A.O. Smith Epsilon EB-40 Installation And Service Manual
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A.O. Smith Epsilon EB-40 Installation And Service Manual

A.O. Smith Epsilon EB-40 Installation And Service Manual

Light commercial high efficiency condensing boiler
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These instructions should be retained by user.
Epsilon
Light Commercial High Efficiency

Condensing Boiler

EB - 40/50
0310 349
Installation and Service
Manual
Innovation has a name.

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Summary of Contents for A.O. Smith Epsilon EB-40

  • Page 1: Condensing Boiler

    Epsilon Light Commercial High Efficiency Condensing Boiler EB - 40/50 0310 349 Installation and Service Manual Innovation has a name. These instructions should be retained by user.

  • 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) Last postion shows the actual flow temperature 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...

  • Page 3: Table Of Contents

    14.5 Scope of the warranty .......................40 14.6 Claims ..........................40 14.7 Obligations of A.O. Smith Water Heaters ................40 Annex A Technical specifications ....................41 Annex B System water additives ....................42 Annex C Dimensions ........................43 Annex D Installation examples .....................45 Annex E Declaration of conformity ....................47 Work on the installation should only be carried out by qualified personnel with calibrated equipment.

  • Page 4: Introduction

    Bord Gais installers in connection with the installation and putting into operation of A.O. Smith 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 A.O.
  • Page 5 15 6 Epsilon EB 40 figure 1.a 1 heat exchanger 8 ceramic burner cassette 15 air box 2 ignition unit 9 operating panel 16 identification plate 3 fan unit 10 Control Tower (CMS) 4 air inlet damper 11 water filter return CH 5 gas valve 12 circulation pump 6 safety valve 13 flue gas discharge...

  • Page 6: Rules

    British Standards. The A.O. Smith Epsilon 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 7 Take note of the following when maintenance or adjustments are needed: The unit must be able to function during these activities; for this reason, the unit’s supply voltage, gas pressure and water pressure must be maintained. Ensure that these is not a source of potential danger during these activities. Following maintenance or other activities;...

  • Page 8: Scope Of The Supply

    Scope of the supply The boiler is supplied ready for use. The supply kit is composed as follows: • Boiler with casing; • Gas isolation valve; • Automatic vent (inside the boiler); • Template on the package wrapper; • Safety valve (inside the boiler); •...

  • Page 9: Mounting The Boiler

    Mounting the boiler Install the boiler in a well-ventilated boiler room in accordance to the actual regulations. 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 10: Connecting The Boiler

    A low velocity header must be connected to the EB 50 to prevent flow problems over the boiler. A.O. Smith supplies the low velocity header for 1 boiler with art.nr. 0310372. This can be connected directly under the boiler on the flow and return pipe.
  • Page 11 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.

  • Page 12: Expansion Vessel

    The warranty becomes invalid, if the installation is not being flushed and/or the quality of the filling water does not meet the specifications recommended by A.O. Smith. Always contact A.O. Smith in advance, if things are not clear or you wish to discuss any deviations. Without approval, the warranty becomes invalid.
  • Page 13 Should you wish to achieve the required water quality by using chemical addi- tives, then this is your own responsibility. The warranty on the product delivered by A.O. Smith expires, if the water quality does not meet A.O. Smith's specifications or the chemical additives have not been approved by A.O. Smith.

  • Page 14: Underfloor Heating System (Plastic Pipes)

    The Epsilon boilers can be converted from natural-gas to propane/lpg and from propane/ lpg to natural-gas. When the boiler has to be converted, A.O. Smith provides special kits for this purpose. Special instructions are supplied with the kit.

  • Page 15: Condensation Drain Pipe

    6.6 Condensation drain pipe All A.O. Smith wall hung gas fired condensing boilers contain a syphonic condensate trap to collect and release 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 figures 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 600 ml of water.

  • Page 17: Flue Gas Exhaust System And Air Supply System

    6.7 Flue gas exhaust system and air supply system The flue gas exhaust system and air supply system consists of: Flue gas pipe; Air supply pipe; Roof or wall terminal. The flue gas exhaust system and air supply system must comply with: United Kingdom: The flue gas outlet and air supply installation must comply with the current regulation requirements.
  • Page 18 Locally applicable rules. The supplier’s installation instructions When in doubt or if you have any questions, always contact A.O. Smith. 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. The maximum permissible pipe length is set out in Table 6.7.1.a.
  • Page 19 A.O. Smith. The A.O. Smith flue gas system is meant and designed solely the use on A.O. Smith central heating boilers adjusted for Nat gas or LPG. The maximum flue gas temperatures are below 70°C (full load 80/60°C) The proper operation can be influenced harmfully by changes of or adjustments to the correct set up.
  • Page 20 2m (6.6ft) above a pavement or platform to which people have access (including) any balcony or flat roof the terminal must be protected by a guard of durable material. Contact A.O. Smith for a suitable guard. Where a terminal is fitted below a window which is hinged at the top, and where the hinge axis is horizontal, and the window opens outwards, the terminal shall be 1m below the bottom of the window opening.

  • Page 21: Dimensioning Of The Flue Gas And Air Intake Duct

    6.7.1 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 22: Electrical Connection

    All connections should be designed in accordance with the enclosed regulations.; Should it be necessary to change it, the mains power supply cable may only be re- placed with an A.O. Smith mains power supply cable (Art.nr. 0310374(S)). The bus room thermostat and controls must be connected to their allocated connections.

  • Page 24: 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 program keys is pressed.

