Hydronic Balancing

Hydronic Balancing

„Cocon Q “

Pressure independentdynamic

controlvalve

Hydronic Balancing

„Cocon Q“

Valve for hydronic balancing and regulation

of heating and cooling systems

Main features:

1. Combination of automatic regulator and regulating valve

2. Constant, high valve authority

3. Adjustment / Control of the presetting with mounted actuator possible

4. Direct reading of presetting in l/h or m³/h

5. Good optical display of the presetting

6. Presetting is lead lockable

7. Pump setting optimization

8. Small dimensions, especially “Cocon QTZ”

9. Complete flow and size range

10. Multiple control options

11. For chilled ceiling, fan coil unit, air handling unit, convector, one-pipe-system, surface heating and cooling etc.

Hydronic BalancingCombination of automatic regulator and regulating valve

Legend

1. Diaphragm unit2. Control valve3. Balancing valve4. Handwheel5. Diaphragm6. Sleeve

“p1” is the inlet and “p3” the outlet pressure of the valve.

“p2” is the pressure actuating the diaphragm unit and maintaining the differential pressure “p2” – “p3” at a constant level.

Hydronic BalancingCombination of automatic regulator and regulating valve

Differential pressure [bar]

Flo

w r

ate

[0 –

100

%]

1. Limit the flow rate with the handwheel

2. Control the flow rate with the actuator• 2-point control• 3-point control• Proportional control (0-10V)

Flow rate [0-100%]

Val

ve s

trok

e [%

]

Linear valve characteristic when usedwith proportional actuators

Hydronic BalancingValve Authority

P1 P2

Valve Authority, a =P1

P1 + P2

Ideal is a valve authority of a = 1

Hydronic BalancingConstant and high valve authority “Cocon Q”

„p2 – p3“ is kept constant,even where high differential pressure variations („p1“ – „p3“) occur during part load conditions

Therefore, the valve authority of theregulating valve „Cocon Q“ amount to 100% (a = 1)

Hydronic BalancingAdjustment / Control of the presetting

with mounted actuator possible

Hydronic BalancingDirect reading of presetting in l/h or m³/h

„Cocon QTZ“

„Cocon QTR“ and „Cocon „QFC“

Hydronic BalancingGood optical display of the presetting

of the “Cocon QTZ” in different installation positions

Hydronic BalancingPresetting is lead lockable

Hydronic Balancing

1. Check the min. differential pressure in the manual,depending on the presetting

Pump setting optimizatione.g. for the Cocon QTZ

2. Check the differential pressure of the “Cocon Q” with the “OV-DMC2”

3. Adjust the pump setting. Thus the last “Cocon QTZ” hasa bit more (e.g. 5%) than the min. differential pressure.

Save Energy due tooptimum setting!

Hydronic BalancingSmall dimensions, especially “Cocon QTZ”

Less space required to installthe „Cocon QTZ“ with actuator

Hydronic BalancingFlow and size range

Name DIM Thread Motor/Act. Flow range

“Cocon QTZ”

DN10 Thread Optional 30-210 l/h

DN15 Thread Optional 30-210 l/h

DN15 Thread Optional 90-450 l/h

DN15 Thread Optional 150-1.050 l/h

DN20 LF Thread Optional 150-1.050 l/h

DN20 HF Thread Optional 180-1.300 l/h

DN25 Thread Optional 300-2.000 l/h

DN32 Thread Optional 600-3.600 l/h

“Cocon QTR”DN40 Thread Optional 1.500-7.500 l/h

DN50 Thread Optional 2.500-10.000 l/h

Q = FlowT = ThreadZ = dezincification resistant brass

Q = FlowT = ThreadR = Bronze

Hydronic BalancingFlow and size range

Name DIM Thread Motor/Act. Flow range

„Cocon QFC“

DN40 Flange Optional 1,5 – 7,5 m³/h

DN50 Flange Optional 2,0 – 8,0 m³/h

DN65 Flange Optional 5,0 – 22,0 m³/h

DN80 Flange Optional 7,5 – 30,0 m³/h

DN100 Flange Optional 12,5 – 50,0 m³/h

DN125 Flange Optional 27,0 – 90,0 m³/h

DN150 Flange Optional 36,0 – 150,0 m³/h

Q = FlowF = FlangeC = Cast iron

Hydronic Balancing“Cocon QTZ” Control options

Actuator Current Control2-Point 3-Point Proportional

Electro-thermal

24 V 1012816/26   1012951 (0-10V)

230 V 1012815/25    

Electro-motive

24 V   1012701 1012700 (0-10V)

230 V 1012710 1012703  

EIB     1156065/66

LON     1157065

Actuator Current Control2-Point 3-Point Proportional

Electro-thermal

24 V 1012816/26   1012951 (0-10V)

230 V 1012815/25    

Electro-motive

24 V   1012701 1012700 (0-10V)

230 V 1012710 1012703  

EIB     1156065/66

LON     1157065

Actuator Current Control2-Point 3-Point Proportional

Electro-thermal

24 V 1012816/26   1012951 (0-10V)

230 V 1012815/25    

Electro-motive

24 V   1012701 1012700 (0-10V)

230 V 1012710 1012703  

EIB     1156065/66

LON     1157065

Hydronic Balancing

• electromotive actuators for “Cocon QTR” (DN40+50)• 24V supply voltage• 0-10V control voltage or 2-point or 3-point control• 8 mm piston stroke• characteristic lines: linear, equal percentage or quadratic adjustable• installation position: vertical upright up to horizontal, not overhead

Cocon QTR

Item-No.115 80 10

Hydronic Balancing

• electromotive actuators for “Cocon QFC/QTR” (DN40-150)

– 24V supply voltage– 0-10V or 4-20 mA control voltage or 2-point or 3-point control– up to 40 mm piston stroke– characteristic lines: linear, equal percentage or quadratic adjustable– installation position: vertical upright up to horizontal, not overhead

Cocon QTR / QFC

Electromotive actuatorSqueeze connection24 V 115 80 3024 V, with spring return 115 80 31

Hydronic BalancingInstallation examples

Hydronic Balancing

for better energy efficiency …