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TCN-890x Electronic Room Thermostat (Continued)
Dimensions
(tcn-890x cat06.eps)
3.15 (80)
65
70
20
60
75
16
24
Setpoint
3.15
Dial
(80)
55
80
12
28
C
Temperature
F
Scale
TCN-890x Cover Dimensions, in. (mm)
tcn-890x cat07.eps)
2.37 (60.3)
UP
1 2 3
4
5
6
7 8 9
10
2.37
(60.3)
2.43 (61.7)
TCN-890x Base Dimensions, in. (mm)
tcn-890x cat08.eps)
3.07 (78)
1.26 (32)
4.65
(118)
TCN-890x Wallplate Dimensions, in. (mm)
Wiring Diagrams
24 VAC
0 to 10 V
Heating
Actuator
0 to 10 V
Cooling
Actuator
Do Not Connect
RA/DA Contact
Factory Installed Jumper
Unoccupied
Do Not Connect
Contact
Do Not Connect
Wiring the TCN-8901, 0 to 10 V
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond t hese specifications, consult the local Johnson
Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.
Control Sequence Diagrams
tcn-890x cat04.eps
1.29 (33)
100%
Output
0%
tcn-890x cat05.eps
On
11 12
2.40
(60.9)
Output
Off
Unoccupied
Unoccupied
3.28
(83.4)
tcn-890x cat02.eps
TCN-8901
1
24 VAC
2
24 VAC Common
3
RA Output
4
Common
DA Output
5
6
RA/DA Input
7
8
Common
Unoccupied Input
9
10
11
Common
12
Sensor
Internal Connection (Pins 4, 8, and 11)
Unoccupied Offset
Unoccupied Offset
Unoccupied Offset
RA
DB
PB
Setpoint
Occupied
Unoccupied
Unoccupied
RA Output (Heating)
TCN-8901 0 to 10 VDC Control Sequence
Unoccupied Offset
Unoccupied Offset
Unoccupied Offset
DB
RA
DIF
Setpoint
Occupied
Occupied
RA Output (Heating)
TCN-8906 On/Off Control Sequence
tcn-890x cat03.eps
On/Off
Heating
Actuator
On/Off
Cooling
Actuator
RA/DA Contact
Factory Installed Jumper
Unoccupied
Contact
Wiring the TCN-8906, On/Off
2/2
Controls Group 507 E. Michigan Street
P.O. Box 423, Milwaukee, WI 53202
Code No. LIT-1900160
Unoccupied Offset
Unoccupied Offset
DB
DA
PB
Occupied
Unoccupied
Unoccupied
Unoccupied
Unoccupied
DA Output (Cooling)
Unoccupied Offset
Unoccupied Offset
Unoccupied Offset
DB
DA
DIF
Occupied
Occupied
Unoccupied
Unoccupied
DA Output (Cooling)
TCN-8906
24 VAC
1
24 VAC
2
24 VAC Common
3
RA Output
4
24 VAC
DA Output
5
Do Not Connect
6
RA/DA Input
7
8
Common
9
Unoccupied Input
Do Not Connect
10
11
Common
Do Not Connect
12
Sensor
Internal Connection (Pins 1 and 4, 8 and 11)
© 08/02 Johnson Controls, Inc
Unoccupied Offset
Temperature
Temperature
Temperature
Temperature
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