Unvented water heaters

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Amanda Ferguson
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1 Unvented water heaters Pioneers, innovators and market leaders in efficient unvented water heating EXCESOR esigned and manufactured in the UK

thermostat win thermostat with independent reset, 30-70ºC Safety device Factory fitted with 7bar/90ºC pressure & temperature relief valve Connections Secondary return on 175 & above * 50mm on 400 and

2 Excelsior Specification guide Product construction - typical mmersion heater 3kw, 240V, 1ph, ncoloy 825, with thermostat incl. cut-out hermal insulation CFC/HCFC free, (OP=0, GWP=1), 60mm fire retardant insulation* Outer casing P200 Plastisol nner cylinder uplex stainless steel Heating coil High performance, finned ndirect thermostat win thermostat with independent reset, 30-70ºC Safety device Factory fitted with 7bar/90ºC pressure & temperature relief valve Connections Secondary return on 175 & above * 50mm on 400 and 500 vessels Product specification nlet diffuser For optimal blending of cold & hot water, see fig. 1 Expansion WX - 3 bar internal expansion with echnology, the self-sustaining air-gap system Pressure test Secondary return Approvals Guarantee All other ranges - 3 bar external expansion ested to 10 bar Standard fit on models 175 & above BBA, CE, WRAS, KWA, SO, WRC nternal cylinder 25 years* Ancillary components 1 year irect thermostat Element thermostat, nominal setting 60ºC ndirect model irect model Manufacturing Horizontal & Slimline Renewables range * Commercial cylinders carry 5 years guarantee 22mm diameter stainless steel high performance coil & outlet with 1 immersion heater 80 fitted with 1 immersion heater; fitted with 2 immersion heaters All UK using state-of-the-art robot technology Suitable for roof voids & 450mmØ specification Solar, heat pump and buffer vessels Fig.1 Features & Benefits Specifier/builder features nstaller benefits Consumer benefits 1 uplex stainless steel No sacrificial anode ow maintenance 2 UK designed & manufactured ocal support Spares and service back up 3 Butt welded joints Eliminates corrosion ong cylinder life 4 nlet diffuser Maximises hot water Maximises hot water 5 High performance heating coil Fast re-heat times Constant hot water 6 Minimal heat loss 60mm insulation with outer casing ower energy use 7 High flow rates No shower pumps Fast filling baths 8 Balanced hot & cold water Mains pressure to all outlets High performance showering 9 Pre-plumbed available Ease of installation Minimal disruption 10 win or triple coil available Suits all heat sources Useable with solar or heat pumps 11 Excelsior i with echnology Reduces installation time Maintenance-free 12 Hi-Flo Excelsior i with echnology Suits large domestic/commercial Higher flow rates with 3S technology 2 Fabdec Water heating systems

3 Excelsior Heating performance Capacity Vessel Standing Heat oss (kw/24h) Reheat time after 70% draw off* irect ndirect s (kw) Weight (kg) Weight (kg) Full ime to heat from cold to 65ºC* Reheat time after 70% draw off* ime to heat from cold to 65ºC* Primary irect ndirect irect ndirect * ime (minutes) ** Vessel Standing Heat oss (kw/24h) Reheat time after 70% draw off* Solar irect Solar ndirect s (kw) Weight (kg) Weight (kg) Full ime to heat from cold to 65ºC* Reheat time after 70% draw off* ime to heat from cold to 65ºC* Aux / Boiler Primary Solar irect Solar ndirect Solar irect * ime (minutes) Solar ndirect 3

Excelsior WX Excelsior i with technology Current issues with expansion in unvented water heaters: Hot Expansion vessel Hot Air bubble Hot Floating baffle Cold Cold Cold External expansion Bulky, has

4 Excelsior WX Excelsior i with technology Current issues with expansion in unvented water heaters: Hot Expansion vessel Hot Air bubble Hot Floating baffle Cold Cold Cold External expansion Bulky, has more parts, requires more space Requires longer on-site installation Needs replenishment nternal expansion ntegrated air bubble Needs frequent replenishment akes only low pressure Protected nternal expansion ntegrated air bubble Protected with a plastic baffle Could need replenishment as baffle seal is not fully 100% How 3S technology works: 3S technology uses fluid dynamics to create negative pressure known as the Venturi effect. With precision design this configuration draws enough air to recharge the air gap as the tank is filled and requires no future maintenance - a truly self-sustaining system: Air is drawn automatically to replenish the internal air gap Aerated Water Cold Water Feed Key Features No replenishment or external expansion required ong life with no moving parts 60mm environmentally friendly foam 3 bar water pressure at the outlet (subject to incoming pressure) Positive stated water volume tolerance ensuring maximum available water at any given time. - See working animation Fabdec 3S NEW - Hi-Flo in 400 & 500l indirect models 28mm inlet/outlet & 28mm Venturi for higher flow rates 4 Fabdec Water heating systems

