© 2017 United Technologies Corporation
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P/N 1036525-EN • REV F
ESL 500N Series Smoke Detector
Installation Sheet
Description
Note:
This document is intended for licensed electricians or
alarm installers. We cannot provide technical support to
unqualified persons. If you have any questions, contact us
using the “Contact information” on page 8.
The ESL 500N Series conventional two-wire and four-wire
photoelectric smoke detectors have intelligent software and
digitally processed sensing capabilities. This intelligence,
coupled with the ESL patented optical sensing chamber,
means the ESL 500N Series quickly and accurately detects
smoke. CleanMe compatible software, self-diagnostics, and
dust (drift) compensation are standard in every unit. The ESL
500N Series offers application flexibility with optional auxiliary
relays, rate-of-rise/fixed temperature heat sensors, isolated
heat sensors and/or 85 dBA temporal-three sounders.
Standard features
All models ship standard with the features described below.
Detector-base lock:
Discourages unauthorized removal of the
smoke detector by requiring a screwdriver to remove the
detector from the base.
Self-diagnostics:
Includes automatic sensitivity testing. Once
a day and immediately upon first power up, each 500N Series
detector performs a full diagnostic test that includes a dynamic
test of the sensing chamber and internal electronics. This
meets NFPA 72 field sensitivity testing requirements without
the need for external meters.
Drift compensation (dust compensation):
The detectors
automatically adjust sensitivity, up to a maximum of 1.0%/ft.,
as the detectors become dirty.
Additional features
Depending on the model, the smoke detector may also provide
the following features.
CleanMe:
Enables a CleanMe compatible control panel to
receive a warning signal, indicating that the optical chamber
needs to be replaced. This feature is available on the 500N
Series two-wire detectors only.
The 500N Series two-wire detectors enable the CleanMe
function by recognizing voltage polarity at installation. If the +
and
−
terminal connections are reversed, the CleanMe function
is enabled. New 500N Series detectors are compatible on the
same loop with previous 500 Series detectors if proper wiring
is observed. See “Wiring” on page 4.
Integral temporal-three sounder:
In the 500N models with
sounder, a piezoelectric horn produces an interrupted 85 dBA
tone when the detector alarms or when the polarity is reversed.
Sounder follows input voltage in reverse polarity.
In order for all sounders to activate when the panel alarms, the
panel must reverse the supply voltage polarity to the loop on
alarm. If the panel does not implement polarity reversal, an
ESL 405 Polarity Reversal Relay Module must be used. (Refer
to the installation sheet for the ESL 405 Polarity Reversal
Relay Module.)
Auxiliary and end-of-line relays:
Auxiliary relays are Form C
and operate at 1 A
at
30 VDC to allow for the addition of
auxiliary notification devices to the smoke loops. Products with
an “R” in the suffix signify the auxiliary relay feature.
An end-of-line relay operates as a power supervision relay and
is normally energized and will release with the loss of power.
Products with an “E” in the suffix signify the end-of-line feature.
Heat sensors:
Some models come with rate-of-rise or fixed
temperature heat sensors which allow the unit to detect
changes in temperature that may signal a fire event. Models
with an “XT” in the suffix have a heat sensor included.
Some models are available with an isolated heat sensor. If the
unit senses a temperature change it will alert the panel and
signal an alarm independent of smoke in the photoelectric
chamber. The heat alarm output is on the alarm relay and the
smoke detector output is on the auxiliary relay. Models with an
“H” in the suffix have an isolated heat sensor which is both rate
of-rise and fixed temperature.
