Field Control Wiring; Thermostat; Unit Without Thru- - Base Connection Kit; Heat Anticipator Settings - Bryant 580J Series Installation Instructions Manual

Field Control Wiring —
The 580J unit requires an external temperature control
device. This device can be a thermostat (field- - supplied) or
the RTU Open for Building Management Systems (RTU
Open is available as a factory- - installed option only).
Thermostat —
Install a Bryant- - approved accessory 2- - stage thermostat
according to installation instructions included with the
accessory. Locate the thermostat accessory on a solid wall
in the conditioned space to sense average temperature in
accordance with the thermostat installation instructions.
If the thermostat contains a logic circuit requiring 24- - v
power, use a thermostat cable or equivalent single leads of
different colors with minimum of seven leads. If the
thermostat does not require a 24- - v source (no "C"
connection required), use a thermostat cable or equivalent
with minimum of six leads. Check the thermostat
installation instructions for additional features which
might require additional conductors in the cable.
For wire runs up to 50 ft. (15 m), use no. 18 AWG
(American Wire Gage) insulated wire (35_C minimum).
For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated
wire (35_C minimum). For over 75 ft. (23 m), use no. 14
AWG insulated wire (35_C minimum). All wire sizes
larger than no. 18 AWG cannot be directly connected to
the thermostat and will require a junction box and splice
at the thermostat.
Unit without Thru- - Base Connection Kit —
Correctly rated low voltage wire can be routed through the
rubber grommet located on the corner post adjacent to the
control box access panel. Route wire through the grommet
and then route the wire behind the corner post utilizing the
factory provided wire ties secured to the control box. This
will insure separation of the field low voltage wire and the
high voltage circuit. Route the low voltage wire to the
central terminal board. See Fig. 31.
NOTE: If utilizing the through the base connections,
route the low voltage wire through the wire ties to the
central terminal board.
Typical

Thermostat

Corrections
C
See
G
Caution
W2
W1
O/B/Y2
(see Note)
Y1
R
Note: Typical multi-function marking. Follow manufacturer's configuration
instructions to select Y2.
Field Wiring
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may cause a short circuit.
Carefully check the connection of control coductor
for indoor fan control at terminal G. Connecting the
indoor fan lead to terminal C will cause a short circuit
condition which can cause component damage inside
the unit or at thermostat.
Fig. 31 - - Typical Low- - Voltage Control Connections
Heat Anticipator Settings —
Set heat anticipator settings at 0.14 amp for the first stage
and 0.14 amp for second- - stage heating, when available.
Transformer Connection for 208- - v Power Supply —
All units except 208/230-v units are factory wired for the
voltage shown on the nameplate. If the 208/230-v unit is
to be connected to a 208-v power supply, the control
transformer must be rewired by moving the black wire
1
with the / -in. female spade connector from the 230- - v
4
connection and moving it to the 208-v
terminal on the primary side of the transformer. Refer to
unit label diagram for additional information.
25
Central
Terminal
Board
X X
C C
G G
W2 W2
W1 W1
Y2 Y2
Y1 Y1
R
R
T–STAT
C10731
1
/ -in. male
4