PW maintenance PRT2-TS User manual

Operating Instructions
Model:
PRT2-TS / PRT2-NTS EU
01/11 Revision 1
Ref: PRT2-TS EU

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Contents Page
Display Symbols Explained 5
Temperature Display 8
Setting the Clock 8
Comfort Levels Explained 9
Locking the Keypad 12
Temperature Override 12
Temperature Hold 13
Holiday 14
Heat On/Off 15
Clean Screen 15
Factory Reset 16
Optional Feature Setup 17-22
Wiring Diagrams 23-24

What is a programmable room thermostat?
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 the boiler and radiators.
Neither does the setting affect how quickly the room cools
down. Turning a programmable room thermostat to a lower
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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 nd 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 rst, say
18ºC, 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 adjustment above
these setting 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
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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.
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 ow of air
to sense the temperature, so they must not be covered
by curtains or blocked by furniture. Nearby electric res,
televisions, wall or table lamps may prevent the thermostat
from working properly.
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Display Symbols Explained
Symbol Description
Heat On Icon
Shown when the heating is On
Flashing when the optimum start is in operation.
Frost On Icon (Heating Off)
Shown when the heating is switched off and is
protecting against frost only
Keylock Icon
Shown when the keypad is locked
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Installation Procedure
DO’s
1. Do mount the thermostat at eye level.
2. Do read the instructions fully so that you get the best
from our product.
DON’Ts
1. Do not install near a direct heat source as this will affect
the workings of the thermostat.
2. Do not push hard on the LCD otherwise you will damage
the liquid crystal display and this is not repairable.
Installation
The thermostat is designed to be ush mount, a back
box of 35mm should have been sunk in the wall prior to
installation.
Step 1
Carefully separate the front half of the thermostat from the
back plate by placing a small at head terminal driver in to
the slots on the bottom face of the thermostat.
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Step 2
Carefully unplug the ribbon connector which is plugged in to
the front half of the thermostat.
Place the thermostat front half somewhere safe.
Terminate the thermostat as shown in the diagrams at the
back of this booklet.
Screw the thermostat back plate on to the back box.
Step 3
Re-connect the thermostat ribbon cable and clip the two
halves together.
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Temperature Display
The PRT2-TS provides control of 2 zones. The zone
selected is underlined, you can select a different zone by
pressing Zone 1 or Zone 2.
Room Temp = This is the current room temperature.
SET = This is the temperature you are trying to achieve in
your home.
Setting The Clock
To set the clock in your thermostat, follow the steps below:
• With the thermostat turned on, press PROG.
• Press Clock.
• Use to set the correct Time.
• Press Day to set the correct Day.
• Press Done to accept and store.
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Comfort Levels Explained
Comfort levels allow you to set different temperatures
throughout the day. For example, you may want the home
warm in the morning when you are getting ready for work,
cooler during the day when the house is unoccupied and
then warmer in the evening when you are home relaxing.
The thermostat offers 5/2 Day Programming (4 levels for
the weekday, 4 for the weekend) and 7 day Programming
(4 levels for each day). See pages 17-22 for details on how
to switch between these modes.
Tip! If you don’t want to use all of the comfort levels, just
set the time to --.— and the thermostat will ignore this
setting.
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Factory Programmed Comfort Levels
The following comfort levels are programmed already,
however you can change them easily.
Weekday Level Time Temp
Wake 08.00 21°C
Leave 09.30 16°C
Return 16.30 22°C
Sleep 23.00 17°C
Weekend Level Time Temp
Wake 09.00 21°C
Leave 22.00 16°C
Return --.-- --°C
Sleep --.-- --°C

