Heatrae Sadia ELECTROMAX SOLAR Installation & Servicing Instructions Manual page 36

11. Check central heating system for leaks and rectify as necessary.
12. When the central heating pressure gauge remains steady at between 0.1 - 0.15 MPa (1.0
- 1.5 bar) ensure both filling loop isolating valves are closed and remove the filling loop
flexible hose from the central heating system connection point.
4.3.2 CHECK THE OPERATION OF THE SAFETY VALVES
1. Slowly, manually, open the central heating expansion relief valve for a few seconds. Check
that the water discharged runs freely away through the tundish and discharge pipework.
Close the valve, ensure water flow stops and the valve reseats correctly.
2. Check that the central heating system pressure has not dropped below 0.1 MPa (1.0 bar).
If it has re-connect the filling loop and refill until the central heating gauge reads between
0.1 - 0.15 Mpa (1.0 -1.5 bar). Ensure both filling loop isolating valves are closed and re-
move the filling loop flexible hose from the central heating system connection point.
4.4 SET THE PROGRAMMABLE ROOM THERMOSTAT
1. Fit the batteries supplied with the programmable room thermostat. The battery compart-
ment is located behind the hinged cover under a snap fit panel. Ensure the batteries are
inserted with the correct polarity.
2. Using the instructions supplied with the programmable room Thermostat set the time and
day on the clock display.
3. The programmable room thermostat is supplied with a number of factory preset pro-
grammes, these are listed in the instruction leaflet. These can be reset to other periods
depending on the users requirements.
4. To obtain lower running costs it is recommended that central heating on times be pro-
grammed to coincide (wherever feasible) with any off peak tariff periods available during
the day.
5. The programmable room thermostat does not control the domestic hot water heating
times.
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