Alpha E-Tec 15R Installation And Servicing Instruction

Wall mounted, fan assisted, room sealed, gas fired, high efficiency condensing regular boiler

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Installation and Servicing

E-Tec 15, 20, 25R

Wall Mounted, Fan Assisted, Room Sealed,

Gas Fired, High Efficiency Condensing Regular Boiler

These instructions have been carefully prepared but we reserve the right

to alter the specification at any time in the interest of product improvement.

Instructions

For Technical help or for Service call ...

ALPHA HELPLINE Tel: 0344 871 8764

website: www.alpha-innovation.co.uk

Nepicar House, London Road,

Wrotham Heath, Sevenoaks,

Kent TN15 7RS

Alpha E-Tec 15R

Alpha E-Tec 20R

Alpha E-Tec 25R

Set for use with Natural Gas

Leave these instructions with the User

G.C. No. 41 532 49

G.C. No. 41 532 50

G.C. No. 41 532 51

Part No. 1.043481 rev. ST.004219/001

0220/D410

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Summary of Contents for Alpha E-Tec 15R

Page 1 E-Tec 15, 20, 25R Wall Mounted, Fan Assisted, Room Sealed, Gas Fired, High Efficiency Condensing Regular Boiler For Technical help or for Service call ... ALPHA HELPLINE Tel: 0344 871 8764 website: www.alpha-innovation.co.uk Nepicar House, London Road, Wrotham Heath, Sevenoaks,...
Page 2 Service Interval Record and left with the householder. www.centralheating.co.uk Useful contact details: Gas Safe Register - 0800 408 5577 - www.gassaferegister.co.uk Alpha Heating Innovation: General Sales Enquiries - 0344 871 8760 Technical Helpline - 0344 871 8764 Alpha E-Tec 15, 20, 25R - Benchmark Scheme...
Page 3: Table Of Contents
2. It is the law that all domestic boiler installations are registered by the installer through the Gas Safe Notification Scheme. 3. The boiler must only be used with Alpha CD condensing flue components. Propane Gas (LPG) - In addition to the regulations and requirements stated, the boiler must be installed in accordance with BS 5482:1 - The Installation of Propane Burning Appliances in Permanent Dwellings.
Page 4: Safety Symbols
The user must not dispose of the appliance at the end of its service life as municipal waste, but send it to appropriate collection centres. PERSONAL PROTECTIVE EQUIPMENT SAFETY GLOVES SAFETY GOGGLES SAFETY FOOTWEAR Alpha E-Tec 15,20, 25R - Safety Symbols...
Page 5: Technical Data
Type of installation C13, C33, C43, C53, C63, C83, C93 * with Alpha Diverter Kit or DHW relay fitted ** Sealed system - Kit required TECHNICAL PERFORMANCE DATA - LPG - PROPANE GAS (Cat I3P 3P - G31 37 mbar)
Page 6 Each CD 45° Bend is equivalent to 0.9 m of flue length. The CD Vertical Flue terminal assembly is equivalent to 1 m of flue length. BOILER PRESSURE DROP FOR PUMP SELECTION 1000 1200 1400 1600 1800 2000 2200 Flow Rate (l/h water) Alpha E-Tec 15, 20, 25R - Technical Data...
Page 7 Optional integral controls are available if required. Note: Only use the Alpha two channel controls. Do not fit any single channel controls*. Fig. 3.1 shows the Internal two channel clock option for S or Y plan. Alternatively bring a Switched Live from external controls to terminal 1.
Page 8 Flue temperature sensor and thermal fuse Venturi positive pressure point (+) Flue test point (pressure point +) Drain valve Primary flow sensor Air test point (pressure point -) Drain valve Condensing heat exchanger Fig. 3.2 Alpha E-Tec 15, 20, 25R - Technical Data...
Page 9: General Boiler Information
The boiler is supplied with a 'Special X' type electrical connection with a PVC <HAR> H05VV-F 3 x 0.75 cable without a plug. If the power cable is damaged or replaced, it must be replaced with a cable supplied by Alpha or authorized After-Sale Technical Service.
Page 10 L = A + (2 x 45° bends = 1.8 metre) Fig. 4.1 VERTICAL FLUE OPTIONS Not less than 300 mm Not less than 300 mm Hmax = 14 m Hmax = 12.2 m (14 m - 1.8 m) Fig. 4.2 Alpha E-Tec 15, 20, 25R - General Boiler Information...
