New Zip AquaFlo®

Stainless steel cylinders formains pressure hot water

2

AquaFlo IIZip AquaFlo II is a range of direct and indirect stainless steel cylinders designed to provide mainspressure hot water for powerful showers and fast filling baths.

Quick recovery times and high performance insulation ensure that hot water is always availableand delivered as economically as possible.

Manufactured in the UK from high grade duplex stainless steel, Zip AquaFlo II utilises highquality controls for high flow rates and reliability.

Solar compatible options enable Zip AquaFlo II to be integrated into the latest renewabletechnology water heating systems.

Zip AquaFlo II provides:• A full range of capacities from 90 to 300 litres for both direct and indirect applications

• Coil-in-coil heat exchangers ensure quick recovery and maximum effective capacity(up to 96% of the nominal capacity)

• High performance insulation and fast recovery times translate into high efficiency and bigsavings in energy

• External expansion ensuring:• More effective use of the cylinder volume• More usable space around the unit• Reduced maintenance and greater reliability with no ‘air bubble’ to lose

• Easier installation from:• A slim profile and footprint with a diameter of 545mm• The use of standard compression fittings throughout

• Minimal maintenance required due to:• External expansion• No sacrificial anode

• High quality construction, materials and electrical components for longevity and completepeace of mind. Backed by a transferable 25 year on-site parts and labour warranty on thecylinder and 2 year, on-site parts and labour warranty on all other components

• Duplex Stainless Steel cylinder with superior corrosion resistance means years andyears of service from your Zip AquaFlo after which it can be completely recycled

3

Zip products are in daily use in tens of thousands of locations in London and across the UK.

Domestic Applications

Type of property Direct Indirect

Bedsit / 1 Bed AF3120 AF4090

1/2 Beds 1 Bath & Shower AF3150 AF4120

3 Beds 1 Bath & Shower AF3180 AF4150

4 Beds 1 Bath & Shower AF3210 AF4180

4/5 Beds 2 Baths & Showers AF3250 AF4210

4/6 Beds 3 Baths & Showers AF3300 AF4250

Commercial ApplicationsFor commercial applications Zip AquaFlo units should beselected to ensure that sufficient total capacity and flow rateis available for all outlets to be served

Volume of hot water required at 60°C per outlet

Wash basins Up to 5 litres

Sinks 10 to 15 litres

Showers 30 litres (at 10 l/min)

Baths 60 litres

Refer to Technical Data on page 6 to ensure that thecorrect kW loading is selected for the required heat up andrecovery performance

The above are for guidance only and the requirements ofspecific installations should be determined

Siting the UnitZip AquaFlo can be positioned more or less anywhere in thebuilding but it should be remembered that for every 1 metrethat an outlet is above the AquaFlo, the pressure will bereduced by 0.1 bar. If siting outside the heated envelope ofthe building such as in a garage or outbuilding then frostprotection should be provided and exposed pipeworkshould be insulated.

Zip AquaFlo must be supported on a flat base capableof supporting the weight of the cylinder when full. Theminimum recommended cupboard size is 650mm square.

It’s important that consideration is given to access formaintenance of the valves. The immersion heaters are375mm long and access space should be provided fortheir possible future replacement.

Water SupplyAquaFlo is capable of delivering over 50 litres per minutewhen connected to a suitable mains supply. The high qualityinlet control set with a 3 bar operating pressure has beendesigned to make the most of what is available, howeverthe performance of any unvented system is only as goodas the water supply.

In unvented systems both hot and cold services are suppliedsimultaneously from the mains so the maximum possibleon-site water demand must be assessed and the watersupply should be tested to ensure it can meet theserequirements. Consult the local water supplier if necessaryregarding the likely pressure and flow rate availability.

PlumbingFor connection to 22mm mains potable water supply

Minimum water supply 1.5 bar, 20 l/min

Maximum water supply pressure 12 bar

ElectricalTo be wired to a suitably rated double pole fused spur

Installation must comply with current IEE regulations

Connecting Zip AquaFlo Units in ParallelMultiple Zip AquaFlo units can be connected in parallel forapplications where higher storage capacity is required.

To connect in parallel, each Zip AquaFlo should be providedwith a separate cold supply while the hot outlets areconnected to a common pipeline.

Secondary ReturnAll Zip AquaFlo units are suitable for use with secondaryreturn systems.

A dedicated secondary return connection is provided onAquaFlos with a capacity of 210 litres and above. On smallersizes the secondary return can be connected to the incomingsupply.

