Schwank infraSchwank D Series Technical Manual page 46

infraSchwank D / calorSchwank D shape U
Now press buttons SW3 [-] oder SW2 [+] so that
the measured nozzle pressure will be 1 mbar
above the required maximum value
[e.g. 13 hPa].
15. If the value cannot be reached, the maximal
mechanical limitation at the modulating
regulator [large adjusting screw C] needs to be
amended.
Afterwards continue with adjusting to the
required minimum value.
16. To store the new parameter setting, press SW2
and SW3 buttons together for 3 seconds and
leave the setting level.
17. Select the setting level for parameter PP07.
Now press buttons SW3 [-] oder SW2 [+] so that
the measured nozzle pressure will be 1 mbar
below the required minimum value
[e.g. 7,5 hPa].
18. If the value cannot be reached, the minimal
mechanical limitation at the modulating
regulator [small adjusting screw B] needs to be
amended.
Afterwards continue with adjusting to the
required minimum value.
19. To store the new parameter setting, press SW2
and SW3 buttons together for 3 seconds and
leave the setting level.
20. Adjustment of the mechanical pressure range
of modulating regulator: Be left in chimney
sweep mode and disconnect the power supply
modulating regulator.
21. Turn the large, outer adjusting screw B on the
regulator slowly in the "+" or "-" -direction while
continuously watching the pressure measuring
instrument. Stop turning as soon as the required
nozzle pressure for minimum load is reached
[e.g. 8,5mbar].
22. Re-connect power supply and turn the small,
inner adjusting screw C on the regulator slowly
in the "+" or "-" -direction while continuously
watching the pressure measuring instrument.
Stop turning as soon as the required nozzle
pressure for maximum load is reached
[e.g. 12mbar].
23. To check the settings, repeat the procedure
again.
24. Put the protection cap A on the valve after the
adjusting.
25. Close the test nipple after the measurement
and check that the test nipple is gas-tight.
26. Switch off the heater by deactivating chimney
sweep command.
46
Fig. 44: Gas cock with integrated TSD
Fig. 45: modulating regulator with adjustment screws