Wireless 7 Day
Programmable
Room Thermostat
Cat. No. TRT037
Operating & Installation Instructions
Receiver
Transmitter
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.
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.
®
What is a programmable room thermostat?
…an explanation for householders
select
set
reset
S ET ROOM TEMP
AM PM
1. Introduction
TRT products are a cost effective
comprehensive range of thermostats and
controllers designed for internal use only.
The TRT037 is a battery powered wireless
electronic programmable room thermostat,
with 6 different temperature periods per day,
automatic summer/winter time changeover,
5 day plus 2 or individual (7) day programming,
and a frost mode. There is also the option
of optimum start and adjustable span,
from 1ºC to 0.5ºC.
The TRT037 comes in two parts – a thermostat/
transmitter which is battery powered and
totally wire-free as well as a receiver which
connects into the heating system. This eases
the installation in two ways – there is no
need to bury cable runs to the thermostat/
transmitter and the receiver can be mounted
close to the boiler and other system components.
The two parts are designed to be surface
mounted on their supplied wall plates.
The electrical supply must be isolated before
attempting to install the receiver unit.
select
set
reset
SET ROOM TEMP
AM PM
Programme
access flap
Selects time, temperature
or date to be changed and
is used with button to
enable communication
between the transmitter
and receiver
Reset
button
Button and
screen
illuminate
when pressed
and for 5 seconds
after release
Initiates programme
setting sequence and in
conjunction with the select
button initiates time and
date setting sequence
Border
illuminates
when +/- buttons
are pressed
and for 5 seconds
after release
Fig. 1a
TRT037 Wireless Programmable
Room Thermostat/Transmitter
Learn
A/M
OFF ON
OST
0.5 1.0
SPAN
5-2 7
PROGRAM
Optimum start
jumper
Learn button
enabling
communication
between the
transmitter
and receiver
also controlling
output in
manual
Learn/manual
light
Wall plate retaining screws
(at bottom of TRT037)
Span
jumper
Program
jumper
Automatic/
Manual
mode
button
Output
on light
Fig. 3
Fig. 2
TRT037 Receiver Front View
TRT037 Transmitter Rear View
select
set
reset
SET ROOM TEMP
AM PM
Day of
week
Operates
frost
protection
Time of day
(programme
time during
setting)
Shows when
heat is
demanded
Flashing
when frost
protection
is on
Temperature
override
Flashing symbol,
battery change
required
Selects
current set
temperature
and changes
date, time and
temperature
Room temperature
display
(set temperature
displayed flashing
during setting)
Fig. 1
TRT037 Wireless Programmable
Room Thermostat/Transmitter
Contents
TRT037 thermostat
TRT037 wall plate
TRT037 instruction leaflet
4 x wall plugs
4 x screws
2 x AA batteries
TRT037 receiver
TRT037 receiver
wall plate
Lever battery holder outwards using
a large flat bladed screwdriver (shown)
or a large coin.
Left hand
side of TRT037
Battery holder
Fig. 6
Battery Holder Removal
Alternative
fixing holes
Alternative
fixing holes
Retaining tab
Terminal for
maintaining
continuity
of earth
Fig. 4
Receiver Back Plate Removed
Mount the wall plate in this configuration only
Alternative
fixing holes
Retaining tab
Fig. 5
Transmitter Back Plate Removed
Mount the wall plate in this configuration only
COM NC NO N L
2. Siting
The TRT037 transmitter must be sited where
it would not be influenced by heat sources,
for example, above a radiator or television
or refrigerator/freezer, or in direct sunlight or
subject to draughts. The product requires air
circulation, so do not position above or below
shelving or other wall mounted obstacles.
It should be mounted approximately
1.5m above floor level.
The TRT037 receiver should be mounted close
to the items it will be controlling i.e. boiler,
control valves and pump. It should be mounted
in a position where its control buttons and
indicator lights can be easily accessed.
To reinstall the unit on the wall plate first ensure
the wall plate retaining screws are loosened
enough to clear the TRT037 transmitter body then
engage the top of the TRT037 transmitter onto
the wall plate retaining tabs (see Fig. 5), and
push firmly downwards and then inwards.
Once in place, secure with the retaining screws.
Receiver
Isolate 230VAC mains supply. Incoming and outgoing
wires should be 1.5 sq mm.
Remove wall plate from unit, by undoing retaining
screws (see Fig. 4), and pivoting the bottom of the
wall plate outwards. The TRT037 receiver can then
be lifted off.
Thread the incoming wires through the hole in the
wall plate, and fix wall plate securely to the wall,
using screws (and wall plugs if necessary) provided.
The screws which secure the TRT037 receiver to
the wall plate should point downwards.
Allow sufficient excess cable to wire up the unit,
but not too much to make it difficult to close the
unit onto the wall plate.
Connect the conductors to the relevant terminals,
according to the wiring diagram below (Fig. 7).
