
Wiring Diagram
DS-SB
ON
TIMER
OFF
Remote Air
Sensor
SL
SL
RT+ RT-
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Remove link
for Set Back
operation
L N
L
N
1 2
UH8
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FAQ
Introduction
The Heatmiser DS-SB is a flush mounted set-back thermostat and is ideal for those
who want a simple but energy efficient temperature control system. The DS-SB
features a set-back function. This function automatically reduces the set temperature
by 4°C when no time clock signal is detected.
The DS-SB thermostat has been designed to work in conjunction with the Heatmiser
UH8 wiring centre and TM4 Programmer, but can also be used as a standalone dial
thermostat.
Remote Sensor
The Heatmiser DS-SB provides the option to work with a remote temperature sensor.
When a compatible remote sensor is connected, the thermostat will automatically
switch from using it’s internal sensor to use the remote sensor instead. This function
is ideal for controlling bathrooms or when the thermostat needs to be installed in a
different area of the building to that being measured and controlled.
Temperature Up/Down Limiting
Rev 3.0
Model: DS-SB Public
Installation
IN ORDER TO AVOID ANY RISK OF ELECTRIC SHOCK, TURN OFF THE POWER TO THE HEATING
SYSTEM BEFORE COMMENCING INSTALLATION.
1. Separate the front part of the thermostat by placing a small flat head
terminal driver into the slots on the bottom face of the thermostat.
2. Terminate the thermostat as shown in the wiring diagram.
3. Screw the back plate securely back onto the wall.
4. Clip the front part of the thermostat onto the back plate and turn the power back on.
1 2
3
4
Insert pegs into the location holes positioned around the inner
edge of the facia.
This will limit the dial movement allowing you to set a minimum
and maximum temperature.

Setting The Temperature
Remote Air
Sensor
ON
OFF
TIMER
Set-back Operation
To change the set point, rotate the dial until it points to the desired temperature.
Standard Mode (with factory fitted link)
In this mode the thermostat is allowed to continuously control to the set temperature.
Remove link
for Set Back
operation
L
N
The Heatmiser DS-SB offers a set-back function that automatically reduces the set
temperature by 4°C.
To make use of the set-back function, remove the factory fitted link on the back of
the unit (see diagram). A 230v time clock is also required on the system.
When the thermostat receives a 230v signal from the time clock it will control the
temperature according to the dial setting.
When no 230v signal is received from the time clock, the thermostat will operate in
set back mode and automatically reducing the set temperature by 4°C
LED Indication
Right LED
The right LED is the power LED. It is a two colour LED and is used to indicate the
time clock / set-back status.
Left LED
The left LED indicates the heating status. It illuminates when the thermostat is
calling for heat.
Heat OnSet-back ModeNormal Mode