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Summary of Contents for VOKERA Indirect SC 120L
- Page 1 AquaFlow Unvented Hot Water Cylinders Indirect SC - 120L- 150L – 180L - 210L – 250L – 310L Direct – 120 6kW – 150l 6kW – 180 6kW -210 6kW-250 6kW – 310 6 kW Solar (Twin Coil) – 210L - 250L – 300L Installation Instructions GB, IE...
- Page 2 Unvented Hot Water Cylinder INTRODUCTION The following pages incorporate the installation instructions and must be left in a safe place adjacent to the cylinder or given to the end user once they have been correctly instructed in the effective operation of the cylinder. The Installer has a duty of care to instruct the end user how to operate the cylinder correctly.
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Page 3: Table Of Contents
Unvented Hot Water Cylinder TABLE OF CONTENTS Personal Responsibility ........ 4 Unit filling ..........22 Field of use ..........4 Electrical connection ........22 Certifications and Markings ......4 Safety limiting device ......... 24 Cylinder ............4 Solar controller .......... 25 Meaning of the symbols used here in ..... -
Page 4: Personal Responsibility
Unvented Hot Water Cylinder 1 GENERAL NOTICE Personal Responsibility The manufacturer is responsible for the product’s conformity to the relevant construction directives, laws and regulations in force at the time the product is first commercialised. The Plumbing Engineer/Electrician/Installer and User are the each exclusively responsible in their respective fields, for knowing and observing the legal requirements and technical regulations concerning the design, installation, operation and maintenance of the appliance. -
Page 5: Installation Site
Unvented Hot Water Cylinder 2 SAFETY Installation site The floor on which the unit is to be standing must be capable of supporting (locally) the weight (see Technical data table) of the full unit. Do not install the cylinder on floors made of chipboard or other flooring where the mechanical strength is compromised when damp. -
Page 6: Dimensions
Unvented Hot Water Cylinder System Overview 1. Heat Source a. Heating flow 2. Cylinder b. Heating return 3. Two port motorised valve 4. Electric Immersion heater 5. Two port motorised valve 6. Auto air separator 7. Hot water expension vessel 8. -
Page 7: Elements Of The Hot Water Cylinder
Unvented Hot Water Cylinder Elements of the Hot water cylinder Safety Devices The cylinder is delivered with all safety and control devices for the safe operation of the unvented hot water supply system. ** denotes solar cylinder only. Factory fitted temperature & pressure relief valve (90°C / 7 bar) ... -
Page 8: Elements Of The Twin Coil (Solar) Cylinder
Unvented Hot Water Cylinder Elements of the Twin Coil (solar) Cylinder No motorised valve is supplied for the solar pipework and it is mandatory that the solar system be supplied with a solar hydraulic station. The cylinder solar indirect coil can only be connected to a solar circuit that is controlled via a hydraulic station which incorporates a pump and non-return valves. -
Page 9: Solar Heating System
Unvented Hot Water Cylinder If a motorised valve is used this must be fitted on the primary return due to possible high temperatures of the solar circuit. Solar Heating system The solar heating system is a closed hydraulic system in which the heat transfer fluid transfers the heat to the water in the cylinder via a heat exchanger. - Page 10 Unvented Hot Water Cylinder Information inspection access to the cylinder is available by removal of the immersion heater boss. - 10-...
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Page 11: Immersion Heater
Unvented Hot Water Cylinder Immersion Heater Hot water temperature Settings – 1. 20°c 2. 35°c 3. 45°c 4. 60°c 5. 68°c The cylinder is equipped with an additional electric immersion heater with an output of 3kW. The immersion heater will be found under the top front cladding and is designed for use in unvented cylinders. It has a temperature controller and a thermal cut out. -
Page 12: Technical Data Table
Unvented Hot Water Cylinder Technical data table - 12-... - Page 13 Unvented Hot Water Cylinder Indirect single coil 120L 150L 180L 210L 250L 310L Footprint (minimum) 0,55 x 0,64 Hot water capacity 104.9 136.7 166.4 203.9 247.5 274.7 Weight Empty 26.8 28.9 32.4 36.8 40.7 45.9 Minimum ceiling height required 1174 1424 1774 2034...
- Page 14 Unvented Hot Water Cylinder Twin Coil Solar Cylinder 210L 250L 300L Hot water capacity Upper Coil 144.7 Lower Coil 202.1 246.1 271.3 Coil Surface Upper Coil Lower Coil 0.62 0.62 0.62 Coil Length Upper Coil 7.25 7.25 7.25 Lower Coil Coil Rating Upper Coil 15.7...
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Page 15: Pack Contents
Unvented Hot Water Cylinder Pack contents Vokèra unvented water heater incorporating immersion heater & thermal controls Factory fitted dual stat Guarantee card Installation and service manual Accessories Kit 3.10 Kit contents Code Description Quantity 29450020 / 29450021 Vokèra Kit A 120/150 S/C 12l pot vessel 3.0bar c/w brkt vertical 1/2"... - Page 16 Unvented Hot Water Cylinder Vokèra Kit D Inox 180 / 210L Direct 18l pot vessel 3.0bar c/w brkt vertical 1/2" mt.draincock type a 3/4"bsp hose c/w sealing washer-1000mm 15*22mm tundish slimline straight black compact inlet control 3/6 bar Vokèra Kit E Inox 250/310L Direct 24l pot vessel 3.0bar c/w brkt vertical 1/2"...
