THERMOFLO S E A L E D S Y S T E M S THERMOFLO SEALED SYSTEMS FOR HEATING, COOLING AND WATER SUPPLY APPLICATIONS TO BS7074 EXPANSION VESSELS PRESSURIZERS PUMPS& SYSTEMS WALL OR BASE MOUNTING PRESSURIZERS COMBINED BASE-MOUNTED SYSTEMS AUTOFLO PUMPLESS SYSTEM TRANSFLO FOR LARGER SYSTEMS BS4814 BS6144 AUTOMATION THERMOFLO 5
THERMOFLO DA E X P A N S I O N V E S S E L S THERMOFLO EXPANSION VESSELS FOR HEATING, COOLING AND HOT WATER SUPPLY SYSTEMS Thermoflo expnsion vessels use n internl diphrgm, of the wter in the bg design, to contin the incresed system volume resulting from n increse in temperture within seled wter system. CONSTRUCTION All welded steel construction, incorporting system wter connection, bolted ccess flnge nd schreder gs filling vlve. The replceble bg diphrgm ccomodtes the expnsion wter, whilst preventing contct between the expnsion wter nd vessel shell. A rechrgble gs cushion chrge, of Nitrogen or clen dry comressed ir, is segregted between the diphrgm nd shell. The diphrgm mintins seprtion between the expnding wter nd gs cushion which in cosequence becomes compressed - the resultnt increse in system pressure is mintined between set limits, in ccordnce with the vessel selection prmeters. Thermoflo vessels my lso be used in cold wter booster systems to control the booster pump running cycle. Operting limits Wter temperture rnge - ºC t diphrgm Mximum pressure - br seled systems BS4814:1990 Mximum pressure - br wter supply BS6144:1990 Optionl pressure rtings - br wter supply Mterils of construction Vessel Shell nd Ends Wter connection Diphrgm Vessel coding exmple TOTAL VESSEL VOLUME - LITRES DA DA Minus to +70 Crbon Steel - Mechnised Welded Glvnised Steel EPDM/SBR 6 (BS4814 limit) 7 /16 GAS CUSHION PRECHARGE PRESSURE - BAR DA 200-2.5 AUTOMATION LIMITED, GREEN LANE, FELLING, GATESHEAD, NE 0LZ, ENGLAND. for better fluid hndling THERMOFLO 5.0
THERMOFLO DA E X P A N S I O N V E S S E L S 1 DIMENSIONS & DATA D VESSEL MODEL TOTAL VOLUME LITRES DIAGRAM REFERENCE DIMENSIONS in mm s 1 2 3 D H L h d MAX PRESSURE BAR DRY WEIGHT kg H DA2 DA5 DA8 2 160 170 5 8 160 200 315 330 Rp1/2 1.0 Rp3/4 Rp3/4 2.5 3.0 DA20 20 250 250 Rp3/4 6.0 d DA60 60 380 860 680 415 Rp1 17 DA80 80 800 640 460 RP1 20 DA0 0 960 780 490 Rp1 26 2 DA200 DA300 200 300 550 630 1280 1430 80 1237 555 635 Rp11/2 Rp11/2 46 59 D DA DA 16 2270 Rp11/2 Rp11/2 114 162 DA00 00 21 Rp2 214 H Stndrd verticl version Optionl horizontl version d 3 Operting limits Wter temperture rnge - ºC t diphrgm Mximum pressure - br seled systems BS4814:1990 Mximum pressure - br wter supply BS6144:1990 Optionl pressure rtings - br wter supply DA Minus to +70 6 (BS4814 limit) 7 /16 d h L Due to policy of continul development, we reserve the right to lter specifictions without prior notice. THERMOFLO 5.0.1 0111 AUTOMATION LIMITED, GREEN LANE, FELLING, GATESHEAD, NE 0LZ, ENGLAND
THERMOFLO S E A L E D S Y S T E M S E L E C T I O N THERMOFLO SEALED SYSTEMS FOR HEATING, COOLING AND WATER SUPPLY APPLICATIONS Thermoflo seled systems eliminte the need for n open expnsion cistern nd feed pipe, they do not hve n open vent, thus corrosion risks due to the ingress of ir re minimized. They lso llow, in pproprite instlltions, the use of smller pipes nd heting surfces by operting t tempertures in excess of 0 C. In seled wter system, llownce hs to be mde to ccommodte the incresed volume of wter resulting from therml expnsion, therefore stisfctory opertion depends on correctly selected expnsion vessels nd ncillry equipment, instlled nd pplied ccording to good customry design prctice. Generlly the selection nd ppliction procedures outlined re in complince with British Stndrd code of prctice BS7074 Prts 2&3:1989. Equipment selection is bsed on the following design stge dt: Totl system volume (litres)-the totl volume of wter in the complete system. System flow temperture ( C) - the mximum design temperture of the wter circulting in the system. Mximum mbient temperture ( C) - in chilled wter system pplictions, the mximum mbient temperture is used to clculte the expnsion volume. Sttic