http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/RSS.ashxDanfoss Heating PagesTue, 12 Jun 2012 10:54:21 +0200http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=1http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=1Data sheet Automatic balancing valves ASV ASV-P DN15-40 ASV-PV DN15-40 ASV-PV DN50 ASV-PV DN65-100 ASV-BD DN15-50 ASV-I DN15-50 ASV-M DN15-50 Description / Application ASV balancing valves are used for dynamic hydronic balance in heating and cooling systems. Dynamic balancing means: permanent balancing from 0 to 100 % load by controlling the pressure in systems with variable f low. At partial loads, when the f low is decreased by the control valve, pressure limitation is still performed and consequently performing dynamic balancing. By using ASV you avoid using complex and time consuming commissioning methods. Dynamic balancing of the system in all loads helps you to save energy and improves climate comfort and control. F low limitation By using combination of pressure controller ASV and settable terminal’s unit valve, f low limitation is established. F low limitation for each terminal unit prevents underf lows on distant units and overf lows on others thus allows efficient pumping. Lower noise emission Differential pressure limitation provides the pressure over the control valve not to increase at partial loads thus noise emission will be lower. (This is the reason why DIN 18380 requires control of differential pressure by partial load.) No balancing method needed F low limitation is achieved by adjusting each hydronic loop separately without inf luencing others, which consequently results in one time adjusting process. No special balancing method is needed so commisioning cost can be saved. Control valve authority Controlling differential pressure over the control valve means that authority is high – which allows an accurate and stable control as well as energy saving. Zone balancing By installing the ASV sets you can divide the piping system in pressure independent zones. This allows a gradual connection of zones to the main in new constructions or at renovation without using an additional balancing method. There is no need to perform a new commissioning every time the system is changed because the hydronic balance is done automatically. ASV-P valves have fixed setting (10 kPa). ASV-PV valves are settable in different ranges: • 5-25 kPa setting is mostly used for radiator application, • 20-40 kPa setting is used for radiator, fan coil, chilled beam and f lat station applications, • 35-75 kPa setting is used for f lat station and fan coil, chilled beam application, • 60-100 kPa setting is used for large terminal unit application (air handling units, fan coils, etc.). Using ASV valves it is possible to optimize pump head while independent pressure zones allow to keep authority of terminal unit’s valve high. DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 12012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=2http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=2Data sheet Description / Application (continuous) Automatic balancing valves ASV ASV balancing valves are designed to guarantee high quality of the automatic balancing by: - a pressure released cone, - an adapted membrane for every valve dimension which provide constant quality performance for all sizes, - spring with linear characteristic that makes setting required Δp easy. A 90° angle between all service features (shutoff, draining, setting, measuring) allows an easy access under any installing condition. All the above-mentioned features and functions are realized in small build-in dimensions so it is easy to install ASV even in very limited space. ASV valves are performing pressure control not only at design conditions (100 % load) but also at all partial loads (thus fulfilling the requirements of DIN 18380 norms). By controlling pressure at a partial load one can prevent noise problems on thermostatic radiator valves which often occur in unbalanced systems. ASV valves (DN 15-40) are packaged in styropore (EPS) which can be used for insulation at temperatures up to 80 °C. An insulation cap is available as an accessory for insulation at higher temperatures (up to 120 °C). ASV valves in dimensions DN 15-40 are supplied with an internal or external thread while DN 50 is supplied with external thread only. If an external thread is chosen, a threaded or weld nipple can be supplied as an accessory. Dimensions DN 65-100 are supplied as f langed valves. ASV balancing valves have integrated service functions such as shut-off and draining. ASV-PV can be equipped with nipple for f low measuring. In that case measuring nipples need to be ordered separately and mounted on the valve as follows: • on top of drain cock (DN 15-50), • on the f lange connection before the valve is filled with water (DN 65-100). ASV-PV valves are to be mounted in return pipe, in combination with partner valves mounted in f low pipe. As a partner valve ASV-M/I/BD are recommended for dimensions DN 15 to DN 50 and MSV-F2 for dimensions DN 65 to DN 100. There are two basic