Technical Manual: EVC-DP 000025 (Changes are subject to DCRN)
4
Ref No: NISM/EVC-DP/03 Date: 19.02.19 Issue: 3
• evolution • EVC-DP • photoelectric smoke detector instuction manual
Section 3 - DETECTOR MODELS
The EVC-DP photoelectric smoke detector is supplied, as standard,
with four terminals.
The EVC-DP has the facility to activate a remote LED
indicator or auxiliary function, as standard.
The terminals on the EVC-DP detector head are configured
as follows:-
Terminal 1 = zone negative in
Terminal 3 = zone positive in/out
Terminal 6 = zone negative out
Terminal 5 = 2 mA @ 24V d.c. switched output
Section 4 - BASE MODELS
A variety of bases are available for use with the EVC-DP detector.
It is important to use the correct base for each application.
The standard range available is as follows:-
i) UB-4 base: having 4 terminals, for standard use with EVC-DP
detector including the auxiliary output function.
ii) UB-4SD base: This is identical to the standard UB-4 base, but also
includes a schottky diode for head removal fault monitoring.
The schottky diode is used in some fire systems to ensure power is
maintained, in the event of an unauthorised detector head removal,
to other detectors further on the zone.
iii) STB-4SE base: Similar to UB-4 base, except deeper.
Section 5 - INSTALLATION
In normal use, the EVC-DP detector will be installed at ceiling level.
Pass the field wiring through the cable hole in the centre and from the
rear of the base. Offer up and affix the base to the ceiling or conduit
fitting with screws via the base mounting holes. Connect the field wiring
to the base terminals, as detailed on page 6 making sure the wiring
does not obstruct fitting of the detector head. Fit the detector head
by inserting it into the base and turning clockwise until the notch in the
detector rim aligns with base locking screw. The OMNIVIEW™ 360º
indicator permits visibility from any angle.
