7
When using compression fittings for thermostatic
valves with female threaded connection (only
possible for the sizes DN 10, 15, 20), the “Ofix”
compression fittings must be used in order to
guarantee a perfect sealing function between the
pipework and the thermostatic valve.
Item no. 10271../10281..
NOTICE
1. Cut pipes to the required length at a right angle to
the centre line.
2. When using thin walled or very soft copper pipes,
insert reinforcing sleeves (accessories) into the pipe
end before mounting the compression fitting. The
reinforcing sleeves provide the strength to enable
the necessary compression of a tight pipe/valve
connection (see illustr. 2).
untightened
3. Reinforcing sleeves cannot be used on pipes with
welded seams.
The recommendations of the pipe manufacturer
must be observed in this case.
Check if the function of the compression fitting is
guaranteed.
Do not use any additional grease or oil during
installation as these may cause damage to the
sealant inside the valve.
The spare parts are lubricated at works.
NOTICE
4. Mount the thermostatic valve into the supply pipe
to the radiator. Please make sure that the thermostat
will be in a horizontal position and that a good
circulation of air will be guaranteed.
The direction of the arrow on the thermostatic valve
and the direction of flow of the supply pipe must
be observed to avoid rattling noises at the thermo-
static valve.
NOTICE
6.1.2 Pipework installation for composition pipe
The thermostatic valve may also be installed into a
pipework with composition pipe. In this case, the
adequate connection system of the pipe manufacturer
has to be used. When using the Oventrop composition
pipe “Copipe”, the pipe has to be connected to the
thermostatic valves by use of the “Cofit” fittings.
When using compression fittings for thermostatic
valves with female threaded connection (only
possible for size DN 15) the compression fittings
“Cofit S“ (see illustr. 3) must be used in order to
guarantee a perfect sealing function between the
pipework and the thermostatic valve.
Item no. 1507354/55
NOTICE
The installation instructions supplied with the
composition pipes and the compression fittings must
be observed.
tightened
untightened
Illustr. 3 Compression fitting “Cofit S”
6.2 Initial operation
6.2.1 Advice regarding protection cap
The thermostatic valve is supplied with a plastic
protection cap. The cap protects the valve stem and
can be used to operate the valve during the
construction period.
The protection cap must not be used for permanent
shut-off of the valve against system pressure (e.g.
while radiator is removed). The high restoring force
of the valve stem will cause damage to the
protection cap. Protect the valve outlet with a metal
cap.
Oventrop cap, item no. 10669..
NOTICE
tightened
Illustr. 2 Compression fitting “Ofix”
6.2.2 Flushing the pipework
1. Remove the protection cap of the thermostatic valve
to open the valve completely.
Except for valve “ADV9”: Starting from the shut po-
sition, open the valve by about 1 turn with the help
of the protection cap.
2. Set valve to the highest presetting, i.e. “9”.
3. Flush pipework thoroughly to avoid malfunctions
caused by impurities.
4. Once flushing has been completed, restore initial
presetting.
5. Refit the protection cap or mount the thermostat.
6.2.3 Presetting of the valve
Set presetting to the required value by use of a
13 mm spanner or the special key (item no. 1183962).
The required setting must be in line with the marking
(see illustr. 4). The presetting is infinitely adjustable
between “1” and “9” and can be modified whilst the
system is in operation; water will not escape.