configurations when using ASV partner valves (ASV-BD, ASV-I, ASV-M, MSV-F2): - partner valve outside the control loop (Fig. 1). Recommended configuration: it results in best performance since whole controlled pressure range is available to the riser. Flow limitation is done on each terminal unit in the riser (for example, RA-N with presetting on radiator, etc). DN 15 to DN 50: ASV-M or ASV-BD DN 65 to DN 100: MSV-F2, by connecting impulse tube to down-flow measuring nipple. - partner valve inside control loop (Fig. 2). Offers flow limitation on the riser however part of the controlled pressure range is used by pressure drop on partner valve (∆pi). It is recommended when flow limitation on each terminal units is not possible. DN 15 to DN 50: ASV-I or ASV-BD. DN 65 to DN 100: MSV-F2, by connecting impulse tube to up-flow measuring nipple. Fig.1 SettingofASV-PV=Δpriser Fig.2 SettingofASV-PV=∆priser+∆pi ASV-BD can be used outside or inside control loop by choice of which measuring nipple is open. To be used outside control loop, blue measuring nipple needs to be open. In this position, flow verification can be done (default position). To be used inside control loop, red measuring nipple needs to be open. In this position, flow verification & flow verification can be done. 2 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=3http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=3Data sheet Description / Application (continuous) Automatic balancing valves ASV Fig.3 ASVinriser/typicalheatingapplication(generalexample) ASV valves are to be used in radiator heating systems to control the differential pressure in risers. To limit the f low for every radiator, the thermostatic radiator valve with pre-setting facilities (feature) is used together with a constant pressure provided by the ASV, thus providing balanced heat distribution. Alternatively the f low in the riser can be limited by using setting function of the ASV-I. Controlling differential pressure over the riser means also that the valve authority over the thermostatic radiator valves is high – which allows an accurate and stable temperature control and saves energy. Fig.4 ASVinmanifoldforfloorheatingsystem ASV valves are to be used in f loor heating systems. To limit the f low for every loop valves with an integrated f low limiting or presetting function should be used together with a constant pressure provided by an ASV-PV valve. Alternatively the f low for the whole manifold can be limited by using the setting function of the ASV-I or ASV-BD. ASV-PV valves can control the differential pressure in several ranges if different pressure is needed. Due to its small dimensions the ASV automatic balancing valves are easy to install in a wall mounted box for f loor heating manifolds. DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 32012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=4http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=4Data sheet Description / Application (continuous) Automatic balancing valves ASV Fig.5 ASVwithfancoil The ASV valves are to be used in systems with fan coils, induction devices and air-heaters to secure an automatic hydronic balance by the means of differential pressure control in branches or at every coil. Constant differential pressure in combination with pre-set control valves i.e. ASV-I or ASV-BD limits the f low. Fig.6 Flatstation ASV automatic balancing valves can be used also in other applications. For example ASV can be used to prevent noise problems at the thermostatic radiator valves in small systems by controlling the differential pressure. ASV can be used in every application you need a small differential pressure controller, for example like small f loor manifolds or f lat stations. In buildings equipped with f lat stations ASV valves can be used to provide secure automatic balance by the means of differential pressure control in risers/ zones. In f lat stations, pressure conditions change when sanitary water heating is taking place in comaparison to the situation when only heating is needed. By using ASV-PV valves the differential pressure is controlled also in those conditions. Constant differential pressure in combination with pre-set control valves i.e. ASV-I or ASV-BD limits the f low. 4 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=5http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=5Data sheet Sizing Automatic balancing valves ASV Thread F lange Q min ≤ Q ≤ Q 10 kPa Fig.7 ColumndiagramforsizingASVvalvesat∆pv=10kPa.Fordifferent∆pvvaluesusediagramAandBinAppendix. We recommend to size the diameter of ASV-P/PV valves by using Fig 7. Maximum f low rates are based on 10 kPa differential pressure over the valve which allows effcient pumping and saves energy. After ASV-P/PV valves have been sized the same dimension of partner valve ASV-BD / ASV-I / ASV-M / MSV-F2 valve should be selected. Example: Given: Pipe f low 200 l/h, pipes DN 15 Solution: Horizontal line intersects the column for the valve DN 15 which can therefore be selected as required size. For detailed sizing see examples on pages 12 and 13. For