Honeywell VT15 User manual

Honeywell EN2H-2123GE25 R0313egnahcottcejbuS
50042082-001 Rev.C
VT15
Standard Radiator Thermostat
Installation and User Instruction
1. Additional Information 4. Component parts
6. Location
The thermostat can be fitted in any orientation with the flow through
the body in either direction.
7. Head to body
Olive
Nut
Tail piece
Valve body V15EUBGB15
Thermostatic Head T9002W0GB
1. Turn head to open position (No. 5).
2. Position head so indicator is facing user.
3. Screw on head, ensuring Thermostatic head
is located fully over large hexagonal nut.
3
5
Nut
4
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3
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2
4
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3
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2
4
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3
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2
4
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3
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2
5
5. Fitting Valve Connections
Copper Connections
1. Cut copper tube to an entry depth of 10mm.
Radiator Connections
1. Screw 1/2’’ tailpiece into the tapping on radiator.
10mm
10mm
3. Functional Description
The VT15 Standard Radiator Thermostat will control the air tem-
perature 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 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 sing off, when other sources of heat are warming
the room. Such sources of heat are televisions, sunshine and
even people.
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 produsts 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
This product complies with BS6284 Part 2 and EN215.
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 you should set the TRVs to suit each room and 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 a TRV to a lower
setting will result in the room being controlled at a lower tempera-
ture, and saves energy.
TRVs need a free flow of air to sense the temperature, so 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 room thermostat should not normally have a
TRV, but, if it does, keep TRV on the maximum setting and adjust
the room thermostat as explained with the instructions.
What is a thermostatic radiator valve (TRV)?
..an explanation for householders
2. Notes and Safety instructions

VT15
London Office
Honeywell Control Systems Ltd.
Honeywell House
Arlington BusinessPark
Bracknell, Berkshire RG12 1EB
T (0 1344) 65 60 00
F (0 1344) 65 62 40
www.honeywell.com/uk
EN2H-2123GE23 R0313 50042082-001 Rev. C
March 2013
© 2013 Honeywell International Inc.
Subject to change without notice
Manufactured for and on behalf of the Environmental and Combu-
stion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A.
La Pièce 16, Switzerland or its authorized representative.
14. Servicing
Use the VA8200A001 tool for cleaning
or replacement of the valve seating
without draining the system.
16. Check list
•Consider the use of an automatic by-pass valve (e.g. Honeywell
DU145) to ensure the specification is adhered to.
•Check all connections for securing and leaks.
•Use clean pipework, free from swarf.
•Don’t allow heat from blow torch onto body.
•Don’t install the valve in a position which is subject to draughts,
sun radiation or behind curtains.
•Don’t overtighten the head/body connection, as the insulating
sleeve may become damaged.
NOTE: Ensure that the foam insert located in the thermostatic
head is in place in the head before the head is attached
to the valve body.
7. Adjustment / Setting
These temperatures are for guideance only and are based on verti-
cal mounting on the flow pipe. If the radiator thermostat is installed
in any other direction then the temperature will vary by 1°C to 2°C.
NOTE: Heating can freeze when thermostats with zero
position are set at position „0“.
closed6°C10°C 15°C 20°C23°C 26°C
012345
Frost
Position
Normal
Setting
The VT15 is adjusted by turning the top anticlockwise to increase
the temperature setting or clockwise to decrease the temperature
setting.
9. Using the “Memory Clip“
Remove “Memory Clip” and fit
into required setting Position
10.Temperature limiting
To set the upper limit:
Set to the required value and insert the right
hand stop bar with the “Memory Clip”
To set the lower limit:
Set to the required value and insert the left
hand stop bar with the “Memory Clip”
11.Temperature locking
Set to the required value and insert the
right and left hand stop bars with the
“Memory Clip”
12.Removal of temperature limits and locking
Remove stop bars with the
“Memory Clip“
3
5
3
5
3
5
3
5
3
5
3
5
Specification13.
Maximum flow temperature 130°C (266°F)
Maximum working pressure 10 Bar (150psi)
To ensure that the valve will thermostatically close the differential
pressure must not exceed 1.0 bar.
Maximum differential pressure to ensure reliable and quiet operation
is 0.2 bar.
Hystersis <1.0k
Heat conduction 0.6k
Change in differential pressure 0.4k
Closing time 20 mins
Keymark Approved EN215
15.Radiator Removal
If it is necessary to remove the radiator for decorating or other
reasons, ensure that the thermostatic head is positioned at the “0”
position. However, if the temperature in the room falls below 6°C, the
thermostat will open. If there is any possibility that the temperature in
the room will fall below 6°C, then the decorators cap supplied with
the valve should be used to isolate the flow.