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INSTALLATION

AND SERVICING

THERMSTORE &

SOLAR THERMSTORE

For users guide see reverse of book

When replacing any part on this appliance, use only spare parts that you can be assured conform to the safety and performance specification that we require.

Do not use reconditioned or copy parts that have not been clearly authorised by Ideal.

For the very latest copy of literature for specification and maintenance practices visit our website www.idealheating.com where you can download the relevant information in PDF format.

December 2011

UIN 208117 A01

2

MANUAL HANDLING OF APPLIANCE PRODUCTS

Description

Manual handling means any transporting or supporting of a load (including lifting, putting down, pushing, pulling, carrying or moving) by hand or bodily force.

Scope

This assessment will cover the largest unit within each product range manufactured by Ideal Heating.

For specific weights and dimensions please refer to technical data section.

Main Hazards

Vision may not be clear due to the size of the products.

Adopting an incorrect method of lifting may cause injury, attempting to lift these products will require help from others. (Team lifts) e. Taking the lead for team lifts- As more than one person is required for these products ensure that one person is taking the lead. This may

be you so ensure that each person that is helping is made aware of the weight and of the items listed within this assessment. Make sure you and any others helping know the route you intend to take that it is clear of any obstructions. Never jerk the load as this will add a little extra force and can cause severe strain to the arms, back and shoulders. If there are steps involved decide on where you will stop and take a rest period. Move smoothly and in unison taking care to look and listen to others helping with the lift. Where possible use a sack truck to move the product over long flat distances, only lift the products when necessary. If in doubt stop and get more help.

Control Measures

Manual lifting procedure

a. b. c. d. e.

Individual capability

The lift, key factors in safe lifting are: a. b.

Balance

Position of back

Positioning of the arms and body

The hold

Taking the lead for team lifts

Individual capability plays an important part in handling these products. Persons above average build and strength will find it easier and should be in good health. Persons below average build and strength may require more rest periods during the handling process.

Balance - Since balance depends essentially upon the position of the feet, they should be apart about hip breadth with one foot advanced giving full balance sideways and forward without tension. In taking up this position, lifting is done by bending at the knees instead of the hips and the muscles that are brought into use are those of the thigh and not the back.

Position of back - Straight - not necessary vertical. The spine must be kept rigid, this coupled with a bent knee position, allows the centre line of gravity of the body to be over the weight so reducing strain.

Pregnant women should not carry out this operation.

Persons who are not in good health should seek medical advice prior to commencing any lifting or manual handling operation.

Residual risk

c. d.

Positioning of arms and body - The further arms are away from the side, the greater the strain on the shoulders, chest and back. Keep elbows close to the body arms should be straight.

Following the guidelines given above will reduce any risk to injury.

The hold - Before lifting ensure you have a good hold.

All persons carrying out this operation must be fully trained and copies of the specific risk assessment made available for inspection and use in their training process.

Further guidance on Manual Handling can be obtained from the Health and

Safety Executive. Manual Handling

Operations Regulations 1992.

Thermstore -

Installation and Servicing

THERMSTORE &

SOLAR THERMSTORE

Destination Country: GB, IE

CONTENTS

Benchmark Commissiong Checklist .................... 26,27

Commissioning ............................................................ 20

Design.......................................................................... 6,7

Fault Finding ........................................................... 22,23

General Data Table ..................................................... 8,9

General Information ................................................... 4,5

Installation ............................................................... 10-20

Manual Handling ............................................................ 2

Schematics.............................................................. 15-18

Servicing & Maintenance ............................................ 21

Short List of Parts ....................................................... 24

Wiring Diagrams .......................................................... 19

Thermstore -

Installation and Servicing

3

4

GENERAL

These instructions should be read in conjunction with the installation/servicing instructions issued by the manufacturer of the heat source being used.

Any installation must be in accordance with the relevant requirements of the Gas Safety Regulations, Building Regulations, I.E.E.