different ∆pv (differential pressure over the valve) see diagrams in Appendix A. Connection between valves size and pipe size Kv values per particular dimension were designed to cover f low range according to VDI 2073 with water velocity of up 0.8 m/s, at differential pressure of 10 kPa over the valve. As long as the water velocity in the pipe is between 0.3 and 0.8 m/s dimension of the valve should be equal to pipe dimension. This rule is derived out of the fact that Kv values per particular dimension were designed to cover f low range according to VDI 2073 at differential pressure of 10 kPa over the valve. DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 52012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=6http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=6Data sheet Ordering Automatic balancing valves ASV ASV-P balancing valve, inclusive in the box: 1.5 m impulse tube (G 1/16 A) and drain cock (G 3/4 A) Constant differential pressure 10 kPa Type DN 15 20 25 32 40 kVS (m3/h) 1.6 2.5 4.0 6.3 10 Internal thread (ISO 7/1) Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ Code No. 003L7621 003L7622 003L7623 003L7624 003L7625 Type External thread (ISO 228/1) G¾A G1A G 1¼ A G 1½ A G 1¾ A Code No. 003L7626 003L7627 003L7628 003L7629 003L7630 ASV-PV balancing valve, inclusive in the box: 1.5 m impulse tube (G 1/16 A) and drain cock (G 3/4 A) Type DN 15 20 25 32 40 15 20 25 32 40 32 40 15 20 25 32 40 kVS (m3/h) 1.6 2.5 4.0 6.3 10.0 1.6 2.5 4.0 6.3 10.0 6.3 10.0 1.6 2.5 4.0 6.3 10.0 External thread ISO 228/1 Internal thread ISO 7/1 Connection Rp 1/2 Rp 3/4 Rp 1 Rp 11/4 Rp 11/2 Rp 1/2 Rp 3/4 Rp 1 Rp 11/4 Rp 11/2 Rp 11/4 Rp 11/2 G 3/4 A G1A G 11/4 A G 11/2 A G 13/4 A 5-25 35-75 20-40 5-25 ∆p setting range (kPa) Code No. 003L7601 003L7602 003L7603 003L7604 003L7605 003L7611 003L7612 003L7613 003L7614 003L7615 003L7616 003L7617 003L7606 003L7607 003L7608 003L7609 003L7610 ASV-PV balancing valve, inclusive in the box: 2.5 m impulse tube (G 1/16 A) drain cock (G 3/4 A) and adapter 003L8151 Type DN kVS (m3/h) Connection ∆p setting range (kPa) 5-25 G 2 1/2 20-40 35-75 60-100 Code No. 003Z0611 003Z0621 003Z0631 003Z0641 50 20 External thread ISO 228/1 ASV-PV balancing valve, inclusive in the box: 2.5 m impulse tube (G 1/16 A), adapter ASV large 003Z0691 and 003L8151 Type DN 65 80 100 65 80 100 65 80 100 kVS (m3/h) 30 48 76.0 30 48 76.0 30 48 76.0 60-100 F lange EN 1092-2 35-75 Connection ∆p setting range (kPa) 20-40 Code No. 003Z0623 003Z0624 003Z0625 003Z0633 003Z0634 003Z0635 003Z0643 003Z0644 003Z0645 6 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=7http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=7Data sheet Ordering (continuous) Automatic balancing valves ASV ASV-BD shut-off valve, multifunctional partner valve (shut-off, rotating measuring station) Type DN 15 20 25 32 40 50 kVS (m3/h) 3.0 6.0 9.5 18 26 40 Internal thread (ISO 7/1) Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ Rp 2 Code No. 003Z4041 003Z4042 003Z4043 003Z4044 003Z4045 003Z4046 ASV-M shut-off valve, without measuring nipples Type DN 15 20 25 32 40 50 kVS (m3/h) 1.6 2.5 4.0 6.3 10 16 Internal thread (ISO 7/1) Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ Code No. 003L7691 003L7692 003L7693 003L7694 003L7695 Type External thread (ISO 228/1) G¾A G1A G 1¼ A G 1½ A G 1¾ A G 2¼ A Code No. 003L7696 003L7697 003L7698 003L7699 003L7700 003L7702 ASV-I adjustment valve, inclusive two measuring nipples Type DN 15 20 25 32 40 50 kVS (m3/h) 1.6 2.5 4.0 6.3 10 16 Internal thread (ISO 7/1) Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ Code No. 003L7641 003L7642 003L7643 003L7644 003L7645 Type External thread (ISO 228/1) G¾A G1A G 1¼ A G 1½ A G 1¾ A G 2¼ A Code No. 003L7646 003L7647 003L7648 003L7649 003L7650 003L7652 Accessories and spare parts Description Comments/connection DN 15 Shut-off knob for ASV-I (black) DN 20 DN 25 DN 32/DN 40/DN 50 DN 15 Shut-off knob for ASV-M (black) DN 20 DN 25 DN 32/DN 40/DN 50 Differential pressure measuring connector For drain cock Code No. 003L8155 003L8156 003L8157 003L8158 003L8146 003L8147 003L8148 003L8149 003L8143 Drain cock Two measuring nipples and one locking plate 3 mm measuring nipples, 2 pcs Operating handle Impulse tube, with O-rings Adapter large ASV 1) For ASV-PV (DN 15-50) For ASV-I and ASV-M, rectus type For ASV-BD 4) For ASV-BD 4) 1.5 m 2.5 m 5m G ¼-R ¼; G 1/16 G 1/16-R ¼ G 1/16-4/16-20 UNF-2B 2.90 × 1.78 003L8141 003L8145 003Z4662 003Z4652 003L8152 003Z0690 003L8153 003Z0691 003L8151 003L8176 003L8175 Nipple for connecting impulse tube 2) Nipple for connecting impulse tube on other valves (US standard) O-ring for impulse tube 3) Plug for impulse tube connection ASV-I/M 3) G 1/16 A 003L8174 1) RecommendedforusewithMSV-F2,connectedtomeasuringhole,itallowsconnectionofimpulsetubefromASVwhileretaining measurementfunctionality. 2) Recommended forusewithMSV-F2,connectedtomeasuringhole.Canalsobeusedforconnectingimpulsetubedirectlyonthepipe. 3) Setof10pieces. 