Atag Q 25S Installation & Servicing Instructions Manual
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Atag Q 25S Installation & Servicing Instructions Manual

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I n s t a l l a t i o n & S e r v i c i n g
Boiler
G.C No
Q 25S
41-310-08
Q 38S
41-310-09
Q 51S
41-310-10
Q 60S
41-310-11
Q 25C
47-310-10
Q 38C
47-310-11
Q 51C
47-310-12
CE PIN 0063BQ3021
These instructions to be retained by user.
Instructions

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  • Page 1 I n s t a l l a t i o n & S e r v i c i n g Instructions Boiler G.C No Q 25S 41-310-08 Q 38S 41-310-09 Q 51S 41-310-10 Q 60S 41-310-11 Q 25C...

  • Page 2: Explanations Of Symbols And Signs On The Control Tower Display

    Explanations of symbols and signs on the Control Tower display. Operation indication (in the first display position by technical read out) No heat requirement Ventilation phase Ignition phase Burner active on central heating Burner active on hot water Fan check Burner off when room thermostat is demanding Pump overrun phase for central heating Pump overrun phase for hot water...

  • Page 3: Table Of Contents

    Content Introduction ............................4 Rules ............................4 Scope of the supply ........................6 Description of the boiler .........................6 Mounting the boiler .........................8 Connecting the boiler ........................9 Central heating system .......................9 Expansion vessel ......................11 Underfloor heating system (plastic pipes) .................12 Water quality ........................12 Gas connection .........................14 Hot water supply .......................14 Condensation drain pipe ....................15...

  • Page 4: Introduction

    Bord Gais installers in connection with the installation and putting into operation of ATAG boilers. It is advisable to read these instructions thoroughly, well in advance of installation. Separate instructions for use are supplied with the boiler for users of ATAG central heating boilers.
  • Page 5 British Standards. The ATAG Q boiler is a certified appliance and must not be modified or installed in any way contrary to this Installation Manual. Manufacturers instructions must not be taken in any way as overriding statutory obligations.

  • Page 6: Scope Of The Supply

    • Benchmark logbook. Description of the boiler Room sealed boiler The ATAG Q boiler is a room sealed, condensing and modulating central heating boiler, The boiler retreives its with or without an integrated hot water facility. combustion air to out- side then discharges The boiler is provided with a compact stainless steel heat exchanger with smooth tubes.
  • Page 7 13 14 ATAG Q figure 4.a 1 heat exchanger 9 cylinder DHW (Combi) 17 combustion air supply 2 ignition unit 10 operating panel 18 air box 3 fan unit 11 Control Tower (CMS) 19 type plate 4 air inlet damper...

  • Page 8: Mounting The Boiler

    Mounting the boiler Install the boiler in a well-ventilated boiler room in accordance to the actual local regulations BS5440-2:2000. The room where the boiler will be placed must always be frost free. It is NOT necessary to have a purpose provided air vent in the room or internal space in which the boiler is installed.

  • Page 9: Connecting The Boiler

    A low velocity header must be connected to the Q51C, Q51S and Q60S to prevent flow problems over the boiler. ATAG supplies the AA1OV09U Low velocity header for 1 boiler. This can be connected directly under the boiler on the flow and return pipe.
  • Page 10 If the installation resistance is higher than the stated value the pump will rotate at maximum pump capacity and the load will be adjusted until an acceptable temperature difference between flow and return water has been obtained. If, after this, the temperature difference remains to much then the boiler will switch itself off and wait until an acceptable temperature has arisen (DT 20°C).

  • Page 11: Expansion Vessel

    6.2 Expansion vessel The central heating system must be provided with an expansion vessel. The expansion vessel which is used should be geared to the water content of the installation. The pre- charge pressure depends on the installation height above the mounted expansion vessel. See table 6.2.a.

