REMEHA Avanta Range 24c Installation & Service Manual
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REMEHA Avanta Range 24c Installation & Service Manual

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Remeha Avanta Range
24c | 28c | 35c | 39c | 18s | 24s | 30s

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  • Page 1 Installation & Service Manual Remeha Avanta Range 24c | 28c | 35c | 39c | 18s | 24s | 30s...

  • Page 2: Table Of Contents

    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 fl ow 2.3.2 Circulation pumps 2.3.3 Additional guidelines for the domestic and CH water 2.3.4...
  • 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...

  • Page 4: Introduction

    The Remeha Avanta Plus is a series of high-efficiency fully condensing central heating boilers, for wall mounting, available in the following types: • Remeha Avanta Plus 24c, 28c, 35c and 39c - with inte- grated domestic hot water system (Combi-type) • Remeha Avanta Plus 18s, 24s, 30s...

  • Page 5: Safety

    Safety during installation, inspection and maintenance Under the current Gas Safety (Installation & Use) Regulations, the Remeha Avanta Plus, in common with all gas appliances, must be installed by a competent person in accordance with that regulation. Statutory regulations in any country, cannot be overridden by any of the notes or instructions from the manufacturer.
  • Page 6 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 fi g. 02 WRAS logo Remeha Avanta Plus 28c: 47-673-02 LT.AL.W7H.000.074...

  • Page 7: Installation

    Assembly Instructions supplied with these accessories. Mounting the boiler Packed in the box with the Remeha Avanta Plus box is Instructie service this Installation and Service manual. Read instructions and AvantaPlus remarks carefully.

  • 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 fi g. 05 Dimensions and connection points of the Remeha Avanta Plus system 112952.LT.GB.W7H.005...
  • Page 9  Connection safety valve Ø 15 mm 328.5 71.5  • 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...

  • Page 10: Mounting The Remeha Avanta Plus

    Remeha Avanta Plus 2.2.3 Mounting the Remeha Avanta Plus • Remove the mounting plate and template from the box. • Using the template determine and mark the position of the three mounting holes and center line of flue, making sure the plate is absolutely level.

  • Page 11: Circulation Pumps

    2.3.2 Circulation pumps The Remeha Avanta Plus 18s, 24s, 30s, 24c and 28c are fitted with the Grundfos UPR 15-60 and the Avanta Plus 35c and 39c with the UPR 15-70, two-speed circulation pumps. The control unit ensures that when the hot-water function is active, the pump runs at ‘high’.

  • Page 12: Safety Valve Discharge

    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: Expansion Vessel

    2.3.6 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 pressure of 3 bar and a maximum system static head of 5 metres above the boiler.

  • Page 14: Connecting The 'Ch Return

    • Fit 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

    Connecting condensate drain LT.AL.W7H.000.018 2.3.11 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...

  • Page 16: Adjusting Boiler To Other Gas-Type

    2 m above the ground, balcony, or flat roof where access by persons is possible a suitable guard must be employed.  The boiler will produce a water vapour plume during normal operation. Positions for the Remeha Avanta Plus are shown in the figure and table 02.

  • Page 17: Room Sealed Fl Ue

    See table 03 for the maximum pipe length of flue ducts and air supply pipes for this ‘room sealed’ application. It is not necessary to provide combustion air to the room or internal space in which the boiler is installed. 18s/24s/30s 24c/28c VRS roof Diameter in mm Ø 60/100 80/125...

  • Page 18: Connecting The Fl Ue Terminal And Air Supply

    Remeha Avanta Plus  For flue installations not covered by this booklet, please contact our technical help line 0118 978 3434. 2.5.3 Connecting the flue terminal and air supply VRS roof mounted room sealed • How to install the horizontal or vertical flue terminal and air terminal supply kits;...

  • Page 19: Electrical Connection

    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 ®’...

  • Page 20: Connecting External Controls

    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.
  • Page 21 Terminal Block X6 230v - 3 Amp Power Supply Terminal Block X7 Common Alarm (Closes on alarm) Boiler Run or external pump relay (Closes on run) Terminal Block X5 Neutral For external DHW priority diverting valve on System boiler Open valve to DHW (230v) when used in conjunction with "Open Therm"...

  • Page 22: On/Off Control - Room Temperature (Volt Free Switching)

    2.7.1 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.

