Design, Installation, User & Servicing Instructions An unvented hot water storage appliance complying with the requirements of Building Regulations Approved Document G3 and manufactured in accordance with BS EN 12897, the specification for unvented water storage vessels.
CONTENTS These instructions should be read in conjunction with the installation/servicing instructions issued by the manufacturer of the heat source being used. Any installation must be in accordance with the relevant requirements of the Gas Safety Regulations, Building Regulations, I.E.E. Wiring Regulations and the Water Fitting Regulations (England and Wales) or Water Byelaws (Scotland).
DESIGN Maintenance Supplied By: Viessmann Ltd Maximum inlet pressure to Pressure reducing valve Operating pressure (PRV setting) Expansion vessel charge pressure Expansion relief valve setting Opening pressure of P & T Relief Valve Opening temperature of P & T Relief Valve Energy cut-out thermostat setting Max. working pressure - Primary heat exchanger (Indirect models) Max.
DESIGN Figure 1 Introduction Viessmann Vitocell 200 Cylinder is a range of unvented hot water storage cylinders, manufactured in the latest high quality duplex stainless steel. They are designed to provide mains pressure hot water and are supplied as a package which complies with Section G3 of the Building Regulations. The appliance is extremely well insulated using high density HCFC free foam insulation with an ozone depleting potential (ODP) of zero and a global warming potential (GWP) of 1.
DESIGN Viessmann Vitocell 200-B Solar Cylinder Viessmann Vitocell 200-B Solar Cylinder is an unvented hot water storage cylinder and is provided with a high efficiency internal primary coil which is designed for use with a gas or oil boiler and is suitable for both open vented and sealed pumped primary systems. Figure 2 When used with a sealed heating system the boiler must incorporate its own energy cut-out overheat thermostat.
DESIGN Vitocell 200-V C J F I K I P E M L E H F J G D G N C B B A A Vitocell 200-B Solar 12 732 550 490 n/a 352 367 n/a 40 367 120 22 142 120 3 12 920 550 678 n/a 352 367 n/a 67 367 150 26 176 150 3 18 1107 550 865 n/a 392 442 n/a 92 407 180 28 208 180 3 18 1295 550 1053 n/a 432 442 n/a 116 447 210 33 243 210 3 24 1483 550 1241 1127 432 442 n/a 145 482 250 38 288 250 3 24 1733 550 1491 1377 927 522 512 109
DESIGN NOTES 1. Not all models - see table 1. 2. Recovery times based on Primary Coil/I.H. duty (ie. assumes the boiler output is adequate). 3. All connections are supplied with compression fittings for direct connection to copper pipework.
DESIGN Viessmann Vitocell 200-V Cylinder 1 Basic Appliance 1. Hot water draw off (22mm) compression 2. Temperature & pressure relief valve 95°/6 bar 3. Hot water secondary return 22mm (not fitted to smaller sizes, see table 1) 4. Immersion heater 1¾” BSP 3kW 5. 22mm cold supply compression 6. Immersion heater 1¾” BSP 3kW 7. Dual control/overheat stat pocket (22mm) 8. Boiler control sensor pocket (spare) 9. Primary return (22mm) 10.
DESIGN 1 2 3 12 9 7 6 11 12 4 8 5 10 Basic Appliance 1. Hot water draw off (22mm) compression 2. Temperature & pressure relief valve 95°/6 bar 3. Hot water secondary return 22mm (not fitted to smaller sizes, see table 1) 4. Immersion heater 1¾” BSP 3kW 5. 22mm cold supply 6. Dual control/Overheat stat pocket 7. Primary return (22mm) 8. Primary flow (22mm) 9. Dual control/Overheat stat pocket 10. Solar coil return to panel collector (22mm) compression 11.
INSTALLATION General Design Considerations The cupboard footprint needs to be at least 650mm square for units up to 300 litres and 730mm for 400 litre. The base chosen for the cylinder should be level and capable of supporting the weight of the unit when full of water as shown in General Data. The discharge pipework for the safety valves must have a minimum fall of 1 : 200 from the unit to a safe discharge point.
