Heatmiser DS1 User Manual

The Heatmiser DS1 dial type thermostat is suitable for conventional or
combi-boiler systems.

This thermostat incorporates the following functions;

• Adjustable Switching Dierential

• LED Heat and Power Indication

• 230v AC, 3A Switching

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Introduction

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Model: DS1

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 back plate to the

back box.

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

Installation

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PDF FAQ

To change the set point, rotate the dial until it points at the desired temperature.

Setting The Temperature

The Heatmiser DS1 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).

Switching Dierential

1 °C Switching

2 °C Switching

3 °C Switching

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2

3

Switch 1 & 2 OFF

Switch 1 ON and Switch 2 OFF

Switch 1 OFF and Switch 2 ON

Wiring Diagram - DS1 to Boiler Voltfree

230V Supply

For 230V
switched live to
boiler on A2
link L to A1

LS & LR ARE NORMALLY THE

ROOM THERMOSTAT CONNECTIONS

LR

LS

DS1

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