andrews STOR-SS1000-8-S, Installation And Service Manual

Page 1: ......

Page 2: ...fety Regulations 1993 All installation and service on Andrews Water Heaters must be carried out by properly qualified personnel and therefore no liability can be accepted for any damage or malfunction caused as a result of intervention by unauthorised personnel Andrews Water Heaters policy is one of continuous product improvement and therefore the information in this manual whilst completely up to...

Page 3: ... Dimensions and Connections 3 3 1 STOR SS300 8 S 3 3 2 STOR SS500 8 S 3 3 3 STOR SS800 1000 8 S 3 3 4 STOR SS300 8 T 3 3 5 STOR SS500 8 T 3 3 6 STOR SS800 1000 8 T 3 4 Electrical Diagram 4 Description of Product 4 1 General Description 4 2 Operation Principle 5 Before Installation 5 1 Installation Regulations 5 2 Installation Requirements 5 2 1 Water Supply 5 2 2 Outlet Terminal Fittings Taps etc ...

Page 4: ...ntrols 7 3 4 Operational Faults 8 Maintenance 8 1 General 8 1 1 Maintenance Requirements 8 2 Standard Inspection Maintenance Operations 8 2 1 Inspection 8 2 2 Safety Valve Operation 8 2 3 Strainer 8 2 4 Expansion Vessel Charge Pressure 8 2 5 Re Commissioning 9 Troubleshooting 9 1 Fault Finding 9 1 1 Important 10 Decommissioning 10 1 Decommissioning Procedure 10 2 Environmental Information 10 3 WEE...

Page 5: ...andard P3 Scotland or Building Regulation P5 Northern Ireland and the Water Fitting Regulations England and Wales or Water Byelaws Scotland 1 2 Symbols Used In these instructions various risk levels are employed to draw the user s attention to particular information In doing so we wish to safeguard the user avoid hazards and guarantee the correct operation of the appliance Danger Risk of a dangero...

Page 6: ...ndards Perform the initial start up and carry out any checks necessary Complete the commissioning checklist Explain the installation to the user If maintenance is necessary warn the user of the obligation to check the appliance and maintain it in good working order Give all the instruction manuals to the user 1 3 3 Users liability To guarantee optimum operation of the appliance the user must respe...

Page 7: ...d with the cylinder Before any work switch off the mains supply to the appliance Do Not switch on if there is a possibility that the water in the cylinder is frozen Warning When handling the unit take appropriate precautions for the weight of the unit Caution Annual maintenance is recommended by a competent person See Weights can be found in section 3 1 page 8 Warning If water discharges from the ...

Page 8: ...33 1144 384 610 933 1145 Weight empty kg Kg 85 117 164 189 93 126 175 200 Max design pressure Bar 8 8 8 8 8 8 8 8 Nominal operating pressure Bar 6 6 6 6 6 6 6 6 Expansion relief valve setting Bar 8 8 8 8 8 8 8 8 Temperature and pressure Bar C 10 95 10 95 10 95 10 95 10 95 10 95 10 95 10 95 relief valve setting Maximum primary pressure coil Bar 25 25 25 25 25 25 25 25 Maximum working temperature C ...

Page 9: ...T connection 3 4 Female AISI 316 10 Side gasket EPDM 11 Top gasket EPDM 12 Probe tube for sensor AISI 316 13 Recirculation pipe AISI 316 14 Valve P T 3 4 10 bar 15 Side stainless steel disk AISI 316 D H W Tank Material AISI 316 chemically descaled and passivated Max working pressure 8 bar Max working temperature 70 C Volume 291L Heating coils Material AISI 316 Max working pressure 25 bar Max worki...

Page 10: ...ulation pipe AISI 316 14 Valve P T 1 1 4 10 bar 15 Side stainless steel disk AISI 316 D H W Tank Material AISI 316 chemically descaled and passivated Max working pressure 8 bar Max working temperature 70 C Volume 484L Heating coils Material AISI 316 Max working pressure 25 bar Max working temperature 90 C Heat exchange area 1 8m2 Volume 13 8L Thermally Insulated Polyurethane foam C F C free Densit...

Page 11: ...descaled and passivated Max working pressure 8 bar Max working temperature 70 C Volume mod 800 769L Volume mod 1000 955L Heating coils Material AISI 316 Max working pressure 25 bar Max working temperature 90 C Heat exchange area Mod 800 2 7m2 Mod 1000 3 3m2 Volume mod 800 20 8L Volume mod 1000 24 7L Thermally Insulated Polyurethane foam C F C free Density 45 Kg m3 Equipments White outer lining Top...