INSTALLATION General Restrictions Pipe Layout a. The highest hot or cold water draw off point should not exceed 10 metres above the Pressure Reducing Valve. b. An ascending spray type bidet or any other appliance with a Class 1 back-syphonage risk requiring a type A air gap should not be used. c. Viessmann Vitocell 200 Cylinder should not be used where steam is the primary heating medium, or in a situation where maintenance is likely to be neglected. d.
INSTALLATION Pressure & Temperature/expansion Relief Valve Pipework Typical Discharge Pipe Arrangement 15 mm discharge pipe Expansion relief valve The relief valve should be installed to discharge in accordance with G3 of the Approved Document of the Building Regulations and should be piped to where it is visible, but will not cause danger to persons or damage to materials. 500 mm max. P&T Relief Valve Dotted line showing alternative route with single tundish being used 300 mm min.
INSTALLATION d) It is preferable for the discharge to be visible at both the tundish and the final point of discharge but where this is not possible or practically difficult there should be clear visibility at one or other of these locations. Examples of acceptable discharge arrangements are: 1. Ideally below the fixed grating and above the water seal in a trapped gulley. 2. Downward discharges at a low level; i.e.
INSTALLATION Temperature/Pressure Relief Valve This safety device is also pre-set at the factory and relieves before the temperature reaches 100°C. It is also a Pressure Relief Valve, and is pre-set to 6 bar. E L Thermostat N Immersion Heaters These are 3kW 240V AC heaters and incorporate a thermostat and a manually reset energy cut-out which operates at 80°C. They have incalloy elements to prolong their life expectancy in aggressive water conditions.
INSTALLATION Schematic Open Vented Primary System Heating/primary Systems The boiler and primary/heating systems should be sized and installed in accordance with BS 5449.
INSTALLATION Schematic Solar System With Viessmann Boiler As Solar Controller Solar Panel A typical arrangement of a solar system incorporating a Viessmann Vitocell 200-B Solar Cylinder appliance is shown opposite. All components in a solar primary system must be marked or identifiable in such a way that their design pressure and temperature can be readily determined.
INSTALLATION Mixed HW out Mains CW in Figure 2: Cold port of the blending valve connected to balanced cold supply - NON-RETURN VALVE MUST BE FITTED Mixed HW out Non-Return Valve (must be fitted) Mains CW in Figure 3: Cold port of the blending valve connected to mains supply to the vessel after the inlet control group Mixed HW out Mains CW in Page 17 Fitting Blending Valves To The Unvented Viessmann Vitocell Appliances When fitting a blending valve to the unvented appliances, it is important that
INSTALLATION Schematic Showing Solar Wiring Requirements S1 No isolation valve should be installed between the solar circuit and the safety valve (pressure relief valve) 1 bar Vitosolic 100 Type SD1 Pressure Relief Valve Solar Pumping Station Viessmann Vitocell 200-B Solar Cylinder 1 S1 2 3 S2 4 5 S3 6 PWM 9 10 145 11 12 13 14 15 T T Anti Gravity Check Valve N R2 N R1 N L 16 17 18 19 20 21 Anti Gravity Check Valve Dual Thermostat o + C o + C C 1 2 C 1 INSTALLATION Solar Coil 1 L
L N E N L INSTALLATION 3 Br Br 3 OFF 4 Br Br A Or 7 HTG B Bl Bl G/Y V4043A TWO PORT ZONE VALVE Bl G/Y Gr Br Br 6 *Br HW VALVE Br B HTG VALVE 5 4 ON G/Y 8 G/Y Br 1 Gr 9 Bl 2 A 11 Or Bl G/Y Or Gr B B Br DHW V4043A TWO PORT ZONE VALVE Or Br 4 4 core cable 10 B 3 B 12 Br Br C 1 Br Bl N G/Y E 3 core flex White Green / Yellow Grey Wh G/Y Gr Green Yellow Y G Orange Or GAS BOILER Note: Do not attempt the electrical work unless you are com
INSTALLATION Commissioning Connections can come loose in transit, and all should be checked before installation. Ensure that the immersion heater setting is 60°C and that the wiring is in accordance with the diagram. Check the pressure on the air side of the expansion vessel = 3 bar. This must be done when the volume in the cylinder is cold. Check that the drain cock is closed, and open all the cold and hot water taps and other terminal fittings.
