Grant DuoWave Plus System Installation & User'S Instructions Download Page 19 | Manualshive

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Fault Finding Guide

19

8.4 Cold Water Flow from Hot Water Taps

Cold Water from Hot Water Taps

Is Programmer calling

for Hot Water?

Check and Set Hot

Water setting

Is Motorised Valve

working?

Is Boiler working?

Is Cylinder Stat

Calling for Heat?

Yes

No

No

No

No

Yes

Yes

Test for correct operation. If water is still

cold, contact a competent Engineer

Check and Replace

Cylinder Thermostat

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Summary of Contents for DuoWave Plus System

Page 1: ...Grant DuoWave Plus System Triple Coil Solar Cylinder Range Installation User Instructions Part No IRL 21 Rev 00 June 2011 Storage Cylinder Do not fit on a well or borehole supply ...

Page 2: ...rked Example 8 4 4 DuoWave Plus 300 9 4 5 Cold Water Storage Cistern CWSC 9 4 6 Cold Feed Pipe 9 4 7 Open Vent Pipe 9 4 8 Primary Connections 9 5 Electrical Installation 10 5 1 Immersion Heater 10 5 2 Immersion Heater Wiring Instructions 10 5 3 Y plan System 11 5 4 S plan System 12 5 5 Solar Thermal System 13 6 Commissioning Draining Down Safety 14 6 1 Filling the Cylinder 14 6 2 Draining Down 14 ...

Page 3: ...mersion heater Refer to page 10 for further details on immersion heaters The central heating primary from a conventional boiler should be connected to the top 22mm coil via the compression connections provided The bottom coil should be used for the Solar Thermal A Solid Fuel appliance should be connected to the middle coil via the 28mm compression connections provided Please refer to the appliance...

Page 4: ...urface area m 1 14 Dedicated solar volume Vs litres 150 Maximum water supply pressure bar 3 Temp pressure relief valve lift pressure bar 7 Temp pressure relief valve lift temperature C 90 Maximum primary circuit working pressure bar 3 Performance Top coil rating kW 11 6 Top coil recovery rate mins 26 Middle coil rating kW 8 5 Bottom coil rating kW 16 0 Standing heat loss kW 2 71 Check list Cylinde...

Page 5: ...2 2 Dimensions Figure 2 1 DuoWave Plus indirect solar cylinder dimensions Dia A B C D E F G K L H I J 40 30 22mm Hot water draw off 1 2 T P Relief valve factory fitted 22mm Secondary return 22mm Boiler return 13 4 Immersion heater factory fitted Boiler stat pocket 22mm Cold water inlet 22mm Boiler flow 22mm Solar return 22mm Solar flow Solar stat pocket 28mm Gravity flow 28mm Gravity return 0 30 M...

Page 6: ...t for dual stat only 9 Cold water inlet 22mm compression 10 Solar heat source flow tapping 22mm compression 11 Immersion heater c w control limit thermostat factory fitted 13 4 BSPF 12 Solid fuel uncontrolled flow tapping 28mm compression 13 Solid fuel uncontrolled return tapping 28mm compression 17 Temperature Pressure relief 15mm compression valve 90 C 7 bar 18 Tundish 15 22mm compression 19 Dis...

Page 7: ...of suspended solids in the water and help prevent the build up of lime scale 3 1 Grant DuoWave Plus Solar Cylinders Grant DuoWave Plus Solar cylinders are suitable for connecting to most fully pumped domestic gas or oil fired central 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 C If you are in any doub...

Page 8: ...ce for quantity of 4 Ø22mm elbows at 0 8m 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 Ø28mm pipe D2 from a 1 2 diameter temperature relief valve equates to 18m Subtract the resistance for a quantity of 4 Ø28mm elbows at 1 0 each 4m Therefore t...

Page 9: ...ern is used to provide cold water to the hot water supply only it should have a capacity at least equal to the hot water cylinder it is supplying 4 6 Cold Feed Pipe The cold water feed pipe from the CWSC to the cylinder should be sized in accordance with BS6700 2006 This feed pipe should not supply water to any other fitting Connect the cold feed pipe to the cold inlet connection of the cylinder R...

Page 10: ...button Ensure the cover to the immersion element is replaced correctly and the retaining nut is fitted Finally switch the mains electricity supply back on Figure 5 1 Immersion heater wiring connections Earth Green Yellow Live Brown Neutral Blue Temperature control dial Reset This appliance must be earthed WARNING The manual re set high limit thermostat must not under any circumstances be bypassed ...

