Related Manuals for REMEHA Avanta 24c
Summary of Contents for REMEHA Avanta 24c
- Page 1 Great Britain High-efficiency wall-hung boilers Avanta 24c - 28c - 35c - 39c 18s - 24s - 30s Installation and service manual 127768-271011...
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Page 2: Table Of Contents
1.3 Safety during installation, inspection and maintenance 2 INSTALLATION 2.1 Scope of delivery 2.2 Mounting the boiler 2.2.1 Clearance requirements 2.2.2 Dimensions and connection points. 2.2.3 Mounting the Remeha Avanta Plus 2.3 Water-side connections 2.3.1 Water flow 2.3.2 Circulation pumps 2.3.3 A dditional guidelines for the domestic and CH water 2.3.4 Water treatment 2.3.5 Safety valve discharge... - Page 3 4.4.2 Deleting errors 5 SERVICE PARTS 5.1 General 6 EC DECLARATION 7 REGULATIONS 7.1 EC regulations 7.2 Remeha factory test 7.3 Additional guidelines 8 TECHNICAL SPECIFICATIONS AND wORkING PRINCIPLE 8.1 Technical data 8.2 The boiler components 8.3 Working principle 8.3.1 Regulating 8.3.2 Advanced boiler control (‘abc...
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Page 4: Introduction
Introduction Remeha Avanta Plus INTRODUCTION The Remeha Avanta Plus is a series of high-efficiency fully condensing central heating boilers, for wall mounting, available in the following types: • R emeha Avanta Plus 24c, 28c, 35c and 39c - with integrat- ed domestic hot water system (Combi-type) • R emeha Avanta Plus 18s, 24s, 30s - without integrated domestic hot water system (System-type) These technical instructions contain useful and important infor- mation for the correct installation, operation and maintenance of the Remeha Avanta Plus combi and system boilers. -
Page 5: Safety
Remeha Avanta Plus 1. Safety 1 SAFETY General safety The following pictograms are used in this Installation and Ser- vice manual to specifically draw certain points to your atten- tion: Useful tip or practical advice. Important instruction in carrying out a Indication particular operation. warning Possible danger of personal injury or material damage to the regulator, building or environment. - Page 6 1. Safety Remeha Avanta Plus The Remeha Avanta Plus (combi and system) is a WRAS (Water regulations) approved product. Remeha Avanta Plus (combi and system) - PIN: 0063BQ3009 Gas Council numbers: Remeha Avanta Plus 24c: 41-288-01 Remeha Avanta Plus 28c: 47-673-02 LTALW7H000074a Remeha Avanta Plus 35c: 47-673-03 Remeha Avanta Plus 39c: 47-673-04 fig. 02 WRAS logo Remeha Avanta Plus 18s: 41-288-11 LT.AL.W7H.000.074 Remeha Avanta Plus 24s: 41-288-05 Remeha Avanta Plus 30s: 41-288-12 Classification type for evacuation of the combustion products; according EN 483: see par. 8.1. Health and safety information • The weight of the Avanta Plus system and combi boilers exceed the maximum lift weight for one person. Please ensure all necessary care is taken when lifting the boiler on to the wall mounting plate. • All sealants and gaskets are free from harmful products. On first firing the boiler, a smell from the sealants and gaskets may be present and should cease after a short period.
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Page 7: Installation
Remeha Avanta Plus 2. Installation 2 INSTALLATION Scope of delivery The standard delivery of the Remeha Avanta Plus boiler includes: - The boiler (including pressure gauge and safety valve); - Mounting plate (including isolation valve set and washers); - Nylon plugs and screws for fixing mounting plate; - Copper tails 15/22 mm; - Mounting template; - Filling loop; - Warranty Leaflet (The terms and conditions of the warranty are included in the warranty leaflet, on installation of the boiler please fill in the registration card and return to Remeha);... -
Page 8: Dimensions And Connection Points
Flue duct Ø 60 mm (concentric) Condensate drain connection ¾” (standard overflow pipe size) Connection safety valve Ø 15 mm 328.5 71.5 26.5 180.75 312.5 30.5 systeem fig. 05 Dimensions and connection points of the Remeha Avanta 112952LTGBW7H005a Plus system 112952.LT.GB.W7H.005 127768-271011... - Page 9 Connection safety valve Ø 15 mm • Based on the guidelines and the required installation space, determine where to mount the Remeha Avanta Plus. • In determining the boiler position, consider carefully the flue outlet position and any pluming consequences. 26.5 180.75 247.5 312.5 30.5 combi fig. 06 Dimensions and connection points of the Remeha Avanta 112952LTGBW7H002a Plus combi 112952.LT.GB.W7H.002 127768-271011...
