Sealed Systems Altecnic Ltd - Caleffi group. Sealed Systems. Heating vessel sizing guide

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1 1.25 Sealed Systems Sealed Systems Sealed primary central heating systems are the most commonly used form of heating system throughout Europe and the rest of the developed world. Sealed central heating systems should not be confused with unvented mains pressure hot water systems, which apply only to the secondary hot water supply side of a combined heating and hot water system. From an installers viewpoint, therefore, there is no requirement to be registered or to notify any authority when fitting a sealed primary heating system. The ease of installation of a sealed system makes it particularly attractive to the installer, eliminating the feed and expansion tank and associated pipework, and thus reducing the risk of corrosion and noise in the system. eating vessel sizing guide Boiler output Vessel size per system static head kw btu/hr 5 m (Litre) 10 m (Litre) 15 m (Litre) bar 1.0 bar 1.5 bar vessel pre-charge (set by installer) Also refer to the Altecnic expansion vessel sizing calculator FREE on request. Advantages can be summarised as follows; System flexibility due to component siting alternatives. ost savings due to considerably reduced installation time. No feed and expansion tank hence avoiding over pumping problems, risk of freezing up etc. Longer life due to virtual elimination of corrosion problems. Noise reduction due to higher system pressure, boiler noise (localised boiling) is significantly reduced or eliminated. Low maintenance costs as equipment is virtually maintenance free, other than for periodic operational checks. Essential omponents and Location Note: Domestic sealed heating systems should take due account of the following British Standards: BS 7074: Part 1: 1998 Application, selection and installation of expansion vessels and ancillary equipment for sealed water sytems Part 1. ode of practice for domestic heating and water supply. BS EN 12828: 2003 eating systems in buildings Design for water based heating systems. The essential components for a sealed system are: Diaphragm Expansion Vessel (complying with BE EN 13831: 2007 losed expansion vessels with built in diaphragms for installation in water ) Safety Valve (pressure relief valve) Pressure Gauge Filling Point (means for system filling, make-up and venting). Altecnic Ltd - aleffi group

2 1.26 Sealed Systems - Robokits A Robokit extra sealed system - Nitrogen filled Vessel (Litre) A litre robokit extra A litre robokit extra A litre robokit extra A litre robokit extra A litre robokit extra A P litre with legs robokit extra A litre robokit extra NEW IMPROVED Sealed system kit comprising: expansion vessel, filling loop, safety relief valve complete with gauge, mounting bracket to suit up to a 25 litre capacity and manifold fitting Robokit sealed system kits & brackets A A A A A ½ sealed system kit (for 8 litre to 80 litre) with tapered vessel connection ¾ sealed system kit with tapered vessel connection ½ sealed system kit with remote SRV (SRV remote from robokit) ½ sealed system kit without bracket Sealed system filling kit comprising: filling loop, safety relief valve complete with gauge, mounting bracket to suit up to 25 litre capacity and manifold fitting Water regulations G24.1 and 24.2 compliant filling loop ondensate/siphon trap ALT-SBP001 ALT-SBP001 NE LU A01 Retro Fit Externally Mounting Boiler ondensate/siphon Trap & Wall Bracket c/w inlet connection and discharge to suit solvent welded overflow pipe ondensate/siphon Trap only Wall bracket only Size of ondensate Trap Size 85mm (W) x 100mm () x 45mm (D) Max Ambient Temp 65 75mm water seal NE LU A01 To place an order T: (Trade sales) T: (OEM sales) E: sales@altecnic.co.uk

