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UNVENTED MAINS PRESSURE WATER HEATERS
120, 150, 170, 210, 250 and 300 LITRE CAPACITY INDIRECT MODELS
INSTALLATION AND SERVICING INSTRUCTIONS
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
IMPORTANT: PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS
BEFORE COMMENCING INSTALLATION. PLEASE LEAVE THIS MANUAL
WITH THE CUSTOMER FOR FUTURE REFERENCE.
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
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.
PACK CONTENTS
l Immersion heater spanner l Installation instructions
THE BENCHMARK SCHEME
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).
NOTE: Prior to installation the unit should be stored
in an upright position in an area free from excessive
damp or humidity.
1
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Summary of Contents for Benchmark Centerstore 120
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Page 1: Introduction
WITH THE CUSTOMER FOR FUTURE REFERENCE. 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... -
Page 2: Table Of Contents
Contents PAGE INTRODUCTION..............1 GENERAL REQUIREMENTS..........3 INSTALLATION-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 RECORD..............18 GUARANTEE...............19 TECHNICAL SUPPORT AND SPARES......20... -
Page 3: General Requirements
IMPORTANT: THIS APPLIANCE IS NOT INTENDED WATER SUPPLY FOR THE USE BY PERSONS (INCLUDING CHILDREN) Bear in mind that the mains water supply to the WITH REDUCED PHYSICAL, SENSORY OR MENTAL property will be supplying both the hot and cold CAPABILITIES, OR LACK OF KNOWLEDGE AND EX- water requirements simultaneously. -
Page 4: Installation-General
OPERATIONAL SUMMARY Maximum mains pressure 16 bar Operating pressure 3.5 bar Expansion vessel charge pressure 3.5 bar Expansion relief valve setting 6 bar T&P relief valve setting 90°C/10 bar Maximum primary circuit pressure 3 bar Storage capacity See Table1 Weight when full See Table1 Fig. - Page 5 OUTLET The hot water outlet is a 22mm compression fi tting located at the top of the cylinder. Hot water distribu- tion pipework should be 22mm pipe with short runs of 15mm pipe to terminal fi ttings such as sinks and basins.
- Page 6 DISCHARGE PIPEWORK Table 1 and the worked example [see Table 3 and Fig. It is a requirement of Building Regulation G3 5 in this instruction book]. that any discharge from an unvented system is An alternative approach for sizing discharge pipes conveyed to where it is visible, but will not cause would be to follow BS 6700:1987 Specifi...
- Page 7 Worked example of discharge pipe sizing Fig. 5: shows a G1/2 temperature relief valve with a discharge pipe (D2) having 4 No. elbows and length of 7m from the tundish to the point of discharge. From Table 3: Maximum resistance allowed for a straight length of 22mm copper discharge pipe (D2) from a G1/2 temperature relief valve is 9.0m.
- Page 8 MINIMUM SIZE OF MINIMUM SIZE OF RESISTANCE CREATED BY VALVE OUTLET MAXIMUM RESISTANCE DISCHARGE PIPE D1 DISCHARGE PIPE D2 EACH ELBOW OR BEND SIZE ALLOWED, EXPRESSED FROM TUNDISH AS A LENGTH OF STRAIGHT PIPE (I.E. NO ELBOWS OR BENDS G 1/2 15MM 22mm UP TO 9M...
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Page 9: Electrical Connections
BALANCED COLD WATER COMBINATION COLD WATER MAINS VALVE CONNECTION WATER EXPANSION T&P RELIEF (IF REQUIRED) (2-PIECE) VESSEL SUPPLY VALVE TO HOT OUTLETS ISOLATING VALVE (NOT ELEMENT / SUPPLIED) CONTROLS HOUSING PRIMARY RETURN TUNDISH PRIMARY FLOW INLET DRAIN COCK SECONDARY RETURN DISCHARGE (NOT SUPPLIED) PIPE... -
Page 10: Installation
SPACE AND HEATING SYSTEMS CONTROLS INSTALLATION The controls provided with the CENTERSTORE cylinder will ensure the safe operation of the PLUMBING CONNECTIONS unit within the central heating system. Other CENTERSTORE cylinders require the following controls will be necessary to control the space pipework connections. - Page 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...
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Page 12: Commissioning
After any maintenance, please complete the relevant the CENTERSTORE cylinder primary heat exchanger Service Interval Record section of the Benchmark is fi lled, the 2 port motorised valve (supplied) should Checklist located on Page 17 and 18 of this docu- be manually opened by moving the lever on the mo- ment. -
Page 13: User Instructions
Please ensure that the installer has fully completed support the immersion heater using a round bladed the Benchmark Checklist on Page 17 and 18 of this screwdriver inserted into one of the thermostat manual and that you have signed it to say that you pockets whilst the backnut is tightened. -
Page 14: Fault Finding And Servicing
The Benchmark Checklist may be required in the FAULT FINDING & SERVICING event of any warranty work and as supporting documentation relating to home improvements... - Page 15 Fig. 11: Spares Diagram Imme r s io n h e a t e r 9 5 6 0 6 9 6 1 Imme r s io n h e a t e r g a s ke t 9 5 6 1 1 8 2 2 Imme r s io n h e a t e r b a c kn u t 9 5 6 0 7 8 6 9 Imme r s io n h e a t e r ke y s p a n n e r...
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Page 16: Other Information
C and a stored water temperature of 65 While the following Checklist can be used for any installation covered by its description, only appliances manufactured by Scheme Members will be covered by the rules and requirements of the Benchmark Scheme. -
Page 19: Service Record
• It has been correctly installed as per the instructions contained in the instruction manual and all relevant Codes of Practice and Regulations in force at the time of installation. • The Benchmark Checklist has been completed upon commissioning and the Benchmark Service Record is completed for each service. -
Page 20: Technical Support And Spares
TECHNICAL SUPPORT & SPARES For all technical support, replacement parts and service issues please contact: CENTERSTORE Brooks House, Coventry Road, Warwick, CV34 4LL Tel: 0844 871 1532 The policy of CENTERSTORE is one of continuous product development and, as such, we reserve the right to change specifi...
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