height pressure (br) - the pressure creted by the system height between the uppermost prt of the circuit nd the expnsion vessel level. Finl system design pressure (br) - the pressure occuring t the expnsion vessel t mximum design temperture. SELECTION PROCEDURE Determine the initil system design pressure t the initil cold wter fill temperture, tken to be 4 C, clculted s: initil pressure = sttic pressure + pressure mrgin (see tble) - br Clculte the system expnsion volume, the increse in volume of wter when rised to the design temperture, ccording to: expnsion volume=totl system volume x expnsion fctor (see tble) - litres The expnsion vessel cn be selected, from the vessel chrt, to ccommodte the clculted expnsion volume within the mximum cceptnce volume of the vessel nd llowing t lest % mrgin. Clculte the design cceptnce fctor, the rtio of the expnsion volume to the totl vessel volume, thus: cceptnce fctor = expnsion volume totl vessel volume AUTOMATION LIMITED, GREEN LANE, FELLING, GATESHEAD, NE 0LZ, ENGLAND. for better fluid hndling THERMOFLO 5.0.2
SELECTION PROCEDURE As consequence of rising the system wter temperture to the mximum design temperture, the system pressure will increse to the finl system design pressure clculted s: finl pressure = initil pressure + cceptnce fctor 1.0 - cceptnce fctor If the clculted finl pressure is higher thn required, it cn be reduced by reselecting lrger volume expnsion vessel. The initil system design pressure will be utomticlly mintined by Thermoflo pressurizer incorporting high nd low pressure switches, set to interrupt the het source or chiller when predetermined mximum or minimum system pressures re reched. SELECTION EXAMPLE An office building is to be provided with low temperture hot wter heting system, hving flow nd return tempertures of 82 C nd 71 C respectively. The expnsion vessel nd pressurizer will be locted in the bsement plntroom nd subject to the mximum pressure, - the distnce from the equipment level to the uppermost prt of the heting circuit is 20 metres. The component hving the lowest working pressure is the boiler t 5 br, from which sfety vlve lifting mrgin of 0.7 br is subtrcted leving 4.3 br. The pressure hed of the circulting pump is 60 kn/m 2 nd it is locted so tht the boiler nd expnsion vessel connection re on its suction side, the effect of the pump hed will be to lower the pressure t the boiler, therefore the 4.3 br cn be considered s the mximum llowble pressure t the expnsion vessel. Totl system volume 5,000 litres Flow temperture 82 C Sttic pressure 2.0 br Mximum llowble pressure 4.3 br Initil pressure = sttic pressure + pressure mrgin The pressure mrgin t 82 C from tble is 0.5 br Initil pressure = 2.0 + 0.5 = 2.5 br Expnsion volume = totl system volume x expnsion fctor The expnsion fctor t 82 C from tble is 0.03 Expnsion volume = 5,000 x 0.03 = 150 litres From the expnsion vessel chrt, model DA is selected to ccept 150 litres expnsion volume with t lest % mrgin. Acceptnce fctor = expnsion volume totl vessel volume Acceptnce fctor = 150 = 0.3 The finl pressure is clculted ccording to: Finl pressure = initil pressure + cceptnce fctor 1.0 - cceptnce fctor Finl pressure = 2.5 + 0.3 = 4.0 br 1.0-0.3 The sfety vlve set pressure will be 4.0 + 0.7 = 4.7 br or nerest prcticl setting within the mximum llowble system pressure. The pproprite pressurizer cn be selected to mintin the initil system design pressure. The expnsion vessel nd pressuriser cn be combined s fctory ssembled, bse mounted seled system to reduce on-site instlltion. MAXIMUM PRESSURE EXPANSION FACTOR TEMPERATURE MARGIN WATER WITH ANTI-FREEZE WATER C BAR 20% 35% 50% 20 0.5 0.002 0.006 0.008 0.0 30 0.5 0.005 0.0 0.012 0.015 40 0.5 0.008 0.013 0.017 0.021 50 0.5 0.012 0.018 0.022 0.026 60 0.5 0.017 70 0.5 0.023 82 0.5 0.030 90 0.8 0.036 0 1.3 0.044 1 2.0 0.052 120 2.5 0.060 Pressure mrgin - The dditionl pressure imposed on the circuit to exclude ir from the system t the highest point. At tempertures of 0 C nd bove the pressure mrgin includes n nti-flsh mrgin of 17 C in ccordnce with Helth nd Sfety Executive (PM5) guidnce. THERMOFLO 5.0.3 AUTOMATION LIMITED, GREEN LANE, FELLING, GATESHEAD, NE 0LZ, ENGLAND
