19
ers. It shall be from a reputable manufacturer and
shall be administered in strict accordance with the
manufacturers’ instructions and the DWTA code
of practice.
5.8.1
INHIBITORS
See Section 3 “General Requirements”.
5.9
SETTING THE BOILER OPERATING TEMPERA-
TURE
The flow outlet temperature can be adjusted be-
tween 39 °C - 80 °C via the Heating thermostat
knob (see fig.1).
5.9.1
SETTING THE DOMESTIC HOT WATER TEM-
PERATURE
The DHW outlet temperature can be adjusted
between 35 °C - 60 °C via the Hot Water thermostat
knob (see fig.1).
5.9.2
INFORMATION MODE
The appliance keypad can be used to display
certain information on the working status of the
boiler. Push the Info button ( ) to enter the info
menu (fig. 18). The following information are shown
pushing subsequently the button:
Info 1
outside temperature (only if outside sensor
connected) (fig. 20)
Info 2
water pressure (fig. 21)
Info 3
CH temperature set (fig. 22)
Info 4
DHW temperature set (fig. 23)
.
5.9.3
INFORMATION MODE SERVICE
Push and hold for 10 seconds the Info button ( )
to enter the info menu service (
INF2 is shown on
the display
). The following information are shown
pushing subsequently the button:
5.9.4
ADJUSTING APPLIANCE PARAMETERS
The appliance is delivered with pre-set param-
eters. Some parameters can be changed or ad-
justed if required. For further details, please refer
to section 7.
5.10
SETTING THE SYSTEM DESIGN PRESSURE
The design pressure should be a minimum of 0.5
BAR and a maximum of 1.5 BAR.
The actual reading should ideally be 1 BAR plus
the equivalent height in metres (0.1 BAR = 1
metre) to the highest point in the system above the
base of the appliance (up to the maximum of 1.5
BAR total).
N.B. The safety valve is set to lift at 3 BAR/30
metres/45 psig.
To lower the system pressure to the required
value, drain off some water from the appliance
drain valve until the required figure registers on the
pressure gauge (see fig. 1).
5.11
REGULATING THE HOT WATER
The appliance is fitted with a flow rate restrictor
that limits the maximum flow rate that can be
drawn through the appliance.
The restrictor eliminates the need to manually
adjust the DHW flow rate. However if it is felt
necessary to further increase or decrease the
available flow rate, spare restrictors are included
in the accessory pack.
The spare flow rate restrictors can be fitted to
either increase or decrease the maximum flow
rate. The tables overleaf denote the size of restrictor
fitted and the spare restrictors supplied in the
accessory pack. Each restrictor is colour-coded
to enable identification.
Step number
Information displayed
01
Temperature at flow sensor °C
02
Temperature at return sensor °C
03
Temperature at hot water outlet sensor °C
04
Unused
05
Unused
06
Unused
07
Unused
FAN
Fan speed RPM/100
09
Unused
10
Unused
Fig. 19
Fig. 20
Fig. 21
Fig. 22
Fig. 23
Fig. 19
Fig. 20
Fig. 21
Fig. 22
Fig. 23