Johnson Controls TCN-890x Catalog Page

Controls Group 507 E. Michigan Street

P.O. Box 423, Milwaukee, WI 53202 Code No. LIT-1900160

tcn890xs 1900160 9thcc:na - pending Rev:

TCN-890x

Electronic Room Thermostat

04/15/02 logo:

left ft: right ft:

standard Sect# = 0

seQ# = 8

tcb-890x cat01.tif

• thermostat includes wallbox and surface mounting plates and all installation hardware to mount directly to drywall or a standard U.S. wallbox

• models include an adjustable deadband:

- TCN-8901 has 0 to 10 VDC Reverse

Action (RA) and Direct Action (DA) outputs that feature separate proportional band adjustments

- TCN-8906 has two On/Off RA and DA

triac outputs that feature separate differential adjustments

Applications

The TCN-8900 Series features separate RA/DA outputs for automatic changeover of heating and cooling applications.

To Order

Specify the code number in the following selection chart.

Description

The TCN-8900 Series is a family of analog electronic controllers designed to control heating and/or cooling valves or dampers. The TCN-8901 has two 0 to 10 VDC proportional outputs, one for heating and one for cooling. The TCN-8906 has two On/Off

triac outputs, one for heating and one for cooling, capable of switching 0.5 A at 24 VAC.

The dual-scale setpoint dial enables the room occupant to adjust the thermostat setpoint within the range of 54 to 82°F (12 to 28°C). Johnson Controls offers an optional Dial Stop Screw Kit for applications where fixing or limiting adjustment to the temperature range is appropriate.

Features

• small, compact package provides similar look and feel to the Metastat sensors

• local setpoint provides easy wiring and installation

• globally scaled unit includes setpoint scale in both Fahrenheit and Celsius ranges 54 to 82°F (12 to 28°C)

• universal quick-mount design saves time and simplifies installation

Specifications

TCN-890x Series Electronic Room Thermostat

Power Requirements 24 VAC ±15% at 50/60 Hz, Class 2 Power Consumption 1.5 VA with No Load

Inputs

Adjustments

Output

Field Connectio ns Screw Terminals for 24 to 14 AWG Wire Mounting

Housing Protection NEMA 1, IP30 (IEC 60529)

Ambient Conditions

Dimensions (H x W x D) 3.15 x 3.15 x 1.30 in. (80 x 80 x 33 mm)

Agency Listings

Unoccupied Input

Set Point 54 to 82°F (12 to 28°C)

Dead Band 0 to 4F° (0 to 2C°)

Differential

Proportional

TCN-8901

TCN-8906

Operating

Storage

Remove Factory-Installed Jumpe r on Screw Terminal Block; Fixed 9F° (5C°) Nominal Offset

RA/DA Remote Cont act

(Model TCN-8906 Only) 0.4 to 4F° (0.2 to 2C°) ; Independent Adjustments for RA and DA Outputs

(Model TCN-8901 Only) 2 to 7F° (1 to 4C°); Independent Adjustments for RA and DA

Band

Outputs Analog, 0 to 10 VDC, 10 mA Maximum;

Output Normal State is Off On/Off, Triac 24 VAC, 0.5 A Maximum;

Output Normal State is Off

Standard Bases for Surface or U.S. Wallbox Mounting, Including Hardware

White Plastic Cover with Dark Gray Plastic Mounting Base

32 to 122°F (0 to 50°C) 10 to 95% RH (Noncondensing)

-4 to 158°F (-20 to 70°C) 10 to 90% RH (Noncondensing)

CE Compliance: EMC (89/336 EEC) According to the Standard E N 5008 1-1 and EN 50082-1 FCC and DOC Compliant

Selection Chart

Code Number Description Outputs (2)

TCN-8901-2161 Electronic

TCN-8906-2161

Note: Setpoint range: 54 to 82°°°°F (12 to 28°°°°C)

Room

Thermostat

0 to 10 VDC Analog R A 0 to 10 VDC Analog D A

On/Off RA Triac On/Off DA Triac

Sensor

Input

Built-in

Accessories

Code Number Description

ACC-INSL-0 Foam Pad Kit for Wallbox Mounting (10 per package ) ACC-INSL-1 Foam Pad Kit for Sur face Mo unting (10 per package) T-4000-119 Allen-Head Adjustme ntT ool (30 per package) TM-9100-8901 Dial Stop Screws Kit (100 self-tapping screws per package) TM-9100-8931 Plastic Surface Mounting Kit

Repair Parts

Code Number Description

TE-67E0-600 Replacement End Caps (10 per package) TE-67W-600 Wallbox M ounting Kit

The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

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Unoccupied Offset

TCN-890x Electronic Room Thermostat (Continued)

Dimensions

3.15 (80) 1.29 (33)

65 70

3.15

12 28

(80)

(tcn-890x cat06.eps)

Setpoint

Dial

Temperature Scale

TCN-890x Cover Dimensions, in. (mm)

tcn-890x cat07.eps)

2.37 (60.3)

2.37

(60.3)

5 6

2.40

(60.9)

Control Sequence Diagrams

tcn-890x cat04.eps

Unoccupied Offset

100%

Output

Unoccupied Offset Unoccupied Offset

UnoccupiedUnoccupied

RA Output (Heating) DA Output (Cooling)

TCN-8901 0 to 10 VDC Control Sequence

tcn-890x cat05.eps

Unoccupied Offset

Output

Unoccupied Offset Unoccupied Offset

Controls Group 507 E. Michigan Street P.O. Box 423, Milwaukee, WI 53202 Code No. LIT-1900160

Unoccupied Offset

Temperature

RA PB

Setpoint

DBDB

OccupiedOccupied

UnoccupiedUnoccupiedUnoccupiedUnoccupied

Unoccupied Offset

Temperature

2.43 (61.7)

TCN-890x Base Dimensions, in. (mm)

tcn-890x cat08.eps)

3.07 (78)

4.65 (118)

1.26 (32)

3.28

(83.4)

TCN-890x Wallplate Dimensions, in. (mm)

Wiring Diagrams

24 VAC

0to10V Heating Actuator

0to10V Cooling Actuator

RA/DA Contact

Unoccupied Contact

Do Not Connect

Factory Installed Jumper

Do Not Connect

Wiring the TCN-8901, 0 to 10 V

Internal Connection (Pins 4, 8, and 11)

Off

UnoccupiedUnoccupied

tcn-890x cat02.eps

TCN-8901

24 VAC

24 VAC Common

RA Output

Common

DA Output

RA/DA Input

Common

Unoccupied Input

Common

Sensor

DBDB

RA DIF

OccupiedOccupied OccupiedOccupied

Setpoint

DA DIF

TCN-8906 On/Off Control Sequence

tcn-890x cat03.eps

24 VAC

On/Off Heating Actuator

On/Off Cooling Actuator

RA/DA Contact

Unoccupied Contact

Do Not Connect

Factory Installed Jumper

Do Not Connect

Internal Connection (Pins 1 and 4, 8 and 11)

Wiring the TCN-8906, On/Off

Temperature

DA Output (Cooling)RA Output (Heating)

UnoccupiedUnoccupied

TCN-8906

24 VAC

24 VAC Common

RA Output

24 VAC

DA Output

RA/DA Input

Common

Unoccupied Input

Common

Sensor

2/2