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Page 17: Installing Pipes For The Heating Circuit
Unvented Hot Water Cylinder 4 INSTALLATION AND COMMISSIONING (To be installed by qualified personnel only) Installation site Position the domestic hot water cylinder as near as possible to the heat source to prevent heat loss Please adhere to the following instructions ... -
Page 18: Cold Mains Inlet
Unvented Hot Water Cylinder A secondary circulation line increases energy consumption, please only install if required for demand and temperature reasons. If it is unavoidable keep operations to a minimum and connect a WRAS approved pump together with a non-return valve and connect to the hot water pipe. (Please note that a second expansion vessel may be required in this instance). - Page 19 Unvented Hot Water Cylinder Warning : Ensure that the expansion relief valve is not covered or closed Install the discharge pipe of the expansion relief valve with a constant fall to the outside. The discharge pipe must finish at a safe and visible height where there is no danger of it freezing and where there is no danger of injury to persons. Actuate the expansion relief valve regularly to prevent scaling.
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Page 20: 4.3.1 Building Regulation G3
Unvented Hot Water Cylinder 4.3.1 Building Regulation G3 The following text is reproduced from the Building Regulations. It is included here for reference only. Discharge pipes from safety devices Discharge pipe D1 3.49 Each of the temperature relief valves or combined temperature and valves specified should discharge either directly or by way of a manifold via a short length of metal pipe (D1) to a tundish. - Page 21 Unvented Hot Water Cylinder Diagram 1 – Typical discharge pipe arrangement Table 1 – Sizing of copper discharge pipe ‘D2’ for common temperature relief valve outlet sizes Maximum resistance allowed Valve outlet Minimum size of discharge to Minimum size of discharge pipe Resistance created by each expressed as a length of straight size...
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Page 22: Unit Filling
Unvented Hot Water Cylinder a. Contain a mechanical seal, not incorporating a water trap, which allows water into the branch pipe without allowing foul air from the drain to be ventilated through the tundish; b. Be a separate branch pipe with no sanitary appliances connected to it; c. - Page 23 Unvented Hot Water Cylinder You must also ensure that the immersion heater is connected to the earth line via the earth terminal. Cylinder thermostat and thermal cut-out for reheating circuit Electrical connection of the immersion heater - 23-...
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Page 24: Safety Limiting Device
Unvented Hot Water Cylinder Only switch the immersion heater on when the cylinder is full Safety limiting device (manual reset Reset, after eliminating the causes of intervention, as follows: - disconnect the power supply; - remove the protection cover fixing screws; - lightly press the thermostat reset button, using an insulated object with round tip, in the position indicated, until hearing a click. -
Page 25: Solar Controller
Unvented Hot Water Cylinder Solar controller - When the solar controller is used as the normal control thermostat on the cylinder and the cylinder incorporates a high limit thermostat for the solar circuit T&P Technical data Max Pressure: 7 bar Max Temperature: 90°C Motorized Zone Valve Technical data... -
Page 26: Unit Emptying
Unvented Hot Water Cylinder 4.12 Unit emptying Should the unit be going to remain unused for a prolonged time, we recommend that you empty it. In this case proceed as follows: • cut off the power supply and the main water supply; •... -
Page 27: Pre-Fill Check
Unvented Hot Water Cylinder Pre-Fill Check Check the expansion vessel is fitted and that no valves are fitted between the expansion vessel and the combination valve. Check that no valves are fitted between indirect water heater and the combination valve. ... -
Page 28: Handing Over
Unvented Hot Water Cylinder Handing Over Complete the Benchmark Logbook. The installer should re-check the system and ensure it’s completely satisfactory before demonstrating to the end user. The end user should be aware of the following: The most cost effective use of the indirect hot water system using the automatic mode. -
Page 29: Replacement Of The Immersion Heater
Unvented Hot Water Cylinder Replacement of the electric immersion heater If replacement of the electric immersion heater is required follow this procedure. Procedure: • Turn off the unit; • Disconnect product from the electrical supply • Empty the cylinder until the water level seems to be lower than the place where the electric immersion heater is joined; •... - Page 30 Unvented Hot Water Cylinder Fault Cause Remedy The cylinder cools down at night One pipe circulation in the case of Install a non-return valve as close as short tube networks with possible to the cylinder pressure loss Primary heating not working. Boiler Vent the reheating heat exchanger.
- Page 31 Unvented Hot Water Cylinder Cylinder sensor faulty Check thermal cut out and replace if faulty Water flows from the expansion relief Dirt on the valve seat Check and repair valve when heating up PRV Faulty Check an replace if faulty Expansion vessel faulty Check pressure, if insufficient re- pressurise and replace if pressure not...
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Page 32: Service Record / Logbook
Unvented Hot Water Cylinder Service record / Logbook - 32-... - Page 33 Unvented Hot Water Cylinder - 33-...
- Page 34 Unvented Hot Water Cylinder DISPOSAL OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (2002/96/EC – WEEE DIRECTIVE) This symbol indicates that the appliance must not be treated as domestic waste upon disposal. Rather, it must be delivered to an authorized collection centre for the recycling of electrical and electronic appliances.
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