7
AIR TERMINALS AND FRESH AIR DAMPER (50XJ
PCB2) — The VAV Terminal Open (TRMOP), Ventilation
Output (VENTR), VAV Terminals Control (TRMCT), and
Heat Interlock Relay (HIR) terminals provide dry contacts to
command the VAV terminals open; a ventilation damper open;
VAV terminals to control to their cooling set points; and VAV
terminals to control to their heat set points, respectively.
REMOTE OCCUPANCY (ROCC) (TB2 50BV, TB6
50XJ) — The 50XJ,BV unit may be commanded by a remote
control system or a twist timer to become occupied and run
when a set of dry contacts close. In order for this to occur, wire
the contacts to ROCC and C.
SMOKE DETECTOR/FIRE ALARM SHUTDOWN (FSD)
(TB2 50BV, TB6 50XJ) — To allow a smoke detector to shut
the 50XJ,BV unit down, remove the jumper from FSD to C
and wire these terminals to a set of normally closed contacts on
the smoke detector.
ALARM (ALARM) AND WARNING (WARN) OUTPUTS
(TB2 50BV, TB6 50XJ) — Two dry contacts output a dis-
crete signal when the alarm and warning lights on the display
are lit. To pick up the alarm output signal, wire between the
ALARM and ALM-CM terminals. To pick up the warning
output signal, wire between the WARN and ALM-CM
terminals.
2
3
45
61
SW1
SEN
BRN (GND)
BLU (SPT)
RED(+)
WHT(GND)
BLK(-)
CCN COM
SENSOR WIRING
Fig. 3 — Space Temperature Sensor
Typical Wiring (33ZCT55SPT)
J6
6
7
RED
BLK
RED
RED
BLK
BLK
BLK
RED
BLK
RED
SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4
J6
6
7
RED
BLK
RED
BLK
SENSOR 2
SENSOR 1
RED
RED
BLK
SENSOR 3
SENSOR 4
BLK
BLK
RED
RED
RED
BLK
BLK
SENSOR 8
SENSOR 9
SENSOR 5
RED
BLK
SENSOR 6
SENSOR 7
BLK
RED
SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION
SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION
Fig. 4 — Space Temperature Averaging
LEGEND
Field Wiring
