Page 2 - Code of Practice; Standards of Work; BENCHMARK SCHEME; Benchmark Commissioning and Servicing Section; Useful contact details:; Alpha Heating Innovation:
Alpha E-Tec 28 and 33 - Benchmark Scheme To comply with Building Regulations Part L1 (Part 6 in Scotland) the boiler should be installed in accordance with the manufacturer’s instructions. Self-certification that the boiler has been installed to comply with Building Regulations can be demonstrated b...
Page 3 - CONTENTS; NOT be taken in anyway as over-riding statutory obligations.; INTRODUCTION
CONTENTS 1 Introduction ........................................ 32 Safety symbols .................................. 43 Technical data ................................... 54 General boiler information ................. 105 Installation ......................................... 176 Commissioning ......
Page 4 - RECOVERABLE OR RECYCLABLE MATERIAL; SAFETY GLOVES; SAFETY SYMBOLS; PERSONAL PROTECTIVE EQUIPMENT
ELECTRICAL HAZARDStrictly follow all of the indications next to the symbol. The symbol indicates the appliance’s electrical components or, in this manual, identifies actions that can cause an electrical hazard. MOVING PARTSThe symbol indicates the appliance’s moving components that can cause hazards...
Page 5 - TECHNICAL DATA; Note: OtherTechnical data is the same as NG data.
3 TECHNICAL DATA Alpha E-Tec 28 and 33 - Technical Data 3.2 TECHNICAL PERFORMANCE DATA - LPG - PROPANE GAS (Cat I3P 3P - G31 37 mbar) Note: OtherTechnical data is the same as NG data. Heat input gross - DHW kW Heat input gross - CH kW Gas supply pressure mbar Gas burner injector mm CO 2 at maximum C...
Page 6 - Side Flue; Constant - The pump speed is controlled to give a set; The boiler is factory set to Constant - to achieve a
Alpha E-Tec 28 and 33 - Technical Data 3.4 FLUE LENGTHS A 500 mm or 1000 mm Easy-Flue terminal kit with 90° bend or horizontal terminal is available.CD 750 mm and 1000 mm flue extensions are available.Length of Flue Required:- Rear Flue = wall thickness + 180 mm (includes terminal). Side Flue = wall...
Page 8 - Class; PMW; J2 on PCB; Remove link to
Alpha E-Tec 28 and 33 - Technical Data Note: This Appliance Must Be EarthedOptional integral single channel controls are available if required.Note: Only use the Alpha single channel controls. Do not fit any two channel controls. 3.6 ELECTRICAL CONNECTIONS Fig. 3.3 3.7 DATA BADGE ANNOTATION MdSr N o...
Page 9 - BOILER SCHEMATIC
3.8 BOILER SCHEMATIC Fig. 3.4 Alpha E-Tec 28 and 33 - Technical Data 1 Gas isolation valve 2 Cold mains isolation valve 3 Gas valve 4 DHW flow switch 5 Gas injector 6 Flow regulator 7 DHW temperature sensor 8 Condensate trap 9 3 bar safety valve 10 Expansion vessel11 Venturi positive pressure point ...
Page 10 - ELECTRICAL SUPPLY; The flue system must be installed in accordance with BS 5440:1.; GENERAL BOILER INFORMATION; Alpha E-Tec 28 and 33 - General Boiler Information
4.1 GAS SUPPLY The meter and supply pipes must be capable of delivering the required quantity of gas in addition to the demand from any other appliances connected to the same gas supply.Refer to Technical performance data in Section 3.1 and 3.2.The complete installation, including the meter, must be...
Page 12 - window surround or door surround.; Terminal position
4.5 FLUE TERMINAL LOCATION - Figs. 4.3 and 4.4 Notes:1. In addition, the terminal should not be nearer than 150 mm to the framework of an opening into the building, i.e. a window surround or door surround. 2. This clearance may be reduced to 25 mm without effecting the performance of the boiler. How...
Page 16 - DOMESTIC HOT WATER SYSTEM
Fig. 4.8 - External soakaway Alpha E-Tec 28 and 33 - General Boiler Information Ground level (either/or) 22mm termination from boiler, increase to 32 mm if external 2½ fall O 25mm 300mm Two rows of 3 x 12mm holes at 25mm centres, 50mm from the bottom of the tube. Holes to face away from house. Cemen...
Page 17 - For internal fitting of the flue, using the flue sealing; INSTALLATION; Damaged products must not be used.
