PFU 760LTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650377
Safety time on start-up: 5 s
PFU 760LTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650378
For directly ignited burners, with multi-flame control
Safety time on start-up: 3 s
PFU 760LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650135
Safety time on start-up: 5 s
PFU 760LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650136
For pilot and main burners of unlimited capacity
1st safety time on start-up: 5 s, 2nd safety time on start-up: 3 s
PFU 780LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650133
1st safety time on start-up: 10 s, 2nd safety time on start-up: 3 s
PFU 780LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650134
IFW 15 Brochure IFW 15
PFU Technical
Information PFU 7
6 Electric flame monitoring and control units
2-86
 
Designation Order no.
For pilot and main burners of unlimited capacity, with
digital input for high temperature operation
1st safety time on start-up: 5 s, 2nd safety time on start-up: 3 s
PFU 780LTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650379
1st safety time on start-up: 10 s, 2nd safety time on start-up: 3 s
PFU 780LTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88650380
Versions
PFU..N, mains voltage 110–120 V AC, 50/60 Hz . . . . . . . . . . . . . . . no surcharge
PFU..U configured and prepared for
continuous operation using UVD 1 . . . . . . . . . . . . . . . . . . . . . . . . . no surcharge
PFU without air valve control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . reduction
PFU 760/780 as replacement for PFS/PFD/PFU
Replacement for PFS/PFD
Pre-set at the factory for adjustment to the product which is to be replaced.
Please quote the order number, mains voltage, the settings of switches S1–S5 and the
position of potentiometer P1 when ordering.
Replacement for PFU
Pre-set at the factory for adjustment to the product which is to be replaced.
Please quote the order number and device parameters when ordering.
A separate opto-adapter and the BCSoft PC software are required to configure the PFU
760/780. The mains voltage is not adjustable.
Old New Application
PFS/PFD 778..S PFU 760..K1 Direct ignition, no air valve control
PFS/PFD 778..M PFU 760..K1 Direct ignition, programmable multi-flame control
PFS/PFD 778..L PFU 760..L..K1 Direct ignition, air valve control
PFS/PFD 778..D PFU 760..L..K1 Direct ignition, air valve control, programmable multiflame control
PFU 778 PFU 760..L..K2 Direct ignition, air valve control
PFU 798 PFU 780..L..K2 Pilot/main burner, air valve control
Module subrack BGT S-9U/1 for PFU 760, PFU 780
consisting of:
module subrack, printed-circuit board with rear terminal strip, function-tested, standard
documentation, guide rails, without partial front plates, screw terminals at the rear.
Slots 1 – 9 for PFU 760 or PFU 780, slot 10 for PFP 700
Designation Order no.
BGT S-9U/1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84402281
Other versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on request
Flame detector PFF