Bryant 580J*08--14D Service And Maintenance Instructions page 40

SEN
SEN
Fig. 46 - - RTU- - MP T- - 55 Sensor Connections
Connect T- - 56
See Fig. 47 for T- - 56 internal connections. Install a jumper
between SEN and SET terminals as illustrated. Connect
T- - 56 terminals to RTU- - MP J20- - 1, J20- - 2 and J20- - 3 per
Fig. 48.
1 2 6
3 4 5
WHT(GND)
SEN SET
SW1
BRN (GND)
BLU (SPT)
Cool Warm
Fig. 47 - - T- - 56 Internal Connections
SEN
SEN
Jumper
SET
SET
Fig. 48 - - RTU- - MP T- - 56 Sensor Connections
Connect T- - 59
The T- - 59 space sensor requires a separate, isolated power
supply of 24 VAC. See Fig. 49 for internal connections at
the T- - 59. Connect the SEN terminal (BLU) to RTU- - MP
J20- - 1. Connect the COM terminal (BRN) to J20- - 2.
Connect the SET terminal (STO or BLK) to J20- - 3.
J20-1
J20-2
C08460
RED(+)
CCN COM
BLK(-)
BLK
(T56)
SENSOR WIRING
JUMPER
TERMINALS
AS SHOWN
C08202
J20-1
J20-2
J20-3
C08461
BRN (COM)
BLK (STO)
BLU (SPT)
OR SET SEN
OPB COM- PWR+
NOTE: Must use a separate isolated transformer.
Fig. 49 - - Space Temperature Sensor Typical Wiring
(33ZCT59SPT)
Economizer Controls
Outdoor Air Enthalpy Control (PNO HH57AC077)
The enthalpy control (HH57AC077) is available as a
field- - installed accessory to be used with the EconoMi$er2
damper system. The outdoor air enthalpy sensor is part of
the enthalpy control. (The separate field- - installed
accessory return air enthalpy sensor (HH57AC078) is
required for differential enthalpy control.)
Locate the enthalpy control in the economizer hood.
Locate two GRA leads in the factory harness and connect
these leads to enthalpy control sensors 2 and 3. (See Fig.
50.) Connect the enthalpy control power input terminals to
economizer actuator power leads RED (connect to TR)
and BLK (connect to TR1).
Enthalpy
Switch
2
GRA
3
GRA
Fig. 50 - - Enthalpy Switch (HH57AC077) Connections
The outdoor enthalpy changeover setpoint is set at the
enthalpy controller.
40
SENSOR
WIRING
POWER
WIRING
24 VAC
C07132
LCTB
ECON
6
7
Factory Wiring Harness
C08218