THERMOFLO PRESSURIZERS AND COMBINED SYSTEMS THERMOFLO AUTOMATIC PRESSURIZERS FOR SEALED HEATING AND COOLING SYSTEMS Thermoflo pressurizers control the wter level within seled wter system, by utomticlly mintining the initil system design pressure. CONSTRUCTION Cbinet style pressurizers or fctory ssembled bse-mounted combintion seled systems: including pressurizer nd expnsion vessel pre-piped redy for site instlltion. Single or duplicte pumps - the selected pump will utomticlly introduce mke-up wter into the system in the event of minor system wter losses - detected by drop in system pressure below the initil system design pressure. Cold wter brek tnk incorporting; flot operted vlve, sttutory ir-gp nd overflow. Diphrgm ccumultor to reduce the frequency of pump strts. Integrl controller for utomtic pump control, outgoing terminls re provided for fil-sfe high or low pressure interlock nd remote lrm. Locl visul lrm lmp is stndrd. Operting limits Mximum initil pressure - br 3.5 7.0 Minimum initil pressure - br Mins wter connection Overflow connection Electric supply PRESSURIZER SIZE 1503 1507 0.8 1/2 Flot vlve - BS1212 prt 2 - Type AB ir gp-ct 5 25 dimeter 230 volt,1phse, 50 Hz- code E1 Pressurizer nd bse-mounted combintion system vrints PRESSURIZER COMBINATION SYSTEM Cbinet style pressurizer Wll-mounted pressurizer Single pump Duty/stndby pumps Integrl pump controller High/low pressure interlock Two-system option Custom control options WM CWM PS CPS PD CPD AUTOMATION LIMITED, GREEN LANE, FELLING, GATESHEAD, NE 0LZ, ENGLAND. for better fluid hndling THERMOFLO 5.1
1 THERMOFLO P R E S S U R I Z E R S PRESSURIZER DIMENSIONS W PRESSURIZER MODEL WM1503 PS1503 PD1503 PS1507 PD1507 MAX INITIAL PRESSURE BAR DIAGRAM REFERENCE DIMENSIONS in mm s 300 238 665 WEIGHT kg 3.5 7.0 1 2 3 W L H DRY WET 22 28 34 32 40 32 47 53 51 59 H Pressurizer coding exmple SIZE INITIAL/FINAL PRESSURE - BAR PS 1503-1.5/2.5 L 2 W 3 D 300 COMBINATION SYSTEM DIMENSIONS MODEL CP - 20 CP - 60 CP - 80 CP - 0 CP - 200 CP - 300 CP - CP - CP - 00 CP - 02 DIAGRAM 600 700 700 700 DIMENSIONS in mm s 800 00 10 1250 1250 1350 2000 9 380 850 1330 1480 1660 2350 2190 1700 Multiple vessel rrngement 550 630 WEIGHT kg 1 2 3 W L H D DRY WET CP - 1502 700 2000 2350 470 995 Combintion system coding exmple 42 75 80 86 8 130 195 245 355 370 50 95 1 120 180 235 370 5 705 720 H PRESSURIZER SIZE VESSEL SIZE INITIAL/FINAL PRESSURE - BAR CPS 1503-200 - 1.5/2.5 W L Due to policy of continul development, we reserve the right to lter specifictions without prior notice. THERMOFLO 5.1.1 0111 AUTOMATION LIMITED, GREEN LANE, FELLING, GATESHEAD, NE 0LZ, ENGLAND
THERMOFLO WM COMPACT-PRESSURIZER COMPACT WALL-MOUNTED THERMOFLO COMPACT WALL-MOUNTING PRESSURIZER FOR SEALED HEATING AND COOLING SYSTEMS Thermoflo pressurizers control the wter level within seled wter system, by utomticlly mintining the initil system design pressure. CONSTRUCTION Compct spce sving, wll-mounting or bse-mounting cbinet style pressurizer fctory tested nd pre-set to suit the system design prmeters. Single duty pump will utomticlly introduce mke-up wter into the system in the event of minor system wter losses, detected by drop in system pressure below the initil system design pressure. Cold wter brek tnk incorporting; flot operted vlve, sttutory ir-gp nd overflow. Diphrgm ccumultor to reduce the frequency of pump strts. Integrl controller with outgoing terminls for fil-sfe high or low pressure interlock nd remote lrm. Operting limits Mximum initil pressure - br Minimum initil pressure - br Mins wter connection Overflow connection Electric supply DIMENSIONS PRESSURIZER SIZE WM1503 3.5 0.8 1/2 Flot vlve - BS1212 prt 2 - Type A ir gp 25 dimeter 230 volt,1phse, 50 Hz- code E1 2.1 mps - FLC FRONT VIEW 300 W System Connection 238 D Optionl integrl controller 665 H AUTOMATION LIMITED, GREEN LANE, FELLING, GATESHEAD, NE 0LZ, ENGLAND for better fluid hndling THERMOFLO WM 5.2