesaeseesassaesaessatsatses 41 TY Conversion tO other gas Ype lsiera R 41 Lo CASA CO Oee E E E EE E E E EE E E EEE E 41 79 Getnggas al CONTO s sieg a 42 7 10 Carbon monoxide carbon dioxide FAatiOn ccccssecscssssssscsecsscscsecsecsesecsessessececsesseseesessessesaesasseseesaesaseesaesaesasseseesanses 43 8 Faults 44 8 1 Burner does not ignite a e secede eas occ cates eo eee ee 45 8 2 Burner ignites with MUCH NOISE ccccccesscssssscsecssecsececsecssecsesseseessecsecseseaeseeseesseesaeseesseseaeseeseeseaesaeseessassaesaesaeseaeees 45 8 3 BWIET resonat S nen nee
53. nufacturer s instructions Use the filling loop to fill the system to a maximum pressure of 1 to 2 bar with a cold system De aerate the appliance with the manual air vent A in diagram Alternatively an automatic air vent can be mounted to the appliance instead of the manual air vent Note When the appliance is located at or near to the top of the system eg in a loft an automatic air vent should be fitted Vent each radiator and purpose fitted air vent in turn starting with the lowest in the system The system pressure should be regularly monitored during this process and topped up when required Air should be vented from the appliance pump by opening the pump s vent plug and allowing water to bleed for a few seconds Note Take care that the water does not splash onto the electric parts eg controller and terminals 5 Check all joints for leaks 6 Fill the condensate trap with water important see diagram 6 1 2 Hot water supply 6 1 3 1 2 3 Open the main tap in order to pressurise the hot water part Vent the heat exchanger and the pipe svstem bv opening a hot water tap Leave the tap open until all the air has left the system Check all joints for leaks Gas supplv Purge the gas supply if necessary via the inlet pressure measuring nipple on the gas valve Check the connections for leaks Check the inlet pressure See Gas and air control Note The appliance must be installed and commissioned
54. o the appliance and drain by disconnecting the HW connections underneath the appliance or opening hot water taps After replacement refill the appliance as given in 6 1 9 2 7 Flow switch Disconnect the two pin connector and undo the two unions to release the flow switch Ensure that the two sealing rings and brass ring are not damaged and are replaced with the new flow switch Note When replacing with new device ensure arrow for flow on the black body is pointing vertically upwards 9 2 8 Pressure relief valve Remove the plastic pipe from the safety discharge Undo the pressure sensor capillary and undo the union at the connection with the CH flow pipe Remove the pressure relief valve and inlet pipe Remove the plastic fitting from the discharge and undo the pipe connection to allow removal of the valve Fit replacement valve in reverse order using a sealant suitable for potable water 9 2 9 Pressure gauge sensor Undo the pressure sensor capillary and unscrew the two posidrive screws to release the cable clamp Remove the gauge and capillary and replace 9 2 10 Hot water temperature sensor Remove the electrical connector Undo the sensor with its O ring and replace 52 4x burner mesh screws Pressure Flow relief valve switch Ds Pressure Hot water gauge temp l sensor sensor i Cable clamp a i j B r AI j j H E jen ji f FI wat al est 7 f a di ESU a aie i W jk F aa
55. oiler comprising 2 x 22mm isolation valves 1 x 15mm isolation valve with blue lever for cold water 1 x gas valve 4 Check the appliance for any damage report damage to the Supplier immediately CAUTION This appliance should be lifted and handled by 2 people Weight 39 kg 4 3 Additional dimensions The diagram shown below gives additional dimensions primarily for the mounting arrangement using the OPTIONAL mounting bracket 98 5 2x mounting strip mounting bracket 98 5 2x kJ ri Seto A re ar zar i OPTIONAL Ue U UF Uk FID 825 x 500mm Note The centre line of the hexagonal notch in the mounting bracket is also the centre line of the flue hole 15 4 4 Boiler location Clearances Above casing 200mm min Below casing 230mm min 30mm min 30mm min in operation 140mm min servicing 30mm min in operation 450mm min servicing Keep 50 mm free space above the front panel in order to be able to remove the front panel from the casing Allow 140 mm on the left side for swinging out the expansion vessel during commissioning service The appliance can be fitted to a mounting frame The assembly or just the appliance should be mounted to a wall with sufficient bearing strength In case of light wall constructions resonance sounds may occur The appliance is suitable for mounting on a combustible wall eg stud wall There must be an earthed electrical supply with