Ensure that the curved brass washers grip the
conductors.
The TRT037 transmitter and receiver are
designed to be surface mounted on their
supplied wall plates.
Always isolate the mains supply before
removing the receiver from its wall plate.
Read these instructions in conjunction
with boiler instructions
Transmitter
Lever the battery holder out using a large flat
blade screwdriver or large coin (see Fig. 6) and
then pull out fully.
Insert the 2 x AA alkaline batteries supplied into
the battery holder maintaining the correct polarity
as shown in the base of the battery holder.
Push the battery holder back into place until
it clicks shut.
Remove wall plate from unit, by undoing
retaining screws (see Fig. 5), and pivoting the
bottom of the wall plate outwards. The TRT037
transmitter can then be lifted off.
Fix wall plate securely to the wall, using screws
(and wall plugs if necessary) provided. The screws
which secure the TRT037 transmitter to the wall
plate should point downwards.
3. Installation
Product should be installed by a qualified installer
to current installation standards. If in any doubt
contact the Timeguard Helpline 020 8450 0515.
Fig. 7
Receiver Wiring Diagram
This unit is double insulated, and hence
does not need connection to the earth.
If earth continuity is required, please use the
earth terminal on the wall plate, (see Fig. 4).
To reinstall the unit on the wall plate first ensure
the wall plate retaining screws are loosened
enough to clear the TRT037 receiver body then
engage the top of the TRT037 receiver onto the
wall plate retaining tabs (see Fig. 4), and push
firmly downwards and then inwards. There will
be some resistance from the terminals. Once in
place, secure with the retaining screws.
Finally check that the system wiring is complete
and correct.
4. Operation
Initially it is important to get the two parts
(transmitter and receiver) talking to each other.
This is best carried out by two people, one at each
of the separate locations.
Press reset on the transmitter and at the receiver connect
the mains supply to the unit. Both indicator lights (learn/
manual and output on the receiver) will come on for
around 3 seconds and then go out. Press and hold the
learn button on the receiver for around 10 seconds until
the blue learn/manual light starts flashing.
At the transmitter press and hold the select button for
1 second, keeping it held down, press and hold the
‘ ’ button so they are both held down together.
Hold them both down until the flashing blue learn/
manual light on the receiver goes out. The transmitter
and receiver are now communicating. This can be
confirmed by carrying out the following:- at the
transmitter press the + button until the set
temperature (identified by momentarily pressing the
+ or - button) is higher than the room temperature
(normally displayed). After a short delay the output
on light on the receiver comes on.
Now press the - button at the transmitter until the
set temperature is lower than the room temperature
and after a short delay the output light will turn off.
This proves the communication is fully functional.
There is a manual facility available at the receiver.
If the auto/manual (A/M) button is pressed the blue
learn/manual light will come on indicating the
receiver is in manual mode. The receiver output can
now be turned on and off using the learn button.
Programming
Decide whether weekday/weekend (5–2) or
individual (7) day programming is required and
move the appropriate jumper on the rear of
the TRT037 transmitter.
The temperature span (difference between on and
off temperatures) can be adjusted between 1ºC and
0.5ºC using a jumper found on the rear of the unit.
Optimum start (switching on earlier on colder
mornings) can also be turned on or off using a
jumper on the rear of the unit.
It is important to make these decisions first,
as after any change of jumper position, reset needs
to be pressed, which will return the unit to default
time and programme.
Pressing any button illuminates the screen automatically.
During time/date and programme setting if a button
is not pressed within 15 seconds the display will
revert to the start of the sequence.
Setting date and time of day
Open programme access flap and press reset, using a
pen or similar object. All of the screen segments will
show briefly, and then the current room temperature
will be displayed.
To programme the date and time of day, open
programme access flap, and simultaneously press
and hold both the select and set buttons for
3 seconds. The year will flash.
Use the + and - button to set the correct year.
Press select to move on to programming the month
(shown to the left), and then again to programme
the day. Press select again to programme the hours
(am/pm), and again to programme the minutes
(each time using the +/- button to make the
change). Press set to return to operating mode.
If at any time a button is not pressed for 15
seconds, the unit will return to operating mode.
Programming temperature periods for
7 days option
Notes
1) There are no off periods with this controller.
The programming sequence is:-
Start time, temperature, second start time,
second temperature and so on.
Setting temperature to 10ºC is as close to off
as can be achieved (and for most situations
will be off unless the weather is very cold).
2) If you do not want a higher temperature period
in the middle of the day adjust the temperature
for this period downward to match those of the
proceeding and subsequent period temperatures.
N
COM NC NO N L
L
Connections to boiler
Check boiler instructions
before connecting
current room temperature 5 seconds after the last
button press. The illumination will also turn off
after 5 seconds. In manual mode, there will be a
hand symbol displayed on the screen. The new
temperature will remain valid until the next
programmed period starts.