4) forwholerangeofASV-BDaccessoriespleaserefertoLeno™ MSV-BDdatasheet. DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 72012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=8http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=8Data sheet Technical data Automatic balancing valves ASV Type Nominal diameter Max. pressure Test pressure Differential pressure over the valve Temperature Material of parts in contact with water Valve body Cone (ASV-P/PV) Ball Membrane / O-rings 1) ASV-I/M/P/PV DN bar kPa °C 10-150 1) –20 … 120 Brass DZR brass EPDM 15-40 16 (PN 16) 25 10-250 2) –10 … 120 Grey cast iron EN-GJL-250 (GG 25) Stainless steel 50-100 ASV-BD 15-50 20 30 10-250 –20 … 120 DZR brass Brass / chromium plated Spring Stainless steel Pleasenotethatthemaximumadmissibledifferentialpressureacrossthevalve150kPashouldalsonotbeexceededatpartialload. 2) Pleasenotethatthemaximumadmissibledifferentialpressureacrossthevalve250kPashouldalsonotbeexceededatpartialload. Design 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Shut-off knob Shut-off spindle O-ring Reference spring Impulse tube connection Diaphragm element Control diaphragm Pressure-relieved valve cone Valve body Seat The ASV-P is designed to maintain constant differential pressure across a riser. Via an internal connection and together with the reference spring, pressure in the return pipe acts on the underside of the control diaphragm (7) while via an impulse tube (5), pressure in the f low pipe acts on the top of the diaphragm. In this way the balancing valve maintains a fixed differential pressure of 10 kPa. Fig.8 ASV-P 1. Shut-off knob 2. Differential pressure setting spindle 3. O-ring 4. Reference spring 5. Impulse tube connection 6. Diaphragm element 7. Control diaphragm 8. Pressure-relieved valve cone 9. Valve body 10. Seat n (turns) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5-25 (kPa) 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 20-40 (kPa) 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 35-75 (kPa) 1) 75 73 71 69 67 65 63 61 59 57 55 53 51 49 47 45 43 41 39 37 35 DN 15 20 25 32 40 2.5 3 4 5 5 Factory presetting ∆p setting range (kPa) 5-25 20-40 35-75 kPa 10 30 60 1) DN32/40only Fig.9 ASV-PV(DN15-40) 8 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=9http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=9Data sheet Design(continuous) 1. Shut-off knob 2. Differential pressure setting spindle 3. O-ring 4. Reference spring 5. Impulse tube connection 6. Diaphragm element 7. Control diaphragm 8. Pressure-relieved valve cone 9. Valve body 10. Seat Automatic balancing valves ASV n (turns) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5-25 (kPa) 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 20-40 (kPa) 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 35-75 (kPa) 75 73 71 69 67 65 63 61 59 57 55 53 51 49 47 45 43 41 39 37 35 60-100 (kPa) 100 98 96 94 92 90 88 86 84 82 80 78 76 74 72 70 68 66 64 62 60 Factory presetting ∆p setting range (kPa) 5-25 20-40 35-75 60-100 kPa 10 30 60 80 DN 50 5 Fig.10 ASV-PV(DN50) ASV-PV is designed to maintain a constant set differential pressure. Via an internal connection and together with the reference spring (4), pressure in the return pipe acts on the underside of the control diaphragm (7) while via an impulse tube (5), pressure in the f low pipe acts on the top of the diaphragm. In this way the balancing valve maintains adjusted differential pressure. The ASV-PV valves are sold in four different ∆p setting ranges. The valves are factory–set to a defined value as described on Factory presseting table on Fig. 9, 10 and 11. Use the following procedure to set the desired differential presure: the setting on ASV-PV can be changed by turning the setting spindle (2). Turning the spindle clockwise increases the setting; turning it counter clockwise reduces the setting. If the setting is not known, turn the spindle fully clockwise. With this the setting on ASV-PV is at maximum value within setting range. Now turn the spindle a number of times (n) as described in Fig. 9, 10 or 11 until the required differential pressure setting is obtained. DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 92012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=10http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=10Data sheet Design (continuous) 1. Shut-off knob 2. Differential pressure setting spindle 3. O-ring 4. F lat gasket 5. Reference spring 6. Impulse tube connection 7. Diaphragm element 8. Control diaphragm 9. Pressure-relieved valve cone 10. Valve body 11. Seat 12. Measuring holes-plugged 13. Air-vent Automatic balancing valves ASV 65 DN 80 100 13 13 13 Factory presetting ∆p setting range (kPa) 20-40 35-75 60-100 20-40 (kPa) 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 35-75 (kPa) 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 kPa 30 60 80 60-100 (kPa) 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 20-40 (kPa) 35-75 (kPa) 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 60-100 (kPa) 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 n (turns) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 n (turns) 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Fig.11 10 