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INSTALLATION INSTRUCTIONS AND USER GUIDE 
 

 
 

 
 

 

 

 
 
 
 
 
 
 
 
 
 
 
 

MATTIRA 

DIGITAL MODULATING ELECTRIC BOILERS 

 FOR CENTRAL HEATING AND DOMESTIC HOT WATER 

 

MAC15B

 

 
 

 

Please read these instructions before installing or using this appliance for the first time.  

These instructions must be followed for the safe installation of the boiler. 

Any problem, fault or damage caused by the non-observance of these instructions will not be covered under the 

manufacturer’s warranty.

 

This manual should be retained with the appliance by the user for future reference

 

Summary of Contents for MATTIRA MAC15B

Page 1: ...uctions before installing or using this appliance for the first time These instructions must be followed for the safe installation of the boiler Any problem fault or damage caused by the non observance of these instructions will not be covered under the manufacturer s warranty This manual should be retained with the appliance by the user for future reference ...

Page 2: ...WATER 23 5 7 MORE INSTALLATION DATA 23 6 OPERATING THE BOILER 24 6 1 INITIAL SWITCHING ON 24 6 2 CONTROL PANEL DESCRIPTION 24 6 3 DOMESTIC HOT WATER OPERATION 23 6 4 CENTRAL HEATING OPERATION 25 6 5 ANTI FREEZE MODE 26 6 6 USER PARAMETERS 26 6 7 HEATING MODULATION FEATURE 27 6 8 LEGIONELLA PROTECTION 27 6 9 AUTO HEATING REGULATION 27 6 10 BLOCKING THE CONTROLS 28 6 11PUMP ANTI SEIZE FUNCTION 28 7 ...

Page 3: ...nt IEE Wiring Regulations Building Regulations Water Fitting Regulations England Wales or Water Byelaws Scotland and all relevant British Standards o This appliance is destined to be permanently connected to a fixed installation The power circuit of the boiler must incorporate an omni polar cut off switch with a separation between the contacts of at least 3 mm o The electricity supply circuit must...

Page 4: ...valve 7 Insulated tank 50L 8 Anti electrolysis DHW hose 9 DHW expansion vessel 3L 10 Automatic purge 11 DHW power electronic PCB 12 Heating power electronic PCB 13 Heating flow detector 14 Heating expansion vessel 6L 15 Circulation pump 16 Insulated heating header tank 17 Heating resistance 18 Heating safety thermal limit switch 19 ON OFF switch 20 Heating 3 bar relief valve 21 Pressure gauge 22 D...

Page 5: ...mended incorporating an automatic bypass valve must be installed on all central heating systems where TRV s are fitted to every radiator Note A bypass circuit incorporating an automatic bypass valve is recommended for all installations The correct heat requirement for the dwelling should be calculated HOT WATER SYSTEM Competency to install unvented hot water systems is required and must be in acco...

Page 6: ...t be sited so that the boiler and controls are not accessible to any persons whilst using a bath or shower and there should be no possibility of water dripping or splashing onto the boiler or controls Electrical safety regulations for clearances must be followed if installed in a bathroom or shower area The boiler has an electric protection rating of IP20 IP2X Where possible the boiler should be s...

Page 7: ...e plugs or fixings minimum M10 size HANDLING BEFORE INSTALLATION The Gabarrón Mattira Boiler must be handled with care and stored the correct way up in a dry place Any manual handling lifting operations will need to comply with the requirements of the Manual Handling Operations Regulations issued by the H S E The appliance can be moved using a sack truck on the rear face although care should be ta...

Page 8: ...table tools such as open end spanners Do not use pipe wrenches extensions or unsuitable tools that may cause damage or water leaks 1 DHW P T Relief Valve to drain via tundish 2 Filling Loop 3 Sealed heating system P T relief valve to drain 4 Full bore isolation valve with drain off above 5 Bypass Circuit incorporating 22mm auto bypass valve 6 Thermostatic mixing valve 7 NRV 8 Group combination val...