A burner symbol is displayed when temperature
is below desired value, indicating that the
thermostat is calling for heat from the boiler.
Review set temperature
The set temperature can be reviewed at any time,
by a single press of the + or - button. 5 seconds after
this single button push, the unit will show the
current room temperature, and the screen
illumination will turn off.
Frost protection
Frost protection reduces the set temperature to 5ºC.
Frost protection is activated by holding down the
frost protection button for 3 seconds. When in frost
mode, the frost symbol will flash on the display.
The set temperature buttons remain non-functional
during frost mode. The unit will remain in frost
mode until the frost button is held down for a
further 3 seconds.
Battery replacement
When the battery needs replacing, a battery symbol
will flash on the display.
Sleep mode
The unit can be put into sleep mode by simultaneously
holding down the + and - buttons for 3 seconds.
Pressing any button will exit sleep mode. In sleep
mode, all outputs are suspended and the screen is
blank (useful for longer periods when the house
is unoccupied and frost protection is not required).
To clean use a dry cloth only. Do not use any
liquid cleaners.
5. Specifications
Current rating: 3 (1) A
Voltage: 230V, 50Hz
Switch type: Single pole, change-over (SPCO)
Volt Free Contact
Operating
temperature
range: 0ºC to 50ºC
Set temperature
range: 10ºC to 35ºC adjustable in
0.5ºC steps
Complies with: BS EN 60730
Span: 1ºC or 0.5ºC
Micro
disconnection: Type 1.B control action
Batteries: 2 x AA alkaline
3) The TRT037 comes with a factory installed
(default) programme for both 5–2 and 7 day
options which you use or modify as you wish.
Just pressing the reset button brings this
programme into operation.
The default programme for every day is
as follows:-
6:00 AM 21ºC
8:00 AM 17ºC
12:00 PM 21ºC
2:00 PM 17ºC
4:00 PM 21ºC
10:00 PM 17ºC
For both 5–2 and 7 day options.
To programme the temperature periods, press
the set button. Mon will flash. To programme
Mondays time/temperature periods press select
button. Alternatively use the + and - buttons to
change the day, and then select to continue. The
time will then flash. This is the start time for the first
period. Press + or - to set the hour for the start time
for period 1. Press select to move to the minutes.
Use the + and - to set the minutes. Press select to set
the temperature for this period. Use the + or - keys
to set the desired temperature. Press select again
to programme the next time period. There are
6 time periods per day.
Once the 6 periods for Monday are programmed,
Press set button, and Monday will start to flash.
Use the + and - button to change the day to Tuesday,
and then use select to program Tuesdays time
periods and temperatures. For 7 day programming,
this will need to be done for all 7 days. If set is pressed
twice, the unit will return to operating mode.
Omitting Days
Omitting a day can be achieved by selecting
10ºC for every time period for that day
(all times and temperatures must be entered).
The heating will not turn on unless the room
temperature falls below 10ºC (50ºF).
Programming temperature periods for
5–2 days option
For 5–2 day mode, time periods and temperatures
will need to be programmed for M–F and then
for S–S. i.e.: only 2 sets of times need to be
programmed, not 7 (individual) sets of times.
Temperature override
In operating mode, the temperature set for the
current period can be overridden. To adjust the set
temperature, press the + or - button once. The screen
will illuminate blue while button is pressed.
Use + and - buttons to set desired temperature.
If the + or - button is held down, the display will
advance rapidly. Once the desired temperature
is set, the unit should revert to displaying the
For a product brochure please contact:
Timeguard Ltd. Victory Park, 400 Edgware Road,
London NW2 6ND Tel: 020-8452-1112
or email csc@timeguard.com
A Group company
67-058-328 (Iss.2)
HELPLINE
020-8450-0515
or email helpline@timeguard.com
For assistance with the product please contact:-
3 Year Guarantee
In the unlikely event of this product failing due to defective material or
manufacture within 3 years of the first date of purchase, please return it
to your supplier in the first year for replacement free of charge.
For years 2 and 3 or difficulty in the first year, please telephone the
helpline 020 8450 0515. Note: a proof of purchase is required
in all cases. For all eligible replacements (where agreed by
Timeguard Ltd) the customer is responsible for all shipping/postage
charges for sending replacements outside the UK. All shipping costs
are to be paid in advance before a replacement is sent.
Fig. 7
Receiver Wiring Diagram
This unit is double insulated, and hence
does not need connection to the earth.
If earth continuity is required, please use the
earth terminal on the wall plate, (see Fig. 4).
To reinstall the unit on the wall plate first ensure
the wall plate retaining screws are loosened
enough to clear the TRT037 receiver body then
engage the top of the TRT037 receiver onto the
wall plate retaining tabs (see Fig. 4), and push
firmly downwards and then inwards. There will
be some resistance from the terminals. Once in
place, secure with the retaining screws.
Finally check that the system wiring is complete
and correct.
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