6
Switching on
1. Check that the pressure in the central heating system is above 0.7 bar and below 1.5 bar on the pressure gauge
16
(Fig. 1)
should it be neccessary to re-pressurise the system, ensure the filling loop
45
(Fig. 2) is attached, open the filling taps
43
&
44
(Fig. 2), the pressure gauge will now start to rise, once the pressure reads 1.0 bar, close the filling taps and disconnect
the filling loop, periodically check the pressure gauge for correct pressures.
2. Check that the gas service tap is opened at the gas meter and main power is on. Green indicator
26
(Fig. 1) lit.
3. Open the gas tap
39
(Fig.2).
4. The boiler is now ready to use.
N
OTE
:
If the boiler is left off for a long time, some air in the gas pipe can hinder the first
lighting attempt, (please refer to Section 20 Incorrect Operation, page 56).
2. How to Use
Time setting
You can set the time by using the keys underneath the display.
Press the setting key for 5 seconds. The hour digits on the display will begin to flash. Set the correct time by using the or
keys. To alter the minutes, press the setting key again, the minute digits will begin to flash. Set the correct time by using
the
or keys, once the correct time has been set, press the setting key once more to accept the time.
Note: This is not a timer for Central Heating control.
To obtain heating
Turn the Central heating knob (
30
Fig.1
)
between mini and maxi.
During the setting flashes and displays the temperature the knob has been
set to.
The flashing will continue for a while after the setting and the display will then
indicate one of the following :
- the heating temperature when the room thermostat is ON (Calling).
- the time when the room thermostat is OFF (Satisfied).
Room thermostat request
pictogram
BURNER ON and output level
Burner operation is indicated by the symbol. The output of the burner is
then indicated by the flame digits above the burner symbol.
Flame digit
Burner ON
Stand by mode
Turn the control knob
30
(Fig. 1) to the
OFF
position to deactivate the Central
Heating. Leave the ON/OFF button (
26
Fig. 1) On (green light).
During the stand by mode the display indicates the time, the anti-sieze and anti-
frost functions will remain active.
Switch OFF
Press the ON/OFF button (26 Fig.1) the green light will go out.
I
MPORTANT
: W
HILE THE BOILER HAS BEEN SWITCHED OFF THE
C
ENTRAL
H
EATING
,
ANTI
-
FROST AND ANTI
-
SIEZE OPERATIONS WILL BECOME INACTIVE
. T
HE BOILER IS STILL ALSO
CONNECTED TO THE MAINS ELECTRICAL AND GAS SUPPLIES
.
+
+
OPEN CLOSED
Summary of Contents for Minima HE System 24 Nat
Page 19: ...19 1 2 A A Fig 14 Fig 16 Fig 13 11 Installing the Boiler continued Fig 15 P P ...
Page 22: ...22 Fig 21 Fig 22 Fig 23 ...
Page 31: ...31 WIRING DIAGRAM FOR CONNECTION TO AN OPEN VENTED CYLINDER DIAGRAM B ...
Page 32: ...32 WIRING DIAGRAM FOR CONNECTION TO AN MTS UNVENTED CYLINDER DIAGRAM A ...
Page 61: ...61 24 Benchmark Commissioning Checklist ...
Page 62: ...62 25 Service Interval Record ...
Page 63: ...63 ...