Page 9: ...heating circulation The boiler is not suitable for single pipe heating systems only a twin pipe heating system should be used It is recommended that a minimum of 2m of 22mm diameter pipework is present to from the flow and return connections on the boiler as reduction in size prior to this may result in the system flow rate being below the minimum level required resulting in error E3 Drain Point A...

Page 10: ...mage to wiring or electrical components If the discharge pipe does not terminate over a drain then the end of the pipe should terminate facing down and towards the wall Under no circumstances should the discharge be above a window entrance or other public access The installer must give consideration to the possibility that boiling water steam could discharge from the pipe If the discharge pipe is ...

Page 11: ...combi boiler incorporating a 50 litre unvented cylinder Cold water inlet PRV combination valve expansion relief supplied loose Pressure and temperature relief valve Control thermostat Energy cut out thermostat Tundishes supplied loose Immersion heaters including control and cut out thermostats Expansion vessel Technical user product literature In any situation where the volume of heated pipework e...

Page 12: ...ry safety devices and supplied with all the necessary control devices to make installation on site as easy as possible The Gabarrón Mattira combi boiler with integral unvented cylinder is available in one variant 1 Gabarrón Mattira combi boiler c w Integral Direct Unvented Cylinder For providing central heating and hot water heated by electricity Gabarrón Mattira combi boiler incorporates an elect...

Page 13: ...eving compliance with Part L of the Building Regulations The Gabarrón Mattira combi boiler is designed for use with single bathroom properties only and is capable of a delivery up to 12 L min hot water flow rate Mains Water Supply Existing properties with a 15mm supply will be satisfactory provided the local mains pressure is good For new properties the communication and service pipe into the dwel...

Page 14: ...systems are subject to dynamic changes particularly when other hot and cold taps showers are opened and closed which will cause changes in the water temperature at mixed water outlets such as showers For this reason and because these are now no more expensive than a manual shower we strongly recommend the use of thermostatic showers with this appliance These must be used in 3 storey properties whe...

Page 15: ...ework However the information is not exhaustive and reference should always be made to Approved Document G3 of the Building Regulations The final decision regarding any arrangements rests with Building Control and it is recommended that their advice is sought if you have any concerns regarding this aspect of the installation The two safety valves will only discharge water under fault conditions Wh...

Page 16: ...apable of withstanding high temperature discharges of water and 3m from any plastic guttering systems that would collect such discharges 4 Where a single pipe serves a number of discharges such as in blocks of flats the number served should be limited to not more than 6 systems so that any installation can be traced reasonably easily The single common discharge pipe should be at least one pipe siz...

Page 17: ... or adjusted 4 7 TYPICAL INSTALLATION LAYOUT shows the cold water port of the blending valve connected to the balanced cold water outlet This arrangement will only be acceptable if a WRAS approved non return valve is fitted otherwise during the heating cycle the water will expand back into the mains supply as the regulating valve must not be relied upon to act as a check valve under all operating ...

Page 18: ...N INLET GROUP Allow the cylinder to heat to normal working temperature and check again for leaks The pressure relief valve or the P T valve should not operate during the heating cycle If the P T valve operates before the pressure relief valve due to high pressure check that the inlet control group is fitted correctly The boiler heating systems should be filled and commissioned in accordance with g...

Page 19: ...al requirements of BS EN 61000 3 3 The GABARRÓN MATTIRA COMBI MAC15B boilers must be installed in premises having a service capacity 100 A per phase Complete all the pipe work before connecting the boiler to the electricity supply Any re installation must be performed by qualified electricians Ensure that the mains voltage available coincides with that shown on the rating label WARNING IMPORTANT C...

Page 20: ... routed to this point through the cable entry point on the left hand bottom of the boiler CAUTION A mains voltage at the incorrect plug terminal can destroy the electronics Make sure the connecting cables are securely fastened to the plug terminals Wiring External Controls It is recommended that the boiler is controlled by an external control such as a time clock or room thermostat or a combined p...

