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Installation
46 Instruction manual SGE
3
is
3.13.4 Switching pressure measurement
To measure the switching pressure, proceed as follows:
1. Isolate (10.3 "
Isolating the water heater from the mains") the appliance from
the power supply.
2. Carefully remove the covers from the appliance.
3. The electrical section is now visible.
4. Remove the black caps from the measurement point of the pressure switch.
5. Connect the + of the pressure gauge to the H of the measurement point of
the pressure switch.
6. Connect the - of the pressure gauge to the L of the measurement point of
the pressure switch.
7. Zero the pressure gauge.
8. Start (9 "
Starting the water heater") the appliance.
9. The appliance will now run the heating cycle (9.3 "
The appliance's heating
cycle").
10. Read the pressure from the meter at the moment when the appliance
switches from
PRE PURGE
to
PRESSURE SWITCH
. At this point, the
appliance's display will show:
11. Check whether the measured value matches the value from the
table (3.4.3 "
Gas data").
Note
If the message
PRESSURE SWITCH
does not appear, there is a fault. This
must be resolved first by a qualified service engineer.
12. Shut off the gas supply.
13. Disconnect the pressure gauge.
14. Put the two black caps back on the pressure switch.
15. Replace the covers.
ON Ê Ê Ê
13:45 Thursday 63ÉC
Tset 65ÉC
PRESSURE SWITCH
a