operating limits Temperature range : -10 to + C* Operating pressure : to 20 bar* * according to models. VESSES IAPHRAGM OR BAER TANKS For expansion and pressure boosting applications AdVANTAGES APPICATIONS Closed vessels removing any risk of evaporation and frost. arge useful water reserve avoiding starting the pump too often in pressure boosting configuration. Speedy, easy installation. design - Horizontal or vertical closed vessel. - The bladder or diaphragm ensures total separation between water and air. - It is protected by a strainer at the water inlet. - The vessel enveloppe is coated (inside and outside) with an anti-corrosion paint. - Vessels with 2 to 24 litres capacity are mounted directly on the piping; other models are to be placed on the ground. - Vessels are in accordance with european standard (PE 97/2/CE). - Tanks with interchangeable bladder are ACS approved (for potable water). EXPANSION For maintaining the pressurization of systems subject to temperature variations by compensation of water expansions. - For central heating, cooling and air-conditioning systems. PRESSURE BOOSTING irect pressure boosting A small vessel maintains the pressure in the installation when no delivery is required and protects the pressure controller against pressure variations and water expansion. Conventional pressure boosting A large vessel with a large useful water reserve covers the low deliveries required by the installation. N.T. N o 00-2/ENG. - Ed. 5/05-08 1
VESSES EXPANSION : OPERATING PRINCIPE Principle of the diaphragm vessel 1 2 eau water membrane diaphragm diaphragm membrane nitrogen azote water eau nitrogen azote water eau nitrogen azote azote nitrogen valve inflating de gonflage valve Principle of the bladder vessel nitrogen azote bladder vessie water eau Before the increase in tempera ture, the pressure inside the vessel balances the installation static pressure. The nitrogen fills the whole vessel volume. The diaphragm remains stuck against the wall. uring the increase in temperature, the water volume in the system increases under the effect of expansion and compresses the diaphragm. The nitrogen volume decreases and the pressure in the installation increases. After the increase in temperature, the final pressure nears the calibration pressure of the safety valve. When the boiler is shut down, the water in the system cools down and the installation pressure decreases. The water contained in the vessel returns to the system to restore the pressure and the water volume. In cooling and air-conditioning installations : when the system cools down, the water volume decreases; the expansion vessel returns the water to the system to maintain the pressure. upon shutdown, the water at ambient temperature expands, the increased volume of water enters the vessel and compresses the diaphragm. Theoretical installation volume Conversion of kw into litres: heating body for 1 kw for installations Convectors and steel radiators 7 litres Cast iron radiators 10 litres 581 th/h Hot plates 8,5 litres Any heating body 7 litres > 581 th/h 1 th/hr = 0 kcal = 1.16 kw. BASIS FOR COMPUTATION Hot water system 1 - Expansion volume : Vexp = Vt x (Cm Cr) where : Vt : total installation volume Cm : Expansion coefficient at average operating temperature, i.e.: T boiler outlet + T return 2 Cr : Expansion coefficient at filling temperature (10 to 12 C) 2 - Total vessel volume : V = Vt x (Cm Cr) 1 P1 P2 where : P1 : effective inflating pression corresponding to the static head + 1 bar* P2 : valve cracking pressure + 1 bar* * Corresponding to the atmospheric pressure. Water expansion coefficients Temperature coefficient C 10 0,0004 20 0,0018 0 0,0044 40 0,0079 50 0,0119 55 0,014 60 0,0169 65 0,0196 70 0,0225 Temperature coefficient C 075 0,0256 080 0,0288 085 0,022 090 0,057 095 0,094 0,041 105 0,0472 110 0,051 Note : volumes of still cold water submitted to expansion require a food-processing grade expansion system. 2