3 Sealed Systems - Accessories 1.27 omponents for sealed system mm automatic air vent ½ M x F 3 bar safety relief valve ½ F x F 3 bar safety relief valve ¾ F x F 3 bar safety relief valve ½ F x F 3 bar safety relief valve with pressure gauge A ST ½ M x F 3 bar safety relief valve with gauge port only ¾ F x F 3 bar safety relief valve with gauge A ST ½ 3 bar safety relief valve A ST ½ pushfit x ½ M 3 bar safety relief valve A ST RS-MB WI Pressure gauge for robokit Robo-quattro - 4 way manifold and double check valve RS-MB Vessel mounting bracket 8 litre - 25 litre heating vessels YU-JQAL324 YU-JQAL326 Quattro 8-80 litre heating vessels Quattro 80+ litre heating vessels Filling loops A Robofil fill loop complete with PRV A Ecofil plus filling loop (G24 approved) A Ecofil plus filling loop (G24 approved) with caps and collars A-3006MI Tidy loop filling loop (WRAS approved) A-3006MIA Tidy loop Plus filling loop with caps and collars (WRAS approved) YU-JQAL304 ap and collar for filling loop JI Robofil (poly bag - as with robokit) * Used to fill sealed systems from the mains cold water Approved flexible hoses complete with check valves omply with water regulations and use WRAS approved components * Water regulation G24.1 and 24.2 compliant where indicated NEW IMPROVED A A-3006MIA Digital hand held pressure gauge PVADG Digital hand held pressure gauge PVADG Altecnic Ltd - aleffi group

4 1.28 Expansion Vessels The benefits of Nitrogen filled vessels Nitrogen, a dry inert gas used in the Reflex range of expansion vessels, improves the vessel s life span by reducing corrosion inside the vessel, and prevents loss of pre-charge pressure. Nitrogen permeates through rubber slower than oxygen, is far less reactive to both steel and aluminium and does not degrade rubber prolonging the membrane life. Oxygen in compressed air permeates through the membrane, thus reducing the pre-charge pressure over time. During normal operation, oxygen oxides the membrane in the vessel, causing under-inflation, but dry Nitrogen will maintain proper inflation pressure and will not corrode the inside of the vessel. It s recognised in the industry that oxidative aging is one of the primary causes of decreased vessel life. Tests have shown that if vessels are inflated with nitrogen, there is a significant reduction in failure and increased vessel life. To place an order T: (Trade sales) T: (OEM sales) E: sales@altecnic.co.uk

5 1.29 Vessels Also refer to the Altecnic expansion vessel sizing calculator FREE on request. eating vessel sizing guide Boiler output Vessel size per system static head kw btu/hr 5 m (Litre) 10 m (Litre) 15 m (Litre) bar 1.0 bar 1.5 bar Vessel pre-charge (set by installer) eating expansion vessels sizing eating vessel calculation e x V = [1 - (Pprec ) (Pmax +1)] SRV Static ead V = Vessel size e = oefficient of water expansion = System volume in litres Pmax = System pressure in Bar Pprec = Precharge pressure in Bar Potable water expansion vessels sizing Potable water vessel calculation V = e x [1 - (Pprec + 1) (Pmax + 1)] V = Vessel size e = oefficient of water expansion = System volume in litres Pmax = System pressure in Bar Pprec = Precharge pressure in Bar Pmax = The set pressure of the system safety relief valve typically 6 Bar Pprec = The set pressure of the system pressure reducing valve (typically 3 Bar) * Note system layouts are indicative only. Refer to relevant standards. Altecnic Ltd - aleffi group

6 1.30 Vessels - eating Vessels Materials omponent Shell onnections Diaphragm oating Material arbon Steel arbon Steel Synthetic rubber compound Powder Epoxy Technical Specification Test pressure 1.5 x max working pressure Max. flow operating 120 temperature Max. vessel operating 70 temperature Factory pre-charge 1.5 bar - nitrogen h 88 to litres litres to litres litres h h 200 & 250 litres litres To place an order T: (Trade sales) T: (OEM sales) E: sales@altecnic.co.uk

