1. Introduction
The TH150 Series electronic thermostat is designed for low-voltage
pressure-dependent variable air volume (VAV) applications. It
comes in four different models:
TH150 Series
Installation and User Guide
VAV Thermostat
• TH150-1A • TH150-1F
• TH150-1A2T • TH150-1F2T
Depending on the model, the TH150 thermostat can have up to
three outputs connected to the following control devices:
actuators
thermal valves (N.O. and N.C.)
solenoid valves
solid-state relays (SSRs)
silicon-controlled rectifiers (SCRs)
mechanical relays
contactors
Accessories
RC840 or RC840T electromechanical relay
RT850 or RT850T solid-state relay
AC146-410 temperature sensor
AC144-03 temperature sensor
2. Installation
2.1 Mounting Instructions
n Remove the thermostat from its base by unscrewing the cap-
tive screw and tilting the bottom of the thermostat up. The
screw cannot be completely removed.
Configuration and status display
Heating mode
Cooling mode
Temperature
adjustment
button
Override button
Temperature display
Output power display
2.2 Terminal Designations
The designations of the terminals vary according to the particular
model of thermostat. Refer to the following table for the description
of each terminal.
TERMINAL DESCRIPTION
1224 VAC
COM
34AN1
COM
34OPEN
CLOSED
56T2/AN2
T2/COM
78T3
T3
910COM
o Pass the wires through the center hole of the base and secure
the base to the wall or onto an electrical box.
p Wire the thermostat. See section 2.2 for terminal designations
and section 3 for typical wiring diagrams.
q Reinstall the thermostat onto its base and secure with the cap-
tive screw.
TH150 400-150-000-C 5/9/06 1/6
SENSOR
911COM
C-Over
912COM
NSB
Note: To configure the terminals, see section 4.
Power supply
Models TH150-1A and TH150-1A2T
Output 1
Models TH150-1F and TH150-1F2T
Output 2 (models TH150-1A2T and TH150-1F2T)
Output 3 (models TH150-1A2T and TH150-1F2T)
External sensor input. (For applications requiring
an external sensor, see section 4.2.)
Mode Changeover input (N.O. contact). See section 5.5.2.
Night Setback activation input (N.O. contact).
See section 5.6.
3. Typical Applications
FIGURE 1: Damper control with electric reheat and auxiliary
baseboard heating.
FIGURE 3: Damper control with automatic changeover, electric reheat and central cooling
FIGURE 2: Damper control with electric reheat and auxiliary
hot-water heating
FIGURE 4: Temperature control of fresh air supply
CAUTION
Do not connect
common to ground
FIGURE 5: Changeover and NSB inputs sharing the same
24-Vac transformer
TH150 400-150-000-C 5/9/06 2/6
FIGURE 6: Changeover and NSB inputs using different 24-Vac
transformers
CAUTION
Do not connect common to ground
4. Configuration
4.1 Configuration Menus
1A model
Application
(section 4.2)
Internal sensor
0
1 Room 1 Heat / 0-10 V 2 2°C (4°F) 1 10%
2 Return 2
3 Supply 3 Heat / 2-10 V 4 4°C (8°F) 3 30%
4 Auto changeover 5 5°C (10°F) 4 40%
5 Limited cooling 6 6°C (12°F) 5 50%
Application
(section 4.2)
Internal sensor
0
1 Room 1 Heat 2 2°C (4°F) 1 10% 1 90
2 Return 3
3 Supply 4 4°C (8°F) 3 30% 3 110
4 Auto changeover 5 5°C (10°F) 4 40% 4 120
5 Limited cooling 6 6°C (12°F) 5 50% 5 130
Default mode &
Output 1 type
(section 4.3.1)
0 Cool / 0-10V 1 1°C (2°F) 0 0%
Cool / 2-10 V 3 3°C (6°F) 2 20%
Default mode
(section 4.3.1)
0 Cool 1 1°C (2°F) 0 0% 080
NSB value
(section 5.6)
7 7°C (14°F)
8 8°C (16°F)
9 9°C (18°F)
NSB value
(section 5.6)
3°C (6°F) 2 20% 2 100
7 7°C (14°F) 6 140
8 8°C (16°F) 7 150
9 9°C (18°F) 8 160
Output 1
min. opening
(section 4.3.2)
1F model
Output 1
min. opening
(section 4.3.2)
(section 4.6)
Can be set
between 35°C
(95°F) and
’’minimum
setpoint + 1’’
Default value
is 35°C (95°F)
Maximum
setpoint
Output 1
opening time
(section 4.3.3)
Minimum
setpoint
(section 4.6)
Can be set
between 10°C
(50°F) and
’’maximum
setpoint - 1’’
Default value
is 10°C (50°F)
Maximum
setpoint
(section 4.6)
Can be set
between 35°C
(95°F) and
’’minimum
setpoint + 1’’
Default value
is 35°C (95°F)
n Remove the thermostat from its base and
set the SW2 switch to MENU.