Page 21: ...for central heating it will be 0 Model 15 corresponds to model MAC15B Boiler maximum output limit MAC15B can be limited to 15 13 12 11 10 9 8 7 6 5 4 3 2 kW Underfloor heating If the boiler is underfloor heating ready this parameter will be 1 otherwise it will be 0 Outdoor temperature probe An outdoor temperature probe not provided can be installed In this case the parameter value will be 1 Heatin...

Page 22: ...er will not exceed this pre set maximum but will still modulate in heating mode up to this level adapting to demand and ensuring economic operation Correct configuration for the selected output can be checked on the boiler display panel following the procedure shown in 7 4 CHECKING RATED HEAT OUTPUT CAUTION It is essential to confirm the power output with the use of a clamp meter LIMITATION OF OUT...

Page 23: ...essary to top up through the filling loop during this operation until the pressure gauge indicates between 1 and 1 5 bar 5 5 PUMP CHECKING VENTING Sometimes i e if display fault E3 it is necessary to check that the pump is properly vented and spinning freely To purge the pump turn on the boiler and with the pump selector alternate between positions III and Min every fifteen seconds Keep this opera...

Page 24: ...he on off switch located at the back of the boiler as shown CAUTION MAINS CONNECTION TERMINALS REMAIN LIVE EVEN IF THE ON OFF SWITCH IS TURNED OFF 6 2 CONTROL PANEL DESCRIPTION MATTIRA COMBI MAC15B i Increases heating water temperature DHW temperature and other messages Heating water temp and other messages Increases DHW temperature Power ON OFF DHW key Power ON OFF heating key Keyboard power ON O...

Page 25: ... setting will be stored automatically after a few seconds or instantly by pushing the button The DHW setting can be varied between 20 and 60 C When Eco Smart is activated the set point temperature is reduced during the non use periods and the word ECO alternates with the DHW setting during the temperature configuration See 6 12 ECO SMART FUNCTION The DHW has priority over the central heating opera...

Page 26: ...customer To access the user parameters menu with front display OFF press and hold the and buttons for at least 5 secs To move forward or backward through the menu use the and buttons respectively To modify a parameter press the button and the current value will be displayed It can be modified with the and buttons Press the button to validate Modulation 1 modulation ON 0 modulation OFF Units ºC Cel...

Page 27: ...TION It is possible to regulate the temperature at which the boiler drives the water heating circuit depending on the outdoors temperature This method of regulation provides maximum comfort as it anticipates changes in the thermal needs of the house The room thermostat continues to regulate the temperature inside the house To activate this mode of heating the installer will need to connect an exte...

Page 28: ...will respond when pressed Internally all the settings remain the same and the boiler will function normally To unlock the buttons press the same button down for a few seconds until the above displayed symbol goes off If the boiler is disconnected from the mains or there is a failure in the house s electricity supply the buttons will also be unlocked 6 11 PUMP ANTI SEIZE FUNCTION The advanced boile...

Page 29: ...tall system by pass Fault E6 displayed DHW temperature sensor Defective DHW tank temperature sensor Check connections Replace sensor if necessary Fault E8 displayed Outdoor temperature sensor Defective outdoor temperature sensor or not present This sensor is optional Check connections Replace sensor if necessary Check parameter settings correct Sect 5 1 Heating system water discharging from 3 bar ...

Page 30: ...by following the procedure shown Unscrew remove the black cap and push the small pin behind it until you hear a click The limiter will not re set until the temperature in the heating header drops below 100 C or 80 C if the boiler is adapted for radiant floor heating Domestic Hot Water overheat As with the heating circuit a second thermal limit switch situated on the left underside of the boiler wi...

Page 31: ...s It may be sufficient to maintain one radiator with permanently open valves however the guidance under current Building Regulations relating to the conservation of energy recommends the fitting of an automatic by pass valve This type of valve modulates open when necessary to ensure that the appropriate minimum flow rate is maintained through the boiler at all other times it is closed thus prevent...

