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G
Application:
Four port fixed orifice double regulating and control valve
"Cocon 4TR" for heating and cooling systems (e.g. Fan Coil
installations, chilled ceiling modules and fan convectors).
Max. working temperature:+120°C
Min. working temperature: -10°C
Max. working pressure:
10 bar
Max. differential pressure: 1 bar
Fluid:
Water, ethylene glycol water
mixtures or propylene glycol
water mixtures (max. 50 )
pH value 6.5 to 10
Models:
"Eco" test points, G
3
⁄
male thread:
4
Item no.
kvs value
kv value of the
114 78 04
0.45
114 79 04
1.0
114 80 04
1.8
Function:
The Oventrop regulating valve "Cocon 4TR" controls the
room temperature by changing the flow rate to the terminal
unit with the help of actuators whilst maintaining an almost
constant flow within the distribution circuit. Due to the reduc-
tion of the bypass flow rate to 70 , the resistance of the ter-
minal unit is taken into account. Setting of the flow rate is
carried out by use of the integrated, hidden, infinitely
adjustable presetting device with memory lock. The flow rate
can be directly read off the flow-meter "OV-DMC 2" when
connected to the two pressure test points. The terminal unit
can be isolated from the system and can be drained, filled,
bled and flushed with the help of the service tool (available
separately).
Bronze body, seals made of EPDM or PTFE, bonnet made of
brass resistant to dezincification, valve stem made of stain-
less steel with double O-ring seal.
Installation:
- The flow direction must comply with the arrow on the valve
body.
- The valve may be installed in any position (electric actua-
tors may not be installed vertically downwards).
- Do not use any lubricant or oil when installing the valve, as
these may destroy the valve seals. If this is unavoidable, all
lubricant or oil residues must be removed from the
pipework by flushing the latter.
- All installation work being completed, check all installation
points for leaks.
- Before initial operation, bleed distribution circuit and termi-
nal unit thoroughly.
Pipe connection:
- By use of suitable Oventrop compression fittings "Ofix",
tailpipe sets or inner parts (for use of flat sealing tailpipes).
Actuators:
The following Oventrop actuators (M 30 x 1.5) may be used:
Actuator
Spannung
2 point
Electro-
240
V
101 28 16/26
thermal
101 29 16/26
230 V
101 28 15/25/17
101 29 15/25
240
V
Electro-
motive
230 V
101 27 10
EIB
LON
6
Gland
fixed orifice
marking
0,61
P1
1,06
P2
2.8
P3
Control
3 point
Proportional
1012951 (0-10 V)
1012951 (0-10 V)
101 27 01 1012700 (0-10V)
101 27 03
115 60 65/66
115 70 65
1
Presetting according to calculated values:
1.1 Unscrew protection cap of the regulating stem.
1.2 Close the valve disc by turning a 4 mm spanner clock-
wise.
1.3 Then open the regulating disc by turning the 4 mm span-
ner anticlockwise according to the number of turns taken
from chart 3.
Note: To achieve an almost constant flow rate in the dis-
tribution circuit, the set flow value must be identical with
or be lower than the maximum possible flow rate in the
terminal unit.
1.4 Finally, using a screwdriver, turn the lock nut clockwise
until stop (the presetting once chosen is now repro-
ducible) and replace protection cap tightly.
2
Presetting by differential pressure measurement
(illustr. 2):
2.1 Unscrew protection cap of the regulating stem.
2.2 Carry out differential pressure measurement according
to point 3.
2.3 Now carry out presetting of the valve disc by use of the
4 mm spanner until the required flow rate is indicated on
the "OV-DMC 2".
Note: To achieve an almost constant flow rate in the dis-
tribution circuit, the set flow value must be identical with
or be lower than the maximum possible flow rate in the
terminal unit.
2.4 Finally, using a screwdriver, turn the lock nut clockwise
until stop and replace protection cap tightly.
3
Differential pressure measurement/Flow determina-
tion:
3.1 Ensure valve is in full flow conditions by either turning
the regulating cap clockwise until it stops or using the
control system to drive the valve to full flow if the actua-
tors are already fitted.
3.2 Connect flow meter "OV-DMC 2", item no. 106 91 77 or
an industry standard manometer to the pressure test
points and measure the differential pressure.
Note: The relationship between flow and differential
pressure/signal is illustrated in chart 2.
4
Isolation (illustr. 3):
4.1 Isolate ball valve.
4.2 Unscrew protection cap of the regulating stem.
4.3 Close the regulating stem by turning a 4 mm spanner
clockwise.
Note: To return the valve to its regulated setting after iso-
lation, care must be taken not to adjust the lock nut
whilst performing this operation.
5
Filling/draining/bleeding/flushing by use of service
tool, item no. 109 05 51 (illustr 4):
Note: If only the succeeding system shall be filled or
drained, the valve has to be isolated as described in
point 4.
5.1 Unscrew protection cap of the regulating stem.
5.2 Loosen regulating insert by turning a 10 mm spanner
anticlockwise (max. 1/4 turn).
5.3 Fit the service tool to the valve.
Attention: Tighten 19 mm compression nut closely (max.
10 Nm).
5.4 Fit a 6 mm square spanner to the tool and carry out fill-
ing/draining or flushing by turning it anticlockwise.
5.5 After procedure: Turn 6 mm square spanner clockwise
until it stops, remove service tool and re-tighten insert by
use of the 10 mm spanner (max. 10 Nm).
Replace protection cap tightly.
6
Filling/draining/bleeding/flushing by use of the fill
and drain tool item no. 106 17 91:
Note: If only the succeeding system shall be filled or
drained, the valve has to be isolated as described in
point 4.
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