Installation, User and Service Manual
Contents
1. Fig 5 Ke AL 1 6 eg he b M E 2 AC Ho imi 4 5 3 49 le 3 Ka 19 TE ae SU a 1 m te d 17 I T1 43 NN 16 79 59 d r SOLAR PROBE EN 8 2 7 S Ev 8 D D ia Ns 1 i WHEN REQUIRED SECONDARY CIRCULATION TO BE RETURNED TO HERE VIA NONE RETURN VALVE AND SWEPT TEE 19 Schuco SS TC SC Installation and Servicing ITE x DESCRIPTION 1 MAINS COLD WATER SUPPLY 2 STOP COCK NOT SUPPLIED 3 MANIFOLD 3 BAR PRV 6 BAR SRV CHECK VALVE 6 DISCHARGE PIPE 222mm SEE SECTION 7 7 DRAIN COCK 8 IMMERSION HEATER 230v 3Kw 50Hz 9 COLD WATER INLET 022mm EXCEPT 300L 228mm 10 SOLAR COIL RETURN TWIN COIL ONLY 11 THERMOSTAT POCKET 12 SOLAR COIL FLOW TWIN COIL ONLY 13 TUNDISH 15 TO 22mm 14 TEMPERATURE AND PRESSURE RELIEF VALVE SET AT 7 BAR amp 90 C 15 HOT WATER OUTLET 222mm EXCEPT 300L 028mm 16 EXPANSION VESSEL EITHER ON THE COLD WATER SUPPLY OR ON TOP OF THE UNIT 17 SECONDARY RETURN INDIRECT 222mm 300L ONLY TWIN COIL ALL 028mm Stub 18 HEATING WATER RETURN 19 HEATING WATER FLOW 7 Discharge arrangement 20 Schuco SS TC SC Installation and Servicing The user must install Tundishes in a position so t2. Schuco SS TC SC Installation and Servicing 23 Schuco SS TC SC Installation and Servicing Sizing of copper discharge pipe D2 for common temperature relief valve outlet sizes Valve outlet Min size of Min size of resistance Resistance size diameter in discharge pipe discharge pipe allowed created by each inches Dlin mm D2 from tundish expressed asa elbow or bend mm length of m straight pipe i e no elbows or bends 22 Up to 9 0 8 1 2 15 28 Up to 18 1 0 35 Up to 27 14 28 Upto9 3 4 22 35 Uptol8 42 Up to 27 1 7 35 Up to 9 1 4 1 28 42 Up to 18 1 7 54 Up to 27 2 3 Worked example The example below is for a 1 diameter temperature relief valve with a discharge pipe D2 having 4 No elbows and a length of 7 m from the tundish to the point of discharge From 24 Schuco SS TC SC Installation and Servicing Maximum resistance allowed for a straight length of 022mm copper discharge pipe D2 from a 1 diameter temperature relief valve is 9 0 m Subtract the resistance for quantity of 4 022mm elbows at 0 8 m each 3 2m Therefore the maximum permitted length equates to 5 8m 5 8m is less than the actual length of 7m therefore calculate the next largest size Maximum resistance allowed for a straight length of 28mm pipe D2 from a diameter temperature relief valve equates to 18m Subtract the resistance for a quanti
3. Model Number Schuco SS 150 TC 200 TC 250 TC 300 TC TC SC Storage capacity litres 150 200 250 300 Overall diameter mm 533 533 533 533 Overall diameter incl immersion heater mm 595 595 595 595 Overall height with exp vessel on cold feed supply 1105 1455 1755 2065 mm Overall height with exp vessel on top mm 1433 1816 2167 2477 Weight when full kg 188 249 299 356 Primary flow return connections mm 22 22 22 22 Dual fuel coil flow return connections mm 22 22 22 22 Secondary return connection Yes Yes Yes Yes Cold feed hot draw off connections mm 22 22 22 28 Maximum water supply pressure bar 12 12 12 12 System operating pressure pre set bar S 3 3 3 Expansion vessel charge pressure bar 3 3 3 3 Expansion relief valve set pressure bar 6 6 6 6 Temperature and pressure relief valve set 7 7 7 7 Schuco SS TC SC Installation and Servicing Lift pressure bar Lift temperature 9C 90 90 90 90 Maximum primary working pressure bar 3 3 3 3 Maximum lower primary working pressure bar 3 3 3 3 Performance Hot water generation time from 15 to 659Cfor Indirect cylinder min Hot water generation time from 15to 65 for Direct cylinder min Regeneration time for 70 of 37 35 3 86 5 144 e 26 25 Contents for Indirect cylinder min Regeneration time for 7096 of Contents for Direct cylinder min 3 Check list Cylinder assembly 150 Itr 1 Cylinder assembly 200 Itr
4. 1 Cylinder assembly 250 Itr 1 Cylinder assembly 300 Itr 1 KA 1 1 Expansion vessel 12 Itr 150 Ltr amp 200 Ltr 1 Expansion vessel 19 Itr 250 Ltr amp 300 Ltr Monoblock T P valve pre fitted 15 22 Tundish 22mm motorised valve Control limit thermostat PP Immersion heater Note 1 Expansion vessels can be fitted either on the cold water supply or on top of the cylinder 4 General requirements 4 1 The Schuco SS TC SC domestic hot water cylinder MUST be installed by a competent person in accordance with section G3 of the current Building Regulations 4 2 Important It is important that the installer reads and understands these instructions unpacks and familiarises themselves with the equipment before commencing the installation Failure to observe these installation instructions could invalidate the warranty Schuco SS TC SC Installation and Servicing 4 3 Water supply The warranty requires that the water to be heated is of drinking water quality and that if water treatment equipment is installed it must function correctly Where possible the unit should be fed via a 222mm supply pipe It requires a supply pressure of 1 5 bar with a flow rate of at least 20 litres per minute as a minimum for it to function Even with these rates flow from the outlets will be disappoint
