Heatmiser DS1-L User manual

Table of contents

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IN ORDER TO AVOID ANY RISK OF ELECTRIC SHOCK, TURN OFF THE POWER TO THE

HEATING SYSTEM.

This dial thermostat is designed to be surface mounted.

1. Separate the front part of the thermostat by unscrewing securing screws on the

bottom face of the thermostat.

2. Mark 2 hole positions on the wall using the backplate as a positioning template. Drill at

the marked positions and insert a wall plug in to each hole.

3. Terminate the thermostat as per wiring diagram and screw the DS1-L back plate to the

back box.

4. Reconnect the thermostat front plate and insert the securing screws.

Wiring Diagram

230V Supply

To boiler enable

DS1-L

230V Supply

To boiler enable

DS1-L

The Heatmiser DS1-L dial type thermostat is suitable for conventional or

combi-boiler systems.

This thermostat incorporates the following functions;

• Adjustable Switching Dierential

• Digital LCD

• 230v AC, 3A Switching

Want More Information?

Call our support team on: +44 (0)1254 669090

Or view technical specications directly on our website:

www.heatmiser.com

230V Switching ModeVolt Free Switching Mode

Introduction

Installation

1

4

Model: DS1-L

PDF FAQ

2

3

In normal mode, the display shows the actual room temperature. To change the set point,

rotate the dial until the digital LCD displays the new set temperature.

Setting The TemperatureDisplay Icons

The Heatmiser DS1-L has a lock facility. To lock the thermostat, press and hold down the

dial for 10 seconds. You will see a lock symbol appear. To unlock, repeat the steps above.

Heating ON Keypad Locked

The Heatmiser DS1-L oers 1, 2 and 3°C switching dierential.

With a 1°C switching dierential the heating will switch on 1°C below the set

temperature and will turn o when the set temperature is reached.

A 2°C will turn the heating on 2°C below the set temperature.

3°C will switch the heating on 3°C below the set temperature.

To set the dierential, you should set the DIP switches according to the table below.

The DIP switch can be accessed from the back of the thermostat (shown opposite).

Lock Facility

Switching Dierential

1 2

1 °C Switching

2 °C Switching

3 °C Switching

1

2

3

Switch 1 & 2 OFF

Switch 1 ON and Switch 2 OFF

Switch 1 OFF and Switch 2 ON

2 31