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Instruction manual ADM 45
gis
9 Starting and running
9.1 Introduction
Topics covered in this chapter, in sequence:
Starting the appliance;
The appliance's heating cycle
.
9.2 Starting the appliance
Start the appliance as follows:
1. Fill the appliance (5 "
Filling").
2. Open (3.5 "
Installation diagram") the manual gas
valve.
3. Switch on the power to the appliance using the
isolator between the appliance and the power
supply.
4. Begin the ignition procedure by pressing and
holding the white button (1) on the gas control
while repeatedly pressing the piezo igniter (2) until
the pilot flame ignites. See the figure. The pilot
flame can be seen through the inspection window
above the burner tray.
Gas control
5. Keep the white button pressed in for about 30
seconds before carefully releasing it. The pilot
flame should now stay lit.
6. Set the appliance in the "ON" mode by setting the
on/off switch on the control panel to position I.
7. Using the control thermostat (7.3 "
Control
thermostat"), set the desired water temperature.
If there is a heat demand, the appliance will run
through the heating cycle (9.3 "
The appliance's
heating cycle").
Warning
If the pilot flame goes out during the heating cycle
or ignition procedure, you must wait 5 minutes before
repeating the ignition procedure.
9.3 The appliance's heating cycle
The appliance's heating cycle is activated when the
measured water temperature (T
water
) falls below the
threshold value (T
set
). T
set
can be adjusted using the
control thermostat, for example position 3 (± 60 °C).
The heating cycle runs successively through the
following states:
1. HEAT DEMAND;
2. IGNITION;
3. RUNNING.
The complete cycle is explained in the example set out
below.
1. The control thermostat sensor measures the water
temperature (T
water
). If T
water
drops below the set
temperature (T
set
), there is demand and the
control thermostat will close. This will cause the
gas control to open.
2. Once the gas control is open, the pilot burner will
ignite the gas flow.
3. The appliance is now running. This means that
actual heating has started. When the water
reaches the set temperature, the demand ceases.
The gas control closes and the burner tray is
extinguished (the pilot flame stays lit).
4. The appliance is now said to be in an idle state,
waiting until T
water
once again falls below T
set
.
With any subsequent heat demand, the heating cycle
will resume from step 1.
3
1
2
IMD-0195 R1
45


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