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Page 10: Mounting The Remeha Avanta Plus
2. Installation Remeha Avanta Plus 2.2.3 Mounting the Remeha Avanta Plus • Remove the mounting plate and template from the box. • U sing the template determine and mark the position of the three mounting holes and center line of flue, making sure the plate is absolutely level. • Drill the (Ø 10 mm) holes. • Fit the (Ø 10 mm) plugs. • Fit (Ø 8 mm) screws into the plugs. -
Page 11: Circulation Pumps
Remeha Avanta Plus 2. Installation 2.3.2 Circulation pumps The Remeha Avanta Plus 18s, 24s, 24c and 28c are fitted with the Grundfos UPR 15-60 and the Avanta Plus 30s, 35c and 39c with the UPR 15-70, two-speed circulation pumps. The control unit ensures that when the hot-water function is active, Residual head UPR 15-60 the pump runs at ‘high’. The factory setting of the pump for CH function is ‘low.’ If necessary, the service installer can adjust this to ‘high’ by switching parameter 21 (from 0 to 1) see... -
Page 12: Safety Valve Discharge
2. Installation Remeha Avanta Plus Please ensure that the new boiler plant is not in circuit when the flushing takes place, especially if cleansing chemicals are used to assist the process. It is important to check the inhibitor concentration after installa- tion, system modifications, filling the system and every service in accordance with these instructions. -
Page 13: Pressure Switch
Remeha Avanta Plus 2. Installation 2.3.6 Pressure switch A pressure switch is fitted in the boiler set to minimum operat- ing pressure of the boiler of 0.6 bar. If the water pressure in the boiler drops below 0.6 bar, the pressure switch wil lock the boiler and error code e9 appears in the display. When the central heating system has been refilled, the boiler has to be reset manually. 2.3.7 Expansion vessel An 8 litre expansion vessel (with the vessel charge set to 1.0 bar) is fitted as standard within the boiler case and is suitable for use in a heating system with a water content up to 100 litres, operating at a flow temperature of 80°C, a maximum... -
Page 14: Connecting The 'Ch Return
• F it the inlet pipe for CH water to the ‘CH return’ 22 mm Ø connection. The Remeha Avanta Plus has a drain cock built into the return isolating valve It is considered good practice to install an air separator / dirt removal device in the return to the boiler. -
Page 15: Connecting Condensate Drain
14 Connecting condensate drain LT.AL.W7H.000.018 2.3.12 Connecting under floor heating The Remeha Avanta Plus can be connected directly to an under floor heating system. If plastic pipes have been used they must be made oxygen dif- fusion proof in compliance with DIN 4726/4729 When installing under floor heating with a separate pump, the layout should be such that the under floor heating pump can- not cause a flow to the boiler if there is no heat demand. A low... -
Page 16: Adjusting Boiler To Other Gas-Type
• The gas supply must be connected, tested for soundness and purged by a qualified Engineer and in accordance with BS6891. Flue terminal and air supply connections The Remeha Avanta Plus is only suitable for room sealed operation with a standard concentric connection 60/100 mm Ø or the optional 80/125 mm Ø connection. Detailed recommendations for air supply and flue terminals are given in BS 5440. -
Page 17: Room Sealed Flue
Remeha Avanta Plus 2. Installation Positions for the Remeha Avanta Plus are shown in the figure and table 02. Dimen- Terminal location Minimum dis- sions tance to ter- minal (room 600 mm No flue must penetrate area within dotted lines sealed) 600 mm round roof light... -
Page 18: Connecting The Flue Terminal And Air Supply
2. Installation Remeha Avanta Plus For flue installations not covered by this booklet, please contact our technical help line 0118 974 3070. Roof mounted room sealed terminal 2.5.3 Connecting the flue terminal and air supply • H ow to install the horizontal or vertical flue terminal and air supply kits; please take note of the mounting instructions... -
Page 19: Electrical Connection
• 230 V supply cable connection. 112952LTGBW7H022a fig. 18 Electrical components with live 230 V 112952.LT.GB.W7H.022 2.6.1 The control unit The Remeha Avanta Plus has an electronic regulation and control unit with an integrated ionisation flame detector. The heart of the boiler control unit is a microprocessor, the ‘abc ®’ which controls and protects the boiler. The maximum rated input is between 115 and 180 W (depend- ing on boiler type). -