Page 11 Where a terminal is sited below 2 m from the ground or floor level, the terminal must be protected by a terminal guard. In these situations, consideration should also be given to prevent nuisance plume and fumes in areas such as access routes, passageways, patios, balconies etc. Alpha E-Tec 15, 20, 25R - General Boiler Information...
Page 12 The boiler may be installed in a cupboard or compartment, provided it is correctly designed for that purpose, i.e. complies with the Building Regulations and the requirements of BS 6798. Alpha E-Tec 15, 20, 25R - General Boiler Information...
Page 13 CENTRAL HEATING SYSTEM - Figs. 4.5 and 4.6 The boiler is designed for use in an open or (if the alpha sealed system kit is used) sealed central heating system in accordance with the requirements of BS 5449 and BS 6798. The external pump must be able to achieve a minimum flow rate of 900 l/h on open systems or 515 l/h on sealed systems.
Page 14 4.11 DISPOSAL OF CONDENSATE Provision must be made for the safe disposal of condensate produced by the flue gases of the Alpha boilers and reference should be made to BS 6798 for the requirements on the disposal of condensate.
Page 15 Two rows of 3 x 12mm holes at 25mm centres, 50mm from the bottom Soakaway depth 400mm of the tube. Holes to face filled with limestone chippings away from house. Fig. 4.10 - External soakaway Alpha E-Tec 15, 20, 25R - General Boiler Information...
Page 16: Installation
Condensate discharge pipe Literature pack and Wall template A suitable Alpha flue system must be selected to use with the boiler. Notes: a. All flues must be suitable for Alpha condensing boilers. b. CD 750 mm and 1000 mm flue extensions are available, if required.
Page 17 Bottom view Wall Condensate discharge pipe Heating ﬂow Gas service cock (22 mm) Heating return (22 mm) Electrical connection Use compression Gas inlet (22 mm) ﬁttings Top view Wall Fig. 5.4 Alpha E-Tec 15, 20, 25R - Installation...
Page 18 FIT THE FLUE - Figs. 5.5 and 5.6 The following procedure applies to fitting an Alpha CD Easy-Flue to both rear or side exit flue - horizontally only. The CD Easy-Flues are suitable for use in the flue length ranges shown in the tables below.
Page 19 Note: Ensure that all cuts are square and free from burrs. Once assembled with the components pushed home, the flue is fully sealed. Allow 20 mm 30 mm Do not cut past this point Fig. 5.10 Alpha E-Tec 15,20, 25R - Installation...
Page 20 Use the template (supplied with the boiler) to mark the required flue position, ensure the slope towards the boiler is correct. Determine the overall flue length as described in Section 5.6, paragraph 2 to determine the number of Alpha CD 750 or 1000 mm flue extensions required.
Page 21 Plume Management 1000 mm extension 60 mm dia. (equivalent to 1 m flue length) - Part No. 6.2001310. 60 mm dia. wall bracket - Part No. 6.2001260. Plume kit (2 x 93° bends 1 x 1000 mm extension and wall bracket) - Part No. 6.2001300. Fig. 5.12 Alpha E-Tec 15, 20, 25R - Installation...
Page 22 Note: The equivalent horizontal flue assembly length + the equivalent plume management length (PM length) must not exceed the maximum flue length stated for each boiler, i.e. E-Tec boilers - the maximum equivalent flue length must not exceed 12 metres. Alpha E-Tec 15, 20, 25R - Installation...
Page 23 5.11 FIT ALPHA CONTROLS (standard 240 V clock option) - Fig. 5.15 Ensure the electrical supply to the boiler is isolated. IMPORTANT - It is recommend to use an Alpha two channel clock. For advice on fitting a single channel (heating only applications) clock see page 7.
Page 24 External Sensor – Weather compensation feature The weather compensation sensor can only be used on an E-Tec R boiler when the Alpha Diverter Kit (part No. 6.5500048) or the DHW relay kit (part No. 3.029422) are used, otherwise the DHW temperature will be affected.
