Edwards 438DEX and 439DEX Fire Alarm Bells Installation Sheet

and 439DEX Fire Alarm Bells Sheet Do not apply power to the bell until installation has completed and the cover has been secured on outlet box bell can be mounted to any solid surface install the bell Refer to Figure 1 on page 2 Remove the gong support remove the gong and set it aside Bring the bell wires the nipple and secure the nipple onto the bell careful not to twist or crimp the wires Feed the bell into the outlet box and secure the outlet box onto the again being careful of the wires Secure the 3 4 in conduit onto the outlet box Place the bell against mounting surface and mark hole positions the dimensions are shown in 2 Install fasteners with washers through mounting and secure bell to surface Replace the gong in its original orientation and secure Remove the cover from the conduit outlet box Feed the circuit field wires through the conduit and into out of the outlet box along with the four bell wires Wire run must be broken to provide electrical Connect the signaling circuit wires to the bell wires per the wiring diagram For 438DEX series AC bells Figure 3 For 439DEX series DC bells see Figure 4 wire connections using wire nuts Also refer to the installation instructions for wiring connections in the fire alarm control panel for additional wiring details Connect only two wires per wire nut at connection Do not twist wires together Replace the cover on outlet box Apply power to the fire alarm control panel Initiate an to activate the bell and verify that it sounds Then the panel to silence the bell and return to the mode This device will not operate without electrical As fires frequently cause power interruptions we you discuss further safeguards with your local fire specialist catalog series 438DEX and 439DEX fire alarm bells heavy duty diode polarized vibrating bells intended for in compatible fire alarm systems and other applications electrical supervision of signaling circuit field wiring 438DEX series of bells are AC powered and the 439DEX DC powered The bells are electro mechanical devices and solid state components These appliances must be in accordance with the applicable requirements in the editions of the NFPA codes and standards and the local having jurisdiction series of the bells are listed for installation in the following locations Class I Divisions 1 and 2 Groups B C D Class I Zones 1 and 2 Groups IIA and IIB Class II 1 and 2 Groups E F and G and Class III Zones 1 2 following items not supplied are required for installation the bell in National Pipe Taper NPT conduit to contain circuit wires One 3 4 in 14 NPT nipple One conduit outlet box suitable for use in the hazard fasteners up to 3 8 in diameter and washers suitable securing bell to mounting surface wire nuts 2011 UTC Fire Security All rights reserved 4 P 047550 0587 REV 6.0 ISS 04NOV11 2 Mounting hole dimensions the bell annually for accumulation of dirt and clean necessary To prevent ignition of hazardous atmospheres disconnect all power before opening the conduit outlet servicing or cleaning the bell Keep tightly closed when are energized perform an operational test on this product on a regular after installation Edwards suggests that this regularly testing be performed at least once a year or more as may be dictated by the local authority having 1 Wiring 3 Wiring the 438DEX AC bells DC supervisory polarity shown On alarm voltage switches 120 VAC 4 Wiring the 439DEX DC bells DC supervisory polarity shown On alarm polarity reverses 4 P 047550 0587 REV 6.0 ISS 04NOV11 number Series Series 1 Sound output number size in in in VAC to 24 VDC current A RMS A Avg rating at 10 level rating is determined in an anechoic chamber on an decibel scale 2 Mechanical specifications number in 178 mm x 5 in 127 mm in 279 mm x 5 1 4 in 133 in 229 mm x 5 1 8 in 130 mm 7 lb lb kg kg lb kg information A Division of UTC Fire Security Corporation Inc Town Center Parkway Bradenton FL USA 464 ANSI UL 1203 American information contact information see our Web site P 047550 0587 REV 6.0 ISS 04NOV11 4 4 P 047550 0587 REV 6.0 ISS 04NOV11