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STUART
Installation, Operation & Maintenance
Instructions
Please leave this instruction booklet with the home owner as it contains
important guarantee, maintenance and safety information
Read this manual carefully before commencing installation.
This manual covers the following products:
Aquastor ECO Unvented Cylinder
SAE 130
Pt. No. 44786
SAE 150
Pt. No. 44787
SAE 215
Pt. No. 44788
SAE 255
Pt. No. 44833
Aquator Sigma Unvented Cylinder
SAS 305
Pt. No. 44789
SAS 400
Pt. No. 44856
SAS 500
Pt. No. 44790
2
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Summary of Contents for Stuart Turner Aquastor ECO SAE 130
- Page 1 STUART Installation, Operation & Maintenance Instructions Please leave this instruction booklet with the home owner as it contains important guarantee, maintenance and safety information Read this manual carefully before commencing installation. This manual covers the following products: Aquastor ECO Unvented Cylinder Aquator Sigma Unvented Cylinder SAE 130 SAS 305...
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Page 2: Table Of Contents
PRODUCT DESCRIPTION The Aquastor unvented water heater is a high quality stainless steel unvented cylinder which can provide hot water from a cold mains water supply of between 1.5 bar and 16 bar. The indirect heat exchanger surfaces are designed to provide a rapid heat up time. The unit comes complete with all the necessary safety equipment to comply with legislation governing the installation of such systems. - Page 3 Warning: If cold/warm water exits from the temperature and pressure relief valve (TPV) or from the pressure relief valve (PRV) call your installer or the Stuart Turner TechAssist team. If very hot water exits from either valve switch off the heat source immediately and isolate the electricity supply to the cylinder and separate heat source.
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Page 4: Checklist
CHECKLIST IMPORTANT: With the cylinder removed from its packaging check for any damage prior to installation. If any damage is found contact Stuart Turner Ltd within 24 hours of receipt. Note: This image is for reference only. Fig. 1 Item Description Item Description Cylinder (with factory fitted 3 kW Heating... -
Page 5: Important Facts - Read Before Commencing Installation
1 IMPORTANT FACTS: READ BEFORE COMMENCING CYLINDER INSTALLATION 1.11 Benchmark scheme checklist Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer’s instructions by competent persons. -
Page 6: Location
If this facility is not required leave the cap on. 2.16 Check water pressure & flow rates: Stuart Turner suggests 1.5 bar pressure & 20 litres/minute flow rate to be the minimum requirements for satisfactory operation. - Page 7 2.19 Inlet group: (Cold water valve) installed as shown (Fig. 5). 2.20 Primary circuit: The motorised valve supplied and the thermal cut-out (high limit stat) must be fitted to the primary flow (Use compression fittings only). 2.21 Operation of the cut-out & motorised valve: To comply with regulations and to prevent the temperature reaching 100 °C the thermal cut-out supplied must be fitted.
- Page 8 2.23 External expansion vessel: This smaller tank is connected to the cold-water inlet side of the vessel. Mount the tank according to separate manufacturer’s instructions provided with the external expansion vessel. A suitable expansion vessel with a pre-charge pressure of 3.5 bar is supplied with Aquastor Eco &...
- Page 9 Pressure reducing Expansion relief valve set at 3 bar valve (safety valve) set at 6 bar Expansion vessel To tundish To water Water heater flow Balanced take off port Drain valve Flexible hose Fig. 4 Inlet group - external expansion Cont ...
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Page 10: Pipework Connections
G3 Guidance Section 3.5 The discharge pipe (D1) from the vessel up to and including tundish is not supplied by Stuart Turner Ltd. Where otherwise the installation should include the discharge pipe(s) (D1) from the safety device(s). In either case... - Page 11 3.12 The discharge pipe (D2) The discharge pipe (D2) from the tundish should: Have a vertical section of pipe at least 300 mm long below the tundish before any elbows or bends in the pipework (see Fig. 6). Be installed with a continuous fall of at least 1 in 200 thereafter. The discharge pipe (D2) should be made of metal or other material that has been demonstrated to be capable of safely withstanding temperatures of the water discharged and is clearly and permanently marked to identify the...
- Page 12 IMPORTANT: The discharge will consist of scalding water and steam. Asphalt, roofing felt and non-metallic rainwater goods may be damaged by such discharges. Fig. 6 Typical discharge pipe arrangement 3.15 Table 1 - Sizing of copper discharge pipe (D2) for common temperature & pressure relief valve sizes.