Page 25 5.13 OPTIONAL ALPHA SYSTEM DIVERTER KIT The Alpha Diverter Kit operates as a hot water priority valve. If the heating is on and there is a hot water demand the valve will divert the primary hot water to the cylinder until the cylinder sensor is satisfied. The heating will be held off during this period so it is recommended that a high recovery cylinder is used.
Page 26: Commissioning
17 Solar function (not used on this model) Domestic hot water temperature power scale 18 Functioning with external temperature probe control knob with Alpha diverter kit or 11 Operating in summer mode active (optional) DHW relay fitted 12 Operating in winter mode...
Page 27 Refer to Sections 5.13 and 5.14. Note: The Summer mode will only function if the Alpha Diverter kit has been fitted. When using a standard 'Y' or 'S' plan system the boiler MUST BE left in Winter mode.
Page 28 BOILER OPERATION With the optional Alpha Diverter Kit fitted, the E-Tec R operates with hot water priority. If the heating is on and there is a hot water demand the valve will divert the primary hot water to the cylinder until the cylinder sensor is satisfied.
Page 29 Fault history - by rotating the CH knob (item 6 in Fig. 6.1) in this menu the last five faults will be displayed Error code * With Alpha Diverter kit fitted it shows cylinder set temperature. With DHW relay fitted it shows the flow temperature to cylinder...
Page 30 Air test point F (+) A (-) Outlet pressure test point Gas outlet flow Inlet pressure adjustment screw test point (Max. CO ) Off/Set adjustment screw (Min. CO ) Wiring plug Fig. 6.2 Fig. 6.3 Alpha E-Tec 15, 20, 25R - Commissioning...
Page 31 'Winter' mode 0 - The display shows the set value of the CH selector 1 - The display shows the flow temperature during operation and the set value with no request Alpha E-Tec 15, 20, 25R - Commissioning...
Page 32 0 - 1 1 - On Cylinder 0 - with external 230V DHW request signal (optional relay board 0 - 1 management is necessary) 1 - with optional Alpha diverter valve kit (and cylinder sensor). Alpha E-Tec 15, 20, 25R - Commissioning...
Page 33: Routine Servicing
Section 7.1 and Section 7.3 paragraphs 1, 2 and 3 need to be carried out to allow a visual check of the components within the room sealed chamber. Alpha E-Tec 15, 20, 25R - Routine Servicing...
Page 34 11. Remove the condensate trap assembly and clean as described in Section 8.11. Case front panel ﬁxing screw Room sealed panel ﬁxing screws (7) Control panel ﬁxing screws Fig. 7.1 Fig. 7.2 Alpha E-Tec 15, 20, 25R - Routine Servicing...
Page 35 To ensure correct and safe operation of the appliance, it is essential that any worn or failed components are replaced with only genuine Alpha spare parts. Use of non-genuine Alpha spares could invalidate your warranty and may pose a potential safety hazard.
Page 36 Primary flow temperature sensor Four fixing nuts for item 15 Combustion chamber front assembly Overheat thermostat Primary heat exchanger Boiler drain points Venturi Gas injector Primary return temperature sensor Spark generator Fig. 7.4 Alpha E-Tec 15, 20, 25R - Routine Servicing...
Page 37: Component Replacement
Unplug the wire from the flue sensor. Using a 13 mm spanner, turn the sensor 90° anti-clockwise and withdraw it from the heat exchanger. Fit the new sensor and re-assemble in reverse order. Alpha E-Tec 15, 20, 25R - Component Replacement...
Page 38 It is important to clean the trap every time the trap is removed to flush out any deposits from the collection bowl. Note: Partially fill the trap before replacing. After cleaning re-fit the trap and re-connect the hoses and the locating screw. Alpha E-Tec 15, 20, 25R - Component Replacement...