5. G JuNcTONBox 1 2 3 4 5 6 7 8 9 10 C3 Gy Gy 9 9 e 9 Gy G m TIME CONTROLLER N EL BOILER S Plan wiring layout and system schematic 1 WATER CYLINDER Schuco SS TC SC Installation and Servicing Ge i 5 Fig 4 1 g 5 d 8 8 2 g i g 5 230V 5 ZONE VALVE 55 _ ZONE VALVE 50 2 HTG j Lj NE ROOM THERMOSTAT 2 1 22411420001 II CONTROL HIGH LIMIT ys GYLIN DER STAT S D Y 12 3 4 5 6 7 8 9 10 59 Y e S 59 Y CG 4 i SY NEU HW HTG Schuco SS TC SC Installation and Servicing S Plan wiring layout and system schematic for Schuco SS TC SC Twin Coil n SOLAR P LLL COLLECTOR WATER CYLINDER E Ihnnnnnnnnnnr E RADIATOR 6 ug
6. systems is supplied separately with the unvented hot water safety kit It should be fitted into the sensor pocket in the cylinder see Fig 1 for position The control thermostat has an adjustment range between 30 C and 90 C however it is recommended this it be set to 60 C WARNING The manual re set high limit thermostat MUST NOT under any circumstances be bypassed This is pre set to 80 C and to prevent nuisance tripping the control thermostat should always be at least 15 C below this 8 3 The 2 port valve To prevent gravity circulation when the boiler switches off the 2 port motorised valve supplied with the unvented hot water kit MUST be fitted in the primary flow pipe to the cylinder and wired in accordance with Figs 2 3 4 1 or 42 depending on system design to comply with current legislation 26 Schuco SS TC SC Installation and Servicing Immersion heater installation and wiring instructions a b Fig 7 Ensure the main s voltage corresponds to the voltage rating of the immersion heater as shown on the rating label on the terminal cover Install the immersion heater into the domestic hot water cylinder using the gasket provided Use a shaped spanner Stillsons or pipe grips should not be used The use of sealing compound is not recommended Wire the immersion heater in accordance with the wiring diagram below It should be wired through a double pole isolator switch or controller havi
7. 0 90 90 90 90 Maxi ki aximum primary working pressure 5 5 E 5 5 bar Performance Hot water generation time from 15 to 65 for Indirect cylinder 26 36 37 36 33 35 40 min Hot water generation time from 15 to 65 for Direct cylinder min Regeneration time for 7096 of 52 72 86 98 108 144 202 18 25 26 25 24 25 29 Contents for Indirect cylinder min Regeneration time for 7096 of 27 37 45 51 63 75 136 Contents for Direct cylinder min 3 Check list Cylinder assembly 90 litre 1 Schuco SS TC SC Installation and Servicing Cylinder assembly 125 litre 1 Cylinder assembly 150 litre 1 Cylinder assembly 170 litre 1 Cylinder assembly 200 litre 1 Cylinder assembly 250 litre 1 Cylinder assembly 300 litre 1 Expansion vessel 12 litre 1 1 1 1 1 Expansion vessel 19 litre 1 1 Pressure reducing valve 1 1 1 1 1 1 1 Expansion relief valve 1 1 1 1 1 1 1 T P valve pre fitted 1 1 1 1 1 1 1 15 22 Tundish 1 1 1 1 1 1 1 22mm motorised valve 1 0 10 1 0 10 1 0 0 1 0 Control limit thermostat 1 0 1 0 10 1 0 1 0 1 0 10 Immersion heater not fitted 1 1 2 1 2 1 2 12 1 2 2 2 Note 1 Expansion vessels can be fitted either on the cold water supply or on top of the cylinder 2 Direct cylinder quantities shown in brackets 2B Technical specifications Twin Coil Cylinders
8. 8 9 10 TWO PORT SG Y NN 9 NN y d ZONE VALVE SUPPLIED EM t LNOTE ORANGE AND GREY WIRES NOT REQUIRED ELECTRICALLY ISOLATE HW HIC N L E TIME NEL AOANITDAII CDO Schuco SS TC SC Installation and Servicing Y Plan wiring layout and system schematic WATER CYLINDER EE RADIATOR I 14 SN m 2 PORT ZONE VALVE 3 PORT MID POSITION SUPPLIED VALVE NOT SUPPLIED PUMP BOILER Schuco SS TC SC Installation and Servicing BLUE BLUE Fi g 3 G YELLOW BROWN WHITE GREY TWO PORT ZONE VALVE sd ORANGE 50Hz ZONE VALVE p een m ORANGE AND GREY ROOM WIRES NOT REQUIRED THERMOS 9 ELECTRICALLY ISOLATE 2 13 _ 2 1112001 CONTROL HIGH LIMIT Uc c QYLINDER STAT 59 Y
