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used as a temperature reference to compare the sensing thermistor against.
At a given temperature differential between the two thermistors, the comparator will switch and increase the gain of the
amplifier, thereby increasing the sensitivity of the smoke sensor.
Fins located on the top of the labyrinth are designed to increase air turbulence and the efficiency of the sensing thermistor.
WIRING
The detector circuits requires a positive and negative supply and these are wired to terminals L1 and L on the base (Polarity
insensitive). Base terminal L2 is connected to base terminal L1 when the detector is fitted to provide continuity monitoring
through the detector. Base terminals L2 and L provide outputs to the next detector or EOL device.
In case of alarm the detector comunicate the state to control device by sinking from the supply leads an extra current accord-
ing to the figure 3, for restoring from an alarm condition the power has to be removed for 2-5 seconds.
A drive is provided for a remote indicator connected between supply + and terminal R, therefore at a detector where remote
indicator is connected, the polarity of the supply must be known.
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
0
2
4
6
8
10
12
14
Detector voltage (V)
Fig. 3 Alarm load.
INSTALLATION
The 601PH is designed to become enanched by detecting a rapid rise (>10°C) in air moving horizontally across the ceiling.
Siting sensor in positions where air is being blown through the detector should therefore be particulary avoided, eg. close to
ceiling ducts or ceiling mounted industrial heaters or areas of forced ventilations.
MAINTENANCE
The length of time between service for each detector will depend upon the environment into which they are installed. It is
recommended to Inspect, test and clean the detector at least annually.
The detector must be removed for service replacement typically each 5 years (up to 10 years subject to environment).
Recycling information
Customers are recommended to dispose of their used equipments (panels, detec-
tors, sirens, and other devices) in an environmentally sound manner. Potential meth-
ods include reuse of parts or whole products and recycling of products, components,
and/or materials.
The Manufacturer reserves the right to change the technical specifications of this product without prior notice.
L
R
L.R.
16
18
20
22
24
26
28
30
32
L1
L1
L
L2
L2
R
34
Fig. 4 Fit the detector unit onto the base (as per figure) then twist
clockwise.
Waste Electrical and Electronic Equipment (WEEE) Directive
In the European Union, this label indicates that this product should NOT be dis-
posed of with household waste. It should be deposited at an appropriate facility
to enable recovery and recycling.
L1
L
L2
R
E.O.L.
Fig. 2 Connection diagram.
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