56. ollows for setting 7 Remove the dust cap A with a torx T15 driver 8 Set the pressure using setting screw B clockwise higher and counter clockwise lower 9 After measuring and setting replace the cover cap A and close the measuring nipple C again 10 Remount the front cover of the appliance Caution Check the measuring nipples used for gas tightness 7 10 Carbon monoxide carbon dioxide ratio Atmos recommends that a carbon dioxide carbon monoxide ratio test is carried out when the boiler is commissioned This is best done when the CO content of the flue gasses is measured See the procedure described in 7 9 1 Set the boiler to the lowest output by simultaneously pressing the Service and buttons on the operating panel until an L appears on the service display 2 Measure the CO CO ratio 3 Set the boiler to the high output by simultaneously pressing the Service and buttons twice on the operating panel until an H appears on the service display 4 Measure the CO CO ratio The CO CO ratio at low or high output should be no higher than 0 004 A CO CO ratio between 0 004 and 0 008 means that the appliance is At Risk AR A CO CO ratio above 0 008 means that the appliance is Immediately Dangerous ID Where an at risk or immediately dangerous situation is encountered measures must be undertaken to rectify the situation Particular attention should be
57. opriate Building Regulations and then handed to the customer to keep for future reference Failure to install and commission this equipment to the manufacturer s instructions may invalidate the warranty but does not affect statutory rights Customer Name Tele hone Number Address Boiler Make and Model Boiler SerialNumber L IELlllllllbllblllblllllolllollolllol lblllllblllLL UI Commissioned by pnnt name Gas Safe Register Number Company Name Telephone Number Company Address o Commissioning Date To be completed by the customer on receipt of a Building Regulations Compliance Certficate Building Regulations Notfication Number f applicablel CONTROLS Tick the appropriate boxes Time and Temperature Control to Heating Room Themnostat and Programmable Load Weather ptimum Start Frogrammer Timer Ream Thennostat Compensation Control Time and Temperature Control to Hot Water Cylinder Thermostat and Programmer Timer Combination Boiler Heating Zone Valves Fitted Not Required Hot Water Zone Valves Fitted Not Required l l Thermostatic Radiator Valves Fitted ii Not Required Automatic Bypass to System Fitted Mat Required Boiler Interlock Provided ALL SYSTEMS The system has been flushed and cleaned in accordance with BS7593 and boiler manufacturers instructions Yes What system cleaner was used What inhibitor was used Quantity e litres CENTRAL HEATING MODE Measure and Record Gas Rate st OR e Bu
58. pe to facilitate the draining away of condensate before it reaches the alluminium parts of the flue system or the boiler itself This is to prevent excessive corrosion Atmos can supply a condensate drain off fitting for 80mm flue pipe It incorporates a flue test point and it needs to be fitted into a vertical section of the flue The condensate drain off fitting allows connection to solvent weld overflow pipe A trap must be fitted into the condensate drain to prevent flue gases escaping 31 5 7 Roof outlet prefabricated chimnev Appliance category C33 When there is little space in a shaft a roof outlet through a prefabricated chimney may be necessary The prefabricated chimney must comply with the minimum lengths shown The supplier must guarantee the proper operation of the prefabricated chimney with respect to wind attack ice formation rain ingress etc RARI EM 7 G ENI A T hore X ka VA In view of the different models and requirements the prefabricated chimneys must be adjusted to the local situation a gas certificate is not required CAUTION The connection of the air supplv and the flue discharge between the appliance and the prefab chimnev must be made in pipes of diameter 80 mm aaa ENV 7 L ro Maximum pipe length See 5 6 5 Q Mounting of prefabricated chimney The outlet can be made at any place in the pitched or flat roof surface o ti J T 7 L