250 VESSES APPICATION : EXPANSION 1,000,000 800,000 600,000 400,000 200,000 TOTA VOUME TOTA OF E THE 'INSTAATION EN ITRES IN ITRES,000 80,000 60,000 40,000 20,000 10,000 8,000 6,000 4,000 2,000 1,000 800 600 400 200 80 60 TEMPERATURE MOYENNE EN C 20 AVERAGE TEMPERATURE IN C 0 40 50 60 70 80 90 110 40 bar 5m 6 8 12 18 24 5 50 80 00 500 750 1500 0 000 4000 10 8 12 18 24 5 50 80 250 00 500 750 1500 0 000 4000 15 12 18 24 5 50 80 250 00 500 750 1500 0 000 4000 4 20 12 18 24 5 50 80 250 00 500 750 1500 0 000 4000 4.5 25 24 50 00 500 750 0 1500 000 4000 5 0 24 50 00 500 750 0 1500 000 4000 5.5 5 24 50 00 500 750 0 1500 000 4000 6 bar 40m 24 50 00 500 750 0 1500 000 4000 Static heads in m Valve cracking pressures in bar (or valve calibration). NOTE : Above 500 litres, use multiples or add vessels. For expansion of secondary water systems, hot or cold, use of food-processing grade vessels is mandatory. These vessels also ensure the safety of systems filled with water and 0% glycol
VESSES APPICATION: CONVENTIONA PRESSURE BOOSTING Pressures in bar Vessel volume in litres Pe Pd 8 18 24 50 60 200 00 500 750 0 1500 1,5 2,5 2,2 4,9 6,5 1,6 16, 27,1 54 81 16 204 271 407 54 1,5 2,9 6,4 8,6 17,8 21,4 5,6 71 1071 178 267 56 54 71 2 1,9 4, 5,7 11,9 14, 2,8 48 71 119 178 28 56 475 2,5 2,5 5,7 7,6 15,8 19,0 1,7 6 95 158 28 17 475 6 2,5,5 1,7,8 5,1 10,6 12,7 21,1 42 6 106 158 211 17 422 2,5 4 2, 5,1 6,8 14, 17,1 28,5 57 86 14 214 285 428 570 4 1,5,4 4,6 19,5 11,4 19,0 8 57 195 14 190 285 80 4,5 2,1 4,7 6,2 1,0 15,5 25,9 52 78 10 194 259 89 518 5 2,5 5,7 7,6 15,8 19,0 1,7 6 95 158 28 17 475 6,5 4,5 1,4,1 4,1 18,6 10,4 17, 5 52 186 10 17 259 45,5 5 1,9 4, 5,7 11,9 14, 2,8 48 71 119 178 28 56 475,5 5,5 2, 5, 7,0 14,6 17,5 29,2 58 88 146 219 292 48 585 4 5 1, 2,9,8 17,9 19,5 15,8 2 48 179 119 158 28 17 4 5,5 1,8,9 5, 11,0 1,2 21,9 44 66 110 164 219 29 428 4 6 2,2 4,9 6,5 1,6 16, 27,1 54 81 16 204 271 407 54 4,5 5,5 1,2 2,6,5 17, 18,8 14,6 29 44 17 110 146 219 292 5 7 1,9 4, 5,7 11,9 14, 2,8 48 71 119 178 28 56 475 5 8 2,5 5,7 7,6 15,8 19,0 1,7 6 95 158 28 17 475 6 6 9 2, 5,1 6,8 14, 17,1 28,5 57 86 14 214 285 428 570 7 10 2,1 4,7 6,2 1,0 15,5 25,9 52 78 10 194 259 89 518 8 11 1,9 4, 5,7 11,9 14, 2,8 48 71 119 178 28 56 475 10 14 2,0 4,6 6,1 12,7 15,2 25, 51 76 127 190 25 80 507 12 16 1,8 4,0 5,4 11,2 1,4 22,4 45 67 112 168 224 5 447 Triggering pressure (Pd) Cut-in pressure (Pe) Note Vessel capacity is determined according to the pump delivery, cut-in and triggering pressures, and the number of start-ups per hour. BASIS FOR COMPUTATION etermine the vessel volume according to the cut-in pressure (Pe), triggering pressure (Pd) and useful water reserve. Compute the useful water reserve using the following general formula : RU = 16,5 x Q n where : Q : average delivery of a pump l/min. n : max. number of start-ups per hour (11 to 15). Example : Q = 9 m/hr, i.e. 150 l/min. n = 11 start-ups/hour max. Pe = 2 bar. Pd =,5 bar. Useful water reserve (RU) : RU = 16,5 x 150 = 225 litres 11 In the table opposite, look for the vessel volume corresponding to a useful water reserve of 225 litres (or the nearest value), according to pressures Pe and Pd. Vessel volume : 750 litres Actual useful water reserve : 28 litres Remark Choose the biggest difference between Pe and Pd, which allows to reduce the vessel volume for a same useful water reserve. 4