ASV-PV(DN65-100) DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/20122012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=11http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=11Data sheet Design (continuous) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Valve body Ball Ball seat Supporting screw Throttle bush Closing bush Valve top Spindle head Spindle Rotation lock Drain cock Handle Rotating measuring station Measuring nipple Impulse tube connection Automatic balancing valves ASV Fig.11a ASV-BDDN15-50 Partner valves ASV-BD/I/M are to be used together with the automatic balancing valves ASV-PV/P to control differential pressure in the risers. ASV-BD is a combined presetting and shut off valve with a range of unique features: • high kv values for small pressure losses • partner valve position inside or outside control loop (see page 2 for details), chooseable even after the valve is already installed and under pressure. • Numeric presetting scale, visible from multiple angles • Easy locking of presetting • Rotating measuring station with built-in measuring nipples for 3 mm needles • Built-in drain cock with separate f low/return draining • Removable hand wheel for easy mounting. • Open-closed colour indicator. Impulse tube connection The impulse line must be connected to impulse tube connection piece (15). In working position, one of measuring nipples needs to be open while other closed. There are two possible configurations, with partner valve inside or outside control loop. It can be chosen by impulse tube connection side: - Partner valve outside controlled loop: opened outlet measuring nipple (blue marking). ASV-BD needs to be set to max setting (fully open. F low verification is possible. - Partner valve inside controlled loop: opened inlet measuring nipple (red marking). F low limitation with flow verification is possible. Note: Default positionisopenedinletmeasuringnipple(blue marking). F low limitation Use the following procedure: 1. When valve is open the lock is released. Allen key can also be used. 2. The handle pops up and the required f low setting may be set. 4. Lock the setting by pressing the handle until click. 5. If needed, f low can be measured using PFM 4000 or other brand of measuring instrument. F low verification (in case ASV-BD is used outside controlled loop) Use the following procedure: 1. ASV-BD setting is at maximum value. 2. F low can be measured using PFM 4000 or other brand of measuring instrument. 3. If pressure drop across the valve is too low for reliable f low measurement, ASV-BD needs to be set to lower setting to achieve high enough pressure drop across the valve. 4. After flow measurement, return the setting to maximum value and lock it by pressing the handle until click. Draining Use the following procedure to drain: 1. Close opened measuring nipple. 2. Remove the impulse tube. 3. Remove the adapter. Make sure that drain cock is fixed with spanner when adapter is removed. 4. Blue nipple opens the outlet while red measuring nipple opens the inlet. Make sure not to use more than max. 3 turns. Drain tap and nipples can rotate to any position. Note: when draining, always keep same or higher static pressure on upper part of ASV-P/PV membrane. Therefore, always drain from return pipe first and remove impulse tube only after return pipe is empty. If draining is done from flow pipe first, membrane can be damaged. 11 DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/20122012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=12http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=12Data sheet Design (continuous) 1. 2. 3. 4. 5. 6. 7. 8. Shut-off knob Shut-off spindle Setting spindle Scale disc O-rings Valve cone Seat Valve body Automatic balancing valves ASV 15 DN 20 25 32/40/50 2.5 3 4 5 Port A Fig.12 ASV-I Port B ASV-I incorporates a double cone able to give maximum stroke limitation, thus achieving f low limitation. It also incorporates shut off function. ASV-I is equipped with the nipples for the f low measurement and a connection for the ASV-P/ ASV-PV impulse tube. Use the following procedure to limit the f low: turn the valve knob fully counter clockwise to open the valve. The mark on the knob will now be opposite »0« on the scale. Turn the valve knob clockwise to the required setting (e.g. for setting 2.2 the knob must be rotated two full turns and then forward to »2« on the scale. Hold the knob to keep the setting (e.g. 2.2) and using a hexagon socket key turn the spindle fully counter clockwise (until a stop can be felt). Turn the valve knob fully counter clockwise so that the mark on the knob is opposite »0« on the scale. The valve is now open as many turns from the closed position (2.2) as indicated by the conversion from required f low. To annul the setting, turn the hexagon socket key fully clockwise (until a stop can be felt). Remember, at the same time the knob must be held on its »0« setting. To read presetting valve has to be closed. 1. 2. 3. 4. 5. 