Smart Temp ERT-Super User Manual

TM

Super

Smart Temp

ERT

Manual

Congratulations on the purchase of your new Electronic Thermostat!

Your new Smart Temp ERT thermostat has been built using the best components and design

philosophy currently available. As a result, if properly installed your new electronic programmable

thermostat will provide you with many years of trouble free and reliable service.

Your Smart Temp ERT Thermostat has been designed to be an attractive, highly reliable and easy

to use thermostat. By taking the time to read and understand these simple instructions you can

take advantage of many of the capabilities that are offered in the ERT.

Overview

To assist in your understanding and use of the ERT, a brief description of

the functions and controls is given below. A more complete step-by-step

instruction on using the ERT is given later in the manual.

ON / OFF Button

To turn the ERT on, press the ON/OFF button, a small arrow mark will turn on next to
the word “ON” printed on the body of the thermostat. To turn the ERT off press and hold
the ON/OFF button until the arrow disappears. NOTE: If you continue to hold the
ON/OFF button for approximately 8 seconds the ERT will enter economy comfort mode
(described later in this manual)

Set Buttons

The set (or desired) room temperature can be adjusted by pressing the plus or minus
SET buttons on the face of the ERT Each press will increase or decrease the set
temperature by 1 deg C. The ERT is a single set point thermostat. For example, setting
the desired temperature at 21 deg C will bring on the AC heating if the room
temperature falls below 20 deg C and bring on the AC cooling if the room temperature
raises above 22 deg C.

Auto Fan Button

The ERT can control the system fan in two ways. Each press of the Auto Fan button
alternates the ERT between Auto fan mode or continuous (Occupied) fan mode.

Auto Fan Mode - The fan will run only while the AC system is heating or
cooling. When the need for heating or cooling stops, so does the fan. Auto
Fan mode active is indicated by an arrow symbol pointing to the A.fan text
printed on the thermostat body

Continuous Fan Mode (Occupied Fan). - In this mode, the fan will turn on
when the ERT is on and remain on until the ERT is turned off. The fan will
remain on during this time regardless of whether there is a need to bring on
the AC system heating or cooling. This mode is used to improve building
ventilation.

Mode Button

The MODE button cycles the ERT through Heat only, Cool Only, Auto-Change over or
Fan only operational modes. These modes are detailed below.

Heat only mode The ERT will turn on the AC Heating when the room
temperature falls below the set temperature. In Heat only mode the ERT will
not bring on the AC Cooling regardless of the room and Set Temperature. In
Heat only mode the arrow symbol will point to the word “HEAT” printed on the
thermostat body.

Cool only mode - The ERT will turn on the AC Cooling when the room
temperature raises above the set temperature. In Cool only mode the ERT will
not bring on the AC Heating regardless of the room and Set Temperature. In
Cool only mode the arrow symbol will point to the word “COOL ” printed on
the thermostat body.

Auto-change over mode - The ISIS will turn on the AC Heating if the room
temperature falls below the SET temperature and the AC Cooling if the room
temperature rises above the SET temperature. Auto changeover mode is
indicated by words, “HEAT” & “COOL” in the LCD.

Fan Only mode. In Fan only mode the ERT will turn on the system fan for
continuous operation. The ERT will not control the AC heating or cooling
system regardless of the room and set temperature. I

F/C Button

The ERT will display the room and set temperature in ether Deg C or Deg F. Pressing
the F/C button will toggle between these two display options.

Advanced Functions

EC or Economy Comfort Mode

Your ERT thermostat is fitted with a unique

Economy Comfort or Un-occupied mode.

The EC mode sets the thermostat mode to Auto changeover
mode and limits fan mode to Auto fan mode. In EC mode the thermostat will activate
system heating when the room falls below the EC heat Temperature and system
cooling when the room temperature is above the EC cooling temperature.

The EC mode is ideal for situations where you do not with the building to overheat or
freeze during holidays or long periods of in attendance.

To activate EC mode simply press and hold the On/Off button for 5 seconds. The
letters “EC” will be displayed on the thermostat to confirm this mode is active.

To turn off the EC mode simply press and hold the On/Off button for 5 seconds. The
thermostat display will return to normal.

The EC temperature set points can be adjusted by entering the service mode as
detailed later in this manual.

The factory default value for the EC mode is Heat Temp to 10degC and cooling temp
to 35 deg C.

Arrows indicate active modes

Displays Room & Set Temp

On

Ec

Used to turn the thermostat On & Off

Used to activate Ecconomy Comfort Mode

Smart Temp

Pict 1

21

Auto

Ec

On/Off

Fan

Sets display to Deg C or Deg F

Toggels Fan mode between Auto Fan or

Continuous Fan modes

For security and convenience the ERT may be
installed in a more remote or secure location. In
such applications the ERT will measure the
temperature in the room to be controlled via a
remotely connected temperature sensor(s).

Pict 1 shows the Smart Temp adjustable version of
this sensor.

It is important that consideration is given to this
sensor as placing hot items (such as kettles or
urns) or cold items (such as chest freezers) under
or in the vicinity of these sensors could result in
uncomfortable room temperatures.

