Ariston EURO COMBI A/23 MFFI Kurulum Talimatları Kılavuzu - Sayfa 17
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2.12 Water Circuit Diagram
A/23 MFFI - A/27 MFFI
3
COMMISSIONING
3.1
Initial Preparation
B023
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:
Remove the panels of the case and lower the control panel (see point 3.2. 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 lower point and close it only when
clear water, free of air, is visible.
Purge the air from the pump by unscrewing anticlockwise the pump plug and
also manually rotate the pump shaft in the direction indicated by the pump
label to ensure the pump is free.
Close the pump plug.
Continue filling the system until at least 1 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 it only when clear water, free of
bubbles, is visible
Gas Supply:
Inspect the entire installation including the gas meter, test for soundness and
purge, all as described in BS 6891:1988.
Open the gas cock (supplied with the connection kit) to the appliance and
check the gas connector on the appliance for leaks.
When the installation and filling are completed turn on the central heating
Legend
1. Air Pressure Switch
2. Fan
3. Main Heat Exchanger
4. Main Burner
5. Ignition Electrodes
Detection Electrode
6. Gas Valve
7. Overheat Thermostat
8. Main Circuit Temperature Probe
9. Diverter Valve
10. Main Circuit Flow Switch including
Safety Pressure Switch for
Primary Circuit
11. Automatic By-pass
12. Microswitch for Diverter Valve
13. Secondary Heat Exchanger
14. Domestic Water Inlet Filter
15. Boiler Drain Valve
16. Safety Valve
17. Water Pressure Gauge
18. Circulation Pump with Automatic
Air Release Valve
19. Expansion Vessel
17