UNVENTED MAINS PRESSURE WATER HEATER 100, 120, 150, 170, 210, 250 and 300 LITRE CAPACITY DIRECT AND INDIRECT MODELS INSTALLATION AND SERVICING INSTRUCTIONS IMPORTANT: PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE COMMENCING INSTALLATION. PLEASE LEAVE THIS MANUAL WITH THE CUSTOMER FOR FUTURE REFERENCE.
Contents Introduction.......................... 3 GENERAL REQUIREments........... 3 Installation – General . ........ 5 INSTALLATION - DISCHARGE ...... 8 Installation - DIRECT UNITS.... 12 Installation - INDIRECT UNITS 13 Commissioning....................... 15 Maintenance............................ 16 User Instructions................... 17 Fault Finding & Servicing...... 18 SPARE PARTS................................ 20 GUARANTEE................................ 22 ENVIROMENTAL INFORMATION.. 22 Heat loss.
Introduction The Santon PremierPlus cylinder is a purpose designed unvented water heater. The unit has a stainless steel inner vessel, which ensures an excellent standard of corrosion resistance. The outer casing is a combination of resilient thermoplastic mouldings and plastic coated corrosion proofed steel sheet. All products are insulated with CFC free polyurethane foam to give good heat loss performance.
WATER SUPPLY Bear in mind that the water supply to the property will be supplying both the hot and cold water requirements simultaneously. It is recommended that the maximum water demand is assessed and the water supply checked to ensure this demand can be satisfactorily met. NOTE: A high water pressure will not always guarantee high flow rates. Wherever possible the PremierPlus supply pipe should be 22mm. We suggest the minimum supply requirements should be 1.
Installation – General PIPE FITTINGS All pipe fittings are made via 22mm compression fittings directly to the unit. The fittings are threaded 3/4”BSP male parallel should threaded pipe connections be required. COLD FEED A 22mm cold water supply is recommended, however, if a 15mm (1/2”) supply exists which provides sufficient flow, this may be used (although more flow noise may be experienced).
EXPANSION VESSEL The expansion vessel accommodates expansion that results from heating the water inside the unit. The expansion vessel is pre-charged at 3.5 bar. The expansion vessel must be connected between the expansion valve (see Fig. 2, page 5) and the PremierPlus cylinder (see Fig. 6, page 11). The location of the expansion vessel should allow access to recharge the pressure as and when necessary, this can be done using a normal car foot pump.
Fig 4 - General Dimensions Table 2 - Dimensions and Performance TYPE NOMINAL CAPACITY (litres) Direct 100 100 120 300 315 315 315 250 300 315 210 250 315 170 210 A 150 170 Indirect 120 150 DIMENSIONS (mm) 315 315 B C D 306 493 784 354 500 784 306 616 906 354 616 906 306 800 1090 354 800 1090 306 925 1216 354 927 1216 306 1184 1474 354 1184 1474 306 1437 1726 354 1439 1726 306 1751 2040 354 1754 2040 COIL
INSTALLATION - DISCHARGE It is a requirement of Building Regulation G3 that any discharge from an unvented system is conveyed to where it is visible, but will not cause danger to persons in or about the building. The tundish and discharge pipes should be fitted in accordance with the requirements and guidance notes of Building Regulation G3. The G3 Requirements and Guidance section 3.50 - 3.63 are reproduced in the following sections of this manual.
(D2) to be connected. 3.
Table 3 - Sizing of copper discharge pipe (D2) for common temperature relief valve outlet sizes Va lve outle t size Minim um size of discha rge pipe D1 G1/2 15mm G3/4 22mm G1 28mm Minim um size of discha rge pipe D2 from tundish Ma x im um re sista nce a llow e d, e x pre sse d a s a le ngth of stra ight pipe (I.E .
Fig 6 - Typical installation - schematic To hot outlets T&P relief valve Expansion vessel Balanced cold water connection (if required) Cold water combination valve Boost element/ control housing (PP120E to PP300E models only) Isolating valve (not supplied) Mains water supply Element/ controls housing Secondary return (if required) use swept tee Primary return Primary flow NOTE: Primary heating coil fitted on PP100B to PP300B models only Inlet Drain cock (not supplied) Tundish Discharge pipe F
Fig 7 - Direct Electrical connections (schematic) Direct Wiring Layout Fig 8 - Adjustment details L = RED THERMAL CUT-OUT RESET BUTTON N = BLACK SPINDLE POSITIONS = MINIMUM TEMP 10ºC = MAXIMUM TEMP 72ºC = APPROX 60 °C N L ROTATE SPINDLE CLOCKWISE FOR TEMPERATURE INCREASE AND COUNTER CLOCKWISE FOR TEMPERATURE DECREASE 1.
