oventrop Uni XH User manual

Co te ts:
Page 1 General information
Valve installation
Thermostat installation
Figures and symbols on the thermostat
Page 2 Temperature setting
Limiting and locking of a setting
Airing of the rooms
Cleaning
Page 3 Replacement of the gland nut
Checklist for faults
Supplier addresses
Ge eral i formatio
Thermostatic radiator valves control the room temperature
by modifying the flow of hot water through the radiator.
Often, there is only a minimum requirement for heat (espe-
cially in transition periods) and so the thermostats only
open the valves a small amount. Consequently flow noises
could occur due to high differential pressures. To prevent
these noises, measures should be taken to influence the dif-
ferential pressure; for example by using adjustable circulati-
on pumps, manually adjustable bypass pipes, differential
pressure regulators or differential pressure relief valves.
It is recommended to adjust the temperature of the supply
pipe to the outside temperature, preferably by using a wea-
ther guided temperature controller.
For further i formatio see tech ical data sheets
“Thermostats” a d “Thermostatic radiator valves”.
Valve i stallatio
The radiator valve should be installed so that the thermost-
at is in a horizontal position and a good circulation of air is
guaranteed. If this is not possible, a thermostat with remote
sensor or with remote control should be used. It is most
important that capillaries are not kinked or flattened.
The radiator valve is installed in the supply pipe to the
radiator, with the flow in the direction of the arrow.
When using compression fittings, the thread of the fitting
and the compression ring are slightly oiled at works. Do not
use any additional lubricant! Do not allow the oil or lubri-
cant to come into contact with the EPDM valve disc. EPDM
is not oil resistant.
When using the compression fittings for thermostatic valves
with female threaded connection (only possible for sizes
DN 10, DN 15 and DN 20), the “Ofix” compression fittings
are to be used in order to guarantee a perfect sealing func-
tion between the pipework and the thermostatic valve.
It is important that the pipes are cut to the correct length at
a right angle to the centre line. The ends of the pipe must
be free of burrs and undamaged.
When using thin walled and very soft pipes, reinforcing
sleeves have to be used. The reinforcing sleeve supports
the pipe and provides the strength to enable the necessary
compression. Reinforcing sleeves cannot be used on pipe
with welded seams. The recommendations of the pipe
manufacturers have to be observed in any case. If neces-
sary, a practical “test” has to be carried out.
The special fittings “Cofit S” may be used for the Oventrop
composition pipe “Copipe”. The installation instructions
supplied with the fittings must be observed.
All radiators and pipework must be flushed thoroughly to
prevent any problems caused by welding beads and dirt.
When converting old heating systems, it is recommended
that a plastic strainer should be fitted at the inlet port of all
radiator valves.
Do not fit the thermostat until all building work has been
completed. During construction period, the valve can be
operated with the screwed cap. The screwed cap is not to
be used for permanent shut-off of the valve against system
pressure (e.g. while radiator is removed). In this case pro-
tect the valve outlet with a metal cap.
Thermostat i stallatio
To ensure an easy installation, the handgrip must be ope-
ned to the maximum position (figure “5”). In this position,
the collar nut (“Uni X ”) or the squeeze connection (“Uni
XD”) of the thermostat may be easily fitted to the valve
body.
Turn the thermostat so that the indicator mark is facing up.
old in this position and tighten collar nut without using
excessive force.
Compression fitting
before tightening.
Remove pipe insulation
far enough.
Pipe shape after tigh-
tening.
Reinforcing ring
Compression nut
Compres -
sion ring
Collar nut “Uni X ” or
squeeze connection ”Uni XD”
“Lower limiting clip”
“Upper limiting clip”
Indicator mark (with tactile set-
ting device in form of a ridge)
Minor graduation
Graduation figure
Direction “warmer”
Basic setting “3”, about 20 °C
(with tactile setting device in
form of a point)
Direction “colder”
andgrip
Memory disc
✽= Frost protection symbol
in this position the valve opens automatically when
room temperature drops below 7 °C.
