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a. Kit shall provide connectors to permit gas and electrical c onnections to be brought to the unit through t he
basepan.
22. Fan/Filter Status Switch:
a. Provides status of indoor (evaporator) fan (ON/ OFF) or filter (CLEAN/DIRTY). Status shall be displayed
over communication bus when used with direct digital controls or with an indicator light at the the rmostat.
23. Outdoor Air Enthalpy Sensor:
a. The outdoor air enthalpy sensor shall be used to provide single enthalpy control. When used in conj unction
with a ret urn air e nthalpy sensor, the unit will provide differential enthalpy control. The sensor allows the
unit to determine if outside air is suitable for free cooling.
24. Return Air Enthalpy Sensor:
a. The return air ent halpy sensor shall be used in conjunction with an outdoor air enthalpy sensor to provide
differential enthalpy control.
25. Indoor Air Quality (CO2) Sensor:
a. Shall be able to provide demand ventilation indoor air quality (IAQ) control.
b. The IAQ sensor shall be available in duct mount, wall mount, or wall mount with LED display. The set
point shall have adjustment capability.
26. Hinged Panel Option:
a. Hinged panel option provides hinged access panels for the filter, compressor, evaporator fan, and control
box areas.
b. Filter hinged panels permit tool --less entry for changing filters.
c. Each hinged panel is permanently attached to the rooftop unit.
27. Smoke det ectors:
a. Shall be a Four--Wire Controller and Detector.
b. Shall be environmental compensated with differential sensing for reliable, stable, and drift --free sensitivity.
c. Shall use magnet--activated test/reset sensor switches.
d. Shall have tool--less connection terminal access.
e. Shall have a recessed momentary switch for testing and resetting the detector.
f. Controller shall include:
i. One set of normally open alarm initiation contacts for connection to an initiating device circuit on a fire
alarm control panel
ii. Two Form--C auxiliary alarm relays for interface with rooftop unit or other equipment
iii. One Form--C supervision (trouble) relay to c ontrol the operation of t he Trouble LED on a remote test/re-
set station
iv. Capable of direct connection to two individual detector modules
v. Can be wired to up to 14 other duct smoke detectors for multiple fan shutdown applications
28. Winter start kit
a. Shall conta in a bypass device around the low pressure switch.
b. Shall be required when mechanical cooling below an out door ambient of 40_F(4_C).
c. Shall not be required to operate an equipped economizer when below an outdoor ambient of 40_F(4_C).
29. Barometric relief
a. Shall include damper, seals, hard--ware, and hoods to relieve excess building pressure.
b. Damper shall gravity--close upon unit shutdown.
30. Time Guard
a. Shall preve nt compressor short cycl ing by providing a 5--minute delay (±2 minutes) before restarting a
compressor after shutdown for any reason.
b. One devic e shall be required per c ompressor.
Manufacturer reserves the ri ght to dis continue, or change at any time, specifications or designs without notice and without incurring obligations.
E2008 Bryant Heating & Co oli ng Systems D 7310 W. Mo rris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 01/08
Replaces: NEW
Catalog No. PDS558J---01
558J
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