Edwards CTM Assembly instructions

© 2013 UTC Fire & Security. All rights reserved. 1 / 2 P/N 3101025 • REV 02 • REB 25JAN13
CTM City Tie Module Installation Sheet
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Description
The CTM City Tie Module provides a single municipal box
connection for activating a local energy type master box
connected to a public fire alarm reporting system.
Installation
Install the CTM in accordance with NFPA 70 National Electrical
Code.
WARNING: This device will not operate without electrical
power. As fires frequently cause power interruptions, we
suggest you discuss further safeguards with your fire
protection specialist.
The CTM is shipped from the factory as an assembled unit; it
contains no user-serviceable parts and should not be
disassembled.
For more information, refer to the technical reference manual
listed inside the control panel door.
To install the module:
1. Verify that all field wiring is free of opens, shorts, and
ground faults.
2. Make all wiring connections as shown in the wiring
diagram. See Figure 1.
4. Using the 4-24 × 1/2 in (13 mm) self-tapping screw
provided, mount the wall plate to the module.
5. Using the two 6-32 × 1/2 in (13 mm) machine screws
provided, mount the module to the electrical box.
Wiring
Wire the CTM to a dedicated notification appliance circuit
(NAC) as in Figure 1 on page 2. Do not install other notification
appliances on the same circuit.
Specifications
Voltage 24 VDC nom.
Current
Standby
Alarm
20 mA
300 mA, max.
Ground fault impedance 0 
Wire size 12 to 18 AWG (0.75 to 2.5 sq mm)
Mounting North American 2-1/2 in (64 mm) deep
1-gang box
Municipal box connection
Wire resistance:
Trip current:
26 
200 mA into a 14.5 coil
Operating environment
Temperature
Relative humidity
32 to 120°F (0 to 49°C)
0 to 93% noncondensing

2 / 2 P/N 3101025 • REV 02 • REB 25JAN13
Figure 1: CTM installation wiring diagram
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1234
+
–
Act iveNormal
Public fire alarm
reporting system
Local energy type
master box
+
–
+
–+
–
EOLR [ 3 ]
Act iveNormal
From dedicated notification
appliancecircuit [4]
Compatibleelectrical box
CTM
Wall plate
Sc r ew s
14.5 
trip coil
[1]
[2]
[1] Power-limited and supervised for opens, shorts, and ground faults
[2] Nonpower-limited and supervised for opens and ground faults
only. 26 , max. 4.4 A, max.
[3] Use end-of-line resistor value required by the notification
appliance circuit
[4] NAC output signal must be compatible with the input rating of the
local energy type master box.