Page 11: ...ed Not supplied 230V 50Hz Room Thermostat L N E 2 1 C C 1 2 1 2 3 4 5 6 7 N E L N E L N HW On HW Off HTG L 8 9 10 2 1 3 Mid position zone valve White Blue Grey Blue Orange Brown Green Yellow 2 port zone valve supplied Green Yellow Notes 1 Orange and grey wires not required electrically isolate 2 2 port valve not required with open vented cylinder High limit Con trol Cylinder Dual Thermostat Top Co...

Page 12: ...Pump Not supplied Grant DuoWave Plus Indirect water cylinder 2 port diverter valve not supplied Cylinder Dual Thermostat Top Coil 230V 50Hz Room Thermostat L N E 2 1 C C 1 2 1 2 3 4 5 6 7 N E L N E L N HTG HW L 8 9 10 2 1 3 Zone valve DHW Zone valve HTG Blue Brown Green Yellow Grey Orange Grey Orange Blue Brown Green Yellow High limit Control Junction box Time controller Boiler Pump ...

Page 13: ...t Electrical Junction Box not supplied Grant GSD1 Controller Twin coil Cylinder Solar Collector Pump Station Collector sensor Cylinder bottom sensor N 230V GND Sensor Solar pump N E L N E L Solenoid valve Dual thermostat Solar coil 230V 3A fused supply L N E 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Grant GSD1 Mk2 Controller 1 C C 1 2 2 C ontrol High Limit ...

Page 14: ...he immersion heater thermostat or cylinder thermostat fails c Thermostat is set too high 2 Remember before resetting the safety cut out or altering the thermostat setting isolate electrical supply to the unit prior to removal of the electrical box lid 3 Reduce thermostat setting and press the reset button After adjustments are completed ensure the lid to the electrical box is replaced correctly an...

Page 15: ...to time to remove and de scale the immersion heater element Replace the gasket each time it is removed WARNING 6 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 7 Close the d...

Page 16: ...harge from T P Valve Test for correct operation If water is still discharging contact a competent Engineer Thermostat Failure Immersion Thermostat Failure Primary Cylinder Thermostat Faulty T P Valve Repair or Replace Immersion Thermostat Repair or Replace Thermostat Replace T P Valve Yes Yes Yes No No ...

Page 17: ...rge Constant Water Discharge from T P Valve Test for correct operation If water is still discharging contact a competent Engineer Faulty T P Valve Faulty Pressure Reducing Valve Replace T P Valve Replace Pressure Reducing Valve Yes Yes Yes Yes No No ...

Page 18: ... Taps No Flow from Hot Water Taps Mains Supply Disconnected Test for correct operation If water is still not flowing contact a competent Engineer Open supply valve or wait for supply to be reconnected Mains Supply Disconnected Repair or Replace Thermostat No Yes Yes Yes No ...

Page 19: ...aps Is Programmer calling for Hot Water Check and Set Hot Water setting Is Motorised Valve working Is Boiler working Is Cylinder Stat Calling for Heat Yes No No No No Yes Yes Test for correct operation If water is still cold contact a competent Engineer Check and Replace Cylinder Thermostat ...

Page 20: ...tat set too high Reduce Thermostat Setting Is System Wiring correct Correct Wiring as per instructions Is Cylinder Thermostat Operating Replace Cylinder Thermostat No Yes Yes Yes No No Test for correct operation If water is still cold contact a competent Engineer Fault Contact Engineer 8 Fault Finding Guide ...

Page 21: ...ur If you are in any doubt these adjustments should be best left to a qualified electrician 3 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 If water is seen to flow from the Temperature Pressure Relief T P Valve valve on the cylinder seek expert advice immediately If the water is flowing from the T P...

Page 22: ...plumbing or heating system external electrics and external components The Grant Cylinder has not been commissioned or serviced in accordance with the installation and servicing manual The system has been installed for over one year Terms of Manufacturer s Guarantee 1 The Grant Cylinder guarantee starts from the date of purchase 2 All electrical and mechanical components supplied with the Grant Cyl...

Page 23: ...Notes User Instructions Warranty 23 ...

Page 24: ...f printing but will be superseded and should be disregarded if specifications and or appearances are changed in the interests of continued product improvement All good sold are subject to our official Conditions of Sale a copy of which may be obtained on application Grant Engineering Ireland Limited 2008 No part of this manual may be reproduced by any means without prior written consent ...

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