MPT
700
25
3.7 Mode of Operation 7- heating with variable pulse width and
spacing and separate air and gas valve control
•
In this mode of operation, no fixed pulse widths are defined.
•
The pulse width or the pulse spacing changes as a function of the setting.
•
Max. pulse frequency = 1 / (min. on time + min. off time)
•
The maximum pulse frequency is reached at a setting corresponding to the
value entered for parameter 28 and 29 ('XX' in diagram).
•
Even before the unit changes from pulse operation to a continuous pulse, the
minimum off time never falls below the set parameter value.
•
Outputs 1-3-5-7 control the air valves.
•
Outputs 2-4-6-8 control the corresponding gas valves.
•
The ignition timing for outputs 1-3-5-7 must be set.
•
Outputs 2-4-6-8 are activated with the set delay following outputs 1-3-5-7.
•
Any ignition timing entered for outputs 2-4-6-8 is not effective.
delay
≤
min. on time + min. off time
ZZP: ignition timing
