Aube Technologies TH303 User Manual

TH303

Programmable Thermostat

Owner’s Guide

400-303-000-C

Table of contents

Overview

About your new thermostat .............. 1

Quick reference to controls .............. 2

Quick reference to screen display .... 3

Installation

Removing the faceplate.................... 4

Wiring ............................................... 5

Installing the thermostat ................... 6

Quick start-up / Setting the clock...... 7

Operating modes

Automatic (Auto) mode..................... 8

Manual (Man) mode ......................... 9

Away mode..................................... 10

Countdown mode ............................11

Configuration

Default schedule............................. 12

Modifying the schedule................... 13

Setup parameters........................... 14

Setup procedure ............................. 16

Appendices

In case of difficulty .......................... 17

Customer assistance...................... 18

Specifications.................................. 19

3-year limited warranty ...................20

TH303

About your new thermostat

This thermostat has been designed to control an electric heating system such as
a baseboard heater, a radiant ceiling, a convector or a fan-forced heater.

The thermostat CANNOT be used with:

• a resistive load under 0.83 A

• a resistive load over 10.4 A

• a system driven by a contactor or a relay (inductive load)

• a central heating system

SUPPLIED PARTS

• One (1) thermostat

• Two (2) 6-32 mounting screws

• Two (2) solderless connectors

1

400-303-000-C

Quick reference to controls

• To turn the screen backlight on,
press the Select button once. The
backlight will remain on for 12
seconds.

• To display the setpoint

temperature, press the Up or
Down button once. The setpoint

will be displayed for 5 seconds.

• To modify the setpoint

temperature, press the Up or
Down button until the desired value

is displayed.

• To enter or exit the programming
mode, press the Select button and
hold for 3 seconds.

Help tab

Slide up from the
right and remove
to view information
on both sides.

Screen

Up button
Select button
Down button

2

Quick reference to screen display

Countdown mode (see page 11)

Flashes during
Countdown mode

Time

Day

Automatic mode (see page 8)

Manual mode (see page 9)

Away mode (see page 10)
Heating intensity indicator

(No icon appears when
heating is off.)

Periods (see page 12)

3

Setpoint temperature

(see page 2)

Ambient temperature

TH303

400-303-000-C

Removing the faceplate

TURN OFF POWER OF THE HEATING
SYSTEM AT THE MAIN ELECTRICAL
PANEL TO AVOID ELECTRIC SHOCK.

WARNI NG: Installation must be carried
out by a certified electrician and must
comply with national and local electrical
codes.

Loosen the screw holding the faceplate to
the base. The screw cannot be
completely removed and remains captive
on the base. Remove the faceplate from
the base by pulling the bottom section.

4

Wiring

Connect either one of the
thermostat wires to the
heater wire and the other
one to the power supply
wire using solderless
connectors for copper wires.

NOTE: Special CO/ALR
solderless connectors must
be used when connecting
with aluminium conductors.

2-wire installation

Power supply

5

TH303

4-wire installation

Power supply