5 INSTALLER IMPORTANT POINTS Please read all instructions before fitting this appliance The installer shall instruct the user on the operation of the boiler, safety devices contained within the boiler and on the location of the filling loop and how to re-pressurise the system if the water pressure falls. The installer should hand over the installation and user instructions upon completion with the completed Benchmark Commissioning Checklist. The service engineer must complete the service record on the Benchmark Checklist after each service.
It is required under Gas Safe Regulations for the installation to be notified to and registered with Gas Safe, Intergas and Building Control (Gas Safe Notifcation). Before proceeding to commission the boiler check the gas inlet pressure is 20mbar (NG) or 37mbar for LPG. Combustion analysis with a correctly calibrated and certificated analyser is essential for safe commissioning of the boiler. A pressure reducing valve set to 3.5 bar must be fitted if supply mains pressure is above 4 bar. In hard water areas where the PH is 200ppm or above, appropriate protection actions must be taken in accordance with BS 7593 in line with building regulations Part L.
(See T&C) The user should be instructed to keep the instructions in a safe place for servicing and future reference. It is important to keep the boiler clear of dust during the installation. In particular, do not allow debris to enter the flue connection at the top. Before fitting the boiler ensure that the pipe work that you are installing is connected to the appropriate connections on the boiler. It is important to thoroughly flush the water circuits after isolating the boiler, in order to remove any fluxes, debris and all cleansing chemicals from the system.
This should be done particularly where boilers are being fitted to existing radiator circuits (please refer to current Standard Codes of Practice). Intergas recommend water treatment in accordance with the Benchmark Guidance on Water Treatment in Central Heating Systems, we recommend the use of FERNOX, SENTINEL or ADEY inhibitors. It is most important that correct concentration of water treatment is maintained for the life of the boiler, a water sample is required on installation and to be verified by the aforementioned manufacturers should we attend a warranty call a water sample may be required to keep the warranty valid.
(BS 7593:2006) This boiler has been factory set but adjustment may be required to the heating input in order to match the individual heating demand. This can be done by changing parameter 3 (= max. power CH) or parameter 4 (= max. power domestic water). Please do not use the pressure relief valve as a means of flushing the system. Remember that after hot water draw of a possible delay may occur before the heating system will fire up. All fluxes, residues and cleaner must be flushed from pipe-work and radiators prior to commissioning. External expansion vessels are best connected water side downwards to allow correct draining/cleaning of system and to prolong the life of the vessel diaphragm.
Note: an anti-cycle delay time can be set up to a maximum of 15 minutes by adjusting parameter P as described in § 10.3. If you experience any problems please refer to the installation and commissioning guidelines within the boiler instruction manual. If necessary, please contact Intergas Heating Ltd (See § 1.8). Remember it is a requirement to complete the Benchmark code of practice logbook before leaving the installation. You are also required to register the boiler through the Gas Safe registration scheme and with Intergas. Intergas Heating Ltd 16