Excelsior WX Excelsior i with technology irect cylinder H2 ndirect cylinder CF1 CR1 S1 irect cylinder with 3S internal expansion (self-sustaining air-gap system) Size H2 80 703 576 182 222 196-130

500 1896 756 220 495 235 891 ndirect cylinder with internal expansion (self-sustaining air-gap system) Size CR1 CF1 S1 Rating 80 703 576 182 222 196 213 88 246 14.

5 Excelsior WX Excelsior i with technology irect cylinder H2 ndirect cylinder CF1 CR1 S1 irect cylinder with 3S internal expansion (self-sustaining air-gap system) Size H ndirect cylinder with internal expansion (self-sustaining air-gap system) Size CR1 CF1 S1 Rating kW kW kW kW kW kW kW 400* kW 500* kW * hese vessels are also available with 28mm diameter stainless steel high performance coil & outlet for high water flow 5

6 Excelsior WE With external expansion irect cylinder H2 ndirect cylinder CF1 S1 CR1 irect cylinder with 3 bar external expansion Size H N/A ndirect cylinder with 3 bar external expansion Size CR1 CF1 S1 Rating kW kW kW kW kW kW kW kW kW 6 Fabdec Water heating systems

Excelsior WS Solar range Solar irect cylinder Solar ndirect cylinder O SP2 O SP2 H2 SR SR CF2 S2 CF1 CR2 CF1 CR1 SP1 S1 CR1 SP1 S1 Solar irect cylinder with external expansion Size CR1 CF1 SP1 S1 SR

75m 2 56 175 1243 578 183 226 213 267 183 344 584 473 402 226 226 1.1m 2 69 215 1485 578 183 226 213 267 183 337 587 665 476 226 226 1.

7 Excelsior WS Solar range Solar irect cylinder Solar ndirect cylinder O SP2 O SP2 H2 SR SR CF2 S2 CF1 CR2 CF1 CR1 SP1 S1 CR1 SP1 S1 Solar irect cylinder with external expansion Size CR1 CF1 SP1 S1 SR H2 SP2 O Solar Surface Area* m m m m m m 2 69 Solar Volume Solar ndirect cylinder with external expansion Size CR1 CF1 SP1 CR2 CF2 S1 SR SP2 S2 O Solar Surface Area* Aux Surface Area* m m kW m m kW m m kW m m kW m m kW m m kW 69 nnovative hot water outlet to reduce thermal losses. *Other coil sizes available upon request. Optional secondary return available. Aux Rating Solar Volume 7

Excelsior W Slimline irect / ndirect range H2 H2 CF1 CF1 S1 CR1 S1 CR1 Super-Slimline irect cylinder Ø 450mm Slimline irect cylinder Ø 500mm Super-Slimline ndirect cylinder Ø 450mm Slimline ndirect

244 2324 500 179 205 193 1158 Slimline ndirect cylinder Ø 500mm with external expansion Size CR1 CF1 S1 Rating 130 1324 500 179 205 193 209 320 360 14.6kW 150 1476 500 179 205 193 209 320 360 14.

0kW Super-Slimline irect cylinder Ø 450mm with external expansion Size H2 130 1707 450 156 200 170 841 150 1977 450 156 200 170 1113 175 2281 450 156 200 170 1422 Super-Slimline ndirect cylinder Ø

8 Excelsior W Slimline irect / ndirect range H2 H2 CF1 CF1 S1 CR1 S1 CR1 Super-Slimline irect cylinder Ø 450mm Slimline irect cylinder Ø 500mm Super-Slimline ndirect cylinder Ø 450mm Slimline ndirect cylinder Ø 500mm Slimline irect cylinder Ø 500mm with external expansion Size H Slimline ndirect cylinder Ø 500mm with external expansion Size CR1 CF1 S1 Rating kW kW kW kW kW Super-Slimline irect cylinder Ø 450mm with external expansion Size H Super-Slimline ndirect cylinder Ø 450mm with external expansion Size CR1 CF1 S1 Rating kW kW kW SUPER-SMNE vessels are also available with /s in RENEWABES configuration. 8 Fabdec Water heating systems

Excelsior WZ Horizontal vessels Horizontal irect Cylinder Size

Horizontal ndirect Cylinder Size A B C Aux m 2 130 957 478 298

75 215 1484 742 492 0.75 255 1752 876 626 0.

