TEC247 Fire & Extinguishant Control Panel – INSTALLATION & OPERATION MANUAL
DOC NO. PRMAN-0003 TEC247 Rev 04.12 191209.docx - 4 - E. &O.E.
4. POWER SUPPLY
The internal power supply is a high efficiency switch-mode power supply with an input AC voltage range of
100-250 V AC. The power supply provides the following:
▪ 27.5 V DC to the fire control panel electronic circuits
▪ Battery charging and monitoring
▪ LED fault indication
▪ Two relay outputs, one for Common PSU Fault and the other for an AC Input Fault
FIGURE 2 PCB-PSU2A – POWER SUPPLY BOARD
NB: If an external power supply is used to power the panel, all warranty claims will be null and void.
NB: Care must be taken to earth the panel correctly. An earth lug is located inside the enclosure for this
purpose. Appropriate lugs should be used to terminate all cables.
NB: Terminal blocks should be opened counter-clockwise at least 5 turns before inserting a cable and
tightening the contact. Failure to do so could cause malfunction of the installation.
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