5.5 Mode Changeover
The thermostat can switch between heat mode and cool mode either via:
•the automatic changeover
•the changeover input
5.5.1Automatic changeover
In automatic changeover, the thermostat detects when the system switches between heat mode and cool mode by comparing the air supply temperature with the ambient temperature. If the thermostat is in heat mode, it switches to cool mode when the air supply is cooler than ambient by 5°C (9°F) or more. If it is in cool mode, it switches to heat mode when the air supply is warmer than ambient by 5°C (9°F) or more.
Note: Neither the heat mode icon (
) nor cool mode icon ( 
) appears when TH150 is placed in automatic changeover.
5.5.2 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 TH150 is config- ured in automatic changeover or in limited cooling.
5.6 Night Setback
The Night Setback (NSB) mode is activated when the contact between terminals 9 and 12 is closed. When TH150 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.
5.7 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
Output ratings:
-Triac output: 0.5 A maximum @ 24 VAC
-Analog output (SCR connection): 0 - 10 V, 10 kW minimum
-Analog output (SSR connection): 0 - 10 V, 45 mA maximum 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.)
7. WARRANTY
Aube warrants this product, excluding battery, to be free from defects in the work- manship or materials, under normal use and service, for a period of three (3) years from the date of purchase by the consumer. If at any time during the war- ranty period the product is determined to be defective or malfunctions, Aube shall repair or replace it (at Aube'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)contact Aube. Aube will make the determination whether the product should be returned, 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 Aube that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer. Aube's sole responsibility shall be to repair or replace the product within the terms stated above. AUBE 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 WAR- RANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PROD- UCT. Some provinces, states or regions 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 AUBE MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUD- ING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PAR- TICULAR PURPOSE, IS HEREBY LIMITED TO THE THREE-YEAR DURATION OF THIS WARRANTY. Some provinces, states or regions 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 one province, state or region to another.
8. SERVICE
If you have any questions on the product installation or operation, contact us at:
705 Montrichard Avenue Saint-Jean-sur-Richelieu, Quebec J2X 5K8
Canada
Tel.: (450) 358-4600
Toll-free: 1-800-831-AUBE
Fax: (450) 358-4650
Email: aube.service@honeywell.com
For more information on our products, visit us at:
www.aubetech.com