Wiring Regulations and the Water Fitting Regulations (England and Wales) or Water Byelaws (Scotland). It should be read in accordance with the relevant recommendations of the following:

BS 6798; BS 5549; BS 5546;

BS 5440:1; BS 5440:2; CP 331:3

BS 6700: BS 5258 and BS 7593: 1992

Thermstore is covered by Section G3 of the Building Regulations (England and Wales) Technical Standard P3 (Scotland) and

Building Regulation P5 (Northern Ireland). Compliance can be achieved via a Competent Person Self Certification Scheme or notificaton of installation to the Local Authority Building Control Department.

It must be installed by a competent person as defined by the relevant regulations. Manufacturers notes must NOT be taken as over-riding statutory obligations.

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised at all times to ensure they do not play with the appliance.

This information is provided to assist generally in the selection of equipment. Responsibility for selection and specification of our equipment must however remain that of our customer and any experts or consultants concerned with the installation(s).

Please note: that we do not therefore accept any responsibility for matters of design selection or specification, for the effectiveness of an installation or system containing one of our products unless specifically requested to do so in writing.

All goods are sold subject to our Conditions of Sale which are set out at the rear of this specification. In the interest of continuously improving the Thermstore range, Ideal Heating reserve the right to modify the product without notice, and in these circumstances this booklet, which is accurate at the time of printing, should be disregarded. An updated set of Instructions will be produced and supplied with new appliances and will be made available for other appliances on request.

A KIWA product approved to comply with all relevant parts of the Building Regulations and Water Supply (Water Fittings)

Regulations. Visit www.kiwa.co.uk for more information.

Thermstore is produced under an ISO 9001:2008 Quality Management System approved by BSI.

Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturers 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 Benchmark Code of Practice which is available from the Heating and Hot Water Industry Council who manage and promote the Scheme.

Visit www.centralheating.co.uk for more information.

Thermstore -

Installation and Servicing

GENERAL

MANUFACTURER: IDEAL HEATING

Maximum inlet pressure to Pressure reducing valve

Operating pressure (PRV setting)

Expansion vessel charge pressure

Expansion relief valve setting

Energy

Opening pressure of P & T Relief Valve

Opening temperature of P & T Relief Valve setting 80°C

Max. Working pressure - Primary heat exchanger (Indirect models)

Max. Working pressure - Solar heat exchanger (Solar models)

Immersion heater rating

12 bar

3 bar

3 bar

4.75 bar

6 bar

95°C

6 bar

10 bar

3kW, 240V AC

All cylinders are manufactured in accordance with the requirements of BS EN 12897

The tundish must be positioned so that it is visible to the occupant and is away from electrical devices.

Components supplied with Thermstore

• Cold water inlet PRV combination valve/expansion relief

• Pressure and temperature relief valve

• Control thermostat

• Energy cut-out thermostat

• Energy cut-out motorised valve (indirects only)

• Tundish

• 3kW Immersion heater

• Expansion vessel/mounting bracket/flexible hose

• Technical/user product literature

( Note. Please refer to Table 1 on page 8 to confirm the quantity of immersion heaters supplied with the unit)

In any situation where the volume of heated pipework (eg. secondary circulation pipes or manifold pipework for multiple units) exceeds 10 litres, then an additional expansion vessel must be fitted to accommodate the extra expansion volume.

Handling Before Installation

Thermstore must be handled with care and stored the correct way up in a dry place. Any manual handling/lifting operations will need to comply with the requirements of the Manual Handling Operations Regulations issued by the H.S.E. The appliance can be moved using a sack truck on the rear face although care should be taken and the route should be even. In apartment buildings containing a number of storeys we would recommend that the appliances are moved vertically in a mechanical lift. If it is proposed to use a crane, expert advice should be obtained regarding the need for slings, lifting beams etc.

A specific manual handling assessment is shown on page 2 of this manual.

MAINTENANCE

Modifications should not be made to this product. Replacement parts, including immersion heaters, should be purchased from Ideal heating, or agents approved by them. Unvented hot water storage vessels need regular routine checks, and these are detailed below. It is for this reason that this manual must always be left with the Thermstore.

It is essential that these checks be carried out at the time of boiler maintenance by a qualified installer:

1. Manually open the relief valves in turn, and check that water is discharged from the valves and runs freely through the tundish and out at the discharge point. Ensure that the valves re-seat satisfactorily. (Note - the water may be very hot).

2. It is important to check that the discharge pipework is carrying the water away adequately. Check for blockages etc. if it is not.

