Aube Technologies TH140-28 User Manual download pdf (Page 2)

TH140-28 400-140-000-C 2008-01-15 2/4

1.3 Remote Input Wiring

The TH140 is equipped with a remote input which allows connection

of a telephone controller (optional Aube CT240), a home automation

system or any other remote control system. When a signal is

received through this input, the TH140 will automatically switch from

normal operating mode to Vacation mode, or vice versa when the sig-

nal is removed.

1.3.1 Connection to the CT240

Connect CT240 terminals A and C to TH140

terminals X and C. You must respect the

polarity.

For details on operating the telephone control-

ler, refer to the instruction manual.

1.3.2 Connection to a home automation system

Connect the TH140 to the home auto-

mation system as displayed in the wir-

ing diagram.

1.4 Configure the Thermostat

The switches are located on the back of the faceplate. Default set-

tings are highlighted.

1.4.1 Proportional Adaptive Mode (switch #5)

This mode analyzes previous cycles to define the the next duty cycle.

This control mode guarantees optimal temperature control based on

the system’s capacity. To extend the life of the system, a minimum

On/Off time of 10% of the cycle has been implemented. For example

with a 15-minute cycle, the system would not start or stop for less

than 1.5 minutes.

Ideal for:

• Radiant or convection electrical heating system

• Circulator control in a hot water system

• Electrical hot-air furnace

• Conventional gas or fuel hot-air furnace

Not recommended for:

• Gas or fuel furnace or boiler with a wall chimney having a 30-sec-

ond or higher combustion gas purging cycle. To figure out the gas

purging cycle of your system, count the time between the heating

command sent by the thermostat and the moment when the

burner actually goes on.

• Multi-zone systems, where several thermostats command a single

heating unit.

Note: In these last two cases, conventional mode with anticipation is

recommended.

Heating Cycle Selection (switches #1 and #2)

Select the cycle using switches #1 and #2. Short cycles help

eliminate temperature variations, thus increasing user comfort. Since

shorter cycles can lead to premature system wear, it is important to

select the temperature control cycles appropriate to your heating

system. In general, the bigger your heating unit is, the longer the

cycles should be.

1.4.2 Conventional mode with anticipation (switch #5)

This mode is compatible with all heating systems.

Programmable Span Selection (switches #1 and #2)

Select the span using switches #1 and #2. The default temperature

span is 0.5°C (0.9°F). For example, if the temperature setpoint is

20°C (68°F), the heating system will turn on at 19.5°C (67.1°F) and

turn off at 20.5°C (68.9°F).

Switch Description UP DOWN

1 & 2

Cycles (proportional)

15 min (see 1.4.1)

Span (conventional) 0.5°C (0.9°F) (see 1.4.2)

3 Clock display 12H

24H

Temperature display

1. If you change from °C to °F (or vice versa), you will need to reprogram

your Comfort, Economy and Vacation settings.

°F

°C

5 Temperature control mode

Proportional

(see 1.4.1)

Conventional

(see 1.4.2)

Pump protection

2. For hot water installations, it is recommended to enable this option to acti-

vate the pump for one minute every 24 hours to prevent pump seizure.

Deactivate Activate

Home automation system

Cycles EUROPE AMERICA Position

5 minutes

Not recommended for

furnaces

Not recommended for

central units

10 minutes

Gas or electric

wall furnace

Radiant or convection

electric heating

15 minutes

Fuel or gas floor

furnace, forced air

heating

Central heating

20 minutes Commercial unit

Span Hot Water Heating Forced Air Heating Position

0,3°C

(0,5°F)

Not recommended for

furnaces

Not recommended for

central units

0,4°C

(0,7°F)

Gas or electric

wall furnace

Radiant or convection

electric heating

1. 240 volt heating with relay (baseboard, convector, radiant ceiling, etc.)

0,5°C

(0,9°F)

Fuel or gas floor

furnace

Central heating

0,6°C

(1,1°F)

Commercial unit

400-140-000-C (TH140-28) ENG.fm Page 2 Tuesday, January 15, 2008 1:46 PM

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