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Page 13: Electrical Installation
4 ELECTRICAL INSTALLATION 4.11 Regulations: The electrical installation must be carried out in accordance with the current national electrical regulations and installed by a qualified person. 4.12 Before starting work on the electrical supply ensure power supply is isolated. 4.13 DO NOT allow the supply cord to contact hot surfaces. 4.14 DO NOT switch the power on until the unit has been filled with water and all wiring has been earthed (see Figures 7, 8, 9 &... - Page 14 Fig. 8 Y Plan wiring diagram 4.15 Fitting the immersion heaters: The heating element is fitted with a control thermostat which allows the water temperature to be set and a thermal cut- out for safety (see Fig. 9). The unit is designed to screw into the 1¾” boss fitted to the unit.
- Page 15 4.16 Fitting the twin thermostat: Refer to wiring diagrams for correct installations. Fig. 10 Cylinder thermostat & thermal cut-out connections 4.17 Two port valve: The two port valve should be wired to the thermostat (see Figs. 7 or 8 depending on required configuration). Connect the live supply to the thermo cut-out and connect the brown wire of the two port valve to terminal 2 on the thermostat (see Fig.
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Page 16: Commissioning
5.14 User Instructions: Stuart Turner Limited is a licensed member of the Benchmark Scheme, which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety, efficiency and performance. -
Page 17: Maintenance
Both the primary and secondary systems will contain very hot water that will scald, therefore care should be taken when opening any joints, seals or valves. 6.13 Only use spare parts authorised by Stuart Turner Ltd. The use of other parts will invalidate the warranty. -
Page 18: Technical Specification
7 TECHNICAL SPECIFICATION The diagrams on the following pages show the standard range of Aquastor vessels. All dimensions are in millimeters unless otherwise stated. (Tolerance +/- 10mm) All unvented installations must comply with local building regulations. England & Wales: G3 Building Regulations Scotland: Technical Standard P3 Northern Ireland: Building Regulation P5 Aquastor coil data is based on a max primary flow temperature of 80 °C. - Page 19 Dimensions (mm) Model capacity (kW) SAS 305 2028 SAS 400 1640 SAS 500 2000 Fig. 13 Stuart Turner reserve the right to amend the specification in line with its policy of continuous development of its products. Cont ... - 19 -...
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Page 20: Trouble Shooting
8 TROUBLE SHOOTING GUIDE Warning: Disconnect electrical supply before removing any electrical equipment cover. Symptoms Probable Cause Recommended Action The cylinder cools down One pipe circulation in the Install a non-return valve as close as possible to the overnight case of short pipe networks cylinder. -
Page 21: Guarantee
9 THE AQUASTOR GUARANTEE Congratulations on purchasing a Stuart Turner product. We are confident this product will provide many years of trouble free service as all our products are manufactured to the very highest standard. All Aquastor products are guaranteed to be free from defects in materials or... - Page 22 Proof of purchase should accompany the returned unit to avoid delay in investigation and dealing with your claim. You should obtain appropriate insurance cover for any loss or damage which is not covered by Stuart Turner Ltd in this provision. Please record here for your records. CYLINDER MAKE & MODEL.
- Page 23 MAINS PRESSURE HOT WATER STORAGE SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the storage system as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.
- Page 24 UNVENTED SYSTEMS ONLY Where is the pressure reducing valve situation (if fitted)? What is the pressure reducing valve setting? Has a combined temperature and pressure relief valve and expansion valve been fitted and discharge tested? The tundish and discharge pipework have been connected and terminated to Part G of the Building Regulations Are all energy sources fitted with a cut out device? Has the expansion vessel or internal air space been checked?
- Page 25 SERVICE RECORD It is recommended that your hot water system is serviced regularly and that the appropriate Service Record is kept. SERVICE PROVIDER Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions. SERVICE 1 SERVICE 2 Date:...
- Page 26 SERVICE 9 SERVICE 10 Date: Date: Engineer Name Engineer Name Company Name Company Name Tel No. Tel No. Comments Comments Signature Signature SERVICE 11 SERVICE 12 Date: Date: Engineer Name Engineer Name Company Name Company Name Tel No. Tel No. Comments Comments Signature...
- Page 27 - 27 -...
- Page 28 Stuart Turner Ltd, Henley-on-Thames, Oxfordshire RG9 2AD ENGLAND Tel: +44 (0) 1491 572655, Fax: +44 (0) 1491 573704 info@stuart-turner.co.uk www.stuart-turner.co.uk Issue No. 4919/1-03 Pt. No. 20627...
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