Chapter 2. Installation/System Checkout
2-2
• All Aux Relay loads must be powered from the AUX
power circuit or from a regulated, 24 VDC, power-lim-
ited power supply that is UL-listed for fire protective
signaling service.
Guidelines for Locating Backbox
Always refer to engineering drawings/site installation plans
before beginning installation. Choose a site for each cabinet
that is:
• Located near a dedicated AC individual branch circuit
with Earth ground (to maintain a consistent supply volt-
age).
• Mount the cabinet to the wall so that the top of the
enclosure is no more than six feet above the floor.
• Well-ventilated, clean, and dust free.
• Away from sources of heat, including direct sunlight.
• Away from sources of vibration or physical shock.
• Away from sources of Radio Frequency Interference
(RFI), such as a radio transceiver base station or hand
held unit.
• Isolated from sources of strong electromagnetic fields,
such as air conditioners, large fans, and electric motors.
Surface Mounting
Refer to the figure below for hole dimensions.
Semi-Flush Mounting
Semi-flush mounting involves recessing the cabinet into a
wall and attaching it directly to the wall's studs. At a mini-
mum, 1.5 inches of the cabinet must protrude from the wall
to allow for clearance of the panel door.
Figure 2-3 Semi-Flush Mounting
General Wiring Guidelines
All wiring to the 4008 and its peripherals must be performed
in accordance with NFPA 70, NFPA 72, all local codes, and
per the technical requirements listed below.
Testing Procedure
Before connecting any wires to the 4008 system, including
option modules, wires must be tested as follows:
1. Using a voltmeter (VOM) to verify no stray voltages are
applied to the field wiring. Test for AC and DC voltages
across each pair of wires and from each wire to earth.
2. Use a VOM to verify that all wiring tests free of
grounds. Each conductor should test “open” against
earth (chassis).
Figure 2-2 Surface Mounting Hole Dimensions
1.000 11.250
13.500
13.250
15.632
16.000
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