Page 20: Connecting External Controls
Control unit characteristics Any loads other than those specified above are only allowed if an isolating transformer is used. The output of the Remeha Avanta Plus can be controlled in the following ways: Options 1. On/off control – volt free switching - The boilers internal control will modulate the output to achieve the flow tem- perature set point of the boiler. This contact is on the con- nectors 7 and 8 on terminal block X9 (low voltage only). - Page 21 Remeha Avanta Plus 2. Installation Terminal Block X2 Power supply to external time clock -230v Switch live (230v) from external time clock DHW demand Remove existing link 4-3 to use this function Exist links Switch live (230v) from external time clock HTG demand...
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Page 22: On/Off Control - Room Temperature (Volt Free Switching)
On/off control – room temperature (volt free switching) The Remeha Avanta Plus can be connected to a 2-wire on/ off volt free heating control, programmer or thermostat, ie Remeha Celcia 10. Mount the thermostat in a reference room usually the living room. • R emove existing link between connectors 7 and 8 of the X9 terminal block before use; • C onnect the 2-wire programmer or room thermostat to connectors 7 and 8 of the X9 terminal block. -
Page 23: Connecting A 230 V Time Clock In Combination With A Modulating Room Control
- timed room compensa- tion heating 2.7.4 Modulating control – room or outside compensation The Remeha Avanta Plus has an OpenTherm interface. This ® enables our modulating range of OpenTherm room controls ®... -
Page 24: Connecting An Outside Temperature Sensor
OpenTherm is an industry standard modulating control avail- ® able from several control manufacturers. The Remeha Avanta Plus can therefore be controlled directly by any other controls with this OpenTherm logo ® 2.7.5 Connecting an outside temperature sensor An outside temperature sensor can be connected to connec- tors 1 and 2 of the X9 terminal block. -
Page 25: Connecting The Dhw Sensor/Thermostat
Remeha Avanta Plus 2. Installation 2.7.6 Connecting the DHW sensor/thermostat • I f an external DHW calorifier is being used with the Avanta Plus system boiler a volt-free DHW control sensor or ther- mostat can be connected to connectors 3 and 4 of the X9 terminal block. The control will automatically detect whether a sensor or a thermostat has been connected. -
Page 26: Connecting An External Interlock
2. Installation Remeha Avanta Plus 2.7.8 Connecting an external interlock The Remeha Avanta Plus is supplied with an external interlock function. A volt free switching device (i.e. external gas pres- sure switch, safety thermostat for under floor heating) can be connected to connectors 5 and 6. When this circuit is open the boiler will shut down with the display showing (code 9) and will restart when the circuit is closed. 2.7.9 Connecting remote alarm, boiler run indication and external pump relay As standard the boiler is supplied with 3 volt free connectors on terminal X7. They can be used for an external gas valve, remote alarm and boiler run indication. -
Page 27: Wiring Diagram
Remeha Avanta Plus 2. Installation wiring diagram 4 5 1 1 2 3 4 5 1 2 3 4 1 2 3 4 1 2 3 1 2 3 1 2 3 4 1 2 3 4 5 6 7 8 1 10 COMM. -
Page 28: Commissioning
Remeha Avanta Plus Commissioning 2.9.1 Control Panel The control panel of the Remeha Avanta Plus has 4 function keys and a LED display. The function keys are used to read or change the settings and temperatures. The display has two positions and displays information on the current operating status of the boiler and any errors. - Page 29 Remeha Avanta Plus 2. Installation 1. Isolating the power supply and opening the front cover • Switch off the boiler at the fused spur and remove the fuse; • R emove the front panel (release the two screws at the bot- 230 V tom of the front panel, pull the bottom of the panel; forward and lift off the two pins on the top of the main casing). 2. Checking the connections and making the boiler LTALW7H000037c operational fig. 35 Isolating power LT.AL.W7H.000.037 ...
