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.
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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.
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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 .
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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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If COM Off is selected, no setback signal will be sent to the
Slave thermostat. With COM 4C or COM 2C selected the
slave thermostat temperature will be reduced or increased
by 4 ºC or 2 ºC, depending on whether the system is in
Heating or Cooling mode.
After choosing your option, press the SELECT key to save
your selection and exit from the menu. When Night
Setback is NOT active, the crescent icon flashes.
FROST PROTECTION:
Selecting the Frost item in the menu allows you to turn
the frost protection mode of the ERT50T Triac on or off
(the default setting is On).
The Frost Protection mode temperature is preset at 5 ºC;
this temperature is factory set and cannot be adjusted.
The Frost Protection mode indicator will flash to
indicate Frost Protection mode is active.
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OUTPUT:
By selecting the Output menu item, you can change the
control method used by the programmable thermostat -
either Pulse Width Modulation (PWM) or On/Off. The
default setting is PWM.
PWM only functions when the controller is operating in
Heat mode.
VALVE PROTECTION FUNCTION:
The Valve Protection (VP) function is provided as a way to
avoid the control valve from sticking or seizing when not
being used for long periods (e.g. during the summer).
This function is enabled by turning the Valve Protection
feature on or off using the PLUS or MINUS keys (default
setting is On).
When enabled, the VP function will turn on the
thermostat output to operate the control valve for a
period of 5 minutes every week - the Valve Protection
function will still operate even if the room temperature is
higher than 35 °C.
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TEMPERATURE OFFSET:
The Temperature Offset menu item is an adjustable
setting that allows calibration of the controller to match
the ambient temperature. The Offset can be adjusted
between –3.5 °C and +3.5 °C in 0.5 °C steps.
Use the PLUS and MINUS keys to adjust the Offset setting,
and save your changes by pressing the SELECT key. After
saving the setting, the ERT50T Triac will revert back to the
Program menu.
Pressing CANCEL will return you to the Program menu
without saving your changes.
HEAT/COOL:
The Heat/Cool menu allows you to select the ERT50T
Triac’s operating mode (heating or cooling).
Select your choice of mode using the PLUS and MINUS
keys, and save using the SELECT key.
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Changing the operating mode will also exchange the
Comfort with Reduced temperature settings. The ERT50T
screen will look like this in Heating mode:
…and like this when in Cooling mode.
AFTER INSTALLATION:
After completing installation and powering up the ERT50T
Triac for the first time the thermostat will behave in the
following way: the installed firmware version will be
displayed, the backlight will turn on and then the Start Up
display will be shown prompting you to select the
Language and to set the Date and Time. After making
these selections, the ERT50T Triac will be in Home Display
mode:
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If the Reset Button is pressed, the ERT50T Triac will behave
in the same way as described above, except that most
previously saved user setting will remain.
Function Factory Default Value
Operation Mode Normal
Room Temperature 24 ºC, updated within 5 seconds
Display Mode Full Screen
Date Format DD/MM/YY
Clock 00:00 (24 hour)
Day Fri 01/01/10
Key Lock Off
Holiday On/Off Off
Program On/Off On
Language English
Timers 0 hours
Heat/Cool Heat
Span 0.5 °C
NSB (setback) Off
Frost Protection Off
Output Mode PWM
Valve Protection On
Offset 0 °C
Output Off
LCD Backlight Off
Daylight Saving On
N.B: Please be aware that after a Reset, the ERT50T Triac
output relay may turn ON if the room temperature is
lower than the Set Point temperature.
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USER INTERFACE AND CONTROLS:
The status and operation of the ERT50T Triac can be
clearly seen on the large orange backlit Liquid Crystal
Display (LCD) - this display allows the user to see at a
glance the current status of the heating system.
There are few user controls for the ERT50T Triac, making
the controller very easy to operate.
The MENU, PLUS (+), MINUS (-) and RESET keys are easily
accessible on the front panel of the controller, just below
the display. The SELECT and CANCEL keys are accessible
after opening the hinged cover on the front of the
controller.
These controls are shown below, along with a description
of each of their functions.
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USER CONTROL FUNCTION SUMMARY:
Key/Operation Symbol Functions
MENU key Activates the menu function
of the ERT50T Triac
MINUS (-) key Decreases the selected setting
PLUS (+) key Increases the selected setting
RESET button Resets the controller to default
(original factory) settings
SELECT key Selects or saves the currently
highlighted menu or setting
CANCEL key Cancels the current selection
or exits the active menu
OPERATION
As previously described, the ERT50T Triac is configured
and adjusted by the use of an intuitive user interface with
a minimal number of user controls, and the backlit LCD
gives a highly visible, easily readable indication of the
thermostat status.
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LCD INDICATOR FUNCTION SUMMARY:
Indicator Symbol Function
FROST (left Indicates frost protection
hand side mode is active.
– flashing)
CRESCENT Indicates setback temperature
mode is active.
TEMPERATURE Indicates either current room
temperature default is 24℃
or set point temperature.
COOLING Indicates cooling mode is active.
HEATING Indicates heat control
mode is active.
KEY LOCK Indicates key lock is turned on.
MANUAL Indicates the controller is
operating in manual mode.
HOLIDAY Indicates holiday mode is active.
FAMILY Preset (predefined) profile for
family environments.
SINGLE Preset (predefined) profile for
single user environments.
OFFICE Preset (predefined) profile for
office environments.
NAME 1 User definable and
re-nameable profile.
NAME 2 User definable and
re-nameable profile
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PROFILES:
The ERT50T Triac has a number of preset profiles that
simplify installation and setup. The profiles contain
default settings that should meet the majority of needs in
a range of environments, meaning that the controller can
work ‘out of the box’ with no reprogramming. The five
preinstalled profiles are:
FAMILY
SINGLE
OFFICE
NAME 1
NAME 2
Each profile has settings for 7 weekdays, 6 different times
of day and 3 different temperature zones:
Time of Day Start End
Early Morning 06:00 08:00
Morning 08:00 12:00
Noon 12:00 14:00
Afternoon 14:00 18:00
Evening 18:00 23:00
Night 23:00 06:00
Temperature Zone Setting
(heating mode)
Standard 20.0 °C
Comfort 24.0 °C
Reduced 16.0 °C
Programming the ERT50T Triac is very easy, and only
needs you to select a combination of times of day and
temperature zone, as in these examples:
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Example 1 – Profile=Family, Days=Mon-Fri
Early Morning 06:00 08:00 Comfort
Morning 08:00 12:00 Standard
Noon 12:00 14:00 Comfort
Afternoon 14:00 18:00 Standard
Evening 18:00 23:00 Comfort
Night 23:00 06:00 Reduced
Example 2 – Profile=Single, Days=Mon-Fri
Early Morning 06:30 07:30 Comfort
Morning 07:30 12:00 Standard
Noon 12:00 15:00 Comfort
Afternoon 15:00 16:00 Standard
Evening 16:00 00:00 Comfort
Night 00:00 06:30 Reduced
EVERYDAY FUNCTIONS (EDF)
The ERT50T Triac gives the user the option of three
different idle screen display modes, depending on the
user’s preference: Full screen, Selected screen or Basic
Screen. In all three idle screen modes, the displayed
temperature is the current room temperature.
Full Screen:
In full screen mode the weekday, date, time, temperature,
heat or cool, time of day, temperature zone and profile
are displayed.
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