Salus Controls Installation Guide Operating and mounting instructions

SALUS RT 10

Electronic room thermostat for radiant panel,

radiator and convector heating systems

Installation and

operating instructions

General

Congratulations on choosing to purchase
a SALUS room thermostat. In selecting the
room temperature controller that can boast
some considerable advantages over its con­ventional, mechanical counterparts. This
controller is very simple to use with its stan­dard rotary knob and, with its state-of-theart
electronics, it can offer you unparalleled ease
of control for all manner of heating systems.

The RT 10‘s features, which are described
in detail below, ensure that you can control
your heating system in a precise, easy and
energy-saving way.

Technical characteristics

Pulse width modulation (PWM)
Radiant panel heating systems tend to have a
problem with overshooting, i.e. rooms conti­nue to be heated even after the desired tem­perature has been reached and the valve has
been closed. The RT 10 solves this problem
electronically and especially effectively using
what is known as pulse width modulation. By
continuously comparing set temperature with
actual temperature, the lengths of opening
times for the valve actuators are regulated
in such a way that the temperature is almost
completely prevented from exceeding or fal­ling below the set temperature. In this way,
the required temperature setting is regulated
in a precise and convenient way.

Note: When the RT 10 is used with radiator
or convector heating systems, pulse width
modulation can be switched off if necessary
(see ‚Basic settings‘ section).

Valve protection function
To ensure that valves remain movable and
ready for use even when they are unused for
considerable periods – e.g. over the summer
– the RT 10 includes a valve protection func­tion. Briefly once a week, even when there is
no requirement for any heat, the valve actua­tors open the valves that they control.

Note: The valve protection function can be
switched off if it is not required (see ‚Basic
settings‘ section).

Temperature reduction
Timed and demand-oriented heating control
are amongst the best ways of managing hea­ting energy in an economical way. The RT10
has an integrated temperature reduction
function which enables you to automatically
reduce the set temperature by 4K with no
need for any costly add-on installation on the
boiler controller. This ‚night reduction‘ can
be activated by an external signal, e.g. time
control from a terminal strip, or using a stan­dard external timer.

Installation

The RT 10 room thermostat is designed as
an electronic temperature controller for the
electrical fine adjustment of hot-water based
heating systems, and is used for controlling
electro-thermal valve actuators or other elec­trical devices. It is vitally important that the
maximum switching current specified in the
technical specifications should not be excee­ded! We are not liable for any form of impro­per use.

This equipment must only be installed by
anauthorised, qualified engineer, and only in
accordance with the wiring diagram. Instal­lation must also be in accordance with the
latest VDE regulations as well as your electri­city supplier‘s regulations. The system must
be in a de-energised state whilst installation
is carried out, and all safety instructions
must be followed to the letter.

The control may only be mounted on a non­conductive surface. Find a position for the
thermostat where it is not covered by curta­ins, furniture or anything else. The controller
must not be installed too close to any heat
source (lights, stove, direct sunlight etc.),
nor should it be installed in a position where
it will be exposed to draughts. The control­ler must be installed in a suitable location in
order for room temperature to be monitored
accurately and accordingly regulated with
precision.

Important: The thermostat must be dis­connected from its power supply before its
housing is opened.

Wall mounting
The housing cover must be separated from
the base plate before the controller is fitted.
Follow the steps listed below:

Carefully pull off the adjuster wheel.1.
Remove the screw from under the adju-2.
ster wheel.
Open the housing by pulling off its cover 3.
on the adjuster wheel (right) side.

Now, using the screws supplied, screw the
base plate firmly to the wall or the flush­mounted socket.

Connection

The thermostat must be wired in accordance
with the wiring diagram below:

RT 10 230 V Model

Terminal



Lead for temperature reduction

N Neutral conductor supply lead

L 230VAC power supply



Switch output (valve actuator, terminal
strip)

RT 10 24 V Model

Terminal



Lead for temperature reduction

L2 Neutral

NC Circuit closed once temperature reached

1

 Common

NO Circuit open once temperature reached

2

L1 24VAC power supply

1

e.g. cooling unit 2 e.g. heating unit

Basic settings

The jumpers on the PCB can be used to turn
on or off various functions of the RT 10:

RT 10 Jumpers

Switch

Function ON OFF

VP

Valve protection
function

PWM

Pulse width
modulation



Temperature
reduction

The factory setting for all these functions is
ON. You can change these settings according
to your own requirements by moving the
contact terminals on the jumpers.

Important: The contact terminals should not
be removed.

As long as the installation is carried out to a
professional standard, the criteria for protec­tion class II will be satisfied.

Operation

The RT 10 electronic room thermostat is
used for regulating the temperature in dry,
enclosed rooms with a normal environment
and maximum humidity of 95% (nonconden­sing).

It is extremely simple and convenient to set
the desired room temperature using the
rotary knob. This electronic control system
ensures that the set room temperature is
maintained virtually without fluctuation and,
when required, automatically activates a red­uction in temperature.

Never use anything other than a soft, dry
cloth to clean the unit. Never use any clea­ning agents containing solvents or any sharp
objects to clean the unit!

Technical data 230 V 24 V

Product no.: 412.100 412.101

Operating voltage: 230VAC / 50Hz 24VAC / 50 Hz

Electronic switch output

Max. switching current: 10 (2) A

Rated impulse voltage: 4000 V

Max. no. of valve actuators: 5 units - 3 W

Temperature range: 5°C - 30°C

Degree of protection through casing: IP 30

Automatic function: type 1.C (EN 60730-1)

Degree of contamination: 2 (Household)

Dimensions W/H/D in mm: 75 / 75 / 27

Operating temperature: 0°C - 50°C

Storage temperature: -25°C - 65°C

Control pollution: Normal