Setting The Dhw Temperature; Summer Mode; (Central Heating Off, Dhw Only); Frost Protection - Worcester GREENSTAR 24 Installation, Commissioning And Servicing Instructions

Commissioning
▶ Record the settings in the Benchmark Commissioning checklist at the
back of this manual.
FITTING THE FASCIA FLAP
▶ Check the orientation of dampers [1] ( Fig. 52).
▶ Click the flap into place from below.
Fig. 52 Fitting the flap
▶ Close the flap. The flap locks into place.
▶ To open the flap, push in the upper middle part of the flap and release
it. The flap will then open.
Fig. 53 Opening the flap
6.11

SETTING THE DHW TEMPERATURE

▶ Set the DHW temperature on the DHW temperature control
The set DHW temperature flashes on the display for 30 seconds.
3 4
2 5
1
6
max
Fig. 54
32
1
.
reset
eco
4
3
e
2
1
6
max
6 720 614 156-11.1O
DHW thermostat
min
e
max
Table 20
ECO KEY
Holding down the eco key until it illuminates switches between Comfort
mode and Economy mode.
COMFORT MODE, ECO KEY IS NOT LIT (DEFAULT SETTING)
The appliance is held constantly at the set temperature. This means that
hot water is available almost instantaneously at the tap.
Consequently the appliance will switch on at intervals, even if no hot
water is being drawn.
ECONOMY MODE, ECO KEY LIT
The appliance does not switch on until the start delay has
elapsed if a start delay has been set
(service function b.F).
• DHW is not heated up until a hot water tap is turned on.
• Signalling demand.
Briefly turning a hot water tap on and then off signals demand so that
the water is then heated up to the set temperature.
Signalling demand enables maximum gas and water
economy.
6.12

SUMMER MODE

(CENTRAL HEATING OFF, DHW ONLY)

▶ Note position of CH flow temperature control
▶ Turn CH flow temperature control
stop .
The heating circuit pump and consequently central heating are
switched OFF. However, the DHW supply as well as the power supply
to the heating controller and timer remain "live".
3
5
2
1 6
max
NOTICE: Risk of heating system freezing.
Additional instructions are contained in the operating instructions for
the heating controller.
6.13

FROST PROTECTION

Frost protection for the heating system:
DHW temperature
Approx. 40 °C
Approx. 50 °C
Approx. 60 °C
.
anti-clockwise as far as the
reset
eco
3 4
e
2
6
1
min
max
6 720 615 065-13.1O
6 720 811 922 (2014/07)