7 Vessels - eating Vessels 1.31 eating expansion vessels 8-25 litres apacity Diameter eight onnection Weight Max working (Litres) (Ø D mm) ( mm) ( inches) (kg) pressure (bar) V R ¾ V R ¾ V R ¾ V R ¾ V R ¾ V25 eating expansion vessels litres apacity Diameter eight onnection Weight Max working (Litres) (Ø D mm) ( mm) ( inches) (kg) pressure (bar) V R ¾ V R V R V R marked Accessories - Vessels 8 to 25 litres Wall bracket with retaining strap - RS-MB V500W eating expansion vessels litres apacity Diameter eight onnection Weight Max working (Litres) (Ø D mm) ( mm) ( inches) (kg) pressure (bar) V200W R V250W R V300W R V400W R V500W R V600W R V800W R marked OEM heating vessels apacity Model Width eight Length (Litres) (mm) (mm) (mm) V8F Round flat exp vessel 324 Ø 129 n/a V10F Round flat exp vessel 324 Ø 139 n/a V12F Round flat exp vessel 324 Ø 169 n/a Flat vessels for expansion on heating systems and boiler V8F Altecnic Ltd - aleffi group

8 1.32 Vessels - Potable Vessels Materials omponent Shell onnections Diaphragm oating Material arbon Steel arbon Steel with plastic insert Synthetic rubber compound Powder Epoxy Technical Specification Max. working pressure 10 bar Max. vessel operating 70 temperature Factory pre-charge - Vertical range 4.0 bar - nitrogen - orizontal range 2.0 bar - nitrogen System water BE EN ISO male connection thread litre size BE EN male - horizontal range BE EN ISO male 28 to litres 33 litres 33 - with litreswall bracket h to 500 litres litres h L 600 and 1000 litres litres orizontal range To place an order T: (Trade sales) T: (OEM sales) E: sales@altecnic.co.uk

9 Vessels - Potable Vessels 1.33 Vertical potable water expansion vessels 8-33 litres apacity Diameter eight onnection Weight Membrane (Litres) (Ø D mm) ( mm) (inches) (kg) PV8W G ¾ 1.8 Fixed PV12W G ¾ 2.4 Fixed PV18W G ¾ 2.8 Fixed PV25W G ¾ 4.7 Fixed PV33W G ¾ 6.6 Fixed PV33W marked Vertical potable water expansion vessels litres apacity Diameter eight eight onnection Weight Membrane (Litres) (Ø D mm) ( mm) (h mm) (inches) (kg) PV50W G Replaceable PV60W G 1 14 Replaceable PV80W G 1 16 Replaceable PV100W G 1 19 Replaceable PV140W R 1 29 Fixed PV200W G 1¼ 40 Replaceable PV300W G 1¼ 54 Replaceable PV400W G 1¼ 70 Replaceable PV500W G 1¼ 79 Replaceable PV600W G 1½ 103 Replaceable PV800W G 1½ 195 Replaceable PV1000W G 1½ 228 Replaceable marked PV500W orizontal potable water expansion vessels litres apacity Diameter Length eight onnection Weight (Litres) (Ø D mm) (L mm) ( mm) (inches) (kg) PV25W G ¾ 5.5 PV50W G 1 15 PV80W G 1 18 PV100W G 1 21 PV50W marked Accessories for expansion vessels RS-MB2 RS-MB24 A Potable vessel mounting bracket 5 litre - 18 litre Potable vessel mounting bracket 25 litre only Potable vessel bracket 33 litre only Altecnic Ltd - aleffi group

10 1.34 Vessels - Potable Vessels Flow Through Series Potable Vessels The flow through series of potable water vessels for the home are ideal for using with water heaters to save money. Water flows through the vessel, it has a stainless steel connection and thereby meets the ultra-exacting hygiene requirements of DIN The T piece required is supplied with the unit and the Flowjet flow through valve is optionally available. D ØB Materials omponent Shell onnections Bladder oating Material arbon Steel Stainless Steel Synthetic rubber compound Powder Epoxy A 8-25 litres ØB Technical Specification D Max. working pressure 10 bar Max. vessel operating 70 temperature Factory pre-charge - Vertical range 4.0 bar - nitrogen System water BE EN ISO male connection thread A 33 litre 33 with litres wall bracket PVA8G Flow through potable water expansion vessels 8-33 litres apacity Diameter eight onnection Weight Membrane (Litres) (Ø D mm) ( mm) (inches) (kg) PVA8G G ¾ B 2.7 Fixed PVA12G G ¾ B 3.7 Fixed PVA18G G ¾ B 4.7 Fixed PVA25G G ¾ B 5.7 Fixed PVA33G G ¾ B 6.5 Fixed marked PVA1 Flowjet valve for potable water systems PVA1 ¾ Flowjet valve To place an order T: (Trade sales) T: (OEM sales) E: sales@altecnic.co.uk