Page 12: ...ostat Technical Characteristics Connections 1 Cold water inlet draining 1 Male AISI 316 2 D H W outlet 1 Male AISI 316 3 Recirculation 1 Male AISI 316 4 Upper primary circuit inlet 1 Male AISI 316 5 Upper primary circuit outlet 1 Male AISI 316 6 Lower primary circuit inlet 1 Male AISI 316 7 Lower primary circuit outlet 1 Male AISI 316 8 Side connection 1 1 2 Male AISI 316 9 Valve P T connection 3 ...

Page 13: ...tat Technical Characteristics Connections 1 Cold water inlet draining 1 Male AISI 316 2 D H W outlet 1 Male AISI 316 3 Recirculation 1 Male AISI 316 4 Upper primary circuit inlet 1 Male AISI 316 5 Upper primary circuit outlet 1 Male AISI 316 6 Lower primary circuit inlet 1 Male AISI 316 7 Lower primary circuit outlet 1 Male AISI 316 8 Side connection 1 1 2 Male AISI 316 9 Valve P T connection 1 1 ...

Page 14: ... inlet draining 1 1 4 Male AISI 316 2 D H W outlet 1 1 2 Male AISI 316 3 Recirculation 1 1 2 Male AISI 316 4 Upper primary circuit inlet 1 Male AISI 316 5 Upper primary circuit outlet 1 Male AISI 316 6 Lower primary circuit inlet 1 Male AISI 316 7 Lower primary circuit outlet 1 Male AISI 316 8 Side connection 1 1 2 Male AISI 316 9 Valve P T connection 1 1 4 Female AISI 316 10 Side gasket EPDM 11 T...

Page 15: ...e dial When mounting it again make sure that the position of the screws is correct 6 Turn the thermostat round from the back part of the control panel without the need to disconnect any wires On the back part of the thermostat there is a compartment marked with an S Press the tab inside the compartment with a fine object to reset the thermostat 7 Reverse the above steps to reassemble the thermosta...

Page 16: ...be purchased at the same time If this kit isn t purchased it could invalidate the warranty of the cylinder 4 Description of Product 4 1 General Description The unvented cylinder is used to heat and store hot water for use in commercial applications To provide pressure to the tap or shower an unvented unit uses the incoming mains water pressure To do this the cylinder is sealed and not vented Howev...

Page 17: ... overheating A 28mm cold water supply is recommended however if a smaller supply exists which provides sufficient flow this may be used although more flow noise may be experienced The higher the available pressure and flow rate the better the system performance See Technical Data Table for cylinder operating pressures 5 2 2 Outlet terminal fittings taps etc The cylinder can be used with most types...

Page 18: ...he cylinder must be vertically floor mounted Although location is not critical the following points should be considered The cylinder should be sited to ensure minimum dead leg distances particularly to the point of most frequent use Avoid siting where extreme cold temperatures will be experienced All exposed pipe work should be insulated The discharge pipework from the safety valves must have min...

Page 19: ...pansion vessel should allow access to recharge the pressure as and when necessary A suitable draining tap should be installed in the cold water supply to the cylinder between the expansion valve and the heater at as low a level as possible It is recommended that the outlet point of the drain pipework be at least 1 metre below the level of the heater this can be achieved by attaching a hose to the ...

Page 20: ...ing in the correct direction The expansion relief valve should be installed with the discharge pipework in either the horizontal position or facing downwards No other valves should be placed between the cold water combination valve and the cylinder The blank plastic plugs in the body of the pressure relief valve are pressure gauge connections to enable pressure monitoring to be carried out should ...

Page 21: ... O D 0 55 l m 10 litres 18m See See fig 12 Note Plastic pipe capacities may be reduced due to thicker wall sections 6 2 2 Primary circuit control The 2 port motorised valve supplied with the unvented system kit MUST be fitted on the primary flow to the cylinder heat exchanger and wired such that in the event of the cylinder overheating it will close the primary circuit Primary circulation to the c...

Page 22: ...at the hot water discharged from safety devices is safely conveyed to where it is visible but will not cause danger to persons in or about the building The following extract is taken from the latest G3 Regulations Discharge pipes from safety devices Discharge pipe D1 3 50 Each of the temperature relief valves or combined temperature and pressure relief valves specified in 3 13 or 3 17 should disch...

Page 23: ...stance exceeds that of a straight pipe 9m long i e for discharge pipes between 9m and 18m the equivalent resistance length should be at least two sizes larger than the nominal outlet size of the safety device between 18 and 27m at least 3 sizes larger and so on bends must be taken into account in calculating the flow resistance 3 59 Where a single common discharge pipe serves more than one system ...

Page 24: ...ct whilst maintaining visibility and c discharges at high level e g into a metal hopper and metal downpipe with the end of the discharge pipe clearly visible or onto a roof capable of withstanding high temperature discharges of water and 3m from any plastic guttering system that would collect such discharges 3 63 The discharge would consist of high temperature water and steam Asphalt roofing felt ...