o Reinstall the thermostat. The thermostat is
now in configuration mode. The first digit
flashes to indicate that the first item of the
menu can now be modified.
p To modify the setting, use the up/down
arrows. Refer to the adjacent tables.
q Press Override to save the new setting and
go to the next item.
r Repeat steps 3 and 4 for remaining items.
s When the configuration is done, set the
SW2 switch back to NORMAL.
NOTE: Factory settings are
inside the shaded cells.
Minimum
setpoint
(section 4.6)
Can be set
between 10°C
(50°F) and
’’maximum
setpoint - 1’’
Default value
is 10°C (50°F)
1A2T model
Application
(section 4.2)
0
Internal sensor
1 Room 1 Heat / 0-10 V 1 SSR 24 VAC 1 SSR 24 VAC 1 10% 2 2°C (4°F) 1 10%
2 Return 2
3 Supply 3 Heat / 2-10 V 3 N.O. Valve 3 N.O. Valve 3 30% 4 4°C (8°F) 3 30%
4 Auto changeover 4 Mech. relay 4 Mech. relay 4 40% 5 5°C (10°F) 4 40%
5 Limited cooling 5 SSR 3-32 V 5 Contact 5 50% 6 6°C (12°F) 5 50%
a. If Output 2 type is set to 0-4, set the SW6 switch to Triac. If the output type is set to 5-8, set the switch to Analog (see section 4.7).
Application
(section 4.2)
Internal sensor
0
1 Room 1 Heat 1 SSR 24 VAC 1 SSR 24 VAC 1 10% 2 2°C (4°F) 1 10% 1 90
2 Return 2 N.C. Valve 2 N.C. Valve 2 20% 3
3 Supply 3 N.O. Valve 3 N.O. Valve 3 30% 4 4°C (8°F) 3 30% 3 110
4 Auto changeover 4 Mech. relay 4 Mech. relay 4 40% 5 5°C (10°F) 4 40% 4 120
5 Limited cooling 5 SSR 3-32 V 5 Contact 5 50% 6 6°C (12°F) 5 50% 5 130
a. If Output 2 type is set to 0-4, set the SW6 switch to Triac. If the output type is set to 5-8, set the switch to Analog (see section 4.7).
Default mode &
Output 1 type
(section 4.3.1)
0 Cool / 0-10V 0 Not used 0 Not used 0 100% 11°C (2°F) 0 0%
Cool / 2-10 V 2 N.C. Valve 2 N.C. Valve 2 20% 3 3°C (6°F) 2 20%
Default mode
(section 4.3.1)
0 Cool 0 Not used 0 Not used 0 100% 11°C (2°F) 0 0% 080
Output 2 type
(section 4.4)
6 SCR 0-10 V 6 60% 7 7°C (14°F)
7 Act. 0-10 V 7 70% 8 8°C (16°F)
8 Act. / 2-10 V 8 80% 9 9°C (18°F)
Output 2 type
(section 4.4)
6 SCR 0-10 V 6 60% 7 7°C (14°F) 6 140
7 Act. 0-10 V 7 70% 8 8°C (16°F) 7 150
8 Act. / 2-10 V 8 80% 9 9°C (18°F) 8 160
a
a
Output 3 type
(section 4.5)
Output 3 type
(section 4.5)
Output 3
activation
(section 4.5)
9 90%
1F2T model
Output 3
activation
(section 4.5)
9 90%
NSB value
(section 5.6)
NSB value
(section 5.6)
3°C (6°F) 2 20% 2 100
Output 1
min. opening
(section 4.3.2)
Output 1
min. opening
(section 4.3.2)
opening time
(section 4.3.3)
Maximum
setpoint
(section 4.6)
Can be set
between 35°C
(95°F) and
’’minimum
setpoint + 1’’
Default value
is 35°C (95°F)
Output 1
Minimum
setpoint
(section 4.6)
Can be set
between 10°C
(50°F) and
’’maximum
setpoint - 1’’
Default value
is 10°C (50°F)
Maximum
setpoint
(section 4.6)
Can be set
between
35°C (95°F)
and ’’min
setpoint + 1’’
Default
value is
35°C (95°F)
Minimum
setpoint
(section 4.6)
Can be set
between
10°C (50°F)
and ’’max
setpoint - 1’’
Default
value is
10°C (50°F)
TH150 400-150-000-C 5/9/06 3/6
4.2 Application Types
The following table shows the different thermostat applications and
their corresponding settings in the configuration menu.