1 = about 12 °C
2 = about 16 °C
3 = about 20 °C
4 = about 24 °C
5 = about 28 °C
The minor graduations
between the figures 2 - 4
represent a change of room
temperature of about. 1 °C.
}
Figures a d symbols o the thermostat
Valves, controls + systems
Thermostatic radiator valves
Thermostats “Uni X ” and “Uni XD”
Installation instructions
EN
1

To limit the upper temperature range,
turn the thermostat until the required
max. room temperature, e.g. figure “3”
plus 2 graduation lines (about 22°C)
points to the indicator mark - illustr. 1.
Now pull the right limiting clip out of the
parking position and push into the limit-
ing position - illustr. 2 (twist thermostat
slightly if required).
To limit the lower temperature range,
turn the thermostat until the required
min. temperature, e.g. figure “2” (about
16°C) is in line with the indicator mark.
Now pull the left limiting clip out of the
parking position and push into the limit-
ing position - illustr. 3.
The thermostat is now limited to the
chosen temperature range.
The limitation can be cancelled by turning the handgrip to
the corresponding temperature (opposite the indicator
mark). The limiting clips are pulled back into the parking
position.
Locki g the temperature setti g
If a setting shall be locked, e.g. “3”
(about 20°C), to avoid tampering, this
can be done by pulling both limiting
clips (left and right clip) out of the par-
king position into the limiting position at
the same time - illustr. 4.
The locking can be cancelled at any time by pulling both
limiting clips and placing back into the parking position.
The thermostat can be locked on any graduation line, any
graduation figure and the frost protection symbol.
Airi g of the rooms
As the air is quickly used during the heating periods, the
rooms should be ventilated by opening the windows widely
for a short time.
Before airing, turn the thermostat to the frost protection
symbol “✽”. Once airing has been completed, turn the ther-
mostat to the initial position. When using the limitation: Turn
to the left until stop.
Clea i g
The thermostat must only be cleaned with mild detergents
mixed with warm water. Scouring agents, solvents and
aggressive detergents may damage the surface of the
thermostat. The thermostat must not be cleaned in a dish-
washer.
Temperature setti g
Setting of your required temperature
Turn the handgrip of the thermostat until the corresponding
graduation figure or a graduation line is in line with the indi-
cator mark. The control ranges from graduation figure “0”
past the frost protection symbol “✽” to graduation figure “5”.
The minor graduations between the figures “2” and “4” cor-
respond to a room temperature modification of 1°C.
Examples:
about 28°C
about 24°C
about 20°C
about 16°C
about 12°C
about 7°C
Swimming pool (for reasons of ener-
gy saving, the control range between
“4” and “5” should be avoided)
Bathroom
Living room, dining room
Basic setting
Children’s room
Entrance hall, hallway
obby room, bedroom
Cellar
Frost protection
Isolation of the radiator
The indicated temperatures can only be achieved if the
complete heating system has been designed correctly.
Temperature setback
The room temperature should be set back during the night
or a longer absence in order to save energy. The thermostat
has to be set to a lower value, e.g. from figure “3” to figure
“2”. The temperature should also be set back if rooms are
not occupied for several hours.
Marki g of a setti g
The Oventrop thermostat features a memo disk which
allows restoring the set temperature after having turned the
handgrip.
Turn the memo disk with the help of a
coin or similar until the required tempe-
rature points to the notch on the memo
disk.
The notch, temperature setting and indi-
cator mark should be in line.
aving turned the handgrip, the set
temperature can be restored as follows:
Turn the handgrip until the notch on the
memo disk and the indicator mark are in
line again.
Limiti g the co trol ra ge
The thermostat is equipped with two limiting clips for indivi-
dually setting your comfort temperature. The thermostat can
be limited on any graduation line, graduation figure or the
frost protection symbol.
Example: The control range shall be limited between about
16°C (figure “2”) and about 22°C (figure “3” plus 2 gradua-
tion lines).
illustr. 4
illustr. 1
illustr. 2
illustr. 3
2

Subject to technical modification without notice.
