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UNVENTED MAINS PRESSURE WATER HEATERS

120, 150, 170, 210, 250 and 300 LITRE CAPACITY INDIRECT MODELS

INSTALLATION AND SERVICING INSTRUCTIONS

PACK CONTENTS

The CENTERSTORE unvented cylinder water heater incorporating immersion heater(s) and thermal 
controls l Factory fi tted temperature/pressure relief valve l Cold water combination valve assembly

 l Expansion vessel and mounting bracket l Tundish l Motorised valve l Compression nuts and olives

l Immersion heater spanner l Installation instructions

IMPORTANT: PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS 

BEFORE COMMENCING INSTALLATION. PLEASE LEAVE THIS MANUAL 

WITH THE CUSTOMER FOR FUTURE REFERENCE.

 

INTRODUCTION

 

The CENTERSTORE cylinder is a purpose designed un-
vented water heater. The unit has a stainless steel inner 
vessel, which ensures an excellent standard of corrosion-
resistance. The outer casing is a combination of resilient 
thermoplastic mouldings and plastic coated corrosion 
proofed steel sheet. All products are insulated with CFC 
free polyurethane foam to give good heat loss
performance. ( See Table 6 )

The unit is supplied complete with all the necessary 
safety and control devices needed to allow connection 
to the cold water mains. All these components are preset 
and not adjustable.

NOTE:

 

Prior to installation the unit should be stored 

in an upright position in an area free from excessive 
damp or humidity.

This appliance complies with the requirements of 
the CE marking directive and is Kiwa approved to 
show compliance with Building Regulations (Sec-
tion G3).

The following instructions are offered as a guide to 
installation which must be carried out by a compe-
tent plumbing and electrical installer in accordance 
with Building Regulation G3, The Building Standards 
(Scotland) Regulations 1990, or The Building Regula-
tions (Northern Ireland).

 

THE BENCHMARK SCHEME

Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that custom-
ers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in 
accordance with the manufacturer’s instructions by competent persons and that it meets the requirements of 
the appropriate Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with 
Building Regulations and should be provided to the customer for future reference.

Installers are required to carry out installation, commissioning and servicing work in accordance with the Bench-
mark Code of Practice which is available from the Heating and Hotwater Industry Council who manage and 
promote the Scheme. Visit www.centralheating.co.uk for more information.

IMPORTANT NOTE TO USER: PLEASE REFER TO THE USER INSTRUCTIONS SECTION ON PAGES 13 AND 14 FOR IM-
PORTANT INFORMATION WITH RESPECT TO THE BENCHMARK SCHEME

Summary of Contents for Centerstore 120

Page 1: ...be stored in an upright position in an area free from excessive damp or humidity This appliance complies with the requirements of the CE marking directive and is Kiwa approved to show compliance with...

Page 2: ...ON GENERAL 4 INSTALLATION 10 COMMISSIONING 12 MAINTENANCE 12 USER INSTRUCTIONS 13 FAULT FINDING AND SERVICING 14 OTHER INFORMATION 16 ENVIRONMENTAL INFORMATION 16 COMMISSIONING CHECK LIST 17 SERVICE R...

Page 3: ...MINAL FITTINGS TAPS ETC The CENTERSTORE cylinder can be used with most types of terminal fittings It is advantageous in many mixer showers to have balanced hot and cold water supplies In these instanc...

Page 4: ...ework be at least 1 metre below the level of the heater this can be achieved by attaching a hose to the drain tap outlet spigot EXPANSION VESSEL The expansion vessel accommodates expansion that result...

Page 5: ...g 4 General dimensions Notes 1 Recovery time based on heating 70 of capacity through 45 C 2 Direct heating times assume use of lower element only from cold through 45 C Table 2 Dimensions and performa...

Page 6: ...nt resistance length should be at least two sizes larger than the nominal outlet size of the safety device between18and27matleast3sizeslarger and soon Bendsmustbetakenintoaccountincalculating the flow...

Page 7: ...f 28mm pipe D2 from a G1 2 temperature relief valves equates to 18m Subtract the resistance of 4 No 28mm elbows at 1 0m each 4 0m Therefore the maximum permitted length equates to 14m As the actual le...

Page 8: ...R BEND G 1 2 15MM 22mm 28mm 35mm UP TO 9M UP TO 18M UP TO 27M 0 8M 1 0M 1 4M G 3 4 22MM 28mm 35mm 42mm UP TO 9M UP TO 18M UP TO 27M 1 0M 1 4M 1 7M G 1 28MM 35mm 42mm 54mm UP TO 9M UP TO 18M UP TO 27M...

Page 9: ...NOT SUPPLIED PRIMARY RETURN PRIMARY FLOW ELEMENT CONTROLS HOUSING INLET SECONDARY RETURN TAPPING IF REQUIRED NOT SUPPLIED COLD WATER COMBINATION VALVE 2 PIECE BALANCED COLD WATER CONNECTION IF REQUIRE...

Page 10: ...out sensing bulbs are pushed fully into the pockets on the ele ment plate assembly BOILER SELECTION Theboilershouldhaveacontrolthermostatandnon self resetting thermal cut out and be compatible with un...

Page 11: ...11 Fig 8 Schematic wiring diagram Basic 2 x 2 port valve system Fig 9 Schematic wiring diagram 3 port mid position valve system N B Must be used in conjunction with 2 port zone valve supplied...

Page 12: ...llow the CENTERSTORE cylinder to heat up to a normal working temperature 60o C recommended approximately graduation 4 on the thermostat If necessary the temperature can be adjusted by insertingaflatbl...

Page 13: ...SEL CHARGE PRESSURE Remove the dust cap on top of the vessel Check the charge pressure using a tyre pressure gauge The pressure withsystemde pressurised shouldbe3 5bar If it is lower than the required...

Page 14: ...ERATIONAL FAULTS Operational faults and their possible causes are detailed in the Fault Finding section of this book It is recommended that faults should be checked by a competent installer The air vo...

Page 15: ...3 5 ba r 95 6 0 7 0 29 Te mpe ra ture Pre ssure R e lie f Va lv e 95 6 0 5 8 10 Ex pa nsio n v e sse l 1 2 litre 12 0 a nd 1 5 0 litre mo de ls 95 6 0 7 8 63 Ex pa nsio n v e sse l 1 8 litre 1 7 0 a n...

Page 16: ...bing c onnec tions to m otoris ed valve s ee Fig 7 1 INTE RM ITTE NTLY E x pans ion V es s el c harge pres s ure has reduc ed below 3 5bar 1 S ee M aintenanc e s ec tion for re c harging proc edure 2...

Page 17: ...17...

Page 18: ...18...

Page 19: ...n used for the storage of potable water It has not been tampered with or been subjected to misuse or neglect The damage is not scale related Within 60 days of installation the user completes and retur...

Page 20: ...eserve the right to change specifications and guarantee terms and conditions without notice For all technical support replacement parts and service issues please contact CENTERSTORE Brooks House Coven...

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