Always check that the kW loading available on direct units issufficient to recover the heat loss in the secondary circuit inaddition to any hot water drawn off.

InstallationInstallation must be undertaken by a competent installer inaccordance with all national and local Building Regulations.

Zip AquaFlo is intended for floor standing only – refer toTechnical Data on page 6 for weights when full.

Applications and Installation

4

Construction• Direct, indirect and solar compatible unvented waterheaters

• Corrosion resistant Duplex Stainless Steel cylinder

• High performance, low profile coil-in-coil heatexchanger

• High performance CFC-free injected polyurethanefoam insulation

• White plastic coated steel case resistant to scuffing

• External expansion for reliability and ease ofmaintenance

• Cylinder pressure tested to 15 bar

Solar Compatible CylindersZip AquaFlo Solar cylinders have been specifically designedfor use with solar heating systems and feature a highefficiency heat exchanger to extract maximum benefit fromthe solar energy that is available.

Solar compatible cylinders are also available in both directand indirect construction.

Nominal CapacityDirect and Indirect units:90, 120, 150, 180, 210, 250 and 300 litres

Solar Twin Coil and Solar Direct units:150, 180, 210, 250 and 300 litres

Immersion ElementsIncoloy construction 1¾” thread. Length 14” Loading3kW @ 240V

Diagrams Showing Connection Points

Heat Exchanger22mm low profile, high efficiency stainless steelcoil-in-coil

Controls• Thermostat – adjustable up to 65°C

• Over temperature safety cut-out – Manuallyre-settable. Operates at 85°C

• Expansion relief valve – 6 bar

• Temperature and pressure relief valve – 90°Cand 7 bar

• Pressure reducing valve – 3 bar

• Expansion vessel – Pre-charged to 3 bar

• 90 – 150L units – 12L vessel

• 180 – 250L units – 18L vessel

• 300L units – 24L vessel

ApprovalsKIWA approved to UK Water Regulations andUK Building Regulations Part G3 and Part L

Immersion element/thermostat BEAB approvedand CE endorsed

Warranty

On site parts and labour:

25 years transferable on cylinder (conditions apply)

2 years warranty on all other components

Product Specification

5

Aquaflo Direct Aquaflo Indirect and Solar Compatible

38°Immersion*

38°Immersion* 35°Primary Coil

40°Primary Coil

66°SecReturn

45°Cold Inlet 45°Cold Inlet

15°T&P Valve

25°Stat Pocket

Immersion

15°T&P Valve

Immersion

*Multi element options only AF3150S – AF3300S

Technical Data

AquaFlo Direct

Nominal Height Weight Weight Vol within Heat up Heat up Heat up Boost Low level High level StandingCapacity (mm) x Empty Full 10ºC of set 3kW 6kW 9kW re-heat immersion immersion Loss

Model (L) 545 Dia (kg) (kg) temp (L) (mins) (mins) (mins) (mins) elements elements (kWh/day)

AF3090 90 727 21 111 73 76.0 - - - 1 0 1.07

AF3120 120 915 26 146 102 103.0 - - 58.0 1 1 1.23

AF3150 150 1102 33 183 133 134.0 - - 72.0 1 1 1.41

AF3180 180 1290 38 218 163 164.0 - - 82.0 1 1 1.53

AF3210 210 1478 41 251 194 203.0 - - 96.0 1 1 1.80

AF3250 250 1728 46 296 236 248.0 - - 117.0 1 1 2.15

AF3300 300 2041 55 355 288 323.0 - - 145.0 1 1 2.28

AF3150S* 150 1102 33 183 133 134.0 73 57 72.0# 3 or 2 0 or 1 1.41

AF3180S* 180 1290 38 218 163 164.0 88 67 82.0# 3 or 2 0 or 1 1.53

AF3210S* 210 1478 41 251 194 203.0 108 80 96.0# 3 or 2 0 or 1 1.80

AF3250S* 250 1728 46 296 236 248.0 130 95 117.0# 3 or 2 0 or 1 2.15

AF3300S* 300 2041 55 355 288 323.0 168 120 145.0# 3 or 2 0 or 1 2.28

* Supplied with 3 elements and 4 bosses - 3 at low level and 1 at high level. Additional elements are available for installation in the 4th boss.

