Guide Specifications - Bryant Legacy Line Series Manual

GUIDE SPECIFICATIONS

Gas Heat/Electric Cooling Packaged Rooftop
HVAC Guide Specifications
Size Range: 3 to 5 Nominal Tons
Bryant Model Number: 582J 04-06
Part 1 — (23 06 80) Schedules for Decentralized HVAC
Equipment
1.01 (23 06 80.13) Decentralized Unitary HVAC Equipment
Schedule
A. (23 06 80.13.A) Rooftop unit schedule
1. Schedule is per the project specification requirements.
Part 2 — (23 07 16) HVAC Equipment Insulation
2.01 (23 07 16.13) Decentralized, Rooftop Units:
A. (23 07 16.13.A) Evaporator fan compartment:
1. Interior cabinet surfaces shall be insulated with a
minimum 1 / -in. thick, minimum 1
2
flexible fiberglass insulation bonded with a pheno-
lic binder, neoprene coated on the air side.
2. Insulation and adhesive shall meet NFPA 90A
requirements for flame spread and smoke generation.
B. (23 07 16.13.B) Gas heat compartment:
1. Aluminum foil-faced fiberglass insulation shall be
used.
2. Insulation and adhesive shall meet NFPA 90A
requirements for flame spread and smoke generation.
Part 3 — (23 09 13) Instrumentation and Control Devices for
HVAC
3.01 (23 09 13.23) Sensors and Transmitters
A. (23 09 13.23.A) Thermostats
1. Thermostat must
a. energize both "W" and "G" when calling for
heat.
b. have capability to energize stage 1 of cooling,
and 2 different stages of heating.
c. include capability for occupancy scheduling.
Part 4 — (23 09 23) Direct-digital control system for HVAC
4.01 (23 09 23.13) Decentralized, Rooftop Units:
A. (23 09 23.13.B) RTU Open - Open protocol, direct digi-
tal controller:
1. Shall be ASHRAE 62 compliant.
2. Shall accept 18-30 vac, 50-60Hz, and consumer
15VA or less power.
3. Shall have an operating temperature range from
–40°F (–40°C) to 130°F (54°C), 10% to 90% RH
(non-condensing).
4. Shall include built-in protocol for BACnet
(MS/TP and PTP modes), Modbus
ASCII), Johnson N2 and LonWorks
Echelon processor required for all Lon applications
shall be contained in separate communication
board.
1. BACnet is a registered trademark of ASHRAE (American Society of
Heating, Refrigerating, and Air-Conditioning Engineers).
2. Modbus is a registered trademark of Schneider Electric.
3. LonWorks is a registered trademark of Echelon Corporation.
1 / lb density,
2
Part 5 — (23 09 33) Electric and Electronic Control System
for HVAC
5.01 (23 09 33.13) Decentralized, Rooftop Units:
A. (23 09 33.13.A) General:
1
(RTU and
2
3 . LonWorks
5. Shall allow access of up to 62 network variables
(SNVT). Shall be compatible with all open
controllers.
6. Baud rate controller shall be selectable using a
dipswitch.
7. Shall have an LED display independently showing
the status of serial communication, running, errors,
power, all digital outputs, and all analog inputs.
8. Shall accept the following inputs: space tempera-
ture, setpoint adjustment, outdoor air temperature,
indoor air quality, outdoor air quality, compressor
lock-out, fire shutdown, enthalpy switch, and fan
status/filter status/humidity/ remote occupancy.
9. Shall provide the following outputs: economizer,
variable frequency drive, fan, cooling stage 1, cool-
ing stage 2, heat stage 1, heat stage 2, exhaust
reversing valve/high fan speed.
10. Shall have built-in surge protection circuitry
through solid state polyswitches. Polyswitches
shall be used on incoming power and network con-
nections. Polyswitches will return to normal when
the "trip" condition clears.
11. Shall have a battery back-up capable of a minimum
of 10,000 hours of data and time clock retention
during power outages.
12. Shall have built-in support for Bryant technician
tool.
13. Shall include an RS-485 protocol communication
port, an access port for connection of either a com-
puter or a Bryant technician tool, an RS-485 port
for network communication to intelligent space
sensors and displays, and a port to connect an
optional LonWorks communications card.
14. Software upgrades will be accomplished by either
local or remote download. No software upgrades
through chip replacements are allowed.
1. Shall be complete with self-contained low-voltage
control circuit protected by a resettable circuit
breaker on the 24-v transformer side. Transformer
shall have 75 va capability.
2. Shall utilize color-coded wiring.
3. Shall include a central control terminal board to
conveniently and safely provide connection points
for vital control functions such as: smoke detectors,
phase monitor, gas controller, economizer, thermo-
stat, DDC control options, and low and high pres-
sure switches.
4. The heat exchanger shall be controlled by an inte-
grated gas controller (IGC) microprocessor. See
heat exchanger section of this specification.
5. Unit shall include a minimum of one 8-pin screw
terminal connection board for connection of con-
trol wiring.
47