5.3 PREPARE THE WALL - Fig. 5.2 1. Decide upon the position of the boiler taking into account the clearances required for servicing and the flue terminal position. 2. Tape the template to the wall (ensure it is level and the right way up) and mark the position of the holes for the boiler mounting br...
Page 22 - marked on the outer duct is positioned at the top.
Alpha E-Tec 28 and 33 - Installation Fig. 5.12 1 1 2 10. Secure the flue assembly to the bend with the clamp ensuring it is positioned centrally over the joint, ensuring the ‘TOP’ marked on the outer duct is positioned at the top. Note: Check the flue terminal protrudes 120 mm out of the wall and th...
Page 23 - Ensure there is always
Alpha E-Tec 28 and 33 - Installation PM length = C + (1 x 93° bend = 1.3 m) + (2 x 45° bends = 1.8 m) C Min. 400 mm CD Easy-Flue Flue sealing collar Terminal end section from CD Easy-Flue PM length = C + (2 x 93° bend = 2.6 m) + (2 x 45° bends = 1.8 m) C Terminal end section from CD Easy-Flue PM len...
Page 24 - FITTING BOILER CONTROLS; Route the wire along the groove in the control panel to
Alpha E-Tec 28 and 33 - Installation 5.10 CONNECT THE MAINS SUPPLY - Figs. 5.14 and 5.15 Gain access to the boiler terminal block 'D' as follows:- Remove the case front panel, refer to Sections 7.1 and 7.2.Remove the control panel cover 'B'.1. Remove the one screw 'A' in Fig. 5.14.2. Depress the two...
Page 25 - External Sensor – Weather compensation feature
Alpha E-Tec 28 and 33 - Installation Easy-Stat RF receiver and Digital or Mechanical Clock installation1. Remove the link between the red wires 3 and 4 and plug all wires on to their corresponding numbers on the receiver or clock. 2. Locate the receiver or clock onto the two pins and using the two s...
Page 26 - FILL THE SYSTEM; Ensure that the condensate trap has been filled with water.; COMMISSIONING; TEST FOR GAS TIGHTNESS AND PURGE THE SUPPLY; connected to the boiler for tightness in accordance with BS 6891.
When commissioning the boiler, ensure the Benchmark Checklist at the back of these instructions is completed. 6.1 FILL THE SYSTEM 1. The boiler is fitted with an automatic air vent positioned on the pump (see Fig. 7.6), ensure that the vent is always open.2. Open the central heating flow and return ...
Page 28 - BOILER OPERATION
6.5 BOILER OPERATION Domestic hot water supply always takes priority over central heating. If a demand for hot water is required during a central heating period, the boiler will automatically switch to the hot water mode until the demand is satisfied. This interruption in the central heating is only...
Page 29 - CHECKING THE COMBUSTION - CHIMNEY SWEEP MODE; reading, wait for the boiler stabilise,; FINAL COMMISSIONING; pump will automatically operate for 30 seconds.
6.6 CHECKING THE COMBUSTION - CHIMNEY SWEEP MODE As part of the Benchmark Checklist procedure the combustion levels of the boiler when the installation is completed must be measured and recorded.The air gas ratio of the boiler has been factory-set and should not require adjusting during commissionin...
Page 30 - been installed and commissioned.; INFORMATION MENU; By pressing the; Info Menu; CONVERTING THE BOILER TO OPERATE ON LPG
Alpha E-Tec 28 and 33 - Commissioning 7. Explain to the User that an internal frost thermostat is fitted in the boiler, and that the electrical supply to the boiler must be left on for the thermostat to operate, i.e. the boiler must be set to standby. 8. Explain to the User that in certain weather c...
Page 31 - SET UP PROCEDURE; value is as specified
6.12 CO 2 SET UP PROCEDURE The air gas ratio of the boiler has been factory set and should not require adjusting during first commission. If adjustment is recommended or required the engineer must be competent to carry out this work. Before starting this procedure please check the following:The fron...
Page 32 - PROGRAMMING THE PCB; Programming sequence; Pressing the mode button (; RESET) button to exit the
Alpha E-Tec 28 and 33 - Commissioning 6.13 PROGRAMMING THE PCB The boiler has the ability to programme several operational parameters. By modifying these parameters as described below, the boiler can be adapted according to specific needs. Programming sequence RESET + INFO > 5 secs Menu 'P' 't' '...
