Belimo ZoneTight TM QCV 2-way characterised control valves and 3-way change-over ball valves. Table of Contents. Notes for project planning

Transcription

1 Belimo ZoneTight TM QCV -way characterised control valves and -way change-over ball valves Table of Contents Introduction Type key Product features Adjustable angle of rotation k v setting Adaption Operating range Selection and dimensioning Selection table for -way characterised control valves Calculation diagram for -way characterised control valves Table of dimensions for -way change-over ball valves -way zone valve-qcv en 0.0 Subject to changes /

2 Notes for project planning Introduction, type key and product features Introduction The valve-actuator combination QCV (= Quick Compact Valve) is a Belimo ZoneTight TM Room & Zone Solution. The QCV, comprised of the -way characterised control valves and the -way change-over ball valves of the nominal sizes DN and DN 0 and the CQ... actuators, have impressive properties: Tight-sealing ball valve prevents circulation losses Minimum power consumption during operation and in standby mode Compact overall structure Lightning-fast manually adjustable flow rates with the -way characterised control valves Automatic adaption to the set k v value Rotary valves protected against soiling and seizing thanks to form-fit valve-actuator connection Actuator installed without any tools Compatible with V, 0 V, open-close/-point, modulating control and MP-Bus. Type code Valve C Q - J Actuator CQ C K A - SR - T C = Compact, internal thread = Internal thread, -way characterised control valves = Internal thread, -way change-over ball valves = External thread, -way characterised control valves = External thread, -way change-over ball valves = DN 0 = DN 0 Q = Actuator installed without any tools H = Flow rate value range... m /h J = Flow rate value range... m /h K = Flow rate value range.7... m /h F = Flow rate range 0... m /h CQ = Compact, low torque C = No details: running time 7 s C = Running time s D = Running time s K = Actuator with emergency control function (SuperCap) = AC/DC V / 0 = AC 0 V A = New actuator generation SR = No details: open-close, -point SR = Modulating control, operating range...0 V SZ = Modulating control, operating range V MPL = Belimo MP-Bus light T = Version with clamp Product features Adjustable angle of rotation The rotary actuator can be changed in. increments with the use of a clip. This is used to set the k v value (maximum flow rate of the valve). k v setting Remove end stop clip and put into desired position (without end stop clip k vs value of the valve ). Each time the kv setting is changed using the end stop clip, with the modulating actuators an adaption has to be triggered. N Adaption Push button Press button: Switches on angle of rotation adaption, followed by standard mode No N Adaption When the supply voltage is switched on for the first time, i.e. at the time of commissioning, the CQA-SR(-T), CQA-SZ(-T) and CQA-MPL(-T) actuators with modulating control carry out an adaption. This also has to be done when the end stop clip is adjusted. / -way zone valve-qcv en 0.0 Subject to changes

3 Product features Product features Position number CQ.. actuators N ) ) CQ-F k v [m /h] CQ-J k v [m /h] C0Q-K k v [m /h] CQ-J k v [m /h] C0Q-K k v [m /h] ) without end stop clip ) factory setting Operating range The ball valve has an operating range in its direction of opening of...90 as a result of its design, which means that the air tight range with the ball valve is at. A hysteresis of also is obtained as a result of the design, which means that the ball valve is not air bubble tight in the direction of closing until it reaches. At the smallest k v value that can be set (Position number ), the angle of rotation of the ball valve is still.. This means that the actuator adapts to the angle 0..., of which is the air tight range, meaning % at this flow value setting. If the actuator has the operating range V (for 0... ), then the effective operating range of the valve is between. and 0 V. The running time of the actuator is 7 s / 90, i.e. this results in a running time of 0 s for the. at the Position number setting. The operating ranges of the valves with the respective position numbers are: Modulating control actuators CQA-SR(-T) Operating range DC...0 V CQA-SZ(-T) Operating range DC V Position number CQ.. actuator Completely open position at [ ] Running time [s] Combination operating range in the direction of opening [V] Number of control steps Combination operating range in the direction of opening [V] Number of control steps N ) ) without end stop clip Calculation of actuator control steps: Operating range (e.g V) 0 V. V =. V Response sensitivity: 7 mv = 0.07 V Actuator control steps:. V / 0.07 V = 7 steps Opening limit angle (tight not tight): approx. in the direction of opening Hysteresis combination:... Closing limit angle (not tight tight): approx. in closing direction Running time of actuators: 7 s / 90 Recommendation for the smallest k v values (Position numbers and ): The QCV should not be used with a P controller (persistent control deviation) The QCV should be used only in a closed control loop with PI or PID control In case of doubt, use the QCV only as an open-close unit For special applications, the 0 V version of the open-close, -point actuator can be used with a running time of s (CQC0A) or s (CQD0A). -way zone valve-qcv en 0.0 Subject to changes /

4 Selection and dimensioning Selection table for -way characterised control valves Permissible working pressure p s Max. differential pressure p max Medium temperature 00 kpa 0 kpa...90 C Valve Actuator CQ-F CQ-J C0Q-K CQ-J C0Q-K Position No. CQ.. actuator CQA-SR(-T) CQA-SZ(-T) CQA(-T) CQ0A(-T) CQA-MPL(-T) CQKA(-O) CQKA-SR(-O) CQC0A CQD0A Valve design Valve characteristic curve k v k v k v k v k v kv H N ) DN 0 0 internal thread ISO 7- - external thread - ISO - ) without end stop clip / -way zone valve-qcv en 0.0 Subject to changes

5 Selection and dimensioning Calculation diagram for -way characterised control valves DN Application These characterised control valves are used in closed cold and hot water systems for modulating water-side control of air handling units and heating systems. Media Medium temperatures Cold and hot water, water with glycol up to max. 0% vol C p v00 [bar] [m /h] DN kv [l/s] pmax p v00 [kpa] p max Maximum permissible differential pressure for long service life across control path A AB, with reference to the whole opening range. p v00 Differential pressure for ball valve opened up to k v value setting 00 Nominal flow rate with p v00 Formula k v k v [m /h] 00 [m /h] p v00 [kpa] k v = 00 p v way zone valve-qcv en 0.0 Subject to changes /

6 Selection and dimensioning Calculation diagram for -way characterised control valves DN 0 Application These characterised control valves are used in closed cold and hot water systems for modulating water-side control of air handling units and heating systems. Media Cold and hot water, water with glycol up to max. 0% vol. Medium temperatures...90 C p v00 [bar] DN kv [m /h] [l/s] 0. pmax p v00 [kpa] p max Maximum permissible differential pressure for long service life across control path A AB, with reference to the whole opening range. p v00 Differential pressure for ball valve opened up to k v value setting 00 Nominal flow rate with p v00 Formula k v k v = k v [m /h] 00 [m /h] p v00 [kpa] 00 p v00 00 Table of dimensions for -way change-over ball valves Differential pressure p max [kpa] Flow rate 00 [m /h] k vs [m /h] DN [mm] connection CQ-H internal thread C0Q-J internal thread CQ-H external thread C0Q-J external thread Formula 00 k vs [m /h] 00 [m /h] p v00 [kpa] 00 = k vs pv00 00 / -way zone valve-qcv en 0.0 Subject to changes

7 -way zone valve-qcv en 0.0 Subject to changes 7 /

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