59. rating panel or when the mains voltage has been interrupted 37 7 SETTING AND ADJUSTMENT The functioning of the appliance is mainly determined by the parameter setting in the appliance controller A part of this can be set directly via the operating panel while another part requires an Installer code to be entered before settings can be changed 7 1 Directly via operating panel The following settings can be made directly via the operating panel Appliance on off The appliance is activated by means of the On Off button When the appliance is working the green LED will be lit When the appliance is off one bar on the service display l I is shown to indicate the presence of voltage Adjustment of CH supplv temperature and Domestic hot water temperature Press the Temperature button for approx 2 secs until the LED CH and the displav start to flash the displav shows the set temperature Change the temperature using the and buttons adjustable between 30 C and 90 C Press the Temperature button again to select domestic HW the LED HW and display flash the display shows the set temperature Change the temperature using the and buttons adjustable between 40 C and 65 C Press the Reset button to store the changes or press the On Off button to close the menu without storing the changes Note After 30 seconds of no action the changes will automatically be stored and the controller will return to no
60. rmal Please also note If the appliance is used for low temperature heating it is recommended that the hot water temperature is set at 60 C This is to prevent a possible spread of legionella Domestic hot water Keep hot function The domestic hot water Keep hot function can be set using the HW Store button and it has the following settings e Eco HW Store Eco LED on The Keep hot function is self learning The appliance is inactivated during the night or after a long absence The appliance adjusts to the user pattern of the domestic hot water requirements e On HW Store On LED on The Keep hot function of the appliance is continuously activated The appliance always supplies domestic hot water immediately e Off HW Store Both LEDs off The heat exchanger is not kept warm delaying the supply of domestic hot water except when CH operation has recently occurred Reset button When the controller detects a fault the red fault LED flashes above the Reset button and a fault code is shown on the Temperature display Note On appliances produced before Nov 07 the red LED is lit and a flashing fault code is shown in the service display The appliance can be restarted by pressing the Reset button for 5 seconds Check the nature of the fault by means of the fault codes under 8 and solve the problem if possible before resetting the appliance 7 2 Settings through the service code The controller of the appliance has been set in the f
61. rner Operating Pressure if applicable Central Heating Flow Temperature Central Heating Return Temperature COMBINATION BOILERS ONLY Is the installation in a hard water area above 200ppm Yes Ma lf yes has a water scale reducer been fitted Yes Na DA What type of scale reducer has been fitted DOMESTIC HOT WATER MODE Measure and Record Gas Rate IA erin Burner Operating Pressure at maximum rate mbar OR Gas Inlet Pressure at maximum rate mbar Cold Water Inlet Temperatura dic Hot water has been checked at all outlets Yes temperature 1 C Water Flow Rate JI i min CONDENSING BOILERS ONLY The condensate drain has been installed in accordance with the manufacturer s instructions and or BS5546 BS6798 Yes L ALL INSTALLATIONS If required by the manufacturer record the following CO OR CO ae OR COCO Ratio The heating and hot water system complies with the appropriate Building Regulations Yes The boiler and associated products have been installed and commissioned in accordance with the manufacturer s instructions Yeo The operation of the boiler and system controls have been demonstrated to and understood by the customer Yeo The manufacturer s literature including Benchmark Checklist and Service Record has been explained and left with the customer Yeo ji Commissioning Engineer s Signature Customer s Signature Ta caim setsfaciory demonstration and recejot of manufacturer litergture
62. t be affected by the warmth of sun light chimneys air vents or an open window To avoid problems with moisture the sensor should be placed with the cable outlet downwards and the cable looped so that the lowest part of the cable is lower than the hole in the wall Run the cable back to the appliance ensuring that holes in walls are sealed and pass through a suitable cable gland in the bottom of the appliance Connect the outside temperature sensor cable to the controller as shown in 5 4 1 See Weather dependent control 7 6 for the setting of the CH temperature line 5 4 4 OpenTherm modulating thermostat The appliance is suitable for connecting an OpenTherm modulating thermostat as shown in 5 4 1 The most important function of the modulating thermostat is calculating the supply temperature at a required room temperature in order to make optimum use of the modulating function With every heat demand the appliance display shows the required supply temperature The manual supplied with the OpenThern thermostat should be consulted for more information 5 4 5 230Vac Electrical connections 230Vac Terminals X2 Description lt Connector X2 Remarks ajzj3j4jsjej7 8 room stat Notes 1 The 230Vac stat circuits are alternative to the 2AVdc circuits If the stat has a neutral connection for heat accelerator then connect it for more efficient operation if required The switched live can also be used for S plan or ROOM STAT
