Bryant 582J 04-06, Installation Instructions Manual

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38
Troubleshooting
Alarms
The economizer module provides alarm messages that display on
the 2-line LCD.
NOTE: Upon power up, the module waits 60 minutes before
checking for alarms. This allows time for all the configured devic-
es (e.g. sensors, actuator) to become operational. The exception is
the SAT sensor which will alarm immediately.
If one or more alarms are present and there has been no keypad ac-
tivity for at least 5 minutes, the Alarms menu displays and cycles
through the active alarms.
You can also navigate to the Alarms menu at any time.
Clearing Alarms
Once the alarm has been identified and the cause has been re-
moved (e.g. replaced faulty sensor) the alarm can be cleared from
the display. To clear an alarm, perform the following:
1. Navigate to the desired alarm.
2. Press the
(Enter) button. ERASE? displays.
3. Press the (Enter) button. ALARM ERASED displays.
4. Press the (Menu up/Exit) button to complete the
action and return to the previous menu.
NOTE: If the alarm still exists after clearing it, it is redisplayed
within 5 seconds.
Outdoor Air Enthalpy Control (P/N 33CSENTHSW)
The enthalpy control (33CSENTHSW) is available as a field-in-
stalled accessory to be used with the EconoMi$er ® 2 damper sys-
tem. The outdoor air enthalpy sensor is part of the enthalpy con-
trol. The separate field-installed accessory return air enthalpy sen-
sor (33CSENTSEN) is required for differential enthalpy control.
See Fig. 50.
Locate the enthalpy control in the economizer next to the actuator
motor. Locate two GRA leads in the factory harness and connect
the gray lead labeled “ESL” to the terminal labeled “LOW”. See
Fig. 50. Connect the enthalpy control power input terminals to
economizer actuator power leads RED (connect to 24V) and BLK
(connect to GND).
The outdoor enthalpy changeover setpoint is set at the enthalpy
controller.
Fig. 50 — Enthalpy Switch (33CSENTHSW) Connections
DIFFERENTIAL ENTHALPY CONTROL
Differential enthalpy control is provided by sensing and compar-
ing the outside air and return air enthalpy conditions. Install the
outdoor air enthalpy control as described above. Add and install a
return air enthalpy sensor.
RETURN AIR ENTHALPY SENSOR
Mount the return-air enthalpy sensor (33SENTSEN) in the return-
air section of the economizer. The return air sensor is wired to the
enthalpy controller (33CSENTHSW). See Fig. 51.
Fig. 51 — Outside and Return Air Enthalpy Sensor Wiring
Wiring the Return Air Enthalpy Sensor
1. Use a 2-conductor, 18 or 20 AWG, twisted pair cable to
connect the return air enthalpy sensor to the enthalpy
controller.
2. Connect the field-supplied RED wire to (+) spade connec-
tor on the return air enthalpy sensor and the (+) terminal
on the enthalpy controller. Connect the BLK wire to (–)
spade connector on the return air enthalpy sensor and the
(–) terminal on the enthalpy controller.
Smoke Detectors
Smoke detectors are available as factory-installed options on 582J
models. Smoke detectors may be specified for Supply Air only or
for Return Air without or with economizer, or in combination of
Supply Air and Return Air. Return Air smoke detectors are ar-
ranged for vertical return configurations only. All components
necessary for operation are factory-provided and mounted. The
unit is factory-configured for immediate smoke detector shutdown
operation; additional wiring or modifications to unit terminal
board may be necessary to complete the unit and smoke detector
configuration to meet project requirements.
Units equipped with factory-optional Return Air smoke detectors
require a relocation of the sensor module at unit installation. See
Fig. 52 for the as-shipped location.
Fig. 52 — Return Air Smoke Detector, Shipping Position
7 CTB ECON
(P
’ LINK: to J4-2) or
(RTU Open: to J2-6)
LOW
GND
24V
Enth a lpy
S witch
GRA
BLK
RED
FACTORY WIRING HARNE SS
PL6-1 (24-V)
PL6-4 (COM)
GRA
BLK
RED
– 4-20
MAIN
+ VDC
OUT
– 4-20 MAIN
OUT
+ 24- 3 6
VDC IN
LOW
GND
24V
7
PL6-1 (24-V)
PL6-4 (COM)
OUT S IDE AIR
ENTHALPY S WITCH
RETURN AIR
ENTHALPY
S EN S OR
CTB ECON
(P
’ LINK: to J4-2) or
(RTU Open: to J2-6)
RETURN AIR
S MOKE DETECTOR
(A S S HIPPED)