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5168274-BIM-I-1121
THERMOSTAT
TERMINALS
W1
W2
1
Y1
Y2
G
R
3
C
RC
4
OCC
5
X
TERMINALS ON A
LIMITED NUMBER
OF THERMOSTATS
Second stage
1
Jumper is required if there is no Smoke Detector circuit.
2
Jumper is required for any co
3
OCC is an output from the thermostat to indicate the Occupied
4
X is an input to the thermostat to display Error Status condi ons.
5
Figure 15: Typical Field Wiring 24 Volt Thermostat
208/230-3-60 unit control transformers are factory wired
for 230v power supply. Change tap on transformer for
208-3-60 operation. See unit wiring diagram.
16
ot required on single stage he
g units.
of R, RC, or RH.
R~Occ Jumper:
CONTROL
TERMINAL
Smart Equipment Control boards come from the
BLOCK
factory with a jumper wire between R and OCC
terminals on the thermostat terminal strip. Failure
W1
to remove this jumper will place the unit into the
Occupied mode no matter what the occupancy
W2
demand is from the thermostat or EMS system.
Y1
To allow Thermostat or EMS control of the
Occupied mode for the unit, this jumper must be
G
removed during commissioning.
Y2
OCC
X
R
SD-24
C
C
24V
SD-24
Jumper Located on Harness
(If No Smoke Detector)
SD-R
R
on.
Smoke
Detector
24 VAC
Class 2
2
(If Smoke Detector Is Used)
24V Output
Johnson Controls Ducted Systems
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