101136586 02/2017
For an overview of our global presence visit
www.oventrop.com.
The thermostatic radiator valve does not function
13. The thermostat is not screwed tightly onto the valve.
14. The capillary of the remote sensor or the remote control
was kinked or flattened. Use a new thermostat and
install carefully.
15. If a strainer is used, has it become blocked? Remove
valve, flush pipe thoroughly, clean strainer and re-
install.
16. Air is reducing circulation in the radiator. Vent the radia-
tor.
17. Air is interfering with circulation in the heating system.
Fit an automatic airvent in a suitable position.
18. The valve seat was distorted, e.g. as a result of impro-
per assembly in vice. Fit a new valve.
19. The thermostat was readjusted due to unauthorised
tampering. Recalibrate thermostat.
The valve cannot be shut off
20. In most cases this is due to dirt particles on the valve
disc, e.g. welding beads or rust particles. These
particles can often be removed by repeatedly working
the valve stem. To do this, the thermostat must be
removed first.
The valve insert must be replaced if the valve disc was
damaged. The valve insert can be replaced without drai-
ning the system with the help of the “Demo-Bloc” tool
specially developed for this purpose. If this is not
successful, the valve insert must be removed after
having drained the system and the residue has to be
removed from the valve or the valve has to be replaced.
21. The frost protection responds. The crystal symbol ✽
corresponds to a room temperature of about 7°C. The
valve will therefore open as soon as the temperature
drops below this level, e.g. when ventilating the room.
22. The thermostat is defective and must be replaced. First
test whether this is due to dirt or unauthorised tampering
of the calibration. Screw on a new thermostat and send
the old one back to the supplier for replacement. If still
under guarantee, it will be repaired or replaced free of
charge.
The valve leaks
23. The gland nut is loose. Tighten it.
24. The O-ring seal of the gland nut is damaged. Replace
the gland nut. The system does not have to be drained
to do this (see above).
25. The valve insert is loose. Tighten. If necessary, use a
new insert (compare point 20).
The valve rattles
26. Supply and return pipe are reversed.
Flow noises occur
27. Can the pump head (differential pressure) be reduced?
Please contact the manufacturer in case of further ques-
tions.
Replaceme t of the gla d ut
Remove thermostat from the valve. Unscrew the gland nut
with a 14 mm key. Water will not escape as the valve is
provided with an additional seal. Screw on new gland nut
(item no. 1017501) and tighten with the key. Replace the
thermostat.
Note:
Not for valves “A (as from 2013), AV9, ADV9, CV9, RFV9, E,
AQ, RFQ, EQ and RF (as from 2014)”.
Disposal
To protect the sensor liqiud from escaping, the thermostat
must not be destroyed when disposed of.
The thermostat contains hazardous waste!
Dismounted/defective thermostats can be returned to the
manufacturer Oventrop.
They will be disposed of professionally.
Check list for faults
The desired room temperature is not reached or maintained
11. The flow temperature is set too low.
12. The circulation pump is not switched on.
13. The circulation pump or the flow temperature is con-
trolled by a separate electric room thermostat.
14. The pump output is set too low.
15. The flow direction of the pump is reversed.
16. The heating pipe is throttled back or shut off.
17. With gravity fed heating systems, a circulation pump
must be installed subsequently if necessary. Gravity
systems are very sensitive to the presence of air in the
system.
18. The radiator is covered by curtains, panelling etc. Use a
thermostat with remote sensor.
19. Temperature at the thermostat differs widely from the
ambient temperature due to poor siting. Use a thermo-
stat with remote sensor.
10. The remote sensor is badly sited. The best height is
about 1 m above the floor level.
11. The radiator selected is too small for the size of the
room.
12. If the required temperature is only reached at a higher
setting of the thermostat, recalibrate the thermostat (if
desired).
Gland nut
OVENTROP Gmb & Co. KG
Paul-Oventrop-Straße 1
D-59939 Olsberg
Telefon [phone]
Telefax [phone]
E-Mail [e-mail]
Internet www.oventrop.com
3