Fire-Lite MS-2 User Manual page 21

Input Circuits
Supervisory Switch
(tamper)
Supervisory Switch
(tamper)
In-Line-Resistor
1.2 KΩ, ½ watt resistor P/N: 75579
MS-2/MS-4 PN 51512:B 08/28/02
Combination Waterflow/Supervisory Zone
A combination Waterflow/Supervisory circuit allows an FACP to distinguish between
an Alarm switch (waterflow device) and a Supervisory switch (tamper) installed on the
same circuit. The following figure illustrates the wiring of Zone 2 as a Style B (Class
B) Waterflow/Supervisory circuit. Note that only Zone 1 on the MS-2 and Zone 2 on
the MS-4 can be configured in this manner.
Class B Initiating Device Circuits (supervised and power-limited)
4.7 K , ½ watt resistor P/N:71252
Ω
Alarm Switch
(waterflow)
B+ B-
ZONE 1 ZONE 2
Figure 2.5 Style B Combination Circuit on Zone 2 of the MS-4
Requirements for the Combination Waterflow/Supervisory circuit are as follows:
✓ The Waterflow Alarm Switch(es) must connect to the FACP Initiating Device
Circuit before the In-Line Resistor as shown in Figure 2.5
✓ The Waterflow Supervisory Switch(es) must connect to the FACP Initiating
Device Circuit after the In-Line Resistor as shown in Figure 2.5
✓ Program the FACP Initiating Device Circuit #1 on the MS-2 or Circuit #2 on
the MS-4 as a Combination circuit by placing SW1 DIP switch 8 to the ON
position as described in "SW1 DIP Switch Settings" on page 34
✓ Waterflow Alarm Switch activation causes the panel to latch into alarm until
the alarm condition is cleared and the FACP is reset
✓ Supervisory Switch activation causes the panel to track the supervisory
condition, that is, the panel will clear when the supervisory condition is
cleared (if FACP is programmed for Autoresettable Supervisory)
B+ B- B+ B- B+
ZONE 3 ZONE 4
Installation
Dummy load all unused
circuits - 4.7 K , ½ watt
Ω
resistor (P/N: 71245)
Note: Zones 3 & 4
on MS-4 only
B-
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