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TB6980/TB7980 62-0238 400-150-005-B 3/23/06 6/6
5.4.2 Changeover Input
The thermostat is in the default mode when the contact between ter-
minals 9 and 11 is open and switches mode when the contact is
closed. The default mode is set via the configuration menu .
Note: The changeover contact state is ignored if the thermostat is
configured in automatic changeover or in limited cooling.
5.5 Night Setback
The Night Setback (NSB) mode is activated when the
contact between terminals 9 and 12 is closed. When the
thermostat is in the NSB mode, indicated by the ECONO
display, the temperature is lowered or raised by the set
NSB value depending whether the thermostat is in heat
mode or cool mode respectively. The NSB value is set via the con-
figuration menu.
Night Setback Override
To temporarily override the NSB mode, press the Over-
ride button. The NSB mode is lifted for the next 2 hours
or until the Override button is pressed again. During the
override, the normal setpoint is used and OVERRIDE is
displayed.
5.6 Error Codes
The following error codes can appear at the top of the display.
E1: The internal temperature sensor is defective
E2: The internal temperature sensor is shorted
E3: The external temperature sensor is defective or not connected
E4: The external temperature sensor is shorted
6. Technical Specifications
Power: 24 VAC
Current consumption: 25 mA
Output signals: Depends on output configurations
Setpoint range: 10°C to 35°C (50°F to 95°F)
Temperature display: 0°C to 60°C (32°F to 140°F)
Temperature display resolution: 0.5°C (1°F)
Mode hysteresis: 2°C (4°F)
Automatic changeover deadband: 5°C (9°F)
Duty cycle: Depends on output configurations
NSB offset: Programmable 1°C to 9°C (2°F to 18°F)
NSB override period: 2 hours
Memory protection: Configuration and setpoint
Temperature control: Proportional integral adaptive (P.I.A.)
Operating temperature: 32°F to 140°F (0°C to 60°C)
Storage temperature: -4°F to 122°F (-20°C to 50°C)
Humidity limits: 0 to 95% R.H., non-condensing
Dimensions: 69 x 118 x 27 mm (2.7 x 4.6 x 1.0 in.)
Accessories: - R841 electromechanical relay
- 50014157-001 air duct temperature sensor
- 50014156-002 remote temperature sensor
Compatible Damper/Valve actuators
:
VC6930, VC6934, VC6936
VC7930, VC7934, VC7936
ML6984
ML7984
ML6410, ML7410
ML6161B2024, MN6105A1011
ML7161A2008, MN7505A2001
Wiring: 18 AWG (1 mm
2
) wire
Mounting: - directly to drywall
- single-gang NEMA standard 2-in x 4-in electrical box
- double-gang NEMA standard electrical box with
mounting plate
7. WARRANTY
Honeywell warrants this product, excluding battery, to be free from defects in
the workmanship or materials, under normal use and service, for a period of
two (2) years from the date of purchase by the consumer. If at any time
during the warranty period the product is determined to be defective or
malfunctions, Honeywell shall repair or replace it (at Honeywell's option).
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the place
from which you purchased it, or
(ii) call Honeywell Customer Care at 1-800-468-1502. Customer Care will
make the determination whether the product should be returned to the
following address: Honeywell Return Goods, Dock 4 MN10-3860, 1885
Douglas Dr N, Golden Valley, MN 55422, or whether a replacement
product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty
shall not apply if it is shown by Honeywell that the defect or malfunction was
caused by damage which occurred while the product was in the possession
of a consumer.
Honeywell's sole responsibility shall be to repair or replace the product
within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR
ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL
OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR
INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR
IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do
not allow the exclusion or limitation of incidental or consequential damages,
so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL
MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED
WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO
THE TWO-YEAR DURATION OF THIS WARRANTY. Some states do not
allow limitations on how long an implied warranty lasts, so the above
limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights
which vary from state to state.
If you have any questions concerning this warranty, please write Honeywell
Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422 or call
1-800-468-1502. In Canada, write Retail Products ON15-02H, Honeywell
Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario
M1V4Z9.
8. SERVICE
If you have any questions about the operation of your thermostat,
please go to http://customer.honeywell.com, or call Honeywell
technical hotline at 1-763-954-6464.
6


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