Page 35 - ROUTINE SERVICING; Alpha E-Tec 28 and 33 - Routine Servicing
7 ROUTINE SERVICING Alpha E-Tec 28 and 33 - Routine Servicing To ensure efficient operation of the boiler it is recommended that it is checked and serviced as necessary at regular intervals. The frequency of servicing will depend upon the particular installation conditions and usage, but in general ...
Page 36 - IMPORTANT NOTES PRIOR TO SERVICING; installed correctly and there are no blockages.
Alpha E-Tec 28 and 33 - Routine Servicing 7.1 IMPORTANT NOTES PRIOR TO SERVICING 1. Check the entire flue length and joints including the flue terminal outside. Ensure that all of the flue assembly has been installed correctly and there are no blockages. 2. Run the boiler and check the operation of ...
Page 38 - CLEANING THE ELECTRODES, BURNER AND FAN
Alpha E-Tec 28 and 33 - Routine Servicing 7.3 PREPARE FOR SERVICING - Fig. 7.5 1. Ensure the electrical supply is isolated and the gas supply is off.2. Gain access by removing the control panel cover, case front panel and lowering the control panel as described in Section 7.2. 3. Remove the condensa...
Page 40 - RE-ASSEMBLE THE BOILER; previously removed. Replace seals if necessary.
7.6 RE-ASSEMBLE THE BOILER 1. Important: Before replacing the combustion chamber front assembly, pour at least 200 cc of water into the coils of the heat exchanger. This is to ensure the condensate trap is full of water before operating the boiler. 2. Replace the combustion chamber front assembly, e...
Page 41 - COMPONENT REPLACEMENT; carefully withdraw the electrode.; Alpha E-Tec 28 and 33 - Component Replacement
8 COMPONENT REPLACEMENT It is the law that any service work must be carried out by a competent person, i.e. Gas Safe registered boiler engineer.Warning: Before replacing any boiler components, isolate the electrical supply and close the boiler gas service cock. Allow the boiler to cool.Always test f...
Page 42 - Remove the three screws securing the PCB cover and remove; GAS VALVE
Alpha E-Tec 28 and 33 - Component Replacement 8.6 FLUE TEMPERATURE SENSOR - Fig. 7.6 Gain access as described in Section 8.1.1. Unplug the wire from the flue sensor.2. Using a 13 mm spanner, turn the sensor 90° anti-clockwise and withdraw it from the heat exchanger.3. Fit the new sensor and re-assem...
Page 43 - expansion valve outlet pipe.
Fig. 8.2 Alpha E-Tec 28 and 33 - Component Replacement 8.11 CONDENSATE TRAP - Figs. 7.7 and 8.2 Gain access as described in Section 8.1.Note: Before removing the trap, ensure that the water from the trap can be contained to avoid spillage.1. Pull the flue drain hose off the top of the condensate tra...
Page 45 - centre of the boiler to remove.; COMBUSTION CHAMBER INSULATION; electrode assembly first as described in Section 8.3.
8.20 DHW HEAT EXCHANGER - Fig. 7.6 Gain access and drain the boiler heating and hot water circuits as described in Sections 8.1 and 8.2.1. Remove condensate trap as in Section 8.11.2. Using a 4 mm Allen key remove the two bolts securing the Plate heat exchanger to the hydro block assembly.3. Slide t...
Page 46 - ILLUSTRATED WIRING DIAGRAM; WIRING DIAGRAM
9.1 ILLUSTRATED WIRING DIAGRAM 9 WIRING DIAGRAM Alpha E-Tec 28 and 33 - Wiring Diagram Colour CodeBk ...... BlackBl ....... BlueBr ....... BrownG ........ GreenGy ...... GreyG/Y .... Green/YellowOr....... OrangeP ........ PurpleR ........ RedV ........ VioletW ....... WhiteY ........ Yellow Componen...
Page 47 - 0 ERROR CODES AND FAULT FINDING; CARRY OUT INITIAL FAULT FINDING CHECKS; Alpha E-Tec 28 and 33 - Error Codes and Fault Finding; Error
10 ERROR CODES AND FAULT FINDING 10.1 CARRY OUT INITIAL FAULT FINDING CHECKS In the event of a suspected functional fault with the boiler, carry out initial fault finding checks to establish the cause.1. Check the correct gas, electrical and water supplies are available at the boiler.2. Check the bo...