9. Schuco SS TC SC Cylinders SCHUCO Installation User and Service Manual Domestic Hot Water Cylinder Schuco SS TC SC Installation and Servicing Important This Manual should be left with the Cylinder after Installation Schueco UK Ltd Solar Division Whitehall Avenue Kingston Milton Keynes MK10 OAL Tel 01908 282111 Fax 01908 289123 www schueco co uk Schuco SS TC SC Direct Indirect amp Twin Coil Cylinder Range Installation User and Service Manual Index Section Page 1 Introduction 2 2 Technical specifications 3 3 Check list 3 4 General requirements 4 5 Primary circuit installation 6 6 Secondary circuit installation 12 7 Discharge arrangement 14 8 Electrical Installation 17 9 Filling and commissioning 19 Schuco SS TC SC Installation and Servicing 10 Servicing and maintenance 20 11 Fault finding 21 12 Userinstructions 22 13 Warranty 22 14 Installation commissioning and service record 23 1 Introduction The Schuco SS TC SC is a high quality stainless steel hot water cylinder suitable for use on unvented or open vented hot water systems The indirect heat exchange surfaces are designed to provide a rapid heat up The indirect unit incorporates a 3kW electric immersion heater as a backup or for summer use When the unit is supplied for unvented applications it comes complete with all the necessary safety equipment to comply with legislation governing the installati
10. X LOT _ B i ue pem 2 PORT ZONE VALVE 2PORTZONEVALVE SUPPLIED SUPPLIED 4 PUMP BOILER Se 16 Schuco SS TC SC Installation and Servicing Fig 4 2 gd d gt H m a a m y 5 5 5 5 5 5 m Di ORANGE N SWITCH OFF 8 E 8 5 5 5 ZONE VALVE SOLAR PUMP d d 5 g SECONDARY 5 __ ZONE VALVE 5 5 ZONE VALVE 15 5 ENERGY end HTG DHW ea source LNE 9 ROO SOLAR CONTROLLER SWITCHING RELAY THERMOSTAT 2 4 3 2 1 2 a QIQ _ CONTROL HIGH LIMIT 4 Po Lon CYUINDERSTAT N SN N S S G S S 12 3 4 5 6 7 8 9 10 S G S 9 G 9 9 9 G 9 GEI HW HTG PUMP e bn uu TIME C 5 CONTROLLER t m N 6 Secondary circuit installation 17 Schuco SS TC SC Installation and Servicing 6 1 Connect
11. ally starting with the one furthest from the cylinder 10 11 Manually lift the expansion relief and temperature and pressure relief valve one at a time every 12 months more frequently in hard water areas to prevent debris from building up behind the valve seat Whilst carrying out this operation check that the discharge to waste is unobstructed Check that each valve seals correctly when released As the valves are pre calibrated they require no further maintenance 10 12 Finally switch on the mains electricity supply to the immersion heater and the boiler As the system heats up check again for any leaks and rectify as necessary 11 Fault finding Notice Disconnect electrical supply before removing any electrical equipment cover Fault Possible cause Remedy 31 Schuco SS TC SC No hot water 1 Mains supply off stopcock 2 Strainer blocked 3 Pressure reducing valve PRV incorrectly fitted Water from hot taps is cold call only or not switched on 2 Central heating boiler malfunction 3 High limit thermostat has tripped Installation and Servicing 1 Open 2 Turn water supply off remove strainer and clean see 10 6 3 Re fit correctly 1 Programmer set to heating 1 Set programmer to for hot water 2 Check boiler operation if faulty consult your boiler manufacturers instructions 3 Check and re set 4 Motorised valve malfunction 4 Check wiring and or Intermittent water di
12. hat they are clearly visible In addition the discharge pipe from the Tundish should terminate in a safe place where there is no risk to persons in the vicinity of the discharge be of metal and a Must be at least one pipe size larger than the normal outlet size of the safety device unless its total equipment hydraulic resistance exceeds that of a straight pipe 9m long i e discharge pipes between 9m and 18m Equivalent resistance length should be at least two sizes larger than the normal outlet size of the safety device between 18m and 27m at least three sizes larger and so on Bends must be taken into account in calculating the flow resistance Refer to the diagram tables and worked example detailed in Fig 6 b Have a vertical section of pipe at least 300 mm long below the Tundish before any elbows or bends in the pipe work c Be installed with a continuous fall d Have discharges visible at both Tundish and the final point of discharge but where this is not possible or practically difficult examples of acceptable discharge arrangements are Ideally below a fixed grating and above the water seal in a trapped gully Downward discharge at low level i e up to 100 mm above external surfaces such as car parks hard standings grassed areas etc are acceptable providing that where children play or otherwise come into contact with discharges a wire cage or similar guard is positioned to prevent contact whilst maintaining visibi
