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VOKERA Direct 120L, Installation Instructions Manual

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VOKERA Direct 120L Installation Instructions Manual Download Page 6

Unvented Hot Water Cylinder 

 

 

- 6- 

 

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. Hot water thermostatic mixing valve 
 
 
 

 

3

 

TECHNICAL DATA 

3.1

 

Dimensions 

Model

 

Unit 

Dia 

Height 

120L.  Ind / Dir 

 

mm 

554.5 

1001 

150L.  Ind / Dir 

554.5 

1191 

180L.  Ind / Dir 

554.5 

1371 

210L.  Ind /Dir/Solar 

554.5 

1593 

250L.  Ind /Dir/Solar 

554.5 

1843 

310L / 300L.  Ind /Dir/Solar 

554.5 

2153 

 
 

Summary of Contents for Direct 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: ...teness and are not intended to replace the design Please ensure that the installer has fully completed the Benchmark Checklist on the inside back pages of the installation instructions supplied with t...

Page 3: ...10 Kit contents 15 4 1 Installing pipes for the heating circuit 17 4 2 Cold mains inlet 18 4 3 Safety Assembly 18 4 3 1 Building Regulation G3 20 4 4 Unit filling 22 4 5 Electrical connection 22 4 6 S...

Page 4: ...ation errors and inappropriate equipment use 1 3 Certifications and Markings The CE marking applied to the appliance certifies that it conforms to the essential requirements of the following European...

Page 5: ...protective inserts Make sure that the packaging material is disposed of properly in compliance with the local environment related regulations in force Should the cylinder show any clear signs of any t...

Page 6: ...n heater 5 Two port motorised valve 6 Auto air separator 7 Hot water expension vessel 8 Hot water thermostatic mixing valve 3 TECHNICAL DATA 3 1 Dimensions Model Unit Dia Height 120L Ind Dir mm 554 5...

Page 7: ...90 C 7 bar Expansion relief valve 6 bar Thermal cut out for immersion heater Primary heating thermal cut out 80 C Pressure reducing valve 3 5bar with inline strainer Solar pump thermal cut out set at...

Page 8: ...lve 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 th...

Page 9: ...ia a heat exchanger The water in the cylinder is heated by two separate circuits In the lower coil the water is heated by the solar circuit and as the water in the lower section of the cylinder is gen...

Page 10: ...UnventedHot Water Cylinder 10 Information inspection access to the cylinder is available by removal of the immersion heater boss...

Page 11: ...ature controller and a thermal cut out To set the temperature required simply turn the arrowhead so that it points at one of the numbers between 1 and 5 The list above shows the approximate temperatur...

Page 12: ...UnventedHot Water Cylinder 12 3 8 Technical data table...

Page 13: ...Coil Surface area m3 0 62 0 62 75 75 75 75 Coil Rating kW 18 4 18 8 22 22 6 22 3 20 9 Coil length 8 97 8 97 10 85 10 85 10 85 10 85 Weight when full Kg 146 178 209 248 291 345 Reheat times 15 c 60 c m...

Page 14: ...Rating Upper Coil kW 15 7 15 6 15 5 Lower Coil kW 18 6 18 4 17 1 Reheat Time Upper Coil min 21 27 29 Lower Coil min 34 40 49 Primary heater pressure drop Upper Coil mb 90 91 92 Lower Coil mb 118 117...

Page 15: ...ish slimline straight black 1 compact inlet control 3 6 bar 1 rwc 2 port 22mm zone valve 1 29450022 29450023 Vok ra Kit B 180 210 S C D C 18l pot vessel 3 0bar c w brkt vertical 1 1 2 mt draincock typ...

Page 16: ...210L S C HP 18l pot vessel 3 0bar c w brkt vertical 1 1 2 mt draincock type a 1 3 4 bsp hose c w sealing washer 1000mm 1 15 22mm tundish slimline straight black 1 compact inlet control 3 6 bar 1 rwc...

Page 17: ...the service engineer There must be sufficient space for installing maintaining and replacing the expansion vessel There must be sufficient space for installing maintaining and replacing the immersion...

Page 18: ...assembly and the cylinder This one piece inlet control incorporates several different controls devices in one it is specifically designed for use on an unvented system to control the incoming water su...

Page 19: ...on the fittings used and the type of draw off points it may be necessary to install a backflow preventative device in the cold water inlet WARNING Water temperature over 50 C running from taps may imm...

Page 20: ...y devices may not be apparent e g in dwelling occupied by people with impaired vision or mobility consideration should be given to the installation of a suitable safety device to warmwhen discharge ta...

Page 21: ...from the tundish to the point of discharge From Table1 Maximum resistance allowed for a straight length of 22mm copper discharge pipe D2 from a G temperature relief valves is 9 0m Subtract the resist...

Page 22: ...water supply cock open a hot water tap e g bathroom wash basin etc to allow the water to flow out when the water outflow from the tap is constant the equipment will be full check that there are no le...

Page 23: ...ylinder 23 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 t...

Page 24: ...afety 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 rese...

Page 25: ...s 863 kPa 125 psi Max Fluid Temp 5 88 C 40 190 F Max Ambient Temp 52 C 125 F Hot water Only 4 10 Dual Thermostat Technical data Temperature range 25 5 65 3 C Temperature differential t 8 2 K Limit tem...

Page 26: ...justed to trip at 60 C This is the ideal temperature to prolong element life in hard water areas Scale on the sheath builds up more rapidly at temperatures above this causing the element to overheat a...

Page 27: ...b and check water discharges to tundish ensure the valve closes after testing Discharge pipe D1 open either T P or PRV gradually to produce all full bore discharge into tundish and D2 and check there...

Page 28: ...operations turn off and disconnect the equipment from the mains electrical supply before commencing any work on the Cylinder We recommend that you purchase any spare parts from only authorised dealers...

Page 29: ...ty unit efficiency check The hydraulic unit efficiency is very important to prevent any overpressures inside the cylinder that would damage it and allows the user to safely operate the equipment Perio...

Page 30: ...on the boiler Only cold or lukewarm water at draw off The cold and cold draw offs have been reversed Turn off the cold water supply and let the water flow out via the how draw off Only a few litres of...

Page 31: ...f valve faulty Check if pressure is normal and replace if faulty Water flows from the temperature and pressure relief valve when heating up Dirt in the valve seat Check and repair Boiler temperature c...

Page 32: ...UnventedHot Water Cylinder 32 6 6 Service record Logbook...

Page 33: ...UnventedHot Water Cylinder 33...

Page 34: ...d electronic appliances Proper disposal of this appliance will avoid potentialhealth hazards and adverse consequences for the environment Recycling of materials helps to preserve natural resources For...

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