Domestic Hot Water Eco And Preheat Modes; Domestic Hot Water: Switching Between Eco And Preheat Modes; Turn Off The Operation/Fault Diagnostic Light - Worcester Greenstar i System Compact ErP Series User Instructions

Controls

3.1.7 Domestic hot water eco and preheat modes

• Eco mode is an energy saving feature which disables the Preheat function:
– Eco is enabled by default, during the initial appliance start up and "Eco" [2] will be displayed to confirm this state.
– During the ON periods [1] set by the time control, Eco mode will use less energy, because the boiler will maintain a slightly
lower average temperature.
• Preheat mode, the appliance heats the cylinder more frequently. This tops up the cylinder temperature for quicker heat up
times, this is useful for large/longer demand periods during the hot water ON periods, "PreHeat" [3] will be displayed to confirm
this state.
– During the ON periods [1]set by the time control, the cylinder is heated more regularly to reduce the time taken to deliver
hot water.
1
2
Eco

3.1.8 Domestic hot water: switching between Eco and Preheat modes

1. Press and hold the Eco button
"Eco" will be displayed.
To exit Eco mode and return to PreHeat
2. Press and hold the Eco button
Eco
PreHeat
Fig. 3 Switching between Eco & Preheat mode
3.1.9 Turn off the Operation/fault diagnostic light (blue)
You may choose to deactivate the operation/fault diagnostic light. Please ask your installer to set-up this feature.
The light will still flash to alert you to a possible fault, but will not activate during a heat requirement demand for heating or hot water.
10
°C
°F
ok
for at least four seconds to enter the energy saving Eco mode, when Eco mode is active,
ok
for at least four seconds and "PreHeat" will be displayed.
°C
eco
°F
reset
min
°C
°F
1
3
°C
ok
°F
1.
Eco
e
max
Greenstar i System
PreHeat
min
6720813281-02.1Wo
ErP - 6 720 813 281 (2014/09)
°C
°F
2
1 1
3
0 4
bar
max