Salus RT500RF User Manual

Programmable Room Thermostat
With RF

Instruction Manual

Model No RT500RF

PRODUCT COMPLIANCE

This product complies with the essential requirements of the
following EC Directives:

Electro-Magnetic Compatibility directive 2004/108/EC

•

Low Voltage Directive 2006/95/EEC

•

EC Marking directive 93/68/EEC

•

SAFETY INFORMATION

These instructions are applicable to the SALUS Controls model stated
on the front cover of this manual only, and must not be used with
any other make or model.

These instructions are intended to apply in the United Kingdom only,
and should be followed along with any other statutory obligations.

This accessory must be fitted by a Competent person, and
installation must comply with the guidance provided in the current
editions of BS7671 (IEE Wiring Regulations) and Part ‘P’ of the
Building Regulations. Failure to comply with the requirements of
these publications could lead to prosecution.

Always isolate the AC Mains supply before opening or removing
the unit from the wall or wall box.

When fitting batteries don’t mix old and new batteries
together. Do not use rechargable batteries.

Please leave these instructions with the end user where they should
be kept in a safe place for future reference.

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RT500RF INSTRUCTION MANUAL

INTRODUCTION

What is a programmable room thermostat?

... an explanation for householders

A programmable room thermostat is both a programmer and a room thermostat.
A programmer allows you to set ‘On’ and ‘Off’ time periods to suit your own lifestyle. A
room thermostat works by sensing the air temperature, switching on the heating when the
air temperature falls below the thermostat setting, and switching it off once this set
temperature has been reached.

So, a programmable room thermostat lets you choose what times you want the heating to
be on, and what temperature it should reach while it is on. It will allow you to select
different temperatures in your home at different times of the day (and days of the week) to
meet your particular needs.

Turning a programmable room thermostat to a higher setting will not make the room heat
up any faster. How quickly the room heats up depends on the design of the heating system,
for example, the size of boiler and radiators.

Neither does the setting affect how quickly the room cools down. Turning a programmable
room thermostat to a lower setting will result in the room being controlled at a lower
temperature, and saves energy.

The way to set and use your programmable room thermostat is to find the lowest
temperature settings that you are comfortable with at the different times you have chosen,
and then leave it alone to do its job. The best way to do this is to set low temperatures first,
say 18°C, and then turn them up by one degree each day until you are comfortable with the
temperatures. You won’t have to adjust the thermostat further. Any adjustments above
these settings will waste energy and cost you more money.

If your heating system is a boiler with radiators, there will usually be only one
programmable room thermostat to control the whole house. But you can have different
temperatures in individual rooms by installing thermostatic radiator valves (TRVs) on
individual radiators. If you don’t have TRVs, you should choose a temperature that is
reasonable for the whole house. If you do have TRVs, you can choose a slightly higher setting
to make sure that even the coldest room is comfortable, then prevent any overheating in
other rooms by adjusting the TRVs.

The time on the programmer must be correct. Some types have to be adjusted in spring
and autumn at the changes between Greenwich Mean Time and British Summer Time.

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You may be able to temporarily adjust the heating programme, for example, ‘Override’,
‘Advance’ or ‘Boost’. These are explained in the manufacturer’s instructions.

Programmable room thermostats need a free flow of air to sense the temperature, so they
must not be covered by curtains or blocked by furniture. Nearby electric fires, televisions,
wall or table lamps may prevent the thermostat from working properly.

INTRODUCTION

The RT500RF from SALUS Controls is a stylish and accurate 5/2 or 7 day programmable
electronic thermostat with a large, easy to read Liquid Crystal Display (LCD). This
programmable thermostat has been specifically designed to be used for both Volt Free and
AC heating applications. This programmable thermostat can replace most common
residential thermostats and is designed to be used with electric, gas or oil heating control
systems. Unlike ordinary single unit design thermostats, this is a new type of thermostat
separating the operational functions into two units.

The Receiver is used for wiring connections and heat on/off control. The Control Centre
provides the user interface and temperature sensing / control. The two units are linked
together by a Radio Frequency (RF) signal.

Features

Volt free switching option

•

5/2 or 7 day programming flexibility

•

Built-in start up programming for quick installation

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Frost protection

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Large, easy to read LCD with blue backlight

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Burner on symbol

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Easy to use programming

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User friendly

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RT500RF INSTRUCTION MANUAL

INSTALLATION

Please read the important safety information at the start of this
manual before you begin to install the device.

