Benchmark Alpha InTec 12SLPG Service Manual

Installation and ServicingInstructionsAlpha InTec 12S, 18S, 28SRange of Wall Mounted, Fan Assisted, Room Sealed,Gas Fired, High Efficiency Condensing S

103.5 FLUE TERMINAL LOCATION - Figs. 4 and 5Alpha InTec S - General Boiler InformationA Directly below an opening, air brick, windows, etc.B Below

113.6 BOILER LOCATIONThe boiler is not suitable for external installation unless it is installed within a purpose designed weatherproof building.The

123.7 CENTRAL HEATING SYSTEM - Fig. 6The boiler is designed for use in a sealed central heating system in accordance with the requirements of BS EN 1

13Alpha InTec S - General Boiler Information3.9 FLUSHING THE HEATING SYSTEMIt is essential that the central heating system is thoroughly cleaned and

14Alpha InTec S - General Boiler InformationFig. 9 - External soakawayFig. 8 - External gullyOpen end of pipediverted into gullybelow grid but abovewa

154.3 PREPARE THE WALL - Fig. 11If the optional wall jig is used refer to the instructions supplied with the kit.1. Decide upon the position of the

164. Cut the 110 mm diameter hole (or use a 107 mm core drill) in the wall for the flue. Notes: 1. Ensure the hole is horizontal. 2. For intern

172320Heating drainpointCyclone drainpointWall jigCondensatetrapHeating returnvalvesHeating flowvalveB DCA65 457058202Condensatedischarge pipe4.6 FIT

184.7 REDUCING THE FLUE - Fig. 19When the flue length required is less than the minimum stated in Section 4.6, paragraph 1, refer to Fig. 19.Discard t

19Alpha InTec S - Installation4.8 EXTENDING THE FLUE - Fig. 20Note: The flue assembly length must not exceed the maximum length stated, including the

2Alpha InTec S - Benchmark SchemeBENCHMARK SCHEMETo comply with Building Regulations Part L1 (Part 6 in Scotland) the boiler should be installed in ac

20Alpha InTec S - Installation10. Secure the flue assembly to the bend with the clamp ensuring it is positioned centrally over the joint, ensuring the

21Alpha InTec S - InstallationPM length = C + (1 x 93° bend = 1.3 m) + (2 x 45° bends = 1.8 m)CMin.400 mmCD Easy-FlueFlue sealing collarTerminal end s

224.10 CONNECT THE MAINS SUPPLY - Fig. 231. Gain access to the boiler terminal block by releasing the two fixing screws (one each side) securing the

23Alpha InTec S - InstallationInTecBoilerDHW storage cylinderAlpha diverter valveAutomatic by-pass valveCylinder sensorHeating circuitABAB4.12 OPTION

24Alpha InTec S - Commissioning5 COMMISSIONINGFig. 26When commissioning the boiler, ensure the Benchmark Checklist is completed.5.1 FILL THE SYSTEM1

255.4 INITIAL LIGHTING - Refer to Fig. 261. Before turning on the gas and electrical supplies check the heating system is filled to the correct press

26Alpha InTec S - Commissioning5.6 CHECK THE BURNER PRESSURES AND COMBUSTION - Figs. 27, 28Press and hold in the reset button for eight seconds and t

275.9 USER INFORMATIONThe User must be advised (and demonstrated if necessary) of the following important points:-1. How to light and turn off the b

28Alpha InTec S - Routine Servicing6 ROUTINE SERVICINGTo ensure efficient operation of the boiler it is recommended that it is checked and serviced as

29Fig. 296.2 PREPARE FOR SERVICING - Fig. 291. Ensure the electrical supply is isolated and the gas supply is off.2. Release the two screws securin

3Alpha InTec S - Contents/IntroductionCONTENTS1 Introduction ...22 Technical data ...

30Alpha InTec S - Routine Servicing6.4 RE-ASSEMBLE THE BOILER1. Replace the burner, ensuring it is located correctly and secure it in position using

31It is the law that any service work must be carried out by a competent person, i.e. Gas Safe registered personnel.Warning: Before replacing any boil

327.6 FAN - Fig. 291. Gain access behind the room sealed chamber as described in Section 7.1.2. Remove the two screws securing the air supply pipe

337.10 GAS VALVE - Fig. 31Note: The replacement of the gas valve or PCB must be carried out by a Gas Safe registered engineer with the use of a flue

34Alpha InTec S - Component Replacement7.15 CONDENSATE TRAP - Fig. 131. Gain access behind the front casing as described in Section 7.1.2. Disconne

35Alpha InTec S - Component Replacement7.21 AUTOMATIC AIR VENT - Fig. 341. Gain access behind the front casing and drain the boiler heating circuit

36Alpha InTec S - Component Replacement7.25 EXPANSION VESSEL - Fig. 311. Gain access behind the front casing and drain the boiler heating circuit as

37Alpha InTec S - Wiring Diagrams8.1 ILLUSTRATED WIRING DIAGRAM8 WIRING DIAGRAMSGasValveBrGyBkWWOrOrRWBlOrBkRBr BlG/YRRBkWWGGRGyBlSparkGeneratorFlam

388.2 FUNCTIONAL FLOW WIRING DIAGRAMAlpha InTec S - Wiring DiagramsAlpha Control(Optional)12345PumpGas ValveFlowSensorSystem Pressure SwitchFuse 3.15

39Alpha InTec S - Fault Finding9 ERROR CODES AND FAULT FINDING9.1 CARRY OUT INITIAL FAULT FINDING CHECKS1. Check that gas, electrical and water sup

431.528.430.7287.23.02082N/A0.151.45362059.58.7272000.00390.688.92.50.51.03.08.01.01256Alpha InTec S - Technical Data2 TECHNICAL DATA2.1 TECHNICAL P

40Alpha InTec S - Fault FindingErrorcodeFault Fault description Possible causesCheck flame sensing electrode and leadPCB faultCheck for jammed control

41Alpha InTec S - Short Parts List10 SHORT PARTS LISTReferenceDescriptionBritish Gas GC No.Alpha Pt. No.Qty.1.0181621.0235513.0172811.0242961.0257971

This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstratingcompliance with

© Heating and Hotwater Industry Council (HHIC) www.centralheating.co.ukAll installations in England and wales must be notified to Local Authority Buil

Manual compiled and designed by Publications 2000 - Tel: 01670 356211 09/13 D332These instructions have been carefully prepared but we reserve the ri

5Alpha InTec S - Technical Data2.3 PHYSICAL DATABoiler flow connections mmBoiler return connections mmRelief valve connection mmGas connectio

6Alpha InTec S - Technical Data2.5 AVAILABLE PUMP HEAD FOR CENTRAL HEATINGFlow (litres/hr)Head (metres)200 600 1000 1400800 12001600400000.51.01.52.0

72.7 BOILER SCHEMATICFig. 21 - Heat exchanger thermal fuse2 - Gas valve3 - Primary temperature sensor4 - Main burner5 - Primary/condensing

83.1 GAS SUPPLYThe meter and supply pipes must be capable of delivering the required quantity of gas in addition to the demand from any other applian

9L = B + C + E + 245 mmAlpha InTec S - General Boiler InformationL = B + C + 245 mmCBECBEBFBCL = B + E + F + 245 mm + (90° bend = 1.3 metre)(add 45 mm