3. Turn the mains water off and remove and clean the strainer element in the Pressure Reducing Valve.

4. Check the charge pressure in the expansion vessel and repressurise if required

5. Re-fill the system and ensure that all relief valves have re-seated.

6. The Benchmark Service Record should be updated at each service.

7. Check the water pressure downstream of the combination valve is 3 bar in static condition.

8. Check and if necessary, descale the heat exchanger in hard water areas ie. above 200ppm (mg/l).

Notes.

The cylinder is factory fitted with a temperature & pressure relief valve that must not be used for any other purpose or removed.

The cylinder is factory fitted with immersion heaters with thermal cut outs. Immersions without thermal cut outs must not be fitted.

Thermstore -

Installation and Servicing

5

GENERAL

DESIGN

Thermstore is a range of indirect unvented hot water storage cylinders, manufactured in the latest high quality duplex stainless steel.

They are designed to provide mains pressure hot water and are supplied as a package which complies with Section G3 of the Building

Regulations. The appliance is extremely well insulated using high density HCFC free foam insulation with an ozone depleting potential

(ODP) of zero and a global warming potential (GWP) of 1. It is fitted with all necessary safety devices and supplied with all the necessary control devices to make installation on site as easy as possible.

Thermstore is available in two basic variants:

1. Thermstore - For use with gas or oil boilers. Unvented cylinders must not be used with solid fuel boilers or steam as the energy source.

2. Solar Thermstore - For providing hot water by solar gains and gas or oil boilers. Unvented cylinders must not be used with solid fuel boilers or steam as the energy source.

THERMSTORE

Thermstore indirect is an unvented hot water storage cylinder and is provided with a high efficiency internal primary coil which is designed for use with a gas or oil boiler and is suitable for both open vented and sealed

pumped primary systems.

When used with a sealed heating system the boiler must incorporate its own energy cut-out overheat thermostat.

Thermstore indirect models are listed on Table 1, page 8.

SOLAR THERMSTORE

Thermstore Solar indirect is an unvented hot water storage cylinder and is provided with a high efficiency internal primary coil which is designed for use with a gas or oil boiler and is suitable for both open vented and sealed pumped primary systems.

When used with a sealed heating system the boiler must incorporate its own energy cut-out overheat thermostat.

A high efficiency second solar coil is positioned below the primary coil to ensure maximum benefit of solar gain energy.

Thermstore Solar indirect models are listed in Table 1, page 8.

Note:

The cold supply elbow c/w drain tapping must be fitted as shown above. A flexible hose can then be connected to the drain tapping and, providing the hose runs below the lowest level of the cylinder, then all the water contents can be drained out by syphonic action. (The cold feed pipe dips internally to the base of the cylinder.)

6

Thermstore -

Installation and Servicing

GENERAL

DESIGN

1

2

1

2

3

4

7

8

6

10

5

9

3

12

9

7

6

11

12

4

8

5

10

Thermstore

Basic Appliance

1. Hot water draw off (22mm) compression

2. Temperature & pressure relief valve 95°/6 bar

3. Hot water secondary return 22mm

(not fitted to smaller sizes, see table 2)

4. Immersion heater 1¾” BSP 3kW

5. 22mm cold supply compression

6. Immersion heater 1¾” BSP 3kW

7. Dual control/overheat stat pocket (22mm)

8. Boiler control sensor pocket (spare)

9. Primary return (22mm)

- (28mm tails for 400 litre models)

10. Primary flow (22mm)

- (28mm tails for 400 litre models)

Component kit supplied separately

A. Combination inlet group incorporating pressure reducing valve, strainer, check valve, balance cold take off point, expansion relief valve and expansion vessel connection points.