Page 25: ...Discharge Pipe D1 Discharge Pipe D2 Allowed Expressed As Each Elbow Or Bend From Tundish A Length Of Straight Pipe I E No Elbows Or Bends 22mm up to 9m 0 8m G1 2 15mm 28mm up to 18m 1 0m 35mm up to 27m 1 4m 28mm up to 9m 1 0m G3 4 22mm 35mm up to 18m 1 4m 42mm up to 27m 1 7m 35mm up to 9m 1 4m G1 28mm 42mm up to 18m 1 7m 54mm up to 27m 2 3m Fig 13 Table 6 Typical discharge pipe arrangement extract...

Page 26: ...he latest I E E Wiring Regulations Each circuit must be protected by a suitable fuse and double pole isolating switch with a contact separation of at least 3mm in both poles Check expansion vessel pre charge pressure The expansion vessel pressure must be set in accordance with the inlet pressure set on the pressure reducing valve Ensure the drain cock is CLOSED Open a hot tap furthest from the cyl...

Page 27: ... the tundish and out at the discharge point Ensure that the valve s reseat satisfactorily The installation must comply with G3 of the Building Regulations Warning Do Not operate the primary circuit until the cylinder has been filled with water 7 3 1 Indirect units Fill the indirect primary circuit following the heat source manufacturer s commissioning instructions To ensure the cylinder primary he...

Page 28: ...w of primary water around the heat exchanger coil when the control temperature has been reached Do Not bypass the thermal cut out s in any circumstances 7 3 4 Operational faults Operational faults and their possible causes are detailed in the Fault Finding section of this book It is recommended that faults should be checked by a competent installer The air volume within the expansion vessel suppli...

Page 29: ... section of the Benchmark 8 Maintenance 8 1 General 8 2 1 Inspection There is an inspection plate can be used as an access for inspecting the cylinder internally 8 2 2 Safety valve operation Manually operate the temperature pressure relief valve for a few seconds Check water is discharged and that it flows freely through the tundish and discharge pipework Check valve reseats correctly when release...

Page 30: ...pressure set on the pressure reducing valve If it is lower than the required setting it should be re charged using a tyre pump Schrader valve type Re check the pressure and when correct replace the dust cap 8 2 5 Re commissioning Check all electrical and plumbing connections are secure Close the drain cock With a hot tap open turn on the cold water supply and allow unit to refill Do Not switch on ...

Page 31: ...necessary safety valves Water contained in the cylinder may be very hot especially following a thermal control failure Caution must be taken when drawing water from the unit The fault finding chart table 4 below will enable operational faults to be identified and their possible causes rectified Any work carried out on the unvented water heater and its associated controls MUST be carried out by a c...

Page 32: ...ck and open stop cock Turn off water supply Remove strainer and clean Check and refit as required Check operation of valve Check pump operation Check set to domestic hot water programme Check heat source operation If fault is suspected consult heat source manufacturer s instructions Check reset by pushing button on thermostat Check operation of indirect thermostat Check wiring and or plumbing conn...

Page 33: ...nt by Users in Private Households in the European Union This symbol on the product indicates that this product must not be disposed of with your other household waste Instead it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical equipment The separate collection and recycling of your waste equipment at...

Page 34: ...62 Cover Plate 800 1000L 7722963 Gasket Side Flange 7722883 Gasket Upper Flange 4mm 7722884 Gasket Upper Flange 8mm 7722964 Side Flange Plate Incl Screws 7722892 Upper Connection Plate 300 500L 7722893 Upper Flange Plate Incl Screws 800 1000L 7722894 Embellisher 1 Black Incl Lid 300 500 800L 7722965 Embellisher 1 1 2 Black Incl Lid 7722957 Embellisher 2 Black Incl Lid 7722956 Lid Included With Key...

Page 35: ...alve 28mm 7728197 Equal Tee 1 Brass 7728198 Unvented Kit 800L 7726938 Kit Components Pressure Reducing Valve 1 3 5 Bar 7728225 Strainer 1 7728226 Single Check Valve 1 Brass 7728227 Pressure Relief Valve 1 8 Bar 7728229 Lever Ball Valve 1 Blue 7728230 Expansion Vessel 100L 3 Bar Blue 7728221 Tundish 2 X 2 Brass 7728223 Two Port Valve 28mm 7728197 Equal Tee 1 Brass 7728231 Unvented Kit 1000L 7726939...

Page 36: ...ctions The water heater has not been subjected to frost nor has it been tampered with or been subject to misuse or neglect No factory fitted parts have been removed for unauthorised repair or replacement Regular maintenance has been carried out by a competent person in accordance with the requirements set in the maintenance section of the installation manual and any replacement parts used should b...

Page 37: ......

Page 38: ...chnological information contained in these technical instructions as well as any drawings and technical descriptions supplied remain our property and shall not be multiplied without our prior consent in writing Subject to alterations ...

Page 39: ......

Page 40: ......