 Fox
and Co can replace all your standard radiator valves with
TRV's, thus enabling you to control the temperature in all
areas of your home or office.
Your central
heating system has been designed to cope with the coldest
weather conditions likely to be experienced in your area.
However, for much of the heating season the outside air
temperature will be above these extreme conditions and your
heating system is then able to supply more heat than you
need and unwanted overheating may occur. To ensure
that your home is kept comfortably warm with minimised
running costs, it is essential that an effective control
system is fitted. Such a system can be achieved using
trv's.
 When
selecting a TRV check that they are full flow valves as some
have a higher restriction, The picture on the right shows
the difference, the valve on the left only has a 8mm
diameter hole for the water to pass through, this can cause
large radiators not to heat up correctly and can make the
system noisy as well as making the system less efficient.
Both these TRV's have the wax capsule head removed showing
the pin that is pushed down by the head
Please
note the manufactures do claim that these high restriction
valves are made to the correct BS standard (BS
7478) and will Pass up to 4KW of heat on a Small bore (15mm)
system. Fox & Co prefer to install full flow TRV's which
allow more water flow through the boiler and system
This also shows the actual size
difference between 15mm and 8 mm which is why Small Bore
(15mm) systems will always be better than Micro-Bore (8mm)
as far grater volumes of water can pass through 15mm making
the boiler work more efficiently making it more reliable
If you have a one pipe system
then you must always use a full flow valve as each radiator
is fed only by gravity so definitely needs a full flow
valve
The way to set TRV's up is to
set each valve mid way. After the heating has been on for
about 2 hours, go into each room and if the air is too warm
then turn the valve down 1 number or 1/2 a number, or if too
cool up 1 number. Keep doing this until you find the right
setting for each room. Touching the radiator will only tell
you if it is on or not at that moment in time. once you
find to correct temperature then each timer the heating is
put on from cold, the radiator will come on at full and as
the pre determined air temperature is reached the TRV will
turn the water flow off letting the radiator cool down, The
TRV will then control the temperature of the air by opening
and closing as necessary |