13. he expansion vessel is connected into the cold water supply it MUST be fitted between the expansion relief valve and the cylinder The expansion vessel MUST be positioned with the entry point at the bottom IMPORTANT Regular checks must be carried out to ensure that the expansion vessel is correctly pressurised to 3 bar at all times 6 5 Monoblock Fit Monoblock in accordance with Fig 5 6 6 Secondary circulation If the Schuco SS TC SC cylinder installation requires a secondary circulation circuit a 15mm return leg which incorporates a check valve should be connected via the cold feed using a 22 x 22 x 15 swept tee see Fig 5 However the Twin Coil cylinder provides a secondary return connection to which a secondary circulation circuit 15mm leg incorporating a check valve should be connected see Fig 1 2 for position of secondary return IMPORTANT If a secondary circulation circuit is installed then a larger expansion vessel may be required to handle the increase in volume Schuco SS TC SC Installation and Servicing 6 7 Tundish The tundish must not be positioned above or in close proximity of any electrical current carrying devices or wiring Secondary circuit arrangement for Schuco SS TC SC Cylinder
14. he cylinder be transported to its installation position on a sack truck or similar with the outer carton in place Schuco SS TC SC Installation and Servicing 4 7 Pipe work connections All Pipe work connections to the cylinder MUST be made in accordance with Fig 1 1 or Fig 1 2 4 8 Schuco SS TC SC pipe work connections A Fig 1 1 p B KEY ITEM DESCRIPTION EXPANSION VESSEL OPTIONAL 0 HOT WATER OUTLET G C TEMPERATURE AND PRESSURE RELIEF E VALVE D HEATING WATER RETURN 4 b E THERMOSTAT POCKET Ms e IMMERSION HEATER S G HEATING WATER FLOW H COLD WATER INLET 4 9 Schuco SS TC SC Twin Coil pipe work connections A KEY B ei ITEM DESCRIPTION BL e gb EXPANSION VESSEL OPTIONAL 8 Schuco SS TC SC Installation and Servicing HOT WATER OUTLET B 1501 200L amp 250L 222mm 300L 028 mm TEMPERATURE AND PRESSURE RELIEF VALVE D HEATING WATER RETURN SECONDARY RETURN ALL 028 mm Stub m THERMOSTAT POCKET IMMERSION HEATER HEATING WATER FLOW SOLAR COIL FLOW COLD WATER INLET J 1501 200L amp 2501 022mm 300L 28MM K SOLAR COIL RETURN 5 Primary circuit installation 5 1 Schuco SS TC SC cylinders are suitable for connecting to most fully pumped domestic gas or oil fired central
15. heating boilers working on an open vented or sealed system having a maximum working pressure of 3 bar and a maximum working temperature of 90 degrees centigrade If you are in any doubt concerning the suitability of the boiler consult the boiler manufacturer Solid fuel or wood burning boilers and gravity circulation systems MUST NOT be used on the primary circuit of an unvented hot water system 5 2 Systems For the best results we recommend that the Schuco SS TC SC cylinder be connected toa W plan type system that gives priority to domestic hot water DHW production See Fig 2 This particular system allows all the boiler s 9 Schuco SS TC SC Installation and Servicing energy to go into satisfying the hot water demand before switching over on to central heating duty If an existing system is a flow share arrangement such asa S or Y plan type system see Figs 3 4 1 and 4 2 they will also provide satisfactory results but during central heating demands hot water production will not be as responsive Schuco SS TC SC Twin Coil CYLINDERS MUST BE USED ON 5 PLAN SYSTEMS ONLY This cylinder incorporates a second coil situated below the boiler or upper primary coil The upper primary coil connections should be made in accordance with the instructions given at the beginning of this section PLEASE ENSURE THAT YOU CONNECT THE PRIMARY ENERGY SOURCE NORMALLY A GAS BOILER TO THE UPPER COIL ONLY The lower primary coil is