6. Shut-off knob Shut-off spindle O-rings Valve cone Seat Valve body ASV-M is designed to shut-off the pipe f low. ASV-M has a connection for an impulse tube to ASV-P/ASV-PV. It can be equipped with nipples for f low measuring (which are sold separately as accessories). Port A Fig.13 ASV-M Port B 12 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=13http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=13Data sheet Sizing-design examples Automatic balancing valves ASV Δpa = Δpm + Δpr + Δpv Δpv Δpm Δpr Δpa Fig.14 PressuredropacrossASV-P/PV PressuredropacrossASV-Mvalve Necessarypressurefortheriser Availablepressurefortheriser 1. Example Given: Radiator system with thermostatic radiator valves with pre-setting function. Desired f low for the riser (Q): .1,500 l/h Minimal available pressure for that riser (Δpa) . 70 kPa Estimated pressure drop over the riser at the desired f low (Δpr) . 20 kPa Wanted: - Valve type - Valve size Since radiator valves has pre-setting function ASV-M is selected. Since desired pressure drop over the riser is 20 kPa ASV-PV is selected. ASV-PV should control 20 kPa pressure over the riser that means that 50 kPa out of 70 will be disposed over two valves. Δpv + Δpm = Δpa−Δpr = 70−20 = 50 kPa We presume that dimension DN 25 is the right dimension for this example (please mind that both valves should be of the same dimension). As ASV-M DN 25 is to be fully open pressure drop is calculated by following equation: ⎛Q⎞ ⎛ 1.5 ⎞ ∆p m = ⎜ ⎟ = ⎜ ⎟ = 0.14bar = 14 kPa ⎝ Kv ⎠ ⎝ 4.0 ⎠ or by reading from diagram in Appendix A, fig. E as follows: Draw horizontal line from 1.5 m3/h (~1,500 l/h) trough the line that depicts dimension DN 25. From the intersection draw vertical line to read that pressure drop is 14 kPa. Pressure drop over ASV-PV valve is therefore: Δpv= (Δpa-Δpr)−Δpm = 50 kPa−14 kPa = 36 kPa as can be read from diagram in Appendix A, Fig. A. 2 2 2. Example Correcting the f low with the differential pressure setting. Given: Measured f low for the riser Q1.1,500 l/h ASV-PV valve’s setting Δpr . 20 kPa Wanted: New valves’ setting to increase the f low for 10%, Q2 = 1650 l/h. SettingontheASV-PVvalve: When needed setting of the control pressure can be adjusted to particular value (ASV-PV from 5 to 25 kPa or 20 to 40 kPa). With increasing/decreasing the setting it is possible to adjust f low trough the riser, terminal or similar. (100 % increase of control pressure will increase the f low for 41 %) ⎛ Q2 p 2 = p1 × ⎜ ⎜Q ⎝ 1 2 ⎞ 1650 ⎞ ⎟ = 0.20 × ⎛ = 24kPa ⎜ ⎟ ⎟ ⎝ 1500 ⎠ ⎠ 2 If we increase the setting to 24 kPa f low will be increased to 10 % to 1,650 l/h. DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 132012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=14http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=14Data sheet Sizing-design examples (continuous) Automatic balancing valves ASV Δpa = Δpi + Δpr + Δpv Δpv PressuredropacrossASV-PVvalve Δpi PressuredropacrossASV-Ivalve Δpo PressuredropintheriserincludingASV-I Δpa Availablepressurefortheriser Δpr PressuredropintheriserexcludingASV-I Fig.15 Δpa = Δpi + Δpr + Δpv Δpv PressuredropacrossASV-PVvalve Δpi PressuredropacrossMSV-F2 Δpo PressuredropacrosstheriserincludingMSV-F2 Δpa Pressuredropacrosstheriser Δpr PressuredropintheriserexcludingMSV-F2 Fig.16 3. Example Limiting the f low with ASV-I valve Given: Desired f low for the branch (Q): . 880 l/h ASV-PV and ASV-I (DN 25) Setting on the ASV-PV valve (Δpo) . 10 kPa Estimated pressure drop over the riser at desired f low (Δpr) . 4 kPa Required: Setting of the ASV-I valve to achieve desired f low Solution: When needed setting of the ASV-I can be adjusted to perform f low limitation function. ASV-I namely is inside the control loop of the pressure controller therefore adjusting ASV-I would result in adjusting f low limitation. (General rule is that 100 % increase of kv value will increase the f low for 100%) kv = Q Δp v = 0.880 0.06 = 3.6 m 3 h 4. Example F lat station application Given: No. of f lat stations connected to one riser .5 Heating power of each station. 15 kW Sanitary water heating on each station . 35 kW Simultaneous factor (source TU Dresden) .0.407 Desired f low for branch (Q): .6,400 l/h Minimal available pressure for that riser (∆pa) . 80 kPa Estimated pressure drop over the riser at the desired f low (∆po) . 50 kPa Wanted: - Valve type - Valve size. For maximum f low calculation in the riser, simultaneous factor is used since sanitary water consumption is temporary occurrence and is not used simultaneous in all apartments-f lats. Since water f low through heat exchanger while heating sanitary water is not controlled, maximum f low needs to be limited as well. Since desired pressure drop over the riser is 50 kPa ASV-PV with range between 0.35 and 0.75 bar (35 and 75 kPa) is selected. Since 80 kPa is available for the riser, ∆pv shall be 30 kPa. ∆pv = ∆pa – ∆po = 80 – 50 = 30 kPa kv = Q Δp v = 6.4 0.3 = 11.7m3 /h The result can be read as well from diagram in Appendix A, Fig. D. At desired f low pressure drop over the entire branch is 4 kPa. Without using ASV-I f low trough the branch at fully open control valve will be 58 % higher thus causing overf low (4 kPa allow 880 l/h, while 10 kPa allow 1390 l/h). With adjusting the ASV-I DN 25 on