Fire-Lite MS-4E Fire Alarm Control Panel - Manual (Page 21)

MS-2 & MS-4 Series Manual — P/N 51512:G2 10/18/2011 21
Input Circuits Installation
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.
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 35
 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)
Class B Initiating Device Circuits (supervised and power-limited)
4.7 K , ½ watt resistor P/N:71252
In-Line-Resistor
1.2 K , ½ watt resistor P/N: 75579
Alarm Switch
(waterflow)
Dummy load all unused
circuits - 4.7 K
, ½ watt
resistor (P/N: 71245)
Figure 2.5 Style B Combination Circuit on Zone 2 of the MS-4
Supervisory Switch
(tamper)
Supervisory Switch
(tamper)
Note: Zones 3 & 4 on
MS-4 only
ms-4
zon
1.
wmf