16. ief valve TPV for a short period to remove trapped air from behind the valve seating and to prove the correct function of the discharge arrangement 9 4 Check all joints for leaks and rectify as necessary 9 5 Check that the control and high limit settings for the indirect system and the immersion heater are as required 9 6 Fill the primary side note it will be necessary to manually open the 2 port valve whilst filling the system this is achieved by moving the lever on the valve head sideways Check for leaks and rectify as necessary Vent all heat emitters of air and following the manufacturers lighting instructions ignite the boiler 9 7 Check that while the cylinder is heating up no water issues from either the expansion relief or the temperature and pressure relief valve and when the cylinder reaches temperature that the 2 port valve closes 29 Schuco SS TC SC Installation and Servicing 10 Servicing and maintenance 10 1 Servicing and maintenance must only be carried out by a competent unvented hot water installer 10 2 Before any work whatsoever is carried out on the installation it MUST first be isolated from the main s electricity supply 10 3 WARNING 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 10 4 Only use spare parts authorised by Schueco UK Ltd The use of unscheduled spare parts wi
17. ing if several outlets are used simultaneously Generally speaking the higher the supply pressure the better the system will function The cylinder control equipment is factory set to limit the system operating pressure to 3 bar The maximum supply pressure into the pressure reducing valve is 12 bar 4 4 Taps and fittings All taps and fittings incorporated in the unvented system should have a rated operating pressure of 7 bar or above 4 5 Location The unit is designed to be floor standing vertically mounted indoors in a frost free environment When choosing a suitable location for the cylinder consideration should be given to the routing of the discharge pipe to a convenient point and also the availability of an adequate power supply for connecting the immersion heater s The cylinder may stand on any flat and level surface without any special foundation preparations provided that it is sufficiently robust to support the full weight of the cylinder Refer to Technical specifications for weights The position of the cylinder should be such that easy access is provided for servicing the controls and replacing the immersion heater should the need arise Generally pipe runs should be made as short as possible and lagged to prevent heat loss 4 6 Storage and handling If the cylinder is not being installed immediately it should remain in its carton with all pipe end protective caps in situ to prevent damage We recommend that t
18. ions Secondary circuit connections MUST be made to the cylinder in accordance with Fig 1 1 Fig 1 2 and Fig 5 A drain cock not supplied should be fitted in the position shown in Fig 5 to facilitate draining of the cylinder 6 2 Cold water supply Where possible for best results the cylinder should be fed by an uninterrupted 22mm supply pipe into the pressure reducing valve PRV with a supply pressure of between 3 and 12 bar maximum In the UK supply pressures this high are not always available However the system will still work satisfactorily with pressures below this The cylinder should not be used on any system with a supply pressure below 1 5 bar and a flow rate of less than 20 litres per minute 6 3 Temperature and pressure relief valve The temperature and pressure relief valve TPV is supplied factory fitted to the cylinder The TPV must not be removed from the cylinder or tampered with in any way The valve is pre calibrated to lift at 7 bar or 90 degrees centigrade and any attempt to adjust it will invalidate the warranty 6 4 Expansion vessel A suitable expansion vessel with a pre charge pressure of 3 bar is supplied for fitting to all cylinders For cylinders up to and including 200 litres capacity the supplied expansion vessel can be screwed on top of the unit or connected into the cold water supply For cylinders of 250 and 300 litres capacity the supplied expansion vessel MUST be connected into the cold water supply If t
19. lity Discharge at high level e g into a metal hopper and metal down pipe with the end of the discharge pipe clearly visible Tundish visible or not or onto a roof capable of withstanding high temperature discharges of water and 3m from any plastic guttering system that would collect such discharges Tundish visible Where a single pipe serves a number of discharges such as in blocks of flats the number served should be limited to not more than six systems so that any installation discharging can be traced reasonably easily The single 21 Schuco SS TC SC Installation and Servicing common discharge pipe should be at least one pipe size larger than the largest individual discharge pipe to be connected If unvented hot water stored systems are installed where discharges from safety devices may not be apparent i e in dwellings occupied by blind or disabled people consideration should be given to the installation of an electrically operated device to warn when discharge takes place Warning Notice The discharge will consist of scalding water and steam Asphalt roofing felt and non metallic rainwater goods may be damaged by such discharges Typical discharge pipe arrangement Fig 6 SAFETY DEVICE E G TEMPERATURE RELIEF VALVE ME DISCHARGE PIPE FROM TEMPERATURE RELIEF VALVE TO TUNDISH A d 500mm TA