75 Horizontal win Cylinder Size A B C Solar m 2 Aux m 2 150

9 Excelsior WZ Horizontal vessels Horizontal irect Cylinder Size A Horizontal ndirect Cylinder Size A B C Aux m Horizontal win Cylinder Size A B C Solar m 2 Aux m

Excelsior WHP Heat Pump range Heat Pump Single Cylinder Heat Pump win Cylinder Heat Pump single coil cylinder with external expansion Size A B C E F HP Surface Area* 150 575 1085 225 284 182 678 2m 2

10 Excelsior WHP Heat Pump range Heat Pump Single Cylinder Heat Pump win Cylinder Heat Pump single coil cylinder with external expansion Size A B C E F HP Surface Area* m m m m m m m 2 Heat Pump twin coil cylinder with external expansion Size A B C E F G HP Surface Area* Solar Surface Area m 2 1.1m m 2 1.1m m 2 1.1m m 2 1.1m m 2 1.1m 2 Standard coil inlet and outlet diameter 28mm (N25) Other vessel sizes available upon request. *Other coil sizes available upon request. Optional secondary return available. 10 Fabdec Water heating systems

Excelsior W & WB Commercial & Buffer Vessels he high performance and design values of the Excelsior vessel can also be obtained in a commercial/bespoke format, now with 90mm insulation (OP=0, GWP=1).

11 Excelsior W & WB Commercial & Buffer Vessels he high performance and design values of the Excelsior vessel can also be obtained in a commercial/bespoke format, now with 90mm insulation (OP=0, GWP=1). hese vessels can be built to the requirements of the specifier; with connection bosses, coils, inlets, outlets, pockets and ancillary equipment all located and sized to your specification. Connection Bosses Size & location s ength Materials Surface area Positioning nlets / Outlets Size & location Pockets (eg: temperature sensor) Size & location Ancillary equipment Expansion kits, gauges, pumps etc... Water heating vessels are available up to 10,000 litres & buffer/storage vessels up to 32,000 litres esign service available on request Commercial Vessel Size A B Rating " 1" Ø28 27kW " 1" Ø28 27kW " 1" Ø28 54kW /2" 1 1 /2" Ø28 54kW /2" 1 1 /2" Ø28 54kW /2" 1 1 /2" Ø28 54kW /2" 1 1 /2" Ø28 54kW /2" 1 1 /2" Ø28 54kW " 2" Ø28 54kW " 2" Ø28 54kW escription 1 Auxiliary (½" BSP) connection 2 Auxiliary (½" BSP) connection 3 Auxiliary (½" BSP) Connection w 4 nlet (1",1½", 2" BSP) Connection 5 mmersion Heater (2 ¼" BSP) Connection 6 Outlet (1",1½", 2" BSP) Connection 7 emperature & Pressure Relief Valve (¾" BSP) Connection 8 Connections (Upper and ower) 11

Also from Fabdec: Pre-plumb 175l - 305l indirect wo

add expansion vessel Pre-wired A comprehensive range

com/waterlanding Fabdec td Grange Road Ellesmere

627200 Fax: +44 (0) 1691 627222 Email: sales@fabdec.

12 Also from Fabdec: Pre-plumb 175l - 305l indirect wo heating zones standard ntegrated Venturi - no need to add expansion vessel Pre-wired A comprehensive range of water heating spares Fabdec td Grange Road Ellesmere Shropshire SY12 9G Accreditation: el: +44 (0) Fax: +44 (0) sales@fabdec.com ndustrial Associate Fabdec 3S Water heating systems Excelsior Brochure 2017_v1

Unvented water heaters

Unvented water heaters Pioneers, innovators and market leaders in efficient unvented water heating EXCESOR Water heating systems Excelsior Specification guide Product construction - typical mmersion heater