Page 32: ...rs 10 ENVIRONMENTAL INFORMATION Gabarrón boilers are manufactured within a certified environmental management system From the design stage all the production phases are performed taking into account the most rigorous environmental requirements For example the selection of materials involves guaranteeing their biodegradability re use and recycling When this boiler s long useful life is over it must...

Page 33: ...3 0 DHW available time with 15kW min 5 49 DHW available time with 13kW min 6 42 DHW available time with 12kW min 7 16 DHW available time with 11kW min 7 56 DHW available time with 10kW min 8 43 DHW available time with 9kW min 9 41 DHW available time with 8kW min 10 54 DHW available time with 7kW min 12 27 DHW available time with 6kW min 14 32 DHW available time with 5kW min 17 26 DHW available tim...

Page 34: ...respects to the relevant standards and regulations in force and especially to Seguridad EN 60335 1 2012 A11 2014 Safety EN 60335 2 35 2002 A1 2007 A2 2011 EN 50106 2008 EMC EN 55014 1 2006 A1 2009 A2 2011 EN 55014 2 1997 A1 2001 A2 2008 EN 61000 3 2 2006 A1 2009 A2 2009 EN 61000 3 3 2008 Información adicional Additional information El producto aquí citado lleva el marcado CE y se halla en conformi...

Page 35: ... 36 4 Useful efficiency at rated heat output and high temperature regime η4 39 5 Auxiliary electricity consumption in standby mode Psb 0 003 kW Standby heat loss Pstby 0 07 kW Sound power level indoors LWA 36 dB Seasonal space heating energy efficiency class D Water heating Declared load profile L Daily energy consumption Qelec 13 01 kWh día Annual electricity consumption AEC 2733 kWh Water heatin...

Page 36: ...36 14 WIRING DIAGRAMS ...

Page 37: ...37 ...

Page 38: ...tion commissioning checklist Section 16 at the rear of this manual has been completed The boiler has been regularly maintained as detailed in this manual Section 9 The maintenance checklist Section 17 is verified in the service record Section 18 and that the service record is up to date The boiler is only being used for domestic heating and hot water purposes The boiler has been installed in the U...

Page 39: ...let l min Time and temperature controls have been fitted in compliance with Part L of the Building Regulations Yes Type of control system if applicable Y plan S Plan Other What is the hot water temperature at the nearest outlet ºC All the appropriate pipes have been insulated up to 1 metre or the point where they become concealed Yes Where is the pressure reducing valve situated if fitted What is ...

Page 40: ...to system Fitted Not required All appropriate pipes have been insulated up to 1 metre or the point where they become concealed Yes Has the heating system discharge been connected and terminated correctly Yes The system has been flushed and cleaned in accordance with BS7593 and boiler manufacturer s instructions Yes What system cleaner was used What inhibitor was used Quantity Litres Central heatin...

Page 41: ...lled in close proximity to the boiler Yes What is the rating of the local isolation switch for the boiler circuit Amps If external controls have been installed are these powered from a separate switched and fused spur Yes Have all electrical connections been checked for tightness including factory connections to main terminals and contactor Yes Has the power setting on the boiler been adjusted to ...

Page 42: ... in connection with the boiler Manually check the operation of the heating 3 bar relief valve Check discharge pipe from heating 3 bar relief valve is free from obstruction and blockage and is not passing any water Check that the temperature set point is correct Check the pressure on the air side of the heating expansion vessel This must be done when the volume in the heating chamber is cold Check ...

Page 43: ...DATE General Heating Mains pressure Hot Water Electrical Engineer name Company name Telephone No Comments Signature SERVICE RECORD 05 DATE General Heating Mains pressure Hot Water Electrical Engineer name Company name Telephone No Comments Signature SERVICE RECORD 06 DATE General Heating Mains pressure Hot Water Electrical Engineer name Company name Telephone No Comments Signature SERVICE RECORD 0...

Page 44: ...is product may not be treated as household waste Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment By ensuring this product is disposed of correctly you will help prevent potential negative consequences for the environment and human health which could otherwise be caused by inappropriate waste handling of this product For mo...

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