11 Vessels - Mini Vessels 1.35 Materials omponent Material Body and inlet connection & 2 litre Stainless steel Body and inlet connection Membrane Noryl polymer hlorobutyl Technical Specification Max. working pressure 10 bar Max. system temperature 90 Pre-charge pressure litre 3.5 bar litre 4 bar - 1 & 2 litre 4 bar A ØB A ØB A ØB 0.16 litre 0.5/1 litre 2 litre Mini expansion vessels litre apacity Diameter eight onnection Weight (Litres) (Ø B mm) ( mm) (A inches) (kg) PV016 PV R ½ 0.34 PV G ½ 0.6 PV G ½ 0.9 PV1 Mini expansion vessel 2 litre apacity Diameter eight onnection Weight (Litres) (Ø B mm) ( mm) (A inches) (kg) PV2W PV2W G ¾ 1.0 PV2Z G ½ 1.0 Mechanical shock arrester Box quantity ½ BSP mechanical type Minimum pressure : 3 bar Altecnic Ltd - aleffi group

12 1.36 Vessels - General/Accessories A Water heater accessory packs A A A A A Water heater pack 1 includes: 1 x ½ PRV at 3.5 bar, 1 x expansion vessel 2 litre, 1 x ½ SRV at 6 bar , 1 x 15mm single check valve Water heater pack 2 includes: 1 x expansion vessel 2 litre, 1 x ½ safety valve, 1 x 15mm single check valve Water heater pack 4 includes: 1 x ½ PRV at 3.5 bar, 1 x expansion vessel 2 litre, 1 x 15mm single check valve Water heater pack 5 includes: 1 x expansion vessel 2 litre, 1 x 15mm single check valve Water heater pack 6 includes: 1 x 22mm x ¾ PRV at 3.5 bar, 1 x SRV push fit at 6 bar Installation packs suitable for installation of single / multipoint water heaters ST Temperature / pressure relief valves onnections Set pressure (bar) Probe length (mm) ST ½ M x 15mm ompression ST ½ M x 15mm ompression ST ½ M x 15mm ompression ST ½ M x 15mm ompression ST ½ M x 15mm ompression ST ½ M x 15mm ompression ST ½ M x 15mm ompression ST ½ M x 15mm ompression ST ¾ M x 22mm ompression ST ¾ M x 22mm ompression ST ¾ M x 22mm ompression ST ¾ M x 22mm ompression ST ¾ M x 15mm ompression ST ¾ M x 22mm ompression ST ¾ M x 22mm ompression ST ¾ M x 22mm ompression ST ½ M Parallel x 15mm ompression 7 97 Pressure and temperature relief valves for use when the system calls for two controls. Designed for use on unvented hot water supply systems. To place an order T: (Trade sales) T: (OEM sales) E: sales@altecnic.co.uk

13 Vessels - General/Accessories 1.37 Tundishes * AP ½ M x ¾ F plastic angle tundish * AP ¾ M x 1 F plastic angle tundish * AP ¾ M x ½ F plastic straight tundish * AL mm x 22mm straight tundish with plastic nuts AL ½ angle aluminium tundish M x F ¾ angle aluminium tundish M x F x 1¼ angle aluminium tundish M x F ¾ straight aluminium tundish F x F ¼ straight aluminium tundish F x F A mm x 1 F plastic straight tundish with nut and olive Suitable for use where air gap or air break is required in sealed or unvented systems. * Altecnic Ltd - aleffi group