Used to adjust set temperature

Cool
Heat
Auto
A.Fan

Set

Mode

F/C

+

-

SET

TEMP

Used to select thermostats

mode (Heat / Cool / Auto etc)

Making Life ComfortableMaking Life Comfortable

Installing the thermostat

Service Mode

Service mode is used to activate advanced installer functions. By entering this mode

it is essential that an understanding of AC functions and their consequences are

understood or inaccurate or incorrect system performance can be expected.

If you are unsure about the settings in this mode it is recommended that you contact

To enter Service Mode:

Make sure JP 2 is ON and the correct mode jumpers are set before proceeding.

Power up the thermostat

Set the room temperature to 10 Deg C.

Press and hold the Mode button for 5 seconds. An arrow at EC & Cool will activate
indicating this is the cool set point for EC mode - The temperature the ERT thermostat
will cool to when EC mode is active. Adjust this value with the temp + & - buttons.
Default value is 30 Deg C.

Press the mode button again. An arrow at EC & Heat will activate indicating this is
the heat set point for EC mode - The temperature the ERT thermostat will Heat to
when EC mode is active. Adjust this value with the temp + & - buttons. Default value
is 10 Deg C.

Press the mode button again. An arrow at Cool will activate indicating this is the
minimum permissible temperature the thermostat can be adjusted to during normal
operation. (Used to prevent the thermostat being set to unrealistic cooling
temperatures) Adjust this value with the temp + & - buttons. Default value is 10 deg C.

Press the mode button again. An arrow at Heat will activate indicating this is the
maximum permissible temperature the thermostat can be adjusted to during normal
operation. (Used to prevent the thermostat being set to unrealistic heating
temperatures) Adjust this value with the temp + & - buttons. Default value is 30 deg C.

Press the mode button again to set Reversing Valve modes or Fan control modes.

If the ERT is set to a Heat Pump Mode “HC” will be displayed with either “H” or “C”
flashing (selected). Select reversing valve to be energised in “H” (Heat) or “C” (Cool)
mode with the temp + & - buttons.

If the ERT is set to a Heat / Cool mode (No Control) “EO” will be displayed with either
“E” or “O” flashing (selected). This determines the correct method to control the fan in
heat mode - In “E” (Electric) the thermostat will energise the “G” (fan) terminal to
active the fan or “O” (oil or gas - plenum switch) will permit the heating equipment to
control its own fan. Select the correct mode with the temp + & - buttons.

Press the mode button again to return the ETN to normal mode.

Adjust the set temperature to a value more comfortable than 10 deg C.

If necessary remove JP2 (compressor protection delay)

Smart Temp for clarification before any adjustments are made.

Wiring

1 Stage Heat 1 Stage Cool

Ribbon cable connector

Relay 1

Relay 2

Relay 3

Relay 4

Relay 5

Relay 6

Relay 7

N/A Y1 Y2 W1 W2 G1 AL AL Rc Rh CT T

Sensor

Remote

Cool

Optional

Fan

Heat

24 V Active

24 V Neutral

2 Stage Heat 2 Stage Cool

Ribbon cable connector

Relay 1

Relay 2

Relay 3

Relay 4

Relay 5

Relay 6

Relay 7

N/A Y1 Y2 W1 W2 G1 AL AL Rc Rh CT T

Sensor

Remote

Cool 1

Optional

Cool 2

Fan

Heat 1

Heat 2

24 V Active

24 V Neutral

1 Stage Heat Pump with Aux Heat

Ribbon cable connector

Relay 1

Relay 2

Relay 3

Relay 4

Relay 5

Relay 6

Relay 7

N/A Y1 Y2 W1 W2 G1 AL AL Rc Rh CT T

Sensor

Remote

Comp

Optional

Aux Heat

Fan

Rev Valve

24 V Active

24 V Neutral

Jumper Configuration

HC11

HC22

HP21

HP32

JP 2 On for Comp

3 min delay

Sensor

B

A

Position A = Internal
Position B = Remote

Jumper Configuration

HC11

HC22

HP21

HP32

JP 2 On for Comp

3 min delay

Sensor

B

A

Position A = Internal
Position B = Remote

Jumper Configuration

HC11

HC22

HP21

HP32

JP 2 On for Comp

3 min delay

Sensor

B

A

Position A = Internal
Position B = Remote

For 240 V appliations the optional Smart Pak is available

Specifications

Range: 5° to 30° c.
Resolution: 1.0°c
Accuracy: 0.3°c
Dead Band: 0.8°c
Stage Delay: 1.2° c

EC Settings: 10°c & 30°c
Load rating: 2Amps.

Voltage: 24VAC.
Connectors: Screw type.
Material: PC/ABS
Size: 80 x 140 x 33mm
Flamability: UL 94V-0
Weight: 145g
Warranty: 2 years

2 Stage Heat Pump with Aux Heat

Ribbon cable connector

Relay 1

Relay 2

Relay 3

Relay 4

Relay 5

Relay 6

Relay 7

N/A Y1 Y2 W1 W2 G1 AL AL Rc Rh CT T

Sensor

Remote

Aux Heat

Fan

Rev Valve

Comp 1

Optional

Comp 2

24 V Active

Smart Temp

19 Indra Road Blackburn South 3130

Phone:[phone] Fax [phone]

www.thermostat.com.au

JP 2 On for Comp

24 V Neutral

Australia

Jumper Configuration

HC11

HC22

HP21

HP32

3 min delay

Sensor

B

A

Position A = Internal
Position B = Remote

Making Life Comfortable