VESSES PRESSURE BOOSTING IMENSIONS Pressure boosting tanks with interchangeable bladder esignation Order reference vol. Operating pressure Figure Temp. litre bar C mm mm RESERV-20-1B-VT-V-INOX 40458 20 1 1 max. 1" 500 250 RESERV-8-10B-VT-V 6604 8 10 1-10 to + /4 05 220 RESERV-18-8B-VT-V 6605 18 8 1-10 to + /4 75 260 RESERV-24-8B-VT-V 6606 24 8 1-10 to + 1" 485 260 RESERV-50-10B-VT-V 6607 50 10 2-10 to + 1" 720 80 RESERV--10B-VT-V 6608 10 2-10 to + 1" 880 460 RESERV-200-10B-VT-V 668 200 10 2-10 to + 1"1/4 1070 590 RESERV-00-10B-VT-V 669 00 10 2-10 to + 1"1/4 1250 650 RESERV-500-10B-VT-V 40122 500 10 2-10 to + 1"1/4 1600 750 RESERV-750-10B-VT-V 401224 750 10 2-10 to +50 2 1820 800 RESERV-0-10B-VT-V 4076664 0 10 2-10 to +50 2 1/2 210 800 RESERV-1500-10B-VT-V 408425 1500 10 2-10 to +50 2 1/2 210 0 RESERV--10B-VT-V 4077710 10 2-10 to +50 N 65 2550 1 RESERV-12-16B-VT-V 408678 12 16 1-10 to + /4 15 265 RESERV-18-16B-VT-V 406425 18 16 1-10 to + /4 75 265 RESERV-24-16B-VT-V 408680 24 16 1-10 to + /4 490 265 RESERV-5-16B-VT-V 408681 5 16 1-10 to + 1 470 80 RESERV-50-16B-VT-V 408682 50 16 2-10 to + 1 720 80 RESERV-60-16B-VT-V 40868 60 16 2-10 to + 1 80 80 RESERV-80-16B-VT-V 408684 80 16 2-10 to + 1 760 460 RESERV--16B-VT-V 408685 16 2-10 to + 1 880 460 RESERV-150-16B-VT-V 408686 150 16 2-10 to + 1 100 510 RESERV-200-16B-VT-V 408687 200 16 2-10 to + 1 1/4 1070 590 RESERV-00-16B-VT-V 408688 00 16 2-10 to + 1 1/4 1250 650 RESERV-500-16B-VT-V 408689 500 16 2-10 to + 1 1/4 1600 750 RESERV-24-8B-HZ-V 6609 24 8-10 to + 1 485 260 RESERV-50-10B-HZ-V 6610 50 10-10 to + 1 595 80 RESERV-60-10B-HZ-V 401942 60 10-10 to + 1 720 80 RESERV--10B-HZ-V 6611 10-10 to + 1 780 460 Anti-hammer vessels esignation Order reference vol. Operating pressure Fig. Type Temp. litre bar C C mm mm RESERV-0,16-20B-VT-M-AB 4015478 0,16 20 4 Membrane -10 to + 1/4" 112 84 RESERV-8-16B-VT-V-AB 4084218 8 16 1 Vessie -10 to + /4 10 220 Figure1* * for connection onto piping Figure 2 Figure 4* Figure 5
VESSES EXPANSION IMENSIONS Expansion diaphragm tanks esignation Order reference vol. Operating pressure Figure Temp. litre bar C mm mm RESERV-6-4B-VT-M 66284 6 4 1-10 to + /4" 245 245 RESERV-8-4B-VT-M 66285 8 4 1-10 to + /4" 275 245 RESERV-12-4B-VT-M 66286 12 4 1-10 to + /4" 20 285 RESERV-18-,5B-VT-M 66287 18,5 1-10 to + /4" 85 285 RESERV-24-,5B-VT-M 66288 24,5 1-10 to + /4" 420 25 RESERV-5-5B-VT-M 66289 5 5 2-10 to + /4" 475 80 RESERV-50-6B-VT-M 66290 50 6 2-10 to + /4" 640 80 RESERV-80-6B-VT-M 66291 80 6 2-10 to + /4" 690 460 RESERV--6B-VT-M 66292 6 2-10 to + /4" 810 460 RESERV-150-6B-VT-M 4000155 150 6 2-10 to + 1" 970 510 RESERV-200-6B-VT-M 4000156 250 6 2-10 to + 1" 120 590 feature a) Installation In expansion configuration, on boiler return line, before the circulating pump(s) if installed on the return line. In pressure boosting configuration, on piping connected to the discharge collector. Charge pressure. Charge pressure shall be slightly below : - the system pressure (after venting), in expansion configuration. - the cut-in pressure less approx. 0, bar, in pressure boosting configuration. b) Packaging Vessels are pre-charged with nitrogen (1 or 1,5 bar) and delivered in a cardboard packing or a plastic bag, depending on models. c) Maintenance Standard bladder replacement. AccessoRIes Figure 1* * for connection onto piping Figure 2 - Safety valves with or without pressure gauge. - Pressure gauge. - Automatic air vent. NOTE For higher installation characteristics, see data sheets specific to expansion modules : EXPANSON. 6