Timeguard TRT035 - Manual (Page 4)

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 tempera-
tures 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 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 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
1. Introduction
TRT products are a cost effective
comprehensive range of thermostats and
timers designed for internal use only.
The TRT035 is a battery powered
electronic programmable room
thermostat, with 6 different temperature
periods per day, automatic summer/
winter time changeover, weekday/weekend
(5-2) or individual day (7) programming
and a frost mode. It has optimum start
turning on earlier for colder mornings and
adjustable span (difference between
on and off switching temperatures),
from 1ºC to 0.5ºC.
It is designed to be surface mounted
on the wall plate supplied.
The electrical supply must be isolated
before removing the thermostat from
the wall plate.
3. Installation
This product should be installed by a qualified
installer to current installation standards.
If in any doubt contact the Timeguard Helpline
020 8450 0515.
The TRT035 is designed to be surface mounted
on the supplied wall plate.
Always isolate the mains supply before
removing the unit from its wall plate.
Lever the battery holder out using a large flat
blade screwdriver or large coin (see Fig. 4) 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.
Isolate 230VAC mains supply.
Incoming and outgoing wires should be 1.5mm sq.
select
set
reset
SET ROOM TEMP
AM PM
Programme
access flap
Selects time,
temperature
or date to
be changed
Reset
button
Button illuminates
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
TRT035 Electronic Thermostat
2. Siting
The TRT035 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.
Contents
TRT035 thermostat
TRT035 wall plate
TRT035 instruction leaflet
2 x wall plugs
2 x screws
2 x AA batteries
Lever battery holder outwards using a large flat bladed
screwdriver (shown) or a large coin.
Left hand
side of TRT035
Battery holder
Fig. 4
Battery Holder Removal
Heating load
N
ON COM
L Fig. 5
Wiring Diagram
Remove wall plate from unit, by undoing
retaining screws (see Fig. 2), and pivoting the
bottom of the wall plate outwards. The TRT035
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 TRT033 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 terminal,
according to the wiring diagram below. Ensure
that the curved brass washers grip the conductors.
This unit is double insulated, and hence does
not need connection to earth. If earth continuity
is required, please use earth terminal on wall
plate, (see Fig. 3).
To reinstall the unit on the wall plate first ensure
the wall plate retaining screws are loosened
enough to clear the TRT035 body then engage
the top of the TRT035 onto the wall plate
retaining tabs (see Fig. 3), and push firmly
downwards and then inwards. There will be
some resistance from the terminals. Once in
place, secure with the retaining screws.
Restore mains to the unit after checking all
system wiring is complete.
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
TRT035 Electronic Thermostat
ON OFF Ost 0.5 1.
0
SP
AN
5.0
7
PROGRAM
Jumper shown in
optimum start on
position
Wall plate retaining screws
(at bottom of TRT035)
Jumper shown in
Span 0.5ºC
position
Jumper shown in
weekday/weekend
(5-2) position
Fig. 2
Rear View of TRT035
Alternative
fixing holes
Retaining tab
Terminal for
maintaining
continuity of
earth
OFF terminal
(OFF)
Switched live
terminal (SL)
Live terminal (L)
Fig. 3
Back Plate Removed
Mount the wall plate in this configuration only
Note:
Check boiler
instructions
before
connecting.