USER INSTRUCTIONS User Instructions Your Viessmann Vitocell 200 Cylinder is automatic in normal use, but requires routine maintenance which is normally carried out at least annually along with the boiler service. The maintenance must be carried out by a suitably competent tradesperson who is qualified to work on unvented cylinders. The checks/work needed are listed in the maintenance part of these Instructions.
SERVICING Maintenance The Registered Installer is responsible for the safe installation and operation of the system. The installer must also make his customer aware that periodic maintenance of the equipment is essential for safety. Maintenance periods will vary for many reasons. Viessmann Ltd recommend a maximum of 12 months to coincide with boiler maintenance.
SERVICING Problems And Remedial Action Scale In hard water areas it is recommended that an in-line scale inhibitor is fitted. Reducing the temperature of the stored water will reduce the rate at which scale forms. If the recovery rate is badly affected, this is an indication that scaling may have occurred. In this event, follow the procedures as recommended by a reputable Water Treatment Company. General No water at the tap. Check that the mains water supply is turned ON.
SERVICING Fault - No Hot Water START YES NO Is boiler on? Switch on YES Is hot water programmer in ‘on’ position? NO Set programmer YES Is zone valve in correct position? NO Re-set, check wiring & plumbing is correct YES Is control temperature set at 55ºC - 60ºC? NO Re-set YES NO Has high limit cut out? YES Is all wiring to the controls ok? NO Re-wire YES NO Re-set Replace thermostat FAULT FINDING END Page 24
SERVICING Fault - Poor Water Flow At Hot Taps START YES Is incoming mains supply flow/pressure adequate? NO Water service check by supply company required YES Is in-line strainer (in combination valve) clean? NO Clean or replace strainer as appropriate YES Is pressure reducing valve (in combination valve) working? NO Service /replace PRV as appropriate YES Is system free from restrictions/blockages? NO Clear obstructions YES END Fault - Water Discharge Into Tundish START YES Is valve seal and
SERVICING SPARE PARTS LIST Description 1 3kW immersion element Quantity Gledhill Code No. Spares Part No. 1 SH001 7160753 2 22mm 90° compression elbow c/w/drain 1 SF003 7160754 3 Pressure and temperature relief valve 6 bar 95°C 1 SG001 7160755 4 Inlet group set at 3 bar c/w expansion relief valve set at 4.
APPENDIX Water Savings Water Related Costs Can Be Reduced By Good Plumbing Practice 1 2 1 1 2 tap half open Unregulated Over 20 l/m Fitted with regulator 5, 6 or 8 l/m 2 2 TAPS & MIXERS 4 Fixing Options For Taps & Mixers 1. MK Range - Combined Regulators & Aerator for screwing onto Taps & Mixers with internal or external threads on their noses.Anti Vandal models also available.
APPendix MANUAL HANDLING OF APPLIANCE PRODUCTS Description e. Manual handling means any transporting or supporting of a load (including lifting, putting down, pushing, pulling, carrying or moving) by hand or bodily force. Scope This assessment will cover the largest product supplied by Viessmann Limited. For specific weights and dimensions please refer to technical data section. Main Hazards Vision may not be clear due to the size of the products.
SERVICE INTERVAL RECORD SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record Below. Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the boiler manufacturer’s instructions.
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Viessmann Werke GmbH&Co KG D-35107 Allendorf Telephone: +49 6452 70-0 Fax: +49 6452 70-2780 www.viessmann.com Viessmann Limited Hortonwood 30, Telford Shropshire, TF1 7YP, GB Telephone: +44 1952 675000 Fax: +44 1952 675040 E-mail: info-uk@viessmann.