20. ll invalidate the warranty 10 5 Drain the cylinder When draining the cylinder always switch off the boiler and the immersion heater first Turn off the water supply at the stopcock see Fig 5 Connect a hose pipe to the drain cock see Fig 5 and route it to a convenient gully Open the drain cock and all hot taps that are served by the cylinder The cylinder may take several minutes to empty completely 10 6 In hard water areas it may be necessary from time to time to remove and de scale the immersion heater element Replace the gasket each time it is removed 10 7 Remove the cartridge from the pressure reducing valve PRV Check the strainer and if necessary remove any debris from in front of it Replace the cartridge 30 Schuco SS TC SC Installation and Servicing 10 8 Check the charge pressure in the expansion vessel and top up as necessary The charge pressure should be 3 0 bar 10 9 Whilst the hose pipe is connected the drain cock open and with the immersion heater removed the cylinder may be flushed out to remove any debris sand or lime scale particles that may have collected in the bottom by using a further hose pipe connected to the cold water main 10 10 Close the drain cock disconnect the hose refit the immersion heater and close all hot water taps before reopening the stopcock Allow the cylinder time to fill whilst checking for any leaks Release any air from the system by opening each hot water tap individu
21. ng contact separation of at least 3 mm using 1 5mm sq flexible cable 85 C rubber insulated HOFR sheathed to comply with BS 6141 table 8 and must be fully earthed The BEAB approval certification on this immersion heater only applies if rod type thermostats types Sunvic VKL or Cotherm SHD are used The temperature setting of the control thermostat must not exceed 60 C In the event of the manual reset cut out operating isolate the immersion heater from the mains supply investigate and identify the cause of the operation of this cut out rectify the fault before manually resetting the cut out via the reset button on the cut out Finally switch the mains electricity supply back on EARTH GREEN YELLOW ees 1 LIVE BROWN 27 NEUTRAL BLUE Schuco SS TC SC Installation and Servicing WARNING THIS APPLIANCE MUST BE EARTHED 9 Filling and commissioning 9 1 Check that the expansion vessel charge pressure is 3 bar 9 2 Check that all connections are made tight including the immersion heater 9 3 Open the main stopcock and fill the secondary system first Open successive taps hot and cold starting with the tap furthest from the cylinder Leave each tap open for a few moments to allow all air and possibly debris from the system to exit Manually lift by rotating the knob both the expansion relief EV and the 28 Schuco SS TC SC Installation and Servicing temperature and pressure rel
22. on of such systems The temperature and pressure relief valve is factory fitted The Schuco SS TC SC twin coil range has a second coil that can be used for fuel sources such as Solar Biomass wood burning stoves range cookers and heat pumps All the installation user and service instructions given for the Schuco SS TC SC range also apply to the Schuco SS TC SC range unless otherwise stated Schuco SS TC SC Installation and Servicing 2 Technical specifications Single Coil amp Direct Cylinders Model Number Schuco SS 90 125 150 170 200 250 300 TC SC Storage capacity litres 90 125 150 170 200 250 300 Overall diameter mm 533 533 533 533 533 533 533 Overall diameter incl immersion heater 595 595 595 595 595 595 595 mm Overall height with exp vessel on cold 755 980 1105 1255 1455 1755 2065 feed supply mm Overall height with exp vessel on top 1083 1308 1433 1583 1816 2167 2477 mm Weight when full kg 120 159 188 212 246 299 353 Primary flow return connections mm 22 22 22 22 22 22 22 Secondary return mm Yes Cold feed hot draw off connections 22 22 22 22 22 22 28 mm Maximum water supply pressure bar 12 12 12 12 12 12 12 System operating pressure pre set bar 3 3 3 3 3 3 3 Expansion vessel charge pressure bar Expansion relief valve set pressure bar 6 6 6 6 6 6 6 Temperature and pressure relief valve set Lift pressure bar Jl 7 7 7 7 7 7 Lift temperature 9C 90 90 9