- Page 30 2. Installation Remeha Avanta Plus • O pen the boiler gas valve and check the static pressure to the boiler at the measurement point (C) on the gas block. The boiler has been factory tested for natural gas at 20 mbar. The minimum gas inlet pressure is 17 mbar for natural gas (see par. 2.4.3). • C heck that the gas supply to the boiler is gas tight (in compliance with the current regulations, see chapter 7 the maximum test pressure at the gas pipe inlet, with the boiler gas valve open, is 60 mbar.
- Page 31 Remeha Avanta Plus 2. Installation Combustion checking/setting must be carried out by a com- petent person. It must not be carried out unless that person is equipped with a combustion analyser which conforms to the relevant British Standards. When checking/setting the air/gas ratio setting in full load it...
- Page 32 2. Installation Remeha Avanta Plus • U nscrew the flue gas sampling cap and connect the flue gas analyser. • S et boiler to full load: Press the [enter]-key, keep it pressed and also press the [+]-key until h3 appears in the display; full load has been set. • O nce the unit has reached the full-load fan speed, measure the O -percentage and compare this to the values in table 05.
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Page 33: Preparing The Boiler For Use
Remeha Avanta Plus 2. Installation Checking/setting values O for LPG (propane) Fan speed (rpm) boiler type Part load l3 *) approx. 2000 5.1 ± 0.1 10.5 ± 0.1 approx. 2000 5.1 ± 0.1 10.5 ± 0.1 approx. 2000 5.1 ± 0.1 10.5 ±... -
Page 34: Normal Start-Up Procedure
• C omplete the type plate in the boiler by adding the gas type. • F ill in Commissioning sheet, located on the inside back of this document. The boiler is now ready for operation. The Remeha Avanta Plus is delivered pre-tested and operating 112952LTGBW7H045a parameters set up with standard factory settings to suit the most common systems. These setting can be adjusted to suit fig. 43 Instructing the user specific site conditions but must not be changed without refer- 112952.LT.GB.W7H.045... -
Page 35: Error During The Start-Up Procedure
Remeha Avanta Plus 2. Installation 2.9.5 Error during the start-up procedure • I f the display is blank (should show LEDs or letters), check: - 230 V main supply available to switch spur - Switch spur fuse - C able and connections between the switched spur and the boiler control unit - Fuse on the boiler control unit (F2 = 2AT, 230V) • A n error code appearing in the display can be recognised as follows: e10, (the display alternately shows an e and a number e.g. 10). The meaning of this error codes can be found in the error table, see Chapter 4. -
Page 36: Read Out Settings
The operating parameters of the Remeha Avanta Plus have been factory set to suit most systems. However it is possible to adjust some of the parameters to enable the Remeha Avan- ta Plus to operate more efficiently to match specific system designs and site conditions. These parameters are split into two specific sections 1. -
Page 37: Changing The Parameters At Service Level (With Access Code)
Remeha Avanta Plus 2. Installation 2.9.8 Changing the parameters at service level (with access code) To avoid non authorised adjustments, some parameter settings can only be changed once the special access code 12 has been entered. This code may only be used by qualified install- ers. The following settings can be changed at user and service... - Page 38 2. Installation Remeha Avanta Plus Factory settings Codes in display Description Setting range and notes where applicable 0 = off 1 = on 2 = automatic (after putting boiler into opera- Legionella protection tion, it will run for DHW operation 65°C once a week) DHW cut-in temperature 2 - 15°C Heat curve set point 0 - 60°C...
- Page 39 Remeha Avanta Plus 2. Installation Factory settings Codes in display Description Setting range and notes where applicable Maximum fan speed DHW Do not change *** (natural gas) Maximum fan speed DHW Adjustments for (propane) propane firing Minimum fan speed (CH and DHW) Do not change ***...