value 90 % k v value (3.6 m3/h) we will limit the f low to 880 l/h as desired. This value is obtained by following calculation: Δpi = Δpo − Δpr = 10 − 4 = 6 kPa. For 6.400 l/h DN 50 size valve is selected as calculated above or by reading from diagram in Appendix A, fig. B. If needed, to limit the f low through the riser the valve ASV-I or MSV-F2 to be used. 14 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=15http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=15Data sheet Measurement of f low and differential pressure Automatic balancing valves ASV ASV-BD (needle type) and ASV-I (rectus type) are equipped with two measuring nipples so that the differential pressure across the valve can be measured using Danfoss measuring equipment or any other measuring device. Using the pressure drop graph for ASV-BD (Appendix A, fig C) or ASV-I (Appendix A, fig D), the actual differential pressure across a valve can be converted to actual f low. For rectus type measuring nipples: when the measuring equipment quick couplings are connected, the measuring nipples can be opened by giving them a half-turn counter clockwise with an 8 mm open-ended spanner. After measurement, the nipples must be closed again by turning them back clockwise and disconnecting the quick-couplings. Note: Whenmeasuringsizedflow,allradiator valvesmustbefullyopen(nominalflow). Measurement of differential pressure (Δpr) across riser. Fit a measuring connector (Danfoss code no. 003L8143) on the ASV-P/PV balancing valve drain cock (DN 15-50) or threaded connection closer to the terminal unit (TU). Measurements must be taken between the measuring nipple at ASV-BD/ASV-I/ASV-M/MSV-F2 valve port B and the measuring connector on the ASV-P/PV. Installation ASV-P, ASV-PV must be installed in the return pipe with f low in the direction of the arrow on thevalve body. Partner valves (ASV-M/I/BD, MSV--F2 must be installed in the f low pipe, with f low in the direction of the arrow on the valve body. The impulse tube must be installed between partner valve and ASV-P/PV. The impulse tube must be f lushed through before installation. ASV-PV and ASV-I/BD must in addition be installed as determined by installation conditions. Pressure testing Max. test pressure . 25 bar When pressure testing the system you must secure that both sides of the membrane have the same static pressure to prevent damage of the pressure controller. That means the impulse tube must be connected and any needle valves must be open. If ASV-P/PV DN 15-50 is installed in combination with ASV-M both valves must be open or closed (both valves must be in the same position!). If ASV-P/PV DN 15-50 is installed in combination with ASV-I /ASV-BD both valves must be open. During this operation (closing or opening the valves) please make sure that there is never lower pressure on upper side of the membrane to prevent damaging it . Starting During system start – opening the shut-off on ASV-PV and partner valve-please secure that there is the same static pressure on both sides or higher pressure on upper side of the membrane. If filling is done by opening ASV-PV and partner valve, please make sure there is a pressure on the upper side of the membrane by opening partner valve first before ASV-PV is opened. DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 152012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=16http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=16Data sheet Dimensions Automatic balancing valves ASV ASV-P DN 15 20 25 32 40 L1 65 75 85 95 100 L2 120 136 155 172 206 L3 139 159 169 179 184 H1 mm 82 103 132 165 170 15 18 23 29 31 28 35 45 55 55 61 76 98 122 122 27 32 41 50 55 H2 D1 D2 S a ISO 7/1 Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ b ISO 228/1 G¾A G1A G 1¼ A G 1½ A G 1¾ A G¾A c ASV-PV DN 15 20 25 32 40 1) L1 65 75 85 95 100 L2 120 136 155 172 206 L3 139 159 169 179 184 H1 mm 102 128 163 204 245 1) 209 250 1) H2 15 18 23 29 31 D1 28 35 45 55 55 D2 61 76 98 122 122 S 27 32 41 50 55 a ISO 7/1 Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ b ISO 228/1 G¾A G1A G 1¼ A G 1½ A G 1¾ A c G¾A 35-75kPasettingrange Fig.17 16 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=17http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=17Data sheet Dimensions (continuous) Automatic balancing valves ASV ASV-PV DN ∆p setting range kPa 5-25 50 20-40 35-75 60-10 130 244 234 273 L1 L2 L3 H1 mm 232 61 55 133 G 21/2 G 3/4 A H2 D1 D2 b c ISO 228/1 ASV-PV DN 65 80 100 L1 290 310 347 H1 385 390 446 H2 mm 93 100 112 68 68 68 205 218 248 145 160 180 D1 D2 D3 Fig.18 DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 172012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=18http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=18Data sheet Dimensions (continuous) Automatic balancing valves ASV H G1/4 S a a L ASV-BD DN 15 20 25 32 40 50 L 65 75 85 95 100 130 H mm 92 95 98 121 125 129 27 32 41 50 55 67 S a ISO 228/1 G½ G¾ G1 G 1¼ G 1½ G2 ASV-M DN 15 20 25 32 40 50 L1 65 75 85 95 100 130 L2 120 136 155 172 206 246 L3 139 159 169 179 184 214 H1 mm 48 60 75 95 100 106 15 18 23 29 31 38 28 35 45 55 55 