# If using high level element

AquaFlo Indirect

Nominal Height Weight Weight Vol within Indirect Heat Recovery Boost Low level High level StandingCapacity (mm) x Empty Full 10ºC of set Exchanger Indirect re-heat immersion immersion Loss

Model (L) 545 Dia (kg) (kg) temp (L) (kW) (mins) (mins) elements elements (kWh/day)

AF4090 90 727 23 111 74 16.46 12.0 - 1 0 1.07

AF4120 120 915 30 148 105 16.46 16.0 - 1 0 1.23

AF4150 150 1102 38 186 132 18.55 17.2 - 1 0 1.41

AF4180 180 1290 42 220 160 18.55 20.4 - 1 0 1.53

AF4210 210 1478 45 253 188 18.55 22.0 - 1 0 1.80

AF4250 250 1728 51 299 232 22.00 25.0 117.0 1 1 2.15

AF4300 300 2041 60 357 285 22.00 34.0 145.0 1 1 2.28

AquaFlo Solar Compatible

Nominal Height Weight Weight Vol within Indirect Heat Solar Dedicated Recovery Boost Low level High level StandingCapacity (mm) x Empty Full 10ºC of set Exchanger Heat Solar solar re-heat immersion immersion Loss

Model (L) 545 Dia (kg) (kg) temp (L) (kW) Exchanger Capacity (mins) (mins) elements elements (kWh/day)

Solar Twin Coil

AF5150 150 1102 40 187 132 18.55 16.46 77 25.0* 12.0# 0 1 1.41

AF5180 180 1290 45 222 160 18.55 18.55 95 26.3* 14.8# 0 1 1.53

AF5210 210 1478 48 255 188 22 18.55 101 31.2* 15.5# 0 1 1.80

AF5250 250 1728 53 300 232 22 22.00 107 33.0* 20.0# 0 1 2.15

AF5300 300 2041 63 359 285 22 22.00 121 41.0* 25.0# 0 1 2.28

Solar Direct

AF6150 150 1102 38 186 102 - 16.46 80 25.0* 72.0 1 1 1.41

AF6180 180 1290 42 220 123 - 18.55 100 26.3* 82.0 1 1 1.53

AF6210 210 1478 45 253 143 - 18.55 116 31.2* 96.0 1 1 1.80

AF6250 250 1728 51 299 175 - 22.00 137 33.0* 117.0 1 1 2.15

AF6300 300 2041 60 358 210 - 22.00 160 41.0* 145.0 1 1 2.28

* Re-heat times based on BS12897 parameters with an 80°C primary flow at 15 l/min.

# Using Indirect heat exchanger

Actual performance when installed will vary considerably dependant on the rate of solar or other renewable input, number of panels etc.

6

H1G1

C1

B1A1

H2G2

C3

D2F2 B4A3

H2G2

F3

F2

E1

B3

D2

A3

H1G2

C2

A2

B2F1

D1

Dimensions

Direct Indirect

Solar Twin Coil Solar Direct

7

Cold Inlet Immersion 1 Immersion 2 Bottom Coil Top Coil Stat Pocket Sec Return T&P Valve

Capacity Height Diameter A1 A2 A3 B1 B2 B3 B4 C1 C2 C3 D1 D2 E1 F1 F2 F3 G1 G2 H1 H2

90L 727 545 192 399 – 242 339 – – – – – 299 – – 354 – – – – 515 –

120L 915 545 192 399 – 242 339 – – 519 – – 299 – – 354 – – – – 703 –

150L 1102 545 192 474 399 242 379 702 399 619 – 619 339 299 651 394 354 706 – – 890 890

180L 1290 545 192 474 399 242 379 734 454 719 – 719 374 299 675 394 354 738 – – 1078 1078

210L 1478 545 192 474 474 242 414 839 509 819 – 819 374 374 789 474 429 843 1009 1159 1266 1266

250L 1728 545 192 474 474 242 414 914 584 959 959 959 374 374 863 569 429 918 1259 1409 1516 1516

300L 2041 545 192 474 474 242 414 1039 679 1109 1109 1109 374 374 989 669 429 1043 1509 1609 1829 1829

Zip Heaters (UK) LtdBertie Ward Way, Dereham, Norfolk NR19 1TE

Customer Service Tel: 01362 853181sales@zipheaters.co.ukwww.zipheaters.co.uk

Zip sets new standards in Customer Care with the largest team of directly employed engineers in its sector, providingcomprehensive on-site maintenance, repair and installation packages

The terms ‘Zip’ and ‘Aquaflo’ are registered trade marks of Zip Industries © Zip Heaters (UK) Ltd, 47223 January 2010