Turning The Central Heating Off During The Summer; Appliance Frost Protection - Worcester Greenstar 9i System ErP User Instructions

Controls
3.2.3 Set economic temperature - Central heating
This setting ensures that the appliance will operate efficiently and is suitable for most heating system.
The home screen will show the current appliance temperature [1].
▶ Press both the central heating adjustment buttons.
The display will change to the economic value for the central heating [2].
▶ Press the OK button to confirm the value selection, the display will also return to the home screen [3].
-or-
▶ Wait 4 seconds for auto confirm and the display will return to the home screen [3].
Fig. 5 Central heating economic temperature

3.2.4 Turning the central heating off during the summer

Do not switch the appliance off at the mains fused spur.
▶ To turn your central heating off during warm periods:
▶ Set the programmer to OFF
-or-
▶ Turn the room thermostat temperature down to minimum.

3.2.5 Appliance frost protection

If you are leaving your property unoccupied during cold weather, please leave your programmer on constant and your room
thermostat set to 15°C.
▶ If the temperature within the appliance falls below 8°C the pump will run to circulate water and prevent the system freezing.
– If the temperature does not rise to 9°C within 30 minutes of the pump operating, the appliance will fire up.
▶ If the temperature within the appliance falls below 5°C the appliance will fire immediately, bringing the appliance temperature
up to 12°C to avoid the possibility of the appliance freezing.
▶ This process will be repeated until such time that the appliance temperature does not drop below 8°C.
14
1
Greenstar i System
2
Eco
Wait 4 seconds
for auto confirm
– 6 720 806 947 (2015/03)
ErP