40
- Starting with the lowest radiator open each
air release tap in turn. Close when the
water is clear, free of bubbles and flows
out. In the same way release air from any
high points in the pipework.
- Continue filling the system until 1.5 bar
Continue filling the system until 1.5 bar
register on digital display.
register on digital display. Press the P
Press the P
button once again to return to the main
button once again to return to the main
screen.
screen.
Then turn off the filling points stopcock.
- Inspect the system for water soundness
and remedy any leaks discovered.
6.4 SETTING THE HEATING SYSTEM DESIGN
PRESSURE
The design pressure must be a min. 1bar
and max. 1.5 bar. These figures are read on
the digital display by pressing the P button.
The actual reading should ideally be 1 bar +
the height in metres to the highest point of
the system above the base of the
appliance (up to max of 1.5
1.5 bar).
N.B.: The safety valve is set to lift at
3 bar (30 m/42.5 psi).
To lower the system pressure to the
required value remove at the drain point
(fig. 36) or drain on the heating circuit.
6.5
FILLING THE HOT WATER SYSTEM
Close all hot water draw-off taps.
Open the cold water inlet cock.
Slowly open each draw-off tap until clear water
is discharged.
6.6
LIGHTING THE BOILER
Before lighting the boiler make sure that
the heating circuit flow and return valves are
open and also that the cold water input cock
is open.
- If external controls are installed (E.g. time
E.g. time
clock and thermostat) make sure that they
clock and thermostat) make sure that they
are calling for heat.
are calling for heat.
- Select winter function, the winter icon in
- Select winter function, the winter icon in
digital display will be flashing (item 3 fig.
digital display will be flashing (item 3 fig.
2).
2).
- To select the minimum heating temperature
- To select the minimum heating temperature
press the radiator button.
press the radiator button.
IMPORTANT:
IMPORTANT:
Before lighting the boiler select the minimum
Before lighting the boiler select the minimum
central heating temperature. This must be left
central heating temperature. This must be left
at minimum for approx 5 mins to purge air
at minimum for approx 5 mins to purge air
safely from the boiler.
safely from the boiler.
Fig. 36
Fig. 35
- To select the minimum heating temperature
To select the minimum heating temperature
press the radiator button.
press the radiator button.
- Press arrow up and arrow down buttons to
- Press arrow up and arrow down buttons to
adjust.
adjust.
- The digital display shows the current set
- The digital display shows the current set
temperature in central heating.
temperature in central heating.
- After a few seconds the digital display shows
- After a few seconds the digital display shows
the central heating temperature in demand
the central heating temperature in demand
(CH icon flashing, item 3 fig. 2).
(CH icon flashing, item 3 fig. 2).
- The fan starts and after a few seconds or
- The fan starts and after a few seconds or
so the digital led display will show that the
so the digital led display will show that the
ignition has commenced.
ignition has commenced.
- NOTES: Put the digital clock in demand
- NOTES: Put the digital clock in demand
position.
position.
Содержание HE 80 T
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Страница 64: ...64 FLOWCHART FOR CO LEVEL AND COMBUSTION RATIO CHECK ON COMMISSIONING A CONDENSING BOILER...
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