55 27 32 41 50 55 67 H2 D1 S a ISO 7/1 Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ b ISO 228/1 G¾A G1A G 1¼ A G 1½ A G 1¾ A G 2¼ A ASV-I DN 15 20 25 32 40 50 L1 65 75 85 95 100 130 L2 120 136 155 172 206 246 L3 139 159 169 179 184 214 H1 mm 48 60 75 95 100 106 15 18 23 29 31 38 28 35 45 55 55 55 27 32 41 50 55 67 H2 D1 S a ISO 7/1 Rp ½ Rp ¾ Rp 1 Rp 1¼ Rp 1½ b ISO 228/1 G¾A G1A G 1¼ A G 1½ A G 1¾ A G 2¼ A Fig.19 18 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=19http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=19Data sheet Appendix A-Sizingdiagram Automatic balancing valves ASV Fig. A -SizingdiagramASV-P/PVDN15-40 DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 192012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=20http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=20Data sheet Appendix A-Sizingdiagram Automatic balancing valves ASV Fig. B-SizingdiagramASV-PVDN50-100 20 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=21http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=21Data sheet Appendix A-Sizingdiagram Automatic balancing valves ASV 10 20 30 50 100 200 300 400 600 1000 2000 4000 3000 6000 8000 10000 20000 30000 40000 50000 Fig.C - SizingdiagramASV-BDDN15-50 DEN-SMT/SI VD.A6.E1.02 © Danfoss 06/2012 212012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=22http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=22Data sheet Appendix A Automatic balancing valves ASV Fig. D-SizingdiagramASV-I,DN15-50 Fig. E -PressuredropoverASV-Mvalves,DN15-50 22 VD.A6.E1.02 © Danfoss 06/2012 DEN-SMT/SI2012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=23http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=23Data sheet Insulation, fittings Description Insulation The EPS styropor packaging in which the valve is supplied can be used as insulation in systems where the temperature does not exceed 80 °C under continuous operation. ASV-BD valve is supplied together with EPP insulation cap. ASV-BD insulation cap offers click on feature for fact and easy mounting on the valve. Insulation cap in EPP is offered for use at higher temperatures, up to 120 °C. Both materials (EPS and EPP) are approved in accordance with fire class standard B2, DIN 4102. Fittings For valves with external thread Danfoss offers threaded or welded tailpieces as accessory. Materials Nut .brass Tailpiece welding .steel Tailpiece threaded .brass Ordering EPP insulation cap for ASV Connection DN 15 DN 20 DN 25 DN 32 DN 40 Code No. 003L8170 003L8171 003L8172 003L8173 003L8139 EPP insulation cap for ASV-BD Connection DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 Code No. 003Z4781 003Z4782 003Z4783 003Z4784 003Z4785 003Z4786 Fittings Type Comments to pipe R 1/2 R 3/4 R1 Tailpiece threaded (1 pcs.) R 1 1/4 R 11/2 R2 DN 15 DN 20 Note: ASV-PVDN50(2 1/2”) andASVI/MDN50(2 1/4”) havedifferentsize connection. 1) TousewithASV-PVDN50 valves 2) TousewithASV-IandASV-MDN50 valves. DEN-SMT/SI to valve DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 (2 1/4”) DN 50 (2 1/2”) DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 (2 1/4”) DN 50 (2 1/2”) Code No. 003Z0232 003Z0233 003Z0234 003Z0235 003Z0273 003Z0274 2) 003Z0278 1) 003Z0226 003Z0227 003Z0228 003Z0229 003Z0271 003Z0272 2) 003Z0276 1) DN 25 Tailpiece welding (1 pcs.) DN 32 DN 40 DN 50 VD.A6.E1.02 © Danfoss 06/2012 232012-06-12T10:54:21+02:00http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=24http://danfoss.ipapercms.dk/Heating/AutoGen/26912_33491/?Page=24Data sheet Dimensions - insulation Automatic balancing valves ASV ASV-I/M/P/PV DN D 15 20 25 C B 32 40 A A C B A 61 76 100 118 118 B mm 110 120 135 148 148 111 136 155 160 180 37 45 55 70 70 C D ASV-BD DN 15 20 25 32 40 50 A 79 84 99 132 138 138 B mm 85 85 85 85 130 126 122 122 122 185 185 185 C ASV-PV tender text 1. The pressure differential controller valve should be available in the range from DN 10-100. 2. The pressure differential control based on integrated membrane element. 3. The range of settable differential pressure should be 5-25kPa or 20-40 kPa in dimension DN 15-40 and 20-40 kPa, 35-75 kPa or 60-100 kPa in dimension DN 50-100. 4. The setting of pressure difference should be with hexagon key (DN 15-40) or socket need to be hidden. 5. The pressure difference setting should be linear (1 turn 1 kPa or 1 turn 2 kPa depending on dimension). 6. The pressure difference range should be interchangeable with spring change in dimension DN 15-40 without drain the system. 7. Shut off service function should be possible with hand knob. 8. Drain function is needed in range DN 15-50. 9. Temperature range should be −20 … +120 °C at DN 15-40 and −10 … +120 °C at DN 50-100. 10. Nominal pressure should be 16 bar with test pressure 25 bar. 11. The pressure differential control valve package in DN 15-40 range needs to contain impulse tube (min. 1,5 m) and EPS valve insulation up to min. 80 °C. Nominal diameter: _ ________ Connection: ________ Adjustment range from - to ________ kPa Produced by: Danfoss Type: ASV-PV Ordering no.: 003L_ ____ 24 VD.A6.E1.02 Produced by Danfoss A/S © 06/20122012-06-12T10:54:21+02:00