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Page 40: Changing The Maximum Output (Hi) For Ch Operation
2. Installation Remeha Avanta Plus Changing the factory settings could result in the boiler not working properly. fig. 45 Change parameters in service level LT.AL.W7H.000.047 • P ress the [enter]-key and briefly the [reset]-key until codes c and 0 appear alternately in the display. - Page 41 Remeha Avanta Plus 2. Installation fig. 48 Fan speed / boiler input ratio Avanta Plus 39c LT.AL.W7H.000.051 The speed-input ratio figures for Avanta Plus 18s, 24s and 24c are equal to 28c. 2.9.10 Restore factory settings The factory settings can be restored in the service level as fol-...
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Page 42: Restore Factory Settings
2. Installation Remeha Avanta Plus fig. 49 Restore factory settings 2. Press [Enter]-key; xx appears; LT.AL.W7H.000.052 3. Read boiler identification plate for value of df ; press [+] or [-] key to reach this value; 4. Press [Enter]-key to confirm; dV and yy appear alter- nately; 5. Read boiler identification plate for value of dV ; press [+] or [-] key to reach this value;... -
Page 43: Inspection And Maintenance
All service and maintenance must be carried out by a qualified Engineer with the relevant training and certification (i.e. ACS - IEE registrations etc). Inspection The annual inspection of the Remeha Avanta Plus can be lim- ited to the following checks: - Check the water pressure, see par. 3.1.1; - Check the flue pipes and air supply pipes for leaks, see par. -
Page 44: Checking The Water Pressure
3. Inspection and maintenance Remeha Avanta Plus Min. 1 bar 3.1.1 Checking the water pressure The water pressure should be checked against the commission- ing entry located on the inside back of this document (min 1 bar). • I f necessary, re-fill system to design pressure and re-set red pointer to match fill pressure. Check system for leaks if the system needs re-filling more than 3 times per year. -
Page 45: Checking The Condensate Siphon
Remeha Avanta Plus 3. Inspection and maintenance 3.1.3 Checking the condensate siphon • C heck the condensate siphon. Remove any dirt residues and refill with clean water to the mark. T001775-A fig. 53 Checking siphon 3.1.4 Checking the ignition electrode T001775 • Check the ionisation /ignition electrode for: - D eposits (remove any white deposits with abrasive cloth); - T he adjustment of the ignition electrode (between 3 and 4 mm); - The quality of the gasket and condition of the porcelain (this should not be cracked) inspect and replace if neces- sary;... - Page 46 3. Inspection and maintenance Remeha Avanta Plus Checking values O for natural gas H / L boiler- Fan speed (rpm) type Full load h3 Part load l3 approx. 3500 approx. 1300 5.2 ± 0.2 8.8 ± 0.3 approx. 4300 approx. 1300 5.2 ±...
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Page 47: Maintenance
• During regular maintenance inspections the integrity of all combustion circuit seals, especially the burner door seal must be checked for potential leaks. If any evidence of seal leakage is detected then Remeha strongly recommend the gasket making the seal is replaced. • Any gasket that is exposed during maintenance or inspection should always be replaced. • A service gasket set and new ignition/ionisation electrode is... - Page 48 3. Inspection and maintenance Remeha Avanta Plus 3. Dismantling the front plate of the heat exchanger • R elease the ignition transformer mounting plate and remove it completely. • Disconnect the electrical connection on the gas block. • R elease the union nut from the gas pipe on the outlet to the gas block. • Release the four nuts on the heat exchanger front plate • C arefully pull the front plate assembly c/w fan, gas block, venturi pipe and burner unit away from the heat exchanger by approx. 10 cm.
- Page 49 Remeha Avanta Plus 3. Inspection and maintenance 5. Maintenance to the heat exchanger (CH) • C heck the seal between the front plate and the heat exchanger and the insulation section. • H andle the fragile front-plate insulation and the back-plate insulation of the heat exchanger with great care and do not let them get wet. • V isual inspection of the heat exchanger for scale or dirt. If you see obvious deposits, than clean the heat exchanger carefully. Carefully remove any loose dirt with a vacuum...