  • Page 12: Underfloor Heating System (Plastic Pipes)

    Another possibility is to remove the pollution by installing a filter. The filter type has to fit the type and grain size of the pollution. ATAG Heating UK Ltd recommends filter usage. In this case, the whole piping system should be taken into consideration.
  • Page 13 Parameter Value Water type Potable water Softened water 6.0-8.5 Conductivity (at 20°C in µS/cm) Max. 2500 Iron (ppm) Max. 0.2 Hardness (°dH): Installation volume/capacity 1-12 <20 l/kW Installation volume/capacity >=20 l/kW Oxygen No oxygen diffusion allowed during operation. Max. 5% filling water addition annually Corrosion inhibitors Refer to Additives Attachment pH increasing or lowering agents...

  • Page 14: Gas Connection

    Make sure that the gas pipe work does not contain dirt, particularly with new pipes. When the boiler has to be converted from natural gas to LPG, ATAG provides special kits for this purpose. Special instructions are supplied with the kit.

  • Page 15: Condensation Drain Pipe

    ATAG Condensing boilers have the top SEDBUK band A Classification for high energy efficiency in heating and domestic hot water. All ATAG wall hung gas fired condensing boilers contain a syphonic condensate trap to collect and realease condensate. The amount of condensate formed is determind by the type of boilers and the water temperature produced by the boiler.
  • Page 16 Final discharge options. The condensate pipe can only terminate into any one of the five areas as shown in the diagrams on this page. Draining of the condensation water to the external rain guttering is not permitted in view of the danger of freezing. Before putting the boiler into operation fill the syphon with 300 ml of water.
  • Page 17 ] Ireland: Irish standard is 813 section 9.10.1 Furthermore: Boiler Class indicated on the boiler’s type plate (Flue category) Locally applicable rules. The supplier’s installation instructions When in doubt or if you have any questions, always contact ATAG HEATING.

  • Page 18: Flue Gas Exhaust System And Air Supply System

    The boiler can be fitted with a parallel connected flue gas outlet and air supply system or a concentric flue gas outlet and air supply system. The appliance connection diameter is 80/125 mm, to which the flue gas outlet and air supply system can be fitted, with or without elbow pieces.
  • Page 19 Boiler conversion from concentric to parallel It is also possible to use a parallel pipe connection of 2x 80mm. In this case a conversion kit 'concentric to parallel' should be ordered. Art.nr. S4440520. 1. Push the 2 clips slightly outwards. 2.
  • Page 20 Duopass Flue system literature. The ATAG flue gas system is meant, and designed, solely for the use on ATAG central heating boilers adjusted to Nat gas or LPG. The maximum flue gas temperatures are below 70°C (full load 80/60°C)
  • Page 21 In certain weather conditions condensation may also accumulate on the outside of the air inlet pipe. Such conditions must be considered and where necessary insulation of the inlet pipe may be required. In cold and/or humid weather water vapour may condense on leaving the flue terminal. The effect of such ‘plumeing’...

  • Page 22: Dimensions Of The Flue Gas And Air Intake Duct

    6.8.1 Dimensioning of the flue gas and air intake duct The flue diameter is determined by the total length of the run, including for the connection pipe, elbows fittings and terminal covers etc and the type and number of boilers installed into the system.

  • Page 23: External Hot Water Cylinders

    External hot water cylinders Depending of the comfort preferences different external hot water cylinders can be connected to the boiler. The choice of the cylinder depends on the coil output. The coil output must comply with the boiler output. A cylinder which is used in combination with a Q 51S or Q 60S, should have a minimal capacity of 40 kW resp.

  • Page 24: Electrical Connection

    Should it be necessary to change it, the mains power supply cable may only be replaced with an ATAG mains power supply cable (item No. S4396700). The ATAG room thermostat and controls must be connected to their allocated connections. All other types or makes of room thermostats or controls which are used must have a Volt free contact.

  • Page 26: Boiler Controls

    Boiler controls The boiler is provided with a fully automatic microprocessor control, called CMS Control Management System. This control simplifies operation by undertaking all major control functions. Initially when power to the unit is switched on it will remain on standby. There is no indication Led on, untill one of the programme keys is pressed.

  • Page 27: Explanation Of The Function Keys

    9.1 Explanation of the function keys Central Heating programme key. Switching the Central Heating on or off (Led on/off); Hot Water programme key. Switching the Domestig Hot Water (DHW) facility on or off (Led on/off); Pump programme key. adjusts the pump to continuous water circulation in the central heating system (Led on), or according to the pump overrun times on the relevant programs (Led off);...