23. oors in a frost free environment f The warranty card is completed and returned to Schueco UK Ltd within 90 days of installation g The stainless steel hot water cylinder has been serviced every 12 months from the date of installation by a competent person and the service record details recorded This warranty is not transferable This warranty does not include claims due to frost or lime scale damage Proof of purchase will be required against any claim This guarantee does not affect your statutory rights For help about the Schuco SS TC SC andthe Schuco SS TC SC Twin Coil please contact Schueco UK Ltd Solar Division Whitehall Avenue Kingston Milton Keynes MK10 OAL Tel 01908 282111 Fax 01908 289123 34 Schuco SS TC SC 14 Installation Commissioning and Service Record Installation and Servicing CUSTOMER DETAILS NAME ADDRESS TEL No INSTALLER DETAILS COMPANY NAME DATE ADDRESS TEL No INSTALLER NAME COMMISSIONING ENGINEER IF DIFFERENT COMPANY NAME DATE ADDRESS TEL No INSTALLER NAME PLN No CYLINDER DETAILS MODEL CAPACITY LITRES SERIAL NO SERVICE RECORD DETAILS codes of practice Before completing the appropriate Service Interval Record below please ensure you have carried out the service as described in the manufacturer s instructions and in compliance
24. otorised valve supplied with the unvented hot water kit MUST be fitted in the primary flow pipe to the cylinder and wired in accordance with Figs 2 3 4 1 or 4 2 depending on system design to comply with current legislation 5 5 Hard water areas If the cylinder is to be used in a hard water area we recommend that the primary flow temperature be limited to 75 degrees centigrade This will help reduce the migration of suspended solids in the water and help prevent the build up of lime scale W Plan wiring layout and system schematic Schuco SS TC SC Installation and Servicing L WATER CYLINDER RADIATOR 2 PORT ZONE VALVE 3 PORT DIVERTER VALVE SUPPLIED NOT SUPPLIED 1 BOILER BLUE H G YELLOW Fig 2 BROWN 230V 50Hz L NE mE DIVERT VALVE ROOM mi m THERMOSTAT 213 ___ 7 2 Hl 1 CONTROL HIGH LIMIT C iesch BLUE BROWN S e e S e e JUNCTION BOX 1 2 3 4 5 6 ii
25. scharge charge pressure Continuous water discharge PRV 1 Check pressure from working 2 Expansion relief valve not valve plumbing connections to motorised valve 1 Expansion vessel has lost its 1 Turn off stopcock open a hot water tap check vessel charge pressure and recharge to 3 bar 1 Pressure reducing valve PRV if greater than 3 bar replace cartridge 2 Manually lift the 32 Schuco SS TC SC Installation and Servicing seating correctly once or twice to clear any debris from the seat otherwise replace valve 3 Temperature and pressure 3 Same remedy as above relief valve not seating correctly 12 Users instructions 12 1 Your Schuco SS TC SC unvented hot water cylinder has been deigned to give many years of trouble free service and is made from hygienic high grade stainless steel It includes a 3 kW electric immersion heater for times when your central heating is switched off during the summer for instance 12 2 The flow temperature of the hot water can be set to your requirements on the immersion heater up to 60 C and the indirect side thermostat up to 65 C These temperatures should not be set any higher otherwise nuisance tripping of the high limit thermostat will occur If you are in any doubt these adjustments should be best left to a qualified electrician 12 3 When a hot tap is turned on there may be a short surge of water this is quite normal with unvented systems and does not mean
26. there is a fault 12 4 When you first fill a basin the water may sometimes appear milky This is due to very tiny air bubbles in the water which will clear very quickly 12 5 WARNING If water issues from the temperature and pressure relief valve TPV or from the expansion relief valve EV seek expert advice immediately 13 Warranty 33 Schuco SS TC SC Installation and Servicing 13 1 Schueco UK Ltd guarantee all electrical and mechanical controls supplied with the cylinder for a period of 2 years from the date of purchase provided that they have been installed for their intended use by a competent person and have not been modified in any Way The material used in the manufacture of the cylinder and sockets is guaranteed for a period of 25 years The labour and manufacturing processes are guaranteed for a period of 2 years from date of installation Provided that a It has been installed by a competent person in accordance with this installation manual and all current regulations and codes of practice at the time of installation b It has been used solely for the purpose of heating potable water that complies with current at the time of installation EU standards and is not fed with water from a private source c It has not been modified in any way d It has not been subjected to excessive pressure or electrolytic action from dissimilar materials or attack from any salt deposits e It has been installed ind
