Honeywell
y
Subject to change
EN2H-2123GE25 R1108
50036790
-001
VT15
Standard Radiator Thermostat
Installation and User Instruction
1. Additional Information
2. Notes and Safety instructions
Whilst Honeywell takes all reasonable practical steps to design and
manufacture its products to comply with the requirements of the Health
and Safety at Work Act 1974 all products must be properly used and
purchasers are reminded that their obligations under the Act are to
ensure that the installation and operation of such products at a place of
work should be safe and without risk to health.
Honeywell reserves the right at any time and without notice to change
any product or any information contained in this publication.
3. Functional Description
The VT15 Standard Radiator Thermostat will control the air tempera-
ture of the room in which they are situated from a range of 6°C to
26°C.You can choose the temperature that exactly suits your needs.
Different rooms can be controlled at different temperatures, depending
on their use. For example, the bathroom can be warmer or cooler than
other rooms where the VT15 is installed and so on.
The VT15 will also save you money by turning the radiator down, or clo-
sing off, when other sources of heat are warming the room. Such
sources of heat are televisions, sunshine and even people.
4. Component parts
1. Thermostatic Head
2. Valve Body
3. Tailpiece
4. Olive
5. Nut
5. Installation
5.1. Fitting - valve connections
1. Fit the connection fittings to the valve.
2. Cut copper tube to entry depth of 10 mm.
6. Location
The thermostat can be fitted in any orientation with the flow through the
body in either direction.
7. Body to head connection
Initially adjust the thermostat to No. 5
then hold the thermostat so that the
position indicator on the thermostatic
head is facing the user.
Screw the thermostatic head to the
valve body, ensuring that the thermo-
static head is located fully over the large
hexagonal nut. A slight downward force
will be necessary to do this.
What is a thermostatic radiator valve (TRV)?
..an explanation for householders
TRVs sense the air temperature around them and
regulate the flow of water through the radiator which they are fitted
to. They do not control the boiler.
TRVs sense the air temperature around them and regulate the flow
of water through the radiator which they are fitted to. They do not
control the boiler.
They should be set at a level that gives you the room temperature
you want. These settings may have to be different in each room,
and should set the TRVs to suit each room an then leave them to
do their job.
Turning a TRV to a higher setting will not make the room heat up
any faster. How quickly the room heats up depends on the boiler
size and setting, and the radiator size. Turning the TRV to a lower
setting will result in the room beiing controlled at a lower tempera-
ture, and saves energy.
TRVs need a free flow of air to sense the temperature, sp they must
not be covered by curtains or blocked by furniture.
TRVs cannot turn off the boiler when the whole house is warm. To
do that, you will need a room thermostat as well. The radiator in the
room with the romm thermostat should normally have a TRV, but, if
it does, keep the TRV on the maximum setting and adjust the room
thermostat as explained with the instructions.
3
5
1
3
2
4
5
10mm
10mm
3
5
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