Page 39 Remove the screw securing the generator to the bracket and slide out the old generator. Fit the new generator to the bracket making sure that the earth plate is in contact with the bracket. Refit the bracket assembly and reconnect the wires. Alpha E-Tec 15, 20, 25R - Component Replacement...
Page 40: Wiring Diagram
E4 ....Overheat thermostat R ..Red E14 ..Flue thermofuse W ..White G3 ....Spark generator M20..Fan R5 ....Trimmer DHW set R6 ....Trimmer CH set R14 ..Boiler configuration resistance (2.7 kohm) T2 ....Voltage transformer Y1 ....Gas valve Alpha E-Tec 15, 20, 25R - Wiring Diagram...
Page 41: Error Codes And Fault Finding
Where an error code is displayed use the following tables to identify the fault and possible causes. 10.2 ERROR CODES AND FAULT FINDING If any fault or anomaly persists, contact Alpha Heating Innovation Technical Helpline. The history of errors can be viewed in the 'INFO' menu - d9...
Page 42 No primary From ignition the boiler detects no temperature Check for air locks preventing flow temperature increase rise in the primary circuit Check for blocked flow or closed valves detected Alpha E-Tec 15, 20, 25R - Error Codes and Fault Finding...
Page 43: Short Parts List
Clip - Flow/return pipe to heat exchanger 1.026763 Clip - Gas pipe connections 1.020393 Boiler wall bracket 2.015350 Boiler accessory pack complete 3.028540 Wall template 1.041524 Burner front insulation panel 1.039141 Rear combustion insulation panel 1.040351 Alpha E-Tec 15, 20, 25R - Short Parts List...
Page 44: Energy Classification
Contact details Alpha Therm Ltd., Nepicar House, Wrotham Heath, Kent. TN15 7RS (*) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet. (**) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature.
Page 45 Contact details Alpha Therm Ltd., Nepicar House, Wrotham Heath, Kent. TN15 7RS (*) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet. (**) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature.
Page 46 Alpha E-Tec 15, 20, 25R - Energy Classification...
Page 47 * 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 the main appliance of the assembly. Alpha E-Tec 15, 20, 25R - Energy Classification...
Page 48 Alpha E-Tec 15R Alpha E-Tec 20R Alpha E-Tec 25R ‘I’ ‘II’ ‘III’ * To be determined according to Regulation 811/2014 and transient calculation methods as per Notice of the European Community no. 207/2013. Alpha E-Tec 15, 20, 25R - Energy Classification...
Page 49 Alpha E-Tec 15, 20, 25R - Energy Classification...
Page 50: Benchmark Checklist
GAS BOILER SYSTEM COMMISSIONING CHECKLIST & WARRANTY VALIDATION RECORD Address: Boiler make and model: Boiler serial number: Commissioned by (PRINT NAME): Gas Safe registration number: Company name: Telephone number: Company email: Company address: Commissioning date: Heating and hot water system complies with the appropriate Building Regulations? Optional: Building Regulations Notiﬁcation Number (if applicable): Time, temperature control and boiler interlock provided for central heating and hot water Boiler Plus requirements (tick the appropriate box(s))
Page 51: Service Record
SERVICE & INTERIM BOILER WORK RECORD It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed. Service provider When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the manufacturers’...
Page 52 SERVICE & INTERIM BOILER WORK RECORD It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed. Service provider When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the manufacturers’...
Page 53 SERVICE & INTERIM BOILER WORK RECORD It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed. Service provider When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the manufacturers speciﬁed spare parts.
Page 54 Alpha E-Tec 15, 20, 25R - Page intentionally Blank...
Page 55 Alpha E-Tec 15, 20, 25R - Page intentionally Blank...

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Alpha E-Tec 15R Installation And Servicing Instruction

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