63. t faultv Yes 2 Check the spark probe 3 Replace the ignition unit IL No Gas air control not 1 Check the adjustment gt ve easar Lb No Fan faulty 1 Check the wiring gt Yes 2 Check the fuse 3 Replace the fan if necessary Lb No Fan blockage 1 Clean the fan Yes IL No Gas valve faulty 1 Replace the gas valve gt Yes 2 Re adjust the gas valve see Gas air control 8 2 Burner ignites with much noise Possible causes Remedies Inlet pressure too high yy 1 The house gas meter may be faulty Contact the gas company IL No Incorrect ignition distance CS Yes 1 Replace the ignition probe 2 Check the ignition probe distance Jb No Gas air mixture not adjusted properly gt Yes 1 Check the adjustment See Gas air control Jt No Weak spark 1 Replace the ignition probe gt Yes 2 Replace the ignition unit on the gas valve 3 Check the ignition spark gap 45 Spark gap distance approx 4 5 mm 8 3 Burner resonates Possible causes Remedies Inlet pressure too low Yes 1 The house gas meter may be faulty Contact the gas company Il No Re circulation of the flue gases gt Yes 1 Check the flue gases and air supply IL No Gas air mixture not adjusted properly gt Yes 1 1 Check the adjustment see Gas air control 8 4 No heating
64. ter supplies for domestic purposes 1 6 Flue discharge and air supply The flue discharge and the air supply system should comply with e BS 5440 Flues and Ventilation for gas appliances of rated input not exceeding 60 kW Part 1 Flues and Part 2 Ventilation 2 DESCRIPTION OF THE APPLIANCE 2 1 General The Atmos InterCombi wall mounted gas boiler is designed for delivering heat to the water of a CH system and the domestic hot water The air supply and flue discharge can be connected to the appliance by means of two separate pipes or a concentric connection The appliance has its own wall mounting strip but can also be fitted to an optional wall mounting frame that allows top connections An optional pipe mounting bracket for use with the wall mounting strip is available These are supplied separately The Atmos InterCombi wall mounted gas boiler has the CE quality mark and the Gas certification labels HE Sedbuk A SV NZ Solar compatible and CW Class 5 Hot water performance rating 1 to 6 where 6 is the highest and IP44 Protection class It is possible to use the appliance for hot water or for heating only The system that is not used does not need to be connected The appliance as delivered is suitable for natural gas G20 A conversion kit for propane G31 can be supplied upon request 2 2 Operation The Atmos InterCombi wall mounted gas heater is a modulating high efficiency boiler This means that the power is
65. the chart above return to low output and adjust the CO2 setting at low output before returning to high out put to check it again Contact the manufacturer if vou encounter difficulties 12 Measure the CO CO ratio see 7 10 42 13 Exit the test mode by simultaneously pressing the and operating panel Replace the dust cap A and close the flue gas measuring nipple 14 Remount the front cover of the appliance buttons on the Caution Check the measuring nipples used for gas tightness Caution On windy days or on installations with a long flue run it is necessary to replace the front cover of the boiler in order to obtain an accurate CO2 measurement Setting the gas valve by pressure measurement This method is less accurate but usually gives a sufficient result 1 Switch off the appliance using the On Off button l I on service display 2 Remove the front cover of the appliance 3 Turn the measuring nipple C on the gas valve open with two turns and connect this through a tube to the plus connection of the pressure gauge 4 Switch on the appliance using the On Off button 5 Set the boiler to the lowest output by simultaneously pressing the Service and buttons on the operating panel until an L appears on the service display 6 Read the pressure This should be about 5 Pa or 0 05 mBar min 10 Pa max 0 Pa or min 0 1 mBar max 0 mBar When this is not the case proceed as f