  • Page 23: Connecting A 230 V Time Clock In Combination With A Modulating Room Control

    This ® enables our modulating range of OpenTherm room controls ® (e.g. the Remeha Celcia 15 or 20) to be connected without any further modifications. • Mount the control in a reference room (usually the living Terminal room). Block X9 •...

  • Page 24: Connecting An Outside Temperature Sensor

    Remeha Avanta Plus If the DHW water temperature on the OpenTherm ® control can be adjusted, then the Remeha Avanta Plus will supply water at the temperature determined on the OpenTherm with the ® maximum being set in the boiler.

  • Page 25: Connecting The Dhw Sensor/Thermostat

    2.7.6 Connecting the DHW sensor/thermostat • If an external DHW calorifier is being used with the Avanta Terminal Plus system boiler a volt-free DHW control sensor or ther- Block X9 mostat can be connected to connectors 3 and 4 of the X9 terminal block.

  • Page 26: Connecting An External Interlock

    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 of the X9 terminal block after removing the existing link.

  • Page 27: Wiring Diagram

    Wiring diagram Power supply 230V, 50Hz GN/YW GN/YW 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

    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 • Switch off the boiler at the fused spur and remove the fuse; 230 V • Remove the front panel (release the two screws at the bot- 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.
  • Page 30 Remeha Avanta Plus • Open 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 2.4.3).
  • Page 31  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 may be necessary to run water through the domestic hot water circuit to allow time for this part of the procedure, this will pre- vent the boiler from cycling on low heating demands (Combi...
  • Page 32 Remeha Avanta Plus • Unscrew the flue gas sampling cap and connect the flue gas analyser. • Set boiler to full load: Press the [enter]- key, keep it pressed and also press the [+]-key until h3 appears in the display;...

  • Page 33: Preparing The Boiler For Use

    Checking/setting values O for LPG (propane) Fan speed (rpm) Boiler type Part load l3 *) 10.5 approx. 2000 ± 0.1 ± 0.1 10.5 approx. 2000 ± 0.1 ± 0.1 10.5 approx. 2000 ± 0.1 ± 0.1 10.5 approx. 2000 ± 0.1 ±...

  • Page 34: Normal Start-Up Procedure

    The boiler is now ready for operation.  The Remeha Avanta Plus is delivered pre-tested and operating parameters set up with standard factory settings to suit the most common systems. These setting can be adjusted to suit fi g. 42...

  • Page 35: Error During The Start-Up Procedure

    2.9.5 Error during the start-up procedure • If the display is blank (should show LEDs or letters), check: - 230 V main supply available to switch spur - switch spur fuse - cable and connections between the switched spur and the boiler control unit - fuse on the boiler control unit (F2 = 2AT, 230V) •...

  • 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.

  • Page 37: Changing The Parameters At Service Level (With Access Code)

    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 installers. The following settings can be changed at user and service level: Setting range and notes where applica- Factory settings Codes in display...
  • Page 38 Remeha Avanta Plus Heat curve set point 0 - 60 °C flow temperature Heat curve set point 0 - 30 °C outside temperature (min) Heat curve set point -40 - 0 °C - 15** outside temperature (max) 0 = combi...
  • Page 39 Starting fan speed Do not change 0 = low Pump setting CH 1 = high Pump running time after CH 1 - 99 minutes Connection with Heat 0 = no connection with HRU Recovery Unit (HRU) 1 = connection with HRU 0 = off (connectors 1 and 2 closed) 1 = alarm signal...

  • Page 40: Changing The Maximum Output (Hi) For Ch Operation

    Remeha Avanta Plus  Changing the factory settings could result in the boiler not working properly. The parameters can be changed from the stand-by status as follows: • Press the [enter]-key and briefly the [reset]- key until codes c and 0 appear alternately in the display.
  • Page 41 The speed-input ratio figures for Avanta Plus 18s, 24s and 24c are equal to 28c. fi g. 46 Fan speed / boiler input ratio Avanta Plus 28c LT.AL.W7H.000.050 The speed-input ratio figure for Avanta Plus 30s, 35c are equal to 39c.

  • Page 42: Restore Factory Settings

    Remeha Avanta Plus 2.9.10 Restore factory settings The factory settings can be restored in the service level as fol- lows: 1. After parameter p31 has shown, press the [+]-key; d f and xx appear alternately; 2. Press -key; xx appears;...

  • Page 43: Inspection And Maintenance

    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

    Remeha Avanta Plus 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). • If necessary, re-fill system to design pressure and re-set red pointer to match fill pressure 2 bar.

