COMBI A - Instruction Manual

14. Commissioning and

14. Commissioning and testing (continued) 14.10 Operational checks 1. The system must be visually checked for soundness; 2. Fill the condensate trap with water, by pouring 1 /2 litre of water into the exhaust flue connector (see Fig. 38). N.B. In the event of a prolonged period of system shutdown, the condensate trap should be filled before any renewed use. A shortage of water in the trap could possibly lead to a temporary leakage of fumes into the air, until it refills itself; 3. Ensure that the flue is fitted correctly; 4. Allow the central heating system to warm up and adjust the central heating temperature control knob 30 (Fig.1), check the burner modulates between the high and low settings; 5. Range rate the thermal power for central heating as detailed in Section 14.5. To adjust the maximum heating power it is necessary to follow the steps in Section 14.5 Menu 4 (page 30). and adjust in relation to the chart on Page 33 (Fig. 39); 6. Check the gas rate; 7. Record the finding in the Benchmark Commissioning Checklist (Section 24, Page 60); 14.11 Instructing the end user 1. Hand over these instructions and explain how to use the time clock and room thermostat and explain how to register the guarantee; 2. Show the end user how to switch the appliance off quickly, and indicate the position of the electric supply isolator; 3. Inform the end user of the location of all drains, isolating valves and air vents; 4. Explain how to turn the appliance off for both short and long periods and advise on the precautions necessary to prevent damage in the event that the appliance is inoperative when freezing conditions occur; 5. Instruct the end user on the correct procedure for checking and refilling the boiler; 6. Finally advise the end user that, for continued safe and efficient operation, the appliance must be serviced by a competent person at least once a year and the service logged in the Service Interval Record (Section 25, Page 61). 8. Run the domestic hot water and adjust to the correct water flow rate, adjust the domestic hot water temperature control knob 29 (Fig.1) to ensure the burner modulates between the high and low settings; 9. Balance the central heating system until all return temperatures are correct and equal; 10. Turn the boiler off by pressing the On/Off button 26 (Fig.1) to OFF, disconnect the gas pressure gauge, retighten the screw and relight the boiler; 11. Re-examine the central heating, domestic hot water and old water supplies for soundness; 12. If external controls have been disconnected, reconnect and test; 13. Refit the boiler casing. Fig. 38 32

14. Commissioning and testing (continued) 24 kW 30 kW 24 30 22.4 28 35 kW 35 32.5 20.8 26 30 Central Heating Output (kW) 19.2 17.6 16 14.4 12.8 11.2 24 22 20 18 16 14 27.5 25 22.5 20 17.5 15 9.6 12 12.5 8 10 10 0 1 2 3 4 5 6 7 8 9 10 Steps (Value P min - P max - Menu 4) Fig. 39 15. Fitting the casing Fitting the casing Remove the protective film on the casing; - Locate the lower clips into the slots in the chassis; - Engage hooks N on the casing in notches R on the side panels M (Fig. 40); - Close the panel mounting clamps (Fig. 41); - Screw in the clamp locking bolt A; Note: it is essential to refit the locking bolt A A N M 1 R Fig. 40 Fig. 41 33