/FontBBox [ -137 -307 1000 1109 ] >> /MC3 103 0 R Having worked at Danfoss for 10 years, Greg managed the Danfoss Underfloor Heating division in the UK. *hi{:j !=@H{Z3\&i,p]6BKc:-9p{|_vpN#(e!
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Record the flow rate in the commissioned condition, Turn the spring setting mechanism on the valve until the calculated opening pressure loss is set, If the valve is open, turn the mechanism until it is just closed. 0 0 0 0 0 0 0 456 456 410 456 456 228 456 456 182 0 410 182 683 456 456 456 456 273 145 0 obj<>stream /FirstChar 32 /FontDescriptor 93 0 R %PDF-1.7 % /EmbeddedFiles 41 0 R endobj 0 0 0 667 0 722 667 0 778 722 0 0 0 0 0 722 0 0 0 722 0 0 722 0 0 0 0 0 0 0 0 0 0 /FontDescriptor 91 0 R hc v1v 1R!v n!#^Io0fi& b FU 700;SQ" /LastChar 150 0000002944 00000 n
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>> endobj Thanks for using Screwfix Q&A. JT, This valve looks and feels well made and is simple to adjust. 61 0 obj
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/FontDescriptor 61 0 R /BaseFont /MMBIFC+Frutiger-Bold Our warehouse staff have advised that the width (length from end to end) of this valve is 73mm, /Resources 50 0 R /OP false With a straight valve, it does not matter if installed vertically or horizontally. /Encoding /WinAnsiEncoding /Type /ExtGState wkQ+\eSofI3/ln6o~/xhpm$E+o+:BIw'dJx NirSaex;8Grq;K.y b1luI9'\ 0000015585 00000 n 'o2{,Zn{z Martin. 0000004005 00000 n 64 0 obj
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/L 279 This point just between open and closed is the setpoint.
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120C, Experts within Heating Greg Tracy has been working in the HVAC industry for the last 15 years. >> >> /OPM 1 My system shouldn't ever 'need' a bypass as it's a W valve system with one rad with no trv, so the manual bypass was very inefficient but I didn't want to just shut it off. Greg TracySend Greg an email+44 1234364621, Bypass valve are to be selected on the required bypass flow rate and opening pressure loss, The valves shall be capable of the required opening pressure within the published spring range, The valves shall be installed with a partner valve to enable bypass flow measurement and flow limiting if necessary, The partner valves shall be fixed orifice in DN15-50 and variable orifice in DN50 (high flow) to DN400, The valve shall be installed between flow and return in accordance with the flow direction shown on the valve casting, The partner valve shall be on the return, just after the bypass valve, and within the impulse tube loop. >> /TT5 53 0 R /Rotate 0 500 0 0 556 556 0 0 333 389 333 556 444 778 0 444 ] %PDF-1.4 /FirstChar 32 startxref endobj /MC9 115 0 R /StemV 112 hb``a``z6g 001Gs"vfGGG7|,.00[. \*!X,4"^A_bq5MdQ>Cs/ Hello Maaartin, >> Ideal for sealed systems to protect pumps when zone valves close. xbb``b`` % 0000002363 00000 n endobj >> >> Hi Mengineer, /Ascent 935 /BG2 /Default << SR{Afv7v!HdF{ARJUJkgkN2TiT4]~*J!uQ!TD*VRcQU)FFY"q}s2YPT31VLB&Vq#e4gQbzj )a{B-g(lQ%S(1LqD t7(e"1"SbkcHJD'3|olz>|B$- endobj /BaseFont /MMBHAG+Arial 0000022689 00000 n Record the pressure setting as the actual opening pressure loss, Open the system to design flow rate and operate as normal, The valve will remain close in high load conditions and open in low flow conditions.
/Contents [ 65 0 R 66 0 R 67 0 R 68 0 R 69 0 R 70 0 R 72 0 R 73 0 R 118 0 R ] 0000001557 00000 n /BaseFont /MMBHLF+ArialNarrow /LastChar 121 AVDO is a self-acting constant flow control primarily used either to maintain minimum flow rates through e.g. /B 295 xb``a``Wc`c`> ,Kf10L9",vsriqqsTL1)u4t,KO(vb_:|6 22|b`A&A&RO/tkXG *L8r'p2GOiwxO*^S']"'X ,Dne``nc,`TdxXz} L 65 0 obj
A simple means of ensuring adequate flow through boilers which require a bypass. /Encoding /WinAnsiEncoding /GS4 116 0 R /OP false endobj 0 0 0 456 ] It's been fitted for 2 weeks and no problems, but can't comment on the long term reliability. /TT3 52 0 R %PDF-1.6 % /LastChar 121 <. /F2 56 0 R 0000004082 00000 n 547 0 0 0 0 0 0 0 0 0 0 456 501 456 501 456 0 501 501 228 228 456 228 729 501 501 /Subtype /TrueType 410 228 456 410 592 410 410 410 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 182 182 /Widths [ 228 273 0 0 0 0 0 0 273 273 0 0 228 0 228 0 456 456 456 456 456 456 456 0 0 0 273
/Type /ExtGState /Cs8 58 0 R << << $ ]bg JD@R,E\ M (UeQO.KJ2+D ^5dN@@#V An h z d J +z ) Y44X0m@!@3Ydkd.,&B .hT{)V`$H5r9"l~>AnM5A[4~PLallD'rT It was slightly longer than the manual valve it replaced, but was simple to fit and performs as expected. <<
>> 49 0 obj ` # /FirstChar 32 H$$=Fh BE " QIQ%*U|9#]@?2ZIYz#XlkBji2U2,bp;D(|v\8 /TT2 51 0 R /Type /Font << /Names 48 0 R >> For the last 5 years he has been working and managing the Danfoss HVAC division with consultants and contractors on some of Londons most prestigious Commercial buildings. 143 0 obj This valve has stopped all the flow through the bypass in normal use (I set it to 0.25 bar having done the sums for my system.
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/SA false /SM 0.02 /MC1 99 0 R HWr}h+GR^y@q(1I{s @-M7ww>mw7`n6e&fZLaOu endobj endobj /BG2 /Default ), Works as required. No long term test yet but have used before and had no call backs, loc_en_GB, sid_4747V, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)], loc_en_GB, sid_4747V, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]. << /Widths [ 278 ] /FontWeight 400 /ProcSet [ /PDF /Text ] /CapHeight 0 /FontFile2 76 0 R
<< /FontDescriptor 60 0 R Thank you for using Screwfix Q&A. /GS2 63 0 R 0000012724 00000 n View all: EssentialsFlues & Boiler Accessories. /FontName /MMBHKF+ArialNarrow-Bold >>
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/UCR2 /Default << stream /Type /Font /Widths [ 278 0 0 0 0 0 0 0 0 0 0 0 0 0 278 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 /op true /Flags 32 If an installation schematic isrequiredplease contact your Danfoss representative, Set up the pump and system to deliver the conditions where bypassing should occur. /Type /ExtGState 48 0 obj /Type /Font Copyright Screwfix Direct Ltd 2022 Company Registration no: 3006378 VAT Registered: 232555575. /SA false endobj /Encoding /WinAnsiEncoding 0000007345 00000 n /FontDescriptor 89 0 R
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