Changing the Comfort Levels
• Select the Zone you wish to alter, the zone selected will
be underlined.
• Press PROG and select Wake.
• Use to set the time for the 1st Comfort level.
• Use to set the temperature in °C.
• You should now repeat for the Leave, Return & Sleep
levels.
• Press Day to select the next day. In 5/2 day mode the
thermostat will highlight “Sat Sun” prompting you to
program the temperature levels for the weekend. In 7
day mode, the thermostat will highlight Tuesday.
• When complete, press Done to Store and Exit.
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Locking the Keypad
The thermostat has a keylock facility. To enable this press
the bottom right corner of the display and hold for 10
seconds.
When activated, you will see .
To cancel, repeat the steps above.
Temperature Override
Using the keys allows you to adjust the set
temperature. When you press either of these keys, you will
see the word SET and the desired temperature. Press Done
to accept.
Note: You should note that this new temperature is
maintained only until the next programmed comfort level. At
this time, the thermostat will revert back to the programmed
levels.
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Temperature Hold
The Temperature Hold function is ideal for parties or when
you will be going out for a number of hours. It allows you to
hold a temperature for a desired period.
• Press HOLD.
• The zone selected is underlined, you can select a
different zone by pressing Zone 1 or Zone 2.
• Set the desired Hold time and temperature.
• Press Done.
• To cancel, repeat the steps above and reduce the time to
00.00.
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Holiday
The Holiday function reduces the set temperature in your
home to the frost temperature setting. The thermostat will
maintain this temperature for the duration of the holiday and
will then automatically return to the program mode on your
return.
Assume you program a holiday on Monday for 1 day, the
holiday will start immediately, but the thermostat will count
the next day (Tuesday) as the holiday. The thermostat will
then revert back to its program at Midnight Tuesday.
• Press HOLIDAY.
• Enter the duration of your holiday.
• Press Done.
• To cancel a Holiday, reduce the Holiday time to 00 days.
The Holiday function works independently for each zone.
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Heat On / Off
Frost Protect Mode: Pressing the Off button once will
place the thermostat in frost protect mode. In this mode,
the thermostat will display the frost icon and will only turn
the heating on should the room temperature drop below the
set frost temperature (see pages 17-22). Should the heating
be turned on whilst in frost mode, the ame symbol will be
displayed. To cancel the frost protect mode, press the On
button.
Thermostat Off: To turn the thermostat off completely,
press and hold the Off button. The display and heating
output will be turned off. To turn the thermostat back on,
press the On button.
Clean Screen
Pressing Clean Screen will disable all buttons, allowing you
15 seconds to wipe the screen clean.
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Factory Reset
When the thermostat is on, press and hold the SCREEN
button for 10 seconds and when you see all the icons
appear, press the DONE button. The screen will go blank
- the thermostat has been reset back to the factory defaults.
Press the power button to turn the thermostat back on.
Re-calibrating the thermostat
If you need to re-calibrate the thermostat follow these
instructions:
1. Press and hold the Power button to turn the thermostat
off.
2. Select the zone to calibrate.
3. Press and hold the Power button until the temperature
appears on the screen.
4. Use the up/down buttons to set the new temperature.
4. Press DONE to accept.
5. Press the Power button once to turn the thermostat back
on.
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THE FOLLOWING SETTINGS ARE OPTIONAL AND
IN MOST CASES NEED NOT BE ADJUSTED
Optional Features Explained
Feature 01 – Temperature Format: This function allows
you to select between °C or °F.
Feature 02 - Switching Differential: This function allows
you to increase the switching differential of the thermostat.
The default is 1°C which means the thermostat will switch
the heating on 1°C below the set temperature and will turn
it off when the set temperature is achieved. With a 2°C
differential, the heating will switch on 2°C below the set
temperature and will switch off when the set temperature is
achieved.
Feature 03 - Frost Protect: You can set whether the
thermostat will maintain the frost temperature when
the thermostat display is turned off. As a default, this is
enabled.
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Feature 04 – Frost Protect Temperature: This is the
temperature maintained when the thermostat is in frost
mode. The range is 07-17°C. The default is 12°C and is
suitable for almost all applications.
Feature 05 – Output Delay: To prevent rapid switching,
an output delay can be entered. This can be set from
00-15 minutes. The default is 00 which means there is no
delay.
Feature 06 – Communication Address: This setting
is used when you have connected your thermostat to a
network system. Each thermostat on the network must have
a unique communication address. This can be set from
01-32.
Feature 07 – Temperature Up/Down Limit: This function
allows you to limit the use of the up and down temperature
arrow keys. This limit is also applicable when the thermostat
is locked and so allows you to give others limited control
over the heating system.
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