  • Page 25: Explanation Of The Function Keys

    8.1 Explanation of the function keys Central Heating program key. Switching the Central Heating on or off (Led on/off); Hot Water program key. (when applicable) Switching the Domestig Hot Water (DHW) facility on or off (Led on/off); PC program 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 26: 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 27: 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 28: Adjustments

    In certain cases adjustment have to be altered in case of : Lower flow temperature Read through the Parameter chapter to adjust the boiler to its installation. Contact A.O. Smith in case of doubt. Please follow next procudere to alter adjustments: Altering adjustments STEP 1 Press the Mode-key for 5 secondss.
  • Page 29 Parameter-Mode PARA Factory Description Range 70°C maximum flow temperature CH 20 - 85°C type of CH installation: radiators; air heating; convectors: T max. flow 85°C; K factor heating line 2.3; gradient 5°C/min; gear radiators with large surface areas or underfloor heating as additional heating: under floor heating with radiators as additional heating: T max. flow 60°C; K factor heating line 1.5; gradient 4°C/min; gear full under floor heating: T max. flow 50°C; K factor heating line 1.0; gradient 3°C/min; gear max. maximum power CH in kW min-max control principal with on / off thermostat: 100 % on / off thermostat 100 % on / off weather dependant heating line K-factor (see also heating line graph) 0.2 - 3.5...

  • Page 30: Activating Factory Settings (Green Key Function)

    Service-Mode SERV Value Description Range boiler in operation with burner function on OFF - max. fan adjustable and burner off OFF - max. pump adjustable with burner on OFF - max. showroom position ON = active and OFF = non active ON - OFF Error-Mode ERRO...

  • Page 31: 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 program ( ), 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 32 12.1 Emission checking In order to be able to check on the boiler’s emission during its years of operation, it is recommended to measure the maximum air displacement of the boiler on commissioning. This value may be different for each boiler type. This measuring is only worthwhile if the value is known on commissioning.
  • Page 33 5,1% and 7,0% percentage at low load between 7,7% and 8,8% 9,1% and 10,3% Contact A.O. Smith when the measured values is outside this range. Ending the O measuring procedure: Press the - key until OFF is shown (keep key pressed).

  • Page 34: Maintenance Activities

    12.3 Maintenance activities Required tools: Cross head screwdriver 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; Remove the screw behind the door on the front of the casing (see fig.
  • Page 35 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 36 (see page 33). figure 13.3.l In the event that parts require replacement, use only genuine parts supplied by A.O. Smith. Please contact your installer or A.O. Smith for further details. Contact details can be found on the back page of this manual.

  • Page 37: Draining The Installation

    Please contact A.O. Smith for further details. Contact details can be found on the back page of this manual.

  • Page 38: 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 39: Warranty Conditions

    Product Registration Form. Registering the boiler gives the owner of the boiler supplied by A.O. Smith Water Heaters the right to the warranty set out below, which defines the commitments of A.O. Smith Water Heaters to the owner.

  • Page 40: Exclusions

    A.O. Smith Water Heaters parts for spare parts or as a repair part. 14.5 Scope of the warranty The obligations of A.O.

  • Page 41: Annex A Technical Specifications

    Annex A Technical specifications Technical specifications Natural Gas Epsilon Boiler type EB 40 EB 50 Type heat exchanger HEX2 HEX3 Input Hs CH Input Hi CH 34,2 45,9 Efficiency class according BED   Efficiency according EN677 (36/30°C part load, Hi) 109,1 109,3 Efficiency according EN677 (80/60°C full load, Hi)

  • Page 42: Annex B System Water Additives

    Annex B System water additives When the filling water requirements as referred to in chapter Water Quality have been met, certain additives are allo- wed for the below mentioned applications and related dosage. Warranty on A.O.Smith delivered installation products expires, if these additives and concentrations are not used in accordance with this annex. Additive type Supplier and specifications Max.

  • Page 43: Annex C Dimensions

    Annex C Dimensions ceiling dimensions (in mm) figure C.a Epsilon Boiler type EB 40 EB 50 Height Width Depth Left side / flue gas connexion Centre to centre flue gas and air supply Back / flue gas connexion Left side / gas pipe Left side / flow pipe Left side / return pipe Left side / condensate pipe...
  • Page 44 EB 40 EB 50 boiler connections figure C.b Epsilon Boiler type EB 40 EB 50 Concentric flue system 80/125 80/125 Parallel flue system 2x 80 2x 80 Gas pipe 1/2"Rp 3/4"Rp Flow pipe Return pipe Condensate pipe connection diameters table C.b...

  • Page 45: Annex D Installation Examples

    Annex D Installation examples D.1 Radiator installation without thermostatic radiator valves installation example figure D.1.a A Boiler: Connection terminal Epsilon boiler Room thermostat Outside sensor Thermostatic radiator valve Automatic by-pass Use alway a by pass in combination with thermostatic radiator valves.
  • Page 46 D.2 Radiator installation with underfloor heating zone installation example figure D.2.a A Boiler: Connection terminal Epsilon boiler Outside sensor Zone controller Connection terminal zone controller built in C Direct zone: Pump direct zone D Mixing zone: Flow sensor mixing zone Three way valve mixing zone 230V~ Pump mixing zone...
  • Page 47 Annex E CE Declaration of conformity CE DECLARATION OF CONFORMITY Hereby declares A.O. Smith Water Products Company B.V. that, the condensing boiler types: Epsilon EB 40 EB 50 are in conformity with the provisions of the following EC Directives, including all amendments,...
  • Page 48 A.O. Smith UK, Unit B8 Amstrong Mall, Southwood Business Park, Farnborough, Hampshire GU14 0NR www.aosmith.co.uk “A.O. Smith Water Heaters” is a trading name of Advance Services (Sales) Ltd. Reg.

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