Guidelines For Locating Backbox; Surface Mounting; Semi-Flush Mounting; General Wiring Guidelines - Simplex 4006-9121 Technical Manual

Chapter 2. Installation and System Checkout
• 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. The system is designed to
operate in a typical commercial environment. Choose a site
for each backbox that is:
• Well-ventilated, clean, and dust-free.
• Located near a dedicated AC individual branch circuit
with Earth ground (to maintain a consistent supply volt-
age).
• 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 large electric
motors.
Be sure to mount the backbox to the wall so that the top of
the enclosure is no more than six feet above the floor.

Surface Mounting

Refer to the figure below for hole dimensions.
1.000
13.500
Figure 2-2
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11.250
13.250
15.632
Surface Mounting Hole Dimensions

Semi-Flush Mounting

Semi-flush mounting involves recessing the backbox into a
wall and attaching it directly to the wall's studs. At a mini-
mum, 1.5 inches of the backbox must protrude from the wall
to allow for clearance of the panel door.
Figure 2-3

General Wiring Guidelines

All wiring to the 4006 and its peripherals must be performed
in accordance with NFPA 70, NFPA 72, all local codes, and
per the technical requirements listed in each section below.
Before connecting any wires to the system, including option
modules, wires must be tested as follows:
1. Use 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
16.000
grounds. Each conductor should test "open" against
earth (chassis).
2-2
1.5"
Semi-Flush Mounting