Page 50 - 1 SHORT PARTS LIST; Description
Alpha E-Tec 28 and 33 - Short Parts List 11 SHORT PARTS LIST Description Alpha Pt. No. Diverter cartridgePressure gaugeCondensate trapBottom condensate trap connectionFlow/Return sensorDHW temperature sensorElectrodeElectrode gasketFlue turret with sealsDHW flow switchPump head motorPrimary heat exc...
Page 51 - Alpha E-Tec 28 and 33 - Energy Classification; 2 ENERGY CLASSIFICATION
Alpha E-Tec 28 and 33 - Energy Classification 12 ENERGY CLASSIFICATION The values in the following tables refer to the maximum heating output. Model(s): E-Tec 28 Condensing boiler: YES Low-temperature boiler: NO B1 boiler: NO Cogeneration space heater: NO Equipped with a supplementary heater: NO Com...
Page 52 - XL; dB; kW
E-Tec 28 Parameter value Yearly energy consumption for the hea-ting function (QHE) 1.5 GJ Yearly electricity consumption for the domestic hot water function (AEC) 27 kWh Yearly fuel consumption for the domestic hot water function (AFC) 17 GJ Seasonal room heating yield ( η s) 93 % Domestic hot water...
Page 53 - FACSIMILE FOR FILLING IN ROOM HEATING SYSTEM ASSEMBLY CHART
Seasonal space heating energy efficiency of boiler 1 % Temperature control From fiche of temperature control Supplementary boilerFrom fiche of boiler Supplementary heat pump From fiche of heat pump Solar contribution AND Supplementary heat pump Select smaller value Boiler and supplementary heat pump...
Page 55 - PARAMETERS FOR FILLING IN ASSEMBLY CHART; ROOM HEATING SYSTEM ASSEMBLY CHART
Parameter E-Tec 28 E-Tec 33 ‘I’ 93 93 ‘II’ * * ‘III’ 1.11 95 ‘IV’ 0.44 0.37 12.6 PARAMETERS FOR FILLING IN ASSEMBLY CHART * To be established by means of table 5 of Regulation 811/2013 in case of “assembly” including a heat pump to integrate the boiler. In this case the boiler must be considered as ...
Page 56 - PARAMETERS FOR FILLING IN DHW PACKAGE ASSEMBLY CHART
Alpha E-Tec 28 and 33 - Energy Classification Water heating energy efficiency of combination heater Water heating energy efficiency of package under average climate Water heating energy efficiency class of package under average climate Water heating energy efficiency under colder and warmer climate ...
Page 57 - Alpha E-Tec 28 and 33 - Page intentionally Blank
Alpha E-Tec 28 and 33 - Page intentionally Blank 57
Page 58 - 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 demonstratingcompliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failure to install and commission according to the...
Page 59 - SERVICE RECORD
© Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk All installations in England and wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the c...
Page 60 - IMPORTANT NO
5 Alpha E-T ec 28 and 33 1. BOILER LOCA TION Always ensure the f ollowing clear ances are availab le around the casing of the boiler:- T op: (hor izontal flue) 235 mm, T op: (ver tical flue) 150 mm Bottom: 150 mm, Each side: 5 mm, Front: 450 mm Do not store an y other articles in a cupboard containi...
Page 62 - Note: This is the temper; HEA TING AND HO; Fig. 2 - External weather compensation pr; FILL AND PRESSURISE THE SYSTEM
Alpha InT ec² 25XE and 28XE 3 Alpha E-T ec 28 and 33 The temperature of the hot w ater to the taps can be adjusted by using the hot w ater temperature control b uttons (items 4 and 5 in Fig. 1) to the required v alue shown on the displa y in °C. When a tap is opened the display will indicate the tem...
Page 63 - OPERA TING THE; Off - In this mode there is electr
2 Alpha E-T ec 28 and 33 Please read these instructions carefully bef ore operating your boiler . The Alpha E-T ec r ange of high efficiency condensing boilers incorpor ate the latest technology in boiler design. With impro ved bur ner efficiency and reduced electrical consumption together with high...
Page 64 - Gas Fired, High Efficienc; Wrotham Heath, Sevenoaks; Set for use with Natural Gas; Leave these instructions with the User
User Instructions E-T ec 28 and 33 Wall Mounted, Fan Assisted, Room Sealed, Gas Fired, High Efficienc y Condensing Combination Boiler Nepicar House, London Road, Wrotham Heath, Sevenoaks , Kent TN15 7RS For T echnical help or f or Service call ... ALPHA HELPLINE Tel 0344 871 8764 website: www .alpha...
