WIRING
INSTALLATION Distribute the manual station boxes throughout the protected area so that they
are unobstructed, readily accessible, and located in the normal exit path. Place the
manual station according to the regulations of the authorities having jurisdiction.
Surface Mounting Mount the backplate to a Model MC-5 Backbox as shown in Figure 4.
Flush Mounting Mount the backplate to a user supplied single gang switchbox.
Do not overtighten the screws. Overtightening may distort the backplate.
Figure 3
Wiring Information
TO NEXT ADDRESSABLE DEVICE
LINE 1
LINE 1
LINE 2
LINE 2
EARTH GROUND
1
2
3
FROM INITIATING CONTROL PANEL
OR PREVIOUS ADDRESSABLE DEVICE
NOTES:
1. Recommended wire sizes:
18 AWG minimum, 14 AWG maximum
2. Wire larger than 14 AWG can damage the connector.
3. When using shielded cable without metal raceway or with nonmetallic
raceway, the shields should be terminated at the device ground
terminal. If the device box is already grounded by another means, such as
being mounted to a grounded structure, the wire shields should be
continuous and must be grounded solely at the point of origin; for
example, at the control panel.
4. When using shielded cable with metal raceway, the wiring shields shall
be continuous and grounded solely at the point of origin.The device
ground terminal shall be connected to the grounded device box.
5. When using metal raceway without shielded cable, connect the device
ground terminal to the grounded device box.
6. Metal raceway should be thoroughly grounded throughout the system.
7. CX-2 Addressable Device Loop ratings:
Voltage: 31V max.
18V min. (pulsing)
Current maximum: 1mA
8. The SMS-S is a polarity insensitive device. Line 1 and Line 2 can be either
line of the FDLC or loop.
Siemens Building Technologies
Fire Safety
P/N 315-033200C-5
3½ INCH DEEP
SWITCH BOX
(USER SUPPLIED)
MODEL
MC-5
BACKPLATE
BACKPLATE
SURFACE
MOUNTING
ENCLOSURE
FLUSH
MOUNTING
ENCLOSURE
HOUSING HINGED
TO BACKPLATE
HOUSING
LOCKING
SCREW
5½ in.
3 in.
4 in.
2¾ in.
3½ in.
NAMEPLATE
Figure 4
Mounting The SMS
Siemens Building Technologies, Ltd.
2185 Derry Road West
Mississauga, Ontario L5N 7A6 Canada
