Salus ERT50T Triac User manual
Instruction Manual
Model No
ERT50T Triac
ERT50T Triac Noiseless
Digital Room Thermostat
for Underfloor
Heating Applications
2
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ERT50T TRIAC INSTRUCTION MANUAL
2
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.
Please leave these instructions with the end user
where they should be kept in a safe place for future
reference.
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ERT50T TRIAC INSTRUCTION MANUAL 3
INTRODUCTION
A programmable thermostat is a device that combines the
functions of both a room thermostat and heating
controller into a single unit. The programmable
thermostat is used to switch the heating system in your
home on and off as needed. It works by controlling the
temperature according to a series of programmed settings
that take effect at different times of the day.
The ERT50T Triac from Salus Controls is a stylish and
accurate digital room thermostat that is fitted with a large
easy to read Liquid Crystal Display (LCD). The ERT50T
Triac benefits from simple one-touch operation, and this
controller has been specifically designed to be used with
underfloor heating systems.
Features
•12/24 Hour Clock with Daylight Saving feature
•Key lock Function
•3 Preset and 2 User Profiles
•Comfort/Standard/Reduced Temperature Zones
•2℃/4℃ selectable Night Setback(NSB)
and Communication Bus
•8 different languages selection
•Solid State (Triac) output
•Auto/Manual Mode
•PWM or On/Off Output
•Heat/Cool selection
•Holiday Function
•Frost Protection
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INSTALLATION
Please read the important safety information at the start
of this manual before you begin to install the device.
The ideal position to locate the ERT50T Triac digital room
thermostat is about 1.5m above floor level. It should be
mounted in a location where the thermostat is easily
accessible, reasonably lit and free from extremes of
temperature. The electrical connections to the ERT50T
Triac are made to the internal terminal strip. Connection
details are shown below - no Earth connection is required
for the correct and safe operation of the thermostat as the
device is double insulated.
Terminal Connections
Terminal Description Terminal Block
N Mains Neutral
Switched Output
L Mains Live
Temperature setback
(230V AC input)
After installing the ERT50T Triac in a suitable location, wiring
connections can be made as shown above. The following
criteria apply to the installation:
• The incoming AC mains supply should be 230V AC
and fused at 2 amps.
• Optimum cable size for installation is 1.5 mm2; wiring
colours should be in accordance with the current
requirements of the IEE Wiring Regulations.
• All wiring connections should be securely made,
and be firmly terminated within each of the terminal
screw clamps.
ERT50T TRIAC INSTRUCTION MANUAL
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Do not restore the mains supply to the system until all
associated items are fully installed.
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.
Do not remove or refit the ERT50T Triac wiring without
the mains supply to the system being isolated.
SETTING MODES
When the ERT50T Triac is first powered up, the Start Up
Display will be shown.
Basic Settings
Many of the ERT50T Triac configuration and operating
settings can be changed here. Press any key to turn on the
backlight, press CANCEL key, press and hold the SELECT
and CANCEL keys together to enter program setting press
+ or - key to "Basic Setting", and press SELECT.
To change any of the basic settings, press the SELECT this
will access the Program/Basic settings menu.
Use the PLUS (+) or MINUS (-) keys to choose the item you
want to change and press the SELECT key to change to the
setting menu for that item. Pressing the CANCEL key will
exit from this menu and return you to the previous menu.
ERT50T TRIAC INSTRUCTION MANUAL 5
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ERT50T TRIAC INSTRUCTION MANUAL
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DATE AND TIME:
Press the PLUS or MINUS key to change the day setting,
then SELECT to save your choice. Do exactly the same for
the month and year. You can then choose whether to use
a 12 or 24 hour time display (the default is 24 hour).
The time is set in the same way as the date – use the
PLUS or MINUS keys to change the setting, and save
by pressing SELECT.
The last menu item is Daylight Saving – by default this is
turned on. Change the setting using the PLUS or MINUS keys,
then press the SELECT key to save the settings and return to
the Program/Basic settings menu.
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LANGUAGE:
The ERT50T Triac is programmed to operate in eight
different languages (the default is English). If you wish to
change the language used, select Language from the
Program/Basic Settings screen.
Select your choice of language with the PLUS or MINUS
keys, then press SELECT to save your choice and return to
the Program/Basic Settings screen.
Pressing CANCEL will return to the previous screen
without saving any changes.
MAINTENANCE:
The Maintenance menu allows you to view operating
times for the heating system. The ERT50T Triac will record
operating time up to a maximum of 99,999 hours.
ERT50T TRIAC INSTRUCTION MANUAL 7
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ERT50T TRIAC INSTRUCTION MANUAL
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Select the Read Operating Time entry to see a summary of
the system operating times.
This screen will show the date the operating times were
last reset, total operating time and total actuator open
time.
The timers can be reset by selecting the Reset Operating
Time item
Select Yes and then press the SELECT key to reset the
timers to 0.
Press the CANCEL key to return to the previous menu.
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CONTROL SETTINGS
The Control menu allows changes to the Temperature
Span, Communications, Frost Protection, Output, Valve
Protection and Temperature Offset settings.
To access this menu, select the Control item from the
Program menu.
Temperature Span:
The first setting that can be changed is Temperature Span.
The default setting is 0.5 °C, but this can be changed to
1.0 °C. Press the SELECT key to save your changes.
COMMUNICATIONS:
The Communicate menu item has several setting options,
some of which are only relevant when there is more than
one thermostat in the installation and they are configured
in a Master/Slave relationship. Night Setback or
Communication is only activated when Holiday or
Reduced modes are turned on. When Night Setback is
active, Crescent icon turns on and will only operate if a
connection is made to the Setback terminal .
ERT50T TRIAC INSTRUCTION MANUAL 9
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ERT50T TRIAC INSTRUCTION MANUAL
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Option Function
NSB On Night Setback mode ON
NSB Off Night Setback mode OFF
COM Off Heat/Cool Control + Night Setback OFF
COM 4C Heat/Cool Control + Night Setback 4 ºC
COM 2C Heat/Cool Control + Night Setback 2 ºC
The COM signal controls not only the Night setback
function, but also the Heat/Cool selection to any slave
thermostats – if you have any Salus Controls ERT22 or
ERT32 thermostats installed in the system, the ERT50T
Triac can control them from the communications
terminal.
The first option allows you to turn Night Setback on or off.
You can then change the communications options by
using the PLUS and MINUS keys. The available options are
COM Off, COM 4C and COM 2C.
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