27. ty of 4 28mm elbows at 1 0 each 4m Therefore the maximum permitted length equates to 14m As the actual length is 7m a 28mm diameter copper pipe will be satisfactory 8 Electrical installation WARNING THIS EQUIPMENT MUST BE EARTHED All electrical wiring must be carried out by a competent person and in accordance with the current LE E Wiring Regulations A suitable Earthing point is provided on the cylinder pedestal directly below the immersion heater see Fig 1 1 and Fig 1 2 The control equipment supplied will ensure that the cylinder functions safely From an economic and convenience point of view it is intended that these controls operate in conjunction with other control packages for example S W or Y plan systems which incorporate a programmable time clock etc 25 Schuco SS TC SC Installation and Servicing 8 1 The immersion heater A 3kW 230v 50Hz immersion heater is pre fitted to the cylinder at the factory It should be wired in accordance with the instructions given in Fig 7 The cable MUST be routed through the strain relief bush We recommend that the control thermostat is set at 60 C the high limit trip is factory set at 85 C The immersion heater conforms with EEC Directive 76 889 for radio interference and complies with BS 800 1977 WARNING Never fit an immersion heater without a thermal cut out 8 2 The indirect temperature controller The control and high limit thermostat for use with indirect
28. used for energy input from a secondary source examples include solar arrays heat pumps solid fuel boilers range style cookers etc having a maximum working pressure of 3 bar and a maximum working temperature of 90 degrees centigrade The lower coil has it s own temperature sensing point this is stainless steel pocket In addition there is a further sensing pocket should overall control of the cylinder temperature be required Thermostats for these sensing points are not supplied The flow from the secondary energy source should be connected to the top connection on the lower coil and the return to the bottom The motorised valve must be connected to the high limit on the cylinder thermostat in such a way as to isolate the cylinder from the secondary energy source if the cylinder temperature exceeds the high set point Please see the section on electrical installation THIS IS ESSENTIAL TO ENSURE A SAFE WORKING PRODUCT amp TO AVOID EXCESSIVELY HOT WATER CORRECT WIRING OF THE THERMAL CUTOUT MUST BE ENSURED 5 3 Connections The primary flow and return connections should be made in accordance with Fig 1 1 or Fig 1 2 using 22mm compression fittings not supplied Note that connections for the boiler are shown with the return above the flow however you can also connect the flow above the return Schuco SS TC SC Installation and Servicing 5 4 The 2 port valve To prevent gravity circulation when the boiler switches off the 2 port m
29. with all relevant It is recommended that your hot water system is serviced regularly and that your service engineer completes the appropriate Service Interval Record below SERVICE 1 DATE SERVICE 2 DATE ENGINEER COMPANY ENGINEER COMPANY TEL NO TEL NO COMMENTS COMMENTS SIGNATURE SIGNATURE SERVICE 3 SERVICE A DATE ENGINEER COMPANY ENGINEER COMPANY TEL NO TEL NO COMMENTS COMMENTS SIGNATURE SIGNATURE SERVICE5 DATE SERVICE 6 DATE ENGINEER COMPANY ENGINEER COMPANY TEL NO TEL NO COMMENTS COMMENTS 35 Schuco SS TC SC Installation and Servicing SIGNATURE SIGNATURE SERVICE7 SERVICE 8 DATE ENGINEER COMPANY ENGINEER COMPANY TEL NO TEL NO COMMENTS COMMENTS SIGNATURE SIGNATURE SERVICE 9 SERVICE 10 DATE ENGINEER COMPANY ENGINEER COMPANY TEL NO TEL NO COMMENTS COMMENTS SIGNATURE SIGNATURE lt x Sen Calan Nin PUSHY mr 36 7 Schuco SS TC SC Installation and Servicing Whitehall Avenue Kingston Milton Keynes MK10 OAL Tel 01908 282111 Fax 01908 289123 www schueco co uk 37
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