The following table shows the different default modes, the different
output types for Output 1, and their corresponding settings in the
configuration menu.
Menu setting Description
Internal
0
sensor
1Room
2 Air return
3 Air supply
Automatic
4
changeover
Limited
5
cooling
To control the ambient temperature using the internal
(built-in) sensor
To control the ambient temperature using the AC144-03
temperature sensor (the internal sensor is not used)
To control the temperature at the air return using the
AC146-410 temperature sensor (the internal sensor is
not used)
To control the temperature at the fresh air supply using
the AC146-410 temperature sensor (the internal sensor
is not used)
To control the ambient temperature using the internal
sensor. The AC146-410 temperature sensor is used for
automatic changeover. See section 5.5.1.
To use the outdoor air for cooling whenever possible.
The AC146-410 temperature sensor is used to measure
the outdoor air temperature. The internal temperature
sensor measures the room temperature which is then
compared with the setpoint. If the room temperature is
lower than the setpoint, the air intake damper remains
closed. If the room temperature is higher than the
setpoint, the latter is then compared with the outdoor
temperature. If the fresh air temperature is lower than
the setpoint by more than 3°C (5.4°F), the damper
opens to allow cool air in.
Menu setting 1A & 1A2T models 1F & 1F2T models
0
1
2
3
Cool / 0-10 V analog
(max. of 10 min. refresh)
Heat / 0-10 V analog
(max. of 10 min. refresh)
Cool / 2-10 V analog
(max. of 10 min. refresh)
Heat / 2-10 V analog
(max. of 10 min. refresh)
Cool
(24 V tri-state floating)
Heat
(24 V tri-state floating)
4.3.2 Minimum Opening
The minimum damper opening can be set between 0 and 50 %.
Note: It is not recommended to set the minimum damper opening to
0 % (fully closed) when a duct heater is connected to Output 2 or 3.
4.3.3 Opening time (1F and 1F2T models only)
The damper opening time can be set between 80 and 160 seconds.
4.4 Output 2 (models TH150-1A2T and TH150-1F2T)
Output 2 controls heating only, regardless of the thermostat’s mode.
When the thermostat is in heat mode, Output 2 is activated as soon
as Output 1 reaches its full capacity. When the thermostat is in cool
mode, Output 2 is activated when the measured temperature drops
below the setpoint.
4.3 Output 1
Output 1 is used to control a damper. It controls heating when the
thermostat is in heat mode or cooling when the thermostat is in cool
mode.
Set the following configuration parameters:
• Default mode
• Output type (1A and 1A2T models only)
• Minimum opening
• Opening time (1F and 1F2T models only)
4.3.1 Default Mode / Output Type
The default mode (heat/cool) is used for the following:
• The default mode is the thermostat’s mode at power-up.
• The default mode is the active mode when the N.O. changeover
contact is open (see section 5.5.2).
• When configured as a contact (see section 4.5), Output 3 controls
either heating or cooling depending on whether the default mode
is set to heat or cool respectively.
The following table shows the output types for Output 2 and their
corresponding settings in the configuration menu.
Menu setting Description
0 Not used
1
2
3
4
5 0-10 V pulsed / 1 sec. cycle (e.g., 3-32 V SSR)
6
7 0-10 V analog / max. of 10 min. refresh (e.g., valve)
8 2-10 V analog / max. of 10 min. refresh (e.g., damper)
24 VAC pulsed (triac) / 1 sec. cycle
(e.g., 24 V SSR such as Aube’s RT850 or RT850T)
24 VAC pulsed (triac) / 10 min. cycle / direct action
(e.g., N.C. thermal valve)
24 VAC pulsed (triac) / 10 min. cycle / reverse action
(e.g., N.O. thermal valve)
24 VAC pulsed (triac) / 15 min. cycle (e.g., mechanical
relay such as Aube’s RC840 or RC840T)
0-10 V analog / 1 sec. refresh
(e.g., SCR controlled device such as a re-heater)
Note: If 0-4 is selected, set the SW6 switch to Triac. If 5-8 is
selected, set the switch to Analog (see section 4.7)
TH150 400-150-000-C 5/9/06 4/6
4.5 Output 3 (models TH150-1A2T and TH150-1F2T)
The following table shows the output types for Output 3 and their
corresponding settings in the configuration menu.