  • Page 45: Checking The Condensate Siphon

    3.1.3 Checking the condensate siphon • Check the condensate siphon. Remove any dirt residues and refill with clean water to the mark. fi g. 52 Checking siphon T001775 3.1.4 Checking the ignition electrode • Check the ionisation /ignition electrode for: - deposits (remove any white deposits with abrasive cloth);...
  • Page 46 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 ± 0.2 ± 0.3 approx. 4300 approx. 1300 ± 0.2 ± 0.3 approx. 5200 approx.

  • Page 47: Maintenance

    Maintenance To conduct maintenance:  Ensure that a service gasket set and new ignition/ionisation electrode is available before carrying out this procedure. 230 V  • Isolate power supply at the fused spur before carrying out any work on the boiler. 1.
  • Page 48 Remeha Avanta Plus 3. Dismantling the front plate of the heat exchanger • Release the ignition transformer mounting plate and remove it completely. • Disconnect the electrical connection on the gas block. • Release the union nut from the gas pipe on the outlet to the gas block.
  • Page 49 5. Maintenance to the heat exchanger (CH) • Check the seal between the front plate and the heat exchanger and the insulation section. Replace sealing. • Handle the fragile front-plate insulation and the back-plate insulation of the heat exchanger with great care and do not let them get wet.
  • Page 50 Remeha Avanta Plus If a cleaning operation becomes necessary, please proceed as follows: • Turn off the mains cold water supply and drain off the resid- ual DHW; • Release two socket head screws and remove plate heat exchanger • Clean plate heat exchanger with scale solvent (e.g. citric acid, pH 3);...
  • Page 51 7. Re-Assembling the boiler and checking the combustion • Re-assemble all the components in reverse order.  • Check that the packing between the front plate and the heat exchanger has been fitted correctly. • Fill the system with water. •...

  • Page 52: 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 -con- ® trol 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.
  • Page 53 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.

  • Page 54: Control Stop Or Lock-Out

    Remeha Avanta Plus Error Description Possible cause Check / solution code Replace d f / d U settings, see Par. 2.9.10 Parameter limits Automation settings é43 If this error code still returns after resetting; please contact Broag. Replace d f / d U settings, see Par. 2.9.10...

  • Page 55: Error Memory

    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 (é and a number xx). The following data is also stored: • the number of times the error occurred (n and a number xx) •...

  • Page 56: 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...
  • Page 57 5030 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 fi g. 65 Exploded view Remeha Avanta Plus (combi) 112952.EV.GB.W7H.000...
  • Page 58 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 2011 S58733 Sensor temperature (2 pcs.) 2013 S62733 Gauge pressure c/w capilliary...

  • Page 59: Ec Declaration

    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...

  • Page 60: Regulations

    - 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;...

  • Page 61: 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 Boiler control modulating or on/off Nominal output Pn (80/60°C) (CH) 20.0 21.6 29.4 33.3 Nominal output Pn (50/30°C)
  • Page 62 Remeha Avanta Plus Appliance type Remeha Avanta Plus system system system General Gas council numbers 41-288-11 41-288-05 41-288-12 Boiler control modulating or on/off 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...

  • Page 63: The Boiler Components

    Combi boiler operation The Remeha Avanta Plus 24c, 28c, 35c and 39c are combi- nation boilers with an integral plate heat exchanger provid- ing instant domestic hot water. On opening a hot water tap, detected by a flow sensor, which is located on the cold water inlet side of the heat exchanger detects the demand.

  • Page 64: Regulating

    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).

  • Page 65: High Limit Temperature Protection

    8.3.4 Low flow / water protection The Remeha Avanta Plus has a low-water protection based on temperature readings. By modulating down as soon as there is a risk of an insufficient water flow, the boiler will keep work- ing for as long as possible. An insufficient water flow, however caused, - indicated by a flow/return dt ] 45°C or a rate of...

  • Page 66: 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 68 Remeha Avanta Plus...
  • Page 70 Remeha Avanta Plus...
  • Page 72 120577-060309 Broag Ltd. Remeha House Molly Millars Lane RG41 2QP WOKINGHAM, Berks. Tel: +44 118 9783434 Fax: +44 118 9786977 © Copyright Internet: uk.remeha.com All technical and technological information contained in these technical instructions, as well as any drawings and technical www.avantarange.com...

This manual is also suitable for:

Avanta range 28cAvanta range 24sAvanta range 35cAvanta range 30sAvanta range 39cAvanta range 18s

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