- Page 50 3. Inspection and maintenance Remeha Avanta Plus If a cleaning operation becomes necessary, please proceed as follows: • T urn off the mains cold water supply and drain off the resid- ual DHW; • R elease two socket head screws and remove plate heat exchanger • C lean plate heat exchanger with scale solvent (e.g. citric acid, pH 3); a special cleaning tool (optional accessory) can be used; • Thoroughly cleaning afterwards with clean water; • R emove non return valve with filter from on the right hand side of the hydro block and also clean with the scale sol- vent; afterwards thoroughly cleaning with clean water.
- Page 51 Remeha Avanta Plus 3. Inspection and maintenance 7. Re-Assembling the boiler and checking the combustion • Re-assemble all the components in reverse order. • C heck that the packing between the front plate and the heat exchanger has been fitted correctly. • Fill the system with water. • Switch the boiler back on. • Check the CO -percentage, see par. 2.9.3, point 4.
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Page 52: Errors
4. Errors Remeha Avanta Plus 4 ERRORS General The Remeha Avanta Plus has an advanced control unit. The heart of this control unit is a microprocessor, the abc -control ® which both controls and protects the boiler. If an error is detected anywhere in the boiler, it will lock-out and an error code will appear in the display. Error codes The Remeha Avanta Plus displays the error codes as follows: e2 (the display alternately shows an e and a number e.g. 2) The meaning of the various error codes can be found in the error table, see table 13. - Page 53 Remeha Avanta Plus 4. Errors Error Description Possible cause Check / solution code Check: • the connection between the ignition wire and the ignition trafo; No ignition spark. • the ignition wire and electrode for ‘dielectric breakdown’; • the inter-electrode distance, this should be 3-4 mm; that the ignition electrode is properly earthed. A spark but no flame. Check that: • the gas tap is open; • the gas pre-pressure is sufficient; • the gas pipe is de-aerated;...
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Page 54: Control Stop Or Lock-Out
13 Error codes * W hen sensors have been taken out, be sure to replace them max. 40 mm underneath heat exchanger. If you read out a not listed error, please report to Remeha. Control stop or lock-out The code K8 , K5 or K9 can appear in the display. Temperature/resistance diagram • Code K8 is a control stop and will appear if the measured... -
Page 55: Error Memory
Remeha Avanta Plus 4. Errors Error memory The Remeha Avanta Plus control unit has an error memory, in which the last 16 errors are stored. In addition to the error code ( and a number xx). The following data is also stored: • the number of times the error occurred (n and a number • the operating status of the boiler (5t and a number xx) • the flow temperature (t1 and the value xx) return tem- perature (t2 and the value xx) at the time the error occurred. -
Page 56: Service Parts
Remeha Avanta Plus 5 SERVICE PARTS General If, following the annual inspection or maintenance any part of the boiler is found to need replacing, use Remeha spare parts only or spare parts and materials recommended by Remeha. If any component is to be replaced and it is covered by the terms and condition as described in the warranty leaflet, return the faulty component to Remeha with the details as show in table 14. - Page 57 5019 5027 5032 4002 3017 5020 3014 5022 3016 3014 5021 5030 2026 5022 5020 4009 5026 5023 5021 5031 4007 5019 5024 5020 3015 5020 4004 5025 5023 fig. 66 Exploded view Remeha Avanta Plus (combi) T001931-B T001931 127768-271011...
- Page 58 5. Service parts Remeha Avanta Plus break down parts kit Part No Description Position S62743 Electrode ignition/ionisation 2004 S62728 Vent auto air bleed device 2010 S62746 Pump for 18s, 24s, 30s, 24c and 28c 2011 S62747 Pump for 35c and 39c...