Menu setting Description
0 Not used
1
2
3
4
5
When any setting between 1 and 4 is selected, Output 3 controls
heating only, regardless of the thermostat’s mode.
24 VAC pulsed (triac) / 1 sec. cycle
(e.g., 24 V SSR such as Aube relays RT850 or RT850T)
24 VAC pulsed (triac) / 10 min. cycle / direct action
(e.g., N.C. thermal valve)
24 VAC pulsed (triac) / 10 min. cycle / reverse action
(e.g., N.O. thermal valve)
24 VAC pulsed (triac) / 15 min. cycle (e.g., mechanical
relay such as Aube relays RC840 or RC840T)
N.O. contact (The contact closes when Output 1 reaches
or exceeds set percentage. See section 4.1.)
4.7 DIP Switches
Three switches at the back of the control module are used to select
various options.
Temperature Display (SW1)
Selects the desired temperature display (°C or °F).
Access Mode (SW2)
Selects the operation mode (NORM) or the configuration mode
(MENU).
• Place the switch to MENU to access the configuration menu.
• Place the switch to NORM for normal display.
Output 2 Type (SW6)
Sets Output 2 type (Analog or Triac).
WARNING: Place the switch according to the type of device (Analog or Triac) connected to Output 2. Failure to do so can result in
thermostat damage.
5. Operation
5.1 Power-Up
Upon power-up, the thermostat undergoes a series of test before
displaying the actual temperature.
Note: On the TH150-1F and TH150-1F2T models, at power-up, the
message OPEN appears at the top of the screen during the calibration of the damper opening. This can last up to 3 minutes.
When setting 5 is selected, Output 3 controls heating or cooling
depending on whether the default mode has been set to heat or
cool respectively (see section 4.3.1). For example, if the default
mode has been set to heat mode, the contact remains opened when
the thermostat is in cool mode. When the thermostat is in heat
mode, the contact closes when Output 1 reaches a percentage of its
capacity, set via the configuration menu.
4.6 Minimum and Maximum Setpoints
The minimum and maximum setpoints are factory-set at 10°C
(50°F) and 35°C (95°F). The maximum setpoint can be set between
35°C (95°F) and (minimum setpoint + 1). The minimum setpoint can
be set between 10°C (50°F) and (maximum setpoint - 1).
5.2 Backlight
To turn the backlight on, press any button. The display will illuminate
for 12 seconds.
5.3 Temperature Display and Setting
The thermostat usually displays the actual temperature. To view the
setpoint, press once on one of the buttons. The setpoint
appears for 5 seconds and is indicated by the display. During the
setpoint display, press one of the buttons to change it.
Note: The temperature setpoint is automatically increased or
decreased by 1°C (2°F) when the controller switches to heating
mode or to cooling mode respectively. For example, if the setpoint is
at 25°C (77°F) in heating mode, it will become 26°C (79°F) in cooling mode and will return to 25°C (77°F) when the controller is back
in heating mode.
5.4 Output Display
The bar graph represents the voltage for an analog output or the duty cycle for a triac output. The bar graph
usually shows Output 1 power (% of damper opening).
To view Output 2 or 3, press Override for 2 seconds to
enter the diagnostic mode. Press Override momentarily
to switch between the three output graphs. To exit the
diagnostic mode, press Override for 2 seconds or wait
for 1 minute for the mode to exit automatically.
TH150 400-150-000-C 5/9/06 5/6
5.5 Mode Changeover
The thermostat can switch between heat mode and cool mode
either via:
• the automatic changeover
• the changeover input
5.5.1 Automatic 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 terminals 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.
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
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 configuration menu.
Night Setback Override
To temporarily override the NSB mode, press the Override 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
Aube warrants this product, excluding battery, to be free from defects in the workmanship 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 warranty 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 WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. 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, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 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:
TH150 400-150-000-C 5/9/06 6/6
www.aubetech.com
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