  • Page 28: Filling And Venting The Boiler And Installation

    Filling and venting the boiler and installation The central heating installation needs to be filled with potable water. For filling or topping up the installation you use the filling loop according to the following procedure: Switch on the power supply; 2 The diplay will show FILL;...

  • Page 29: Commissioning The Boiler

    Commissioning the boiler Before the boiler is fired, ensure that the boiler and the system are well vented and free of air. Purge the gas line between the gas meter and the boiler and carry out a gas soundness test as specified in the current Gas Safety Regulations. The boiler does not require adjustment of the burner pressure and air quantity because it is self adjusting and is factory set at the correct value.

  • Page 30: Adjustments

    In certain cases adjustment have to be altered in case of : Lower flow temperature More boilers in Cascade, i.e.. Read through the Parameter chapter to adjust the boiler to its installation. Contact ATAG Heating in case of doubt. Please follow next procudere to alter adjustments: Altering adjustments STEP 1 Press the Mode-key for 5 secondss.
  • Page 31 40-100 % Q25S, Q38S, Q51S, Q60S: 100%, Q25C: 50%, Q38C, Q51C: 70% Type of communication bus: Automatic recognition of ATAG Bus or ATAG Z-Bus (30 Seconds waiting time after connecting BrainQ RSC thermostat) ATAG Z-Bus ATAG Bus (BrainQ and MadQ)

  • Page 32: Activating Factory Settings (Green Key Function)

    * Most of the data in this table can be requested by the BrainQ. Most of the adjustments which are stated in this table are unnecessary when in combination with the ATAG BrainQ thermostat and will be taken care of by the BrainQ itself and do not have to be adjusted.

  • Page 33: Isolating The Boiler

    Isolating the boiler In some situations it may be that the entire boiler must be switched off. By switching off the three keys with the lamps for central heating, hot water and pump programme ), the boiler is switched off. Leave the plug in the wall socket, which means the circulation pump and the three-way valve are activated once every 24 hours in order to prevent jamming.

  • Page 34: Checking For Contamination

    13.1 Checking for contamination In order to be able to check the boiler for contamination in the following years it is advisable to measure the maximum air displacement in the boiler when putting the boiler into operation. This value can be different with each type of boiler. In order to be able to measure this value follow the next procedure: Press the MODE-key for 5 seconds.

  • Page 35: Checking The O

    5,0% and 7,0% 5,1% and 7,0% CO/CO ratio less than 0.004% Contact ATAG Heating when the measured values is outside this range. Ending the O measuring procedure: Press the - key until OFF is shown (keep key pressed). With this the procedure has ended.

  • Page 36: Maintenance Activities

    Required tools: Cross head screwdriver ATAG T-handle key set with 3 bits (hex key 4mm, hex key 5mm and cross head PZ2) Open end wrench 8mm To carry out the maintenance activities please follow the next procedure: Switch off the power supply;...
  • Page 37 Remove the burner cassette (18) from the ventilator unit; Check the burner cassette for wear and tear, pollution and any breakages. Clean the burner cassette with a soft brush and vacuum cleaner. In the case of breakages, always replace the complete burner cassette (18); Replace the gasket (17) between the burner (18) and upper casing (15), if required;...

  • Page 38: Draining The Installation

    In the event that parts require replacement, use only genuine parts supplied by ATAG Heating UK Ltd. Please contact your installer or ATAG Heating UK Ltd. for further details. Contact details can be found on the back page of this manual.

  • Page 39: User's Instructions

    Please contact ATAG Heating UK Ltd. for further details. Contact details can be found on the back page of this manual. 13.6 Maintenance frequency ATAG Heating UK Ltd advises an annual inspection, with a full strip down service as required, depending on the CO, CO and ratio figures.

  • Page 40: Error Indication

    Error indication A detected error is indicated on the display by means of blocking or error messages. A distinction should be made between these two messages due to the fact that blocking can be of a temporary nature, however, error messages are fixed lockings. The control will try its utmost to prevent locking and will temporarily switch off the unit by blocking it.