66. the night or after a long absence The appliance adjusts to the user pattern of the domestic hot water requirements The eco mode is the most efficient hot water method Note The initial slug of hot water may be in excess of 60 C irrespective of the settings 2 4 PC interface The controller has an interface for a PC With a special cable and accompanying software a PC can be connected This provision makes it possible to follow the behaviour of the controller the appliance and the heating system during a long period 10 2 5 Test programmes In the controller there is provision for putting the appliance into a test status By activating a test programme the appliance will become active with a fixed fan speed without intervention of the control functions The safety functions remain active though Simultaneously press and to switch off the test programme Test programmes Description of programme Button Display combinations eading Burner on with minimum CH service and i power Burner on with maximum service and 1x CH power Burner on with maximum service and 2x H HW power Switch off test programme and Current operating condition 2 5 1 Frost protection The boiler has provision for protecting its heat exchanger as described below NOTE However to avoid the condensate freezing the boiler must be installed ina FROST FREE room i e In order to avoi
67. twin pipe or concentric There is a common condensate collector at the base of the flue system which must be taken to a suitable drain CFS FA systems require a non return valve arrangement on each boiler which is essential to prevent recirculation of exhaust gases to non operational appliances CAUTION For the common flue discharge cover and air supply cover a certificate of incorporation from the Gastec Gasinstituut is required Maximum pipe length The maximum length of the air supply and flue discharge pipes between appliance and CFS system together is 75 metres 80mm pipes 34 A min 1500 Z INI AN k N l Ki ZN We Z Z Y k CASS 1 TA ru TA V AA LIS gt d es Vs y G VJ 6 6 1 6 1 1 COMMISSIONING Fill and de aerate the appliance and the system WARNING Connect the appliance to the mains voltage only after filling and de aerating CH system WARNING All new and existing systems must be thoroughly drained and flushed out in accordance with BS7593 requirements A suitable cleaning agent is Sentinel X400 following the manufacturer s instructions A corrosion inhibitor should be added and the concentration level checked The inhibitor should be suitable for the materials used in the appliance such as copper brass stainless steel steel plastic and rubber A suitable product is Sentinel X100 following the ma
68. uch as zone valves a by pass should be fitted to reduce system noise and to protect the pump The by pass should comprise a proprietary by pass valve with adjustable flow regulation not a fixed setting valve Atmos can supply this valve 20 yy Y w A N Br WD SRI ec gt l FITE Note The flexible tube from the pressure relief safety valve can be inserted directly into the waste pipe if suitably located The flexible tube must be installed so that there are no sharp bends that kink the pipe and cause a restriction in the flow 5 1 4 Underfloor heating For a good operation of the domestic hot water supply there must be no undesired circulation through the appliance caused by a second pump of the CH circuit Connect underfloor heating with an electric shut off valve two way valve to prevent circulation through the appliance when there is no demand for central heating A Boiler B Pump C Thermostatic control valve Note Valve for underfloor heating has remote sensor D Spring operated non return valve E Electrical shut off valve 230 V F Radiators G Room clock thermostat H Maximum thermostat 5 2 Hot water svstem 1 Flush the system thoroughly 2 Mount the cold and hot water pipes to the mounting bracket Remarks e To comply with the Water Regulations the maximum length of an uninsulated hot water pipe with a diameter of 15 mm is 12 m and the maximum
69. ue equivalent lengths Maximum equivalent concentric length allowed is 27 metres Note Includes an allowance for the terminal ie the terminal can be ignored from the equivalent length 80 125mm concentric components Equivalent concentric length M Remarks 00 bed E 3 0 879 bend 5 6 5 Twin pipe connection 1 When using the right hand air supply the sealing cap must be moved to the left hand air supply 2 Locate the pipes for the air supply and flue discharge in the supply and discharge stubs The in built silicone sealing ring provides an airtight connection 29 5 6 6 80mm twin pipe flue system Refer to the Atmos Price List for the full list of flue components Table of Atmos 80mm twin flue equivalent lengths Maximum total length allowed is 60 metres Terminal The flue discharge at the terminal must be at least 75mm in front of the air intake and the distance between the two pipes at least 75mm 80mm Twin pipe extensions for balcony outlet When the free outlet is hindered by an eave balcony gallery or anything else the air supply pipe and the flue discharge pipe must be extended to at least the front side of the overhanging part In this case the flue discharge must be extended 75mm further than the air supply pipe inlet When the air supply is not disturbed by obstacles such as a separating wall and when the outlet is not at the edge of a building the air supply pipe does
