Flame Relay PFF 704
- For flame detection
- For multi-burner control
- Flame monitoring with flame rod or UV detector
- Four independent flame amplifiers
- Single-electrode operation possible
- FM approved
The PFF 704 Flame Relay is designed to detect and signal an existing gas flame using flame rod or UV detector. For use with multi-burner control on burner control units PFU 760 or where automatic monitoring is not required.
The PFF 704 has four independent flame amplifiers. When a flame is present the amplifier energizes a relay. The contacts of this relay can be used for control functions.
|FAQ: Kromschröder Product Labels and Type Codes (Blog Post)|
|Flame Relay PFF 704 (for PF-19 Burner Control System) Brochure|
|Flame Relay PFF 704 (for PF-19 Burner Control System) Operating Instructions|
Click on images for close-up view.
|Power consumption:||10 VA|
|Ionization voltage:||230 V AC|
|Max. length of flame signal cable:||300 ft (100m)|
|Cut-off sensitivity of flame amplifier:||1 μA - 10 μA (set at factory at 1 μA) Fine-wire fuse 2.8 A, fast blowing, acc. to UL.|
|Weight:||approx. 1.1 lbs (0.51 kg).|
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