14
Installation and Maintenance Instructions
Models 304X and 314X Explosion-Proof Amplified Speakers
4.
Connect the negative (
–
) power-source lead to the negative
terminal labeled
N –
.
5.
Connect the additional positive (
L+
) and negative (
N –
) terminal-
block leads to the next speaker or to a power supervision relay.
6.
Connect one pair of white leads from the connector card to the
audio output of the fire alarm panel.
7.
Connect the other pair of white leads to the connector card in the
next speaker or to a contact on the power supervision relay and
an end of line device.
NOTE:
Check with the authority having jurisdiction for the proper
application of the required EOL resistor and power supervision
relay (see Figure 6 on 16).
EXPLOSION HAZARD — Property damage, serious injury, or
death could occur if the housing is not closed properly. To
reduce possibility of explosion, the housing cover must be
kept tight while circuits are energized.
8.
Carefully reinstall the housing cover and tighten it until the cover
flange makes contact with the housing.
9.
To secure the cover, tighten the set screw on the cover. Verify that
the mounting bolts are securely tightened.
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