Controls Group 507 E. Michigan Street
P.O. Box 423, Milwaukee, WI 53202
Code No. LIT-1900160
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TCN-890x
Electronic Room Thermostat
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
•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.
Specifications
TCN-890x Series Electronic Room Thermostat
Power Requirements |
24 VAC ±15% at 50/60 Hz, Class 2 |
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Power Consumption |
1.5 VA with No Load |
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Remove Factory-Installed Jumper on Screw |
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Inputs |
Unoccupied Input |
Terminal Block; |
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Fixed 9F° (5C° ) Nominal Offset |
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RA/DA Remote Contact |
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Set Point |
54 to 82° F (12 to 28° C) |
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Dead Band |
0 to 4F° (0 to 2C° ) |
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(Model TCN-8906 Only) 0.4 to 4F° |
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Adjust- |
Differential |
(0.2 to 2C° ) ; |
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ments |
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Independent Adjustments for RA and DA |
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Outputs |
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Proportional |
(Model TCN-8901 Only) 2 to 7F° (1 to 4C° ); |
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Band |
Independent Adjustments for RA and DA |
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Outputs |
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TCN-8901 |
Analog, 0 to 10 VDC, 10 mA Maximum; |
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Output |
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Output Normal State is Off |
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TCN-8906 |
On/Off, Triac 24 VAC, 0.5 A Maximum; |
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Output Normal State is Off |
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Field Connections |
Screw Terminals for 24 to 14 AWG Wire |
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Mounting |
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Standard Bases for Surface or U.S. Wallbox |
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Mounting, Including Hardware |
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Housing |
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White Plastic Cover with Dark Gray Plastic |
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Mounting Base |
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Protection |
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NEMA 1, IP30 (IEC 60529) |
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Ambient |
Operating |
32 to 122°F (0 to 50°C) 10 to 95% RH |
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(Noncondensing) |
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Conditions |
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Storage |
-4 to 158°F (-20 to 70°C) 10 to 90% RH |
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(Noncondensing) |
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Dimensions (H x W x D) |
3.15 x 3.15 x 1.30 in. (80 x 80 x 33 mm) |
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CE Compliance: EMC (89/336 EEC) |
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Agency Listings
According to the Standard EN 50081-1 and
EN 50082-1
FCC and DOC Compliant
Selection Chart
Code Number |
Description |
Outputs (2) |
Sensor |
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Input |
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TCN-8901-2161 |
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Electronic |
0 to 10 VDC Analog RA |
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0 to 10 VDC Analog DA |
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Room |
Built-in |
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TCN-8906-2161 |
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Thermostat |
On/Off RA Triac |
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On/Off DA Triac |
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Note: Setpoint range: 54 to 82° F (12 to 28° C) |
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Accessories |
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Code Number |
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Description |
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ACC-INSL-0 |
Foam Pad Kit for Wallbox Mounting (10 per package) |
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ACC-INSL-1 |
Foam Pad Kit for Surface Mounting (10 per package) |
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T-4000-119 |
Allen-Head AdjustmentTool (30 per package) |
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TM-9100-8901 |
Dial Stop Screws Kit (100 self-tapping screws per package) |
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TM-9100-8931 |
Plastic Surface Mounting Kit |
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Repair Parts |
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Code Number |
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Description |
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TE-67E0-600 |
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Replacement End Caps (10 per package) |
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TE-67W-600 |
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Wallbox Mounting Kit |
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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. |
© 08/02 Johnson Controls, Inc |
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