The RT500RF Control Centre is easily installed using the Industry
Standard back plate supplied with the unit – this is used purely for
mounting purposes, as no wiring is needed for the Control Centre.
The back plate can be mounted directly to the wall surface.

The ideal position to locate the RT500RF Control Centre is about

1.5m above floor level. It should be mounted in a location where the
thermostat is accessible, reasonably lit and free from extremes of
temperature and draughts. Do not mount the thermostat on an
outside wall, above a radiator or in a location where it may be
subjected to direct sunlight.

To ensure trouble free operation of the Radio Frequency (RF) signal,
always ensure that the programmable thermostat is mounted away
from any possible sources of interference (such as radios, TV sets,
computers, etc.), and is not mounted on or in close proximity to
large metal objects. Installing the RT500RF in enclosed areas such as
cellars and basements is not recommended.

CONNECTING THE RT500RF RECEIVER

NOTE: All electrical installation work should be carried out by
a suitably qualified Electrician or other competent person.

If you are not sure how to install this programmable thermostat
consult either with a qualified electrician, heating engineer or your
boiler / heating system supplier for advice on how to continue.

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The RT500RF Receiver should be mounted in a
suitable location that is both accessible for the
connection of mains and control wiring, and
allows good reception of the RF signal. The
Receiver needs a 230V AC mains supply to
operate, and this should be fused
appropriately (13A max.). The Receiver should
be mounted in a location where it will not
come into contact with water, moisture or
condensation.

The Receiver On/Off switch is accessible from
the front face of the Receiver, as shown in this
picture:

On the front cover of the Receiver you will see
that there is the On/Off switch and two Light
Emitting diodes (LEDs). The switch allows
you to turn off the Receiver if necessary to
prevent it calling for heat. The bottom LED
(red) will illuminate when the switch is in the
‘On’ position and the unit is receiving power.
The top LED (green) illuminates when the
Receiver unit is receiving a heat call
transmission from the Control Centre.

The wiring terminals and RF Address Code setting DIP switches are located on the
rear of the Receiver, as shown in this picture:

RECEIVER WIRING TERMINALS

Terminal Identifier Description

1 NO Normally Open [N/O]

2 COM Linked Live feed (230V AC heating applications only)

3 L Live feed (230V AC)

4 N Neutral

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RT500RF INSTRUCTION MANUAL

TYPICAL WIRING INSTALLATIONS

a.230V AC Installation

Notes:

• Receiver unit should have a permanent 230V AC main supply

• Confirm that the Boiler has an external thermostat loop and
is configured for 230V switching

• If the boiler has two terminals for the thermostat, remove the
link from the boiler

b. 24V Installation

Notes:

• Receiver unit should have a permanent 230V AC main supply

• Confirm that the Boiler has an external thermostat loop
and is NOT configured for 230V switching

• If the boiler has two terminals for the thermostat,
remove the link from the boiler

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CONTROL CENTRE JUMPER SETTINGS

Changes to the jumper settings should only be made by the Engineer
carrying out the installation or other qualified person.

The installer should select the jumper
positions required if changes need to be
made to the factory default settings. These
jumpers are found on the rear of the
Control Centre.

Jumper Function

Program Jumper for 5-2 (factory default setting) or 7

Span Movable jumper for selecting temperature span

1,2,3,4,5 Removable jumpers for altering the RF address

NOTE:

individual days programming.

of ± 0.5°C (factory default setting) or ± 1.0°C

code when used in conjunction with the
corresponding DIP switch on the Receiver.

The Reset button must be pressed after changing jumper positions.

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RT500RF INSTRUCTION MANUAL

RF ADDRESS CODE SETTING

If there is another unit being used nearby, e.g. in the next house or as part
of a multiple installation, your Receiver may be fault triggered by the other
Control Unit. You can change the RF Address Code to help prevent this
problem.

Each Receiver can only respond to RF transmissions from a Control Centre
that has the same RF address code setting.

Disconnect any AC power to the Receiver, and remove the batteries from the
Control Centre before attempting any adjustment of the RF Address Code
switches and jumpers. If you are not sure how to carry out this operation
correctly, consult either with a qualified electrician or heating engineer.

To adjust the RF address code of the Receiver, simply push up one or more
of the 5 DIP switch levers on the DIP switch bank located on the back of the
receiver (the levers are numbered 1 to 5 from bottom to top, as shown in the
picture below), and then make a note of the setting of each switch:

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