  • Page 41: Annex A Technical Specifications

    Annex A Technical specifications Technical specifications Natural Gas ATAG Q-Series Combi Solo Boiler type Q25C Q38C Q51C Q25S Q38S Q51S Q60S Type of heat exchanger OSS2 OSS2 OSS3 OSS1 OSS2 OSS3 OSS4 Input CH Net Input CH Gross 22,5 34,2...

  • Page 42: Annex B Additives

    ATAG support the use of inhibitors suitable for mixed metal applications that keep the pH level between 6 and 8. Dosage levels as per manufacturers instructions. Preferred inhibitor suppliers are Fernox and Sentinel.

  • Page 43: Annex C Dimensions

    Annex C Dimensions ceiling ATAG Q-Serie Boiler type Q25C Q38C Q51C Q25S Q38S Q51S Q60S Height Width 1000 Depth Left side / flue gas connexion Centre to centre flue gas and air supply Back / flue gas connexion Left side / gas pipe...
  • Page 44 ATAG Q-Serie Boiler type Q25C Q38C Q51C Q25S Q38S Q51S Q60S Concentric flue system 80/125 80/125 80/125 80/125 80/125 optional optional Parallel flue system optional optional optional optional optional 2x 80 2x 80 Gas pipe 1/2"Rp 1/2"Rp 3/4"Rp...

  • Page 45: Annex D Installation Examples

    Annex D Installation examples D.1 Radiator installation without thermostatic radiator valves A Boiler: Connection terminal ATAG Q ATAG BrainQ thermostat Outside sensor ARV12 Thermostatic radiator valve Automatic by-pass Use alway a by pass in combination with thermostatic radiator valves. Low loss header required for Q51 and Q60.

  • Page 46: Radiator Installation With Underfloor Heating Zone

    Connection terminal MadQ built in B Cylinder: Cylinder sensor C Direct zone: Pump direct zone D Mixing zone: Flow sensor mixing zone Three way valve mixing zone 230V~ Pump mixing zone See also the installation manual ATAG MadQ Zone controller.

  • Page 47: Annex E Resistance Table Sensors

    Annex E Resistance table sensors Temp NTC 12K °C (12k/25°C) flow sensor T1(a) return sensor T2 DHW sensor T3 outside sensor T4 98.000 90.000 82.000 74.000 66.000 58.000 53.500 49.000 45.000 40.500 36.000 33.500 30.900 28.200 25.600 23.000 21.400 19.900 18.100 16.600 15.000...

  • Page 48: Annex F Declaration Of Conformity

    Annex F Declaration of conformity CE DECLARATION OF CONFORMITY Hereby declares ATAG Verwarming Nederland BV that, the condensing boiler types: ATAG Q25S Q25C Q38S Q38C Q51S Q51C Q60S are in conformity with the provisions of the following EC Directives, including all amendments,...

  • Page 49: Annex G Kiwa Certificate

    Annex G Kiwa certificate...

  • Page 50: Benchmark 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. Failuretoinstallandcommissionaccordingtothemanufacturer’sinstructionsandcompletethisBenchmarkCommissioningChecklistwillinvalidatethe warranty.Thisdoesnotaffectthecustomer’sstatutoryrights.

  • Page 51: Service Record

    SERVICE RECORD It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider BeforecompletingtheappropriateServiceRecordbelow,pleaseensureyouhavecarriedouttheserviceasdescribedinthemanufacturer’sinstructions. Alwaysusethemanufacturer’sspecifiedsparepartwhenreplacingcontrols. SERVICE 01 SERVICE 02 Date: Date: Engineername: Engineername: Companyname: Companyname: TelephoneNo: TelephoneNo: GassaferegisterNo: GassaferegisterNo: Atmax.rate: COppm AND CO ²...
  • Page 52 ATA G H e a t i n g U K L t d . • U n i t 3 • B e a v e r Tr a d e P a r k • Q u a r r y L a n e C h i c h e s t e r W e s t S u s s e x P O 1 9 8 N Y Phone: 01243 815 770 •...

This manual is also suitable for:

Q 25cQ 38cQ 38sQ 51cQ 51sQ 60s

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