Ideal Boilers Classic FF 340 LF Installation And Servicing Manual

Also see for Classic FF 340 LF: User guide

26Classic FF 340 - 360 LF - Installation & ServicingINSTALLATION45 COMMISSIONING AND TESTINGA. ELECTRICAL INSTALLATION1. Checks to ensure electrical safety should be carriedout by a competent person.2. ALWAYS carry out preliminary electrical system checks,i.e. earth continuity, polarity, resistance to earth andshort circuit using a suitable test meter.WARNING. Whilst effecting the required gas soundness test and purging air from the gas installation open allwindows and doors, extinguish naked lights and DO NOT SMOKE.B. GAS INSTALLATION1. The whole of the gas installation, including the meter, MUST beinspected and tested for soundness, and purged inaccordance with the recommendations of BS. 6891.In IE refer to I.S.813:2002.2. Purging air from the gas installation may be expedited byloosening the union on the gas service cock on the boiler andpurging until gas is detected.3. Retighten the union and check for gas soundness.TO LIGHT THE BOILER1. Check that all the drain cocks are closed, and any valves inthe flow and return are open.2. Check that the gas service cock (B) is OPEN and the boilermains On/Off switch is OFF.3. Fitting the Boiler CasingThe boiler casing must be refitted with the controls supportcasing attached for alignment purposes. Lift the boilercasing up to the boiler assembly, with the casing topangled forward. Hook the top edge of the boiler casing intothe channel on the top of the boiler assembly. Swing thebottom of the casing down and secure with the 2 captivescrews.The casing must seat correctly and compress the sealingstrip to make an airtight joint.Visually check the side seals but, if side clearances arelimited, then check that the top and bottom edges of thecasing are correctly located.If the Sealed System Unit is fitted remove the unit casing inorder to inspect the top casing seal.To gain access to the gas valve:a. Remove the controls support casing. Release thecontrols support front fixing screws 3 turns only. Removethe pod by pulling it forward to disengage from thekeyhole slots.b. Remove the control box securing screws and swing itdown into the servicing position. See diagram B.4. Slacken the screw in the burner pressure test point (F) andconnect a gas pressure gauge via a flexible tube.5. Swing the control box back into its working position.6. Press the overheat thermostat reset button (J).7. Switch the electricity supply ON and check that all externalcontrols are calling for heat.46 INITIAL LIGHTING8. Set the boiler thermostat knob (D) to position 6 and theboiler Mains On/Off switch to ON. The fan will start. After thefan has run for a few seconds the pilot solenoid valveshould open and the intermittent spark commence,continuing until the pilot is established. The main burner willthen cross-light smoothly. If this sequence does not occur,refer to the Fault Finding section.9. Test for gas soundness around ALL boiler gas componentsusing leak detection fluid.10. Operate the for 10 minutes to stabilise the burnertemperature.11. The boiler is preset at the factory to its nominal rating.a. Set the mains On/Off switch to OFF.b. Switch the electricity supply OFF.c. Swing the control box down into the servicing position.d. Remove the main burner adjuster cover.e. Turn the adjusting screwclockwise to INCREASE thepressure, oranticlockwise to DECREASE the pressure.f. Swing the control box back into its working position.g. Switch the electricity supply ON.h. Set the mains On/Off switch to ON and check the newsetting pressure.12. If necessary repeat steps 11a to h until the requiredpressure is achieved. Record this value in the Benchmarklog book.13. Set the main On/Off switch to OFF.14. Switch the electricity supply OFF.15. Swing the control box down into the servicing position.16. Refit the main burner pressure adjuster cover.17. Remove the pressure gauge and tube. Retighten thesealing screw in the pressure test point. Ensure a gas tightseal is made.18. Swing the control box back into its working position andsecure.19. Remove the boiler casing.20. Refit the controls support to the boiler casing and tighten the2 front fixing screws.21. Refit the complete casing to the boiler.22. Close the pod door.LEGENDA Sightglass.B Gas service cock.C Inlet pressure test point.D Thermostat knobE Main burner pressure adjuster.F Burner pressure test point.H Boiler mains on/off switch.J Overheat thermostat resetbutton.The Benchmark Log Book or equivalent self certification should be completed and signed to demonstrate compliance withBuilding Regulations.INSTALLATION