70. urge emo fo Setting range 50 to 99 Note For propane set 50 This parameter sets the fan speed for ignition and post purge 890158 Setting range 40 to 50 40 4000 rpm 50 5000 rpm The absolute maximum speed can be set E a this parameter oa new 0 Oene ow g Heen switch off time KAS range 0 to 15 minutes anti cvcling IMI during CH operation 39 7 4 Setting maximum CH power The maximum CH power is set to 50 in the factory When the CH system requires more or less power the maximum CH power can be changed by adjusting the fan speed See table Setting CH power This table gives the relation between the fan speed and the appliance power Setting CH power Required CH power Setting on service display InterCombi HE32 oa approx kW of the maximum speed 2620 BH 26 2 Caution The power slowly increases while burning modulation by time and decreases as soon as the set supply temperature is reached 7 5 Setting pump position The switch for setting the pump position is located on the connecting box of the CH pump 1 Set the pump position on the basis of the set maximum power and the resistance of the system on the water side See diagram Pressure loss and pump lift type Ups 50 130 positions 1 2 and 3 2 Check the temperature difference between the supply and return of the appliance this should be about 20 C The minimum flow through 200 I h 7 0 kW Ill B 750 I h 26 2 kW i
71. ximum CH power is set to 50 of the highest value at the factory see Setting CH power Notes 1 Safety discharge valve is 3 bar 2 Min pressure 1 bar expansion vessel pre charge is 1 bar 54 Electrical diagram 10 1 Additional see note 2 230Vae fused to room stat et Switthed ive from room stat ek Spark plug cap Kohm Mains voltage B eee l M MMMM MMMM M MaM a MaMa Ma T l a lonisation ignition pin Gasvalve ignition unit heat exchanger Earthing of bumer controller Earthing of ii mounting plate G A GG GA A GG GW SG GS GA SS GS GG LETT Sa GLASS LG i 2S TE Se a E E ae ni W a Sl J m Aa JA EM JAG AL EKS G KOM a Di SEJ ATS e WAJER oe SG A S GG SG GI G GG E ce ee PS See eee ri L E GG G ey il H Lin i I i i l I F ll i i LI i L LI 1 i i i 1 l i 1 d i LI i 4 1 i 1 i i i Li i I i i d i i ala Wa SS In SR PR T DA ma Mt ml O dl ali tai ld kit Mal kts i l Malli PL eet ed et Pe Em bi TE FL G KP i en i i ee a a a ee eee a l R eee eee il l Ta gt s sis ph t 8 5 3 SES 2 2 E H EZS SEE B AE 2 f S35 55 22 8 Den 48 me 5 8X mn no Sa H O ES DN Et ga S co TE os 25 IS l 8 o gt gt U i a a a i 23 JA oe oe rin 7 el L I Bi er te te ee eee eee ee 2 a ee ee 2 SS SS SS Sa i
72. y operation 3 heating only operation CH pump continuous 0 pump normal with overrun 1 pump on continuously 2 n a Set CH power Setting maximum CH load range c 99 or 100 if button pressed again when 99 reached 4 l Set HW power 99 Setting maximum HW power range d 99 e the control line Min outside temperature of 7 Setting range 9 C to 10 C Weather dependent control the control line Setting range 10 C to 30 C Weather dependent control the control line f mmmnmarji jememreme CH operation 9 CH pump overrun time after Setting range 0 15 minutes n a external HW tank operation Position of three way or two 0 output signal given for CH operation n a O valve 1 output signal given for HW tank operation n a HW booster J0 doa S O ee l TM 1 step modulation on during CH operation a Setting range 25 to 50 Note For propane or for appliances operation with flue non return oa set 40 Sn 9 Setting range 25 to 50 Note For propane or for appliances operation with flue non teum vave 4 a0 Ferree it during OT demand OT response Ignore the OT demand if it is lower than parameter E ji Set the value at parameter E if the OT demand is lower 2 OT device is switched off and the room stat functions as an on off switch with the supply temp set at the appliance A nice speed CH Ki l range 50 to 99 Note For propane set 50 MW a parameter sets the fan speed for ignition and post p

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