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Page 59: Ec Declaration
Remeha Avanta Plus 6. EC declaration 6 EC DECLARATION EC – DECLARATION OF CONFORMITY Manufacturer : Remeha B.V. Address : Kanaal Zuid 110 Town, Country : Postbus 32, NL-7300 AA Apeldoorn - hereby declares that the appliance(s) : Remeha Avanta Plus comply / complies with the specifications of the following EEC directives: EEG Directive: 90/396/EEG applied standards: (pr)EN 297 , 483 , 625 , 677 (1994) (1999) (1995) (1998) 73/23/EEG (pr)EN 50165 , 60335-1... -
Page 60: Regulations
- 92/42/EEC Efficiency directive - 73/23/EEC Electrical low voltage directive - 89/336/EEC EMC directive - 97/23/EEC Pressure equipment directive (art. 3, sub. 3) Classification type for evacuation of the combustion products; according EN 483 Remeha factory test Before it leaves the factory, each Remeha Avanta Plus boiler is optimally adjusted and tested for: - Electrical safety; - CO2- adjustment; - Hot water function - Water tightness; - Gas tightness;... -
Page 61: Technical Specifications And Working Principle
Remeha Avanta Plus 8. Technical specifications and working principle 8 TECHNICAL SPECIFICATIONS AND wORkING PRINCIPLE Technical data Appliance type Remeha Avanta Plus combi combi combi combi General 41-288-01 47-673-02 47-673-03 47-673-04 Gas council numbers modulating or on/off Boiler control Nominal output Pn (80/60°C) (CH) 20.0 21.6 29.4 33.3... - Page 62 8. Technical specifications and working principle Remeha Avanta Plus Appliance type Remeha Avanta Plus system system system General 41-288-11 41-288-05 41-288-12 Gas council numbers modulating or on/off Boiler control Nominal output Pn (80/60°C) (CH) 18.0 21.6 29.4 Nominal output Pn (50/30°C) (CH) 19.1 23.0 31.3 Nominal input Qn 5.8 - 18.3 5.8 - 22...
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Page 63: The Boiler Components
13. Ignition/ionization electrode 14. Stand off frame (optional) 15. Water pressure switch working principle The Remeha Avanta Plus casing serves as a sealed air box, with air drawn in by the fan. On the outlet side of the fan is a venturi, into which a measured quantity of gas is injected based on the volume of air available. The fan speed con- trol is dependent on the settings of the external control, the advanced boiler controller ‘abc... -
Page 64: Regulating
® a different position. The plate heat exchanger is protected from debris by two fil- ters one in the cold water supply and one in the primary flow to the diverting valve – Note: the primary flow filter self cleans when the flow reverts back to heating mode. System boiler operation The Remeha Avanta Plus 18s, 24s and 30s have the same design and layout as the combi range without the DHW com- ponents (three way valve and plate heat exchanger). 8.3.1 Regulating The Remeha Avanta Plus is a fully modulating boiler and can be regulated using one or more of the following methods; 1. O pen Therm – 2 wire interface compatible with the Remeha qSense room compensator and the Remeha iSense outside weather compensator or with any other proprietor’s Open-... -
Page 65: Low Flow / Water Protection
®’ mode with the display showing (code 9) for 10 minutes and before re-starting. If there is no water in the boiler or if the pump is not running, it will go to lock out (code e7) and require manual re-set. Where Low Flow Taps or Fittings are intended to be used in DHW systems connected to Remeha Combination Boilers it is strongly recommended that the DHW flow rate DOES NOT fall below 2.5 l/min to ensure reliable operation. 8.3.5 Pressure switch The Remeha Avanta Plus has a pressure switch. Error code e9 is displayed when pressure is bellow 0.6 bar. When the central heating system has been refilled, the boiler has to be reset manually. -
Page 66: Efficiency Data And Gas Efficiency Labels
9. Efficiency data and gas efficiency labels Remeha Avanta Plus 9 EFFICIENCY DATA AND GAS EFFICIENCY LAbELS Annual efficiency 110.5 % in relation to Hi at a load of 30% and a return tem- perature of 30°C. water-side efficiency 98 % in relation to Hi at full load and an average water tem- perature of 70°C (80/60°C). - Page 67 Remeha Avanta Plus 127768-271011...
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Page 68: Gas Boiler System Commissioning Checklist
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 appropriate 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. -
Page 69: Service Record
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. - Page 72 Remeha - PART OF BDR THERMEA Brooks House Coventry Road Warwick CV34 4LL After Sales Tel: 0844 879 7690 Technical Enquires: 0118 974 3070 Internet: www.remehaheating.co.uk © Copyright All technical and technological information contained in these technical instructions, as well as any drawings and technical descriptions supplied, remain our property and shall not be multiplied without our prior consent in writing. Subject to alterations 127768-271011 127768...
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