Control Housing Details Fig 9 - Indirect Electrical connections (schematic) Element Connections 1 2 3 L N installation - INDIRECT UNITS PLUMBING CONNECTIONS Indirect control wiring 1.5mm² 3 Core HOFR sheathed cable PremierPlus indirect cylinders require the following pipework connections. • Cold water supply to and from inlet controls. • Outlet to hot water draw off points. • Discharge pipework from valve outlets to tundish • Connection to the primary circuit. All connections are 22mm compression.
Fig. 10: Schematic wiring diagram - Basic 2 x 2 port valve system - ‘S-Plan Premier Plus terminal block 2 1 3 3 Zone valve (HTG) Room stat Zone valve (DHW) (supplied) G Br Bl 0 GY 1 3 2 G Br Bl 0 2 1 1 2 3 L (Supply) N 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 HTG ON L N DHW ON Programmer Junction box L 2 3 1 2 3 L N 2 2 3 N Boiler Pump NOTES: Control terminal numbering may differ from those shown. Refer to instructions with controls selected.
Commissioning At the time of commissioning, please ensure all relevant sections of the Benchmark Checklist, (Page 24 and 25) of this document are completed. FILLING THE UNIT WITH WATER • Check expansion vessel pre-charge pressure. The vessel is supplied precharged to 3.5 bar to match the control pressure of the pressure reducing valve. The precharge pressure is checked using a car tyre gauge by unscrewing the plastic cap opposite the water connection.
Maintenance MAINTENANCE REQUIREMENTS Unvented hot water systems have a continuing maintenance requirement in order to ensure safe working and optimum performance. It is essential that the relief valve(s) are periodically inspected and manually opened to ensure no blockage has occurred in the valves or discharge pipework. Similarly cleaning of the strainer element and replacement of the air in the expansion vessel will help to prevent possible operational faults.
User Instructions WARNINGS IF WATER ISSUES FROM THE TEMPERATURE/PRESSURE RELIEF VALVE ON THE PREMIERPLUS CYLINDER SHUT DOWN THE BOILER. DO NOT TURN OFF ANY WATER SUPPLY. CONTACT A COMPETENT INSTALLER FOR UNVENTED WATER HEATERS TO CHECK THE SYSTEM. DO NOT TAMPER WITH ANY OF THE SAFETY VALVES FITTED TO THE PREMIERPLUS SYSTEM. IF A FAULT IS SUSPECTED CONTACT A COMPETENT INSTALLER.
Fault Finding & Servicing IMPORTANT • After servicing, complete the relevant Service Interval Record section of the Benchmark Checklist located on page 24 and 25 of this document. • Servicing should only be carried out by competent persons in the installation and maintenance of unvented water heating systems. • Any spare parts used MUST be authorised Santon parts. • Disconnect the electrical supply before removing any electrical equipment covers.
Table 4 - Fault finding chart Fault No hot water flow Possible Cause Remedy Mains water supply off Check and open stop cock Strainer blocked Turn off water supply.
SPARE PARTS A full range of spare parts are available for the PremierPlus range. Refer to the Techincal Data label on the unit to identify the model installed and ensure the correct part is ordered. Table 5 - Spares list DESCRIPTION PART NO.
Fig.
GUARANTEE WARNING: Should the factory fitted temperature and pressure relief valve be tampered with or removed your guarantee will be invalidated. Neither the distributor nor manufacturer shall be responsible for any consequential damage howsoever caused. Guarantee Terms Santon guarantees the PremierPlus against faulty manufacture or materials for a period of 2 years from the date of purchase including parts and labour.
HEAT LOSS Table 6: Standing heat losses (based on an ambient air temperature of 20°C and a stored water temperature of 65°C) Nominal Capacity (Litres) Standing Heat Loss per day (kWh/24h) per year (kWh/365d) 100 1.14 416.1 120 1.25 456.3 150 1.45 529.3 170 1.63 595.0 210 1.91 697.2 250 2.22 810.3 300 2.52 919.
Notes: 26
Notes: 27
Spares Stockists Electric Water Heating Co. 2 Horsecroft Place Pinnacles Harlow Essex CM19 5BT Tel: 0845 0553811 E-Mail: sales@ewh.co.uk SPD Special Product Division Units 9 & 10 Hexagon Business Centre Springfield Road Hayes Middlesex UB40 0TY Tel: 0208 5730574 Parts Center Network 65 Business Park Bentley Wood Way Burnley Lancashire BB11 5ST Tel: 01282 834403 www.partscenter.co.
