Genus HE 35 Plus Manual

15. COMMISSIONING 15.1

15. COMMISSIONING 15.1 Initial Preparation MTS (GB) Limited support the initiative. Within the information pack you will find a copy of the Log Book. It is important that this is completed in the presence of your customer, they are shown how to use it, and it is signed by them. Please instruct your customer that they must have their Log Book with them whenever they contact a service engineer or us. Preliminary electrical system checks to ensure electrical safety must be carried out by a competent person i.e. polarity, earth continuity, resistance to earth and short circuit. FILLING THE HEATING SYSTEM: Lower the control panel and remove the case panels (see SECTION 15.3 for further information). Open the central heating flow and return cocks supplied with the connection kit. Unscrew the cap on the automatic air release valve one full turn and leave open permanently. Close all air release valves on the central heating system. Gradually open valve(s) at the filling point (filling-loop) connection to the central heating system until water is heard to flow, do not open fully. Open each air release tap starting with the lowest point and close them only when clear water, free of air, is visible. FIG. 15.1 Purge the air from the pump by unscrewing the pump plug anticlockwise, also manually rotate the pump shaft in the direction indicated by the pump label to ensure the pump is free. Refit the pump plug. Continue filling the system until at least 1.5 bar registers on the pressure gauge. Inspect the system for water soundness and remedy any leaks discovered. FILLING OF THE D.H.W. SYSTEM: Close all hot water draw-off taps. Open the cold water inlet cock supplied with the connection kit. Open slowly each draw-off tap and close them only when clear water, free of bubbles, is visible. GAS SUPPLY: Inspect the entire installation including the gas meter and test for soundness. The gas installation should be in accordance with the relevant standards. In GB this is BS6891 and in IE this is the current edition of I.S.813. The connection to the appliance is a 15 mm copper tail located at the rear of the gas service cock (Fig. 10.3). If the gas supply for the boiler serves other appliances ensure that an adequate supply is available both to the boiler and the other appliances when they are in use at the same time. Pipe work must be of an adequate size. Pipes less than the 22 mm should not be used. Open the gas cock (supplied with the connection kit) to the appliance and check the gas connections on the appliance for leaks. 34

When the installation and filling are completed, flush the system while cold, refill, turn on the Central Heating system (SECTION 3) and run it until the temperature has reached the boiler operating temperature. The system must then be immediately flushed through. The flushing procedure must be in line with BS 7593:1992 code of practice for treatment of water in domestic hot water central heating systems. During this operation, we highly recommend the use of a central heating flushing detergent (Fernox Superfloc or equivalent), whose function is to dissolve any foreign matter that may be in the system. Substances different from these could create serious problems to the pump or other components. The use of an inhibitor in the system such as Fernox MB-1 or equivalent is strongly recommended to prevent corrosion (sludge) damaging the boiler and system, following the flushing procedure.. Failure to carry out this procedure may invalidate the appliance warranty. 15.2 Completion For IE it is necessary to complete a “Declaration of Conformity” to indicate compliance to I.S.813. An example of this is given in the current edition of I.S.813. In addition it is necessary to complete the “Benchmark” Log Book. 35