B. Potable expansion vessels c/w flexible hose and wall bracket

C. Tundish

D. Dual control thermostat and combined overheat thermostat

E. Two port (22mm) zone valve for

primary circuit

F. Wiring junction box for primary system

Thermstore -

Installation and Servicing

Solar Thermstore

Basic Appliance

1. Hot water draw off (22mm) compression

2. Temperature & pressure relief valve 95°/6 bar

3. Hot water secondary return 22mm

(not fitted to smaller sizes, see table 2)

4. Immersion heater 1¾” BSP 3kW

5. 22mm cold supply

6. Dual control/Overheat stat pocket

7. Primary return (22mm)

- (28mm tails for 400 litre models)

8. Primary flow (22mm)

- (28mm tails for 400 litre models)

9. Dual control/Overheat stat pocket

10. Solar coil return to panel collector (22mm) compression

11. Solar coil flow from panel (22mm) compression

12. Solar thermostat pocket

Component kit supplied separately

A. Combination inlet group incorporating pressure reducing valve, strainer, check valve, balance cold take off point, expansion relief valve and expansion vessel connection points.

B. Potable expansion vessels c/w flexible hose and wall bracket

C. Tundish

D. Dual control thermostat and combined overheat thermostat (x2)

E. Two port (22mm) zone valve for

primary circuit

F. Wiring junction box for primary system

7

GENERAL

TABLE 1 - GENERAL DATA (REFER TO DIAGRAMS ON PAGE 9)

Cylinder

Model

Weight - Empty

Weight - Full

Capacity (Total Volume)

Pressure Regulator 3 bar inlet group c/w balance cold supply, expansion vessel connection and expansion valve set at 4.75 bar

Expansion Vessel size. Precharged to 3 bar

Overall Height

Overall Diameter

Pressure & Temperature Relief

Valve 6bar 95°C

22mm Secondary Return Tapping

On Peak Immersion Heater - High

Level

Cold Feed 22mm Compression

Connection

Off Peak Immersion Heater - Low

Level

Volume of On Peak Water Heated

Dual Control & Overheat Stat

Extra Stat Pocket For Boiler Use

If Required

22mm Primary Return

Compression Connection (28mm tails for 400 litre model)

22mm Primary Flow Compression

Connection (28mm tails for 400 litre model)

22mm Solar Return Compression

Connection

22mm Solar Flow Compression

Connection

Dual Control & Overheat Stat

Solar Pocket

Solar Pocket

Second Off Peak Immersion

Heater - Low Level kW Rating of Primary Coil

Surface Area of Primary Heater

Coil

Pressure Loss Across Primary

Heater Coil

Surface Area of Solar Heater Coil

Pressure Loss Across Solar

Heater Coil

Heat Up Time from 15°C to 60°C

(applies to Primary Heat Source only)

Recovery Time after 70% Draw Off

(applies to Primary Heat Source only)

Standing Losses kWhr/24hr

Dedicated Solar Volume kg

90

19

120

22 kg 109 142

Litres bar

90

3

120

3

Litres 12 12

Litres 40 67

G=mm 367 367

H=mm 367 367

I=mm 223 223

18

A=mm 732 920 1107 1295 1483 1733 2020 2040 1295 1483 1733 2020 2040 mm 550 550 550 550 550 550 550 630 550 550 550 550 630

B=mm 490 678 865 1053 1241 1491 1777 1777 1053 1241 1491 1777 1792

C=mm n/a n/a

D=mm 352 352 n/a

392 n/a

432

1127

432

1377 1577 1577

927 1077 1151 n/a

574

1127

614

1377 1577 1592

1042 1155 1129

E=mm 367 367

F=mm n/a n/a

442 442 n/a n/a

442 n/a

522 522

512 512

542

586

437 437 n/a n/a

522 522 n/a n/a

557 n/a

92

18

116

407 447

407

223

447

223

24

145

482

482

223

24 35

109 130

577 677

577

223

677

223

2x24

180

668

668

223

18

80

747 867 n/a

614

24

95 n/a

654

24

115 n/a

702

35

140

2x24

994 1130 1053 n/a

815

190

1053

766

J=mm 312 312

THERMSTORE

150 180 210

26 28

176 208

33

243

150 180

3 3

210

3

250 300

38 44

288 344

250 300

3 3

392 392 392 472 522

400

55

455

400

3

533

SOLAR THERMSTORE

180 210 250 300

30 35

210 245

40

290

46

346

180 210

3 3

250

3

300

3

400

59

459

400

3

834 914 1002 1115 1026

K=mm

L=mm

M=mm

N=mm

P=mm

R=mm kW 16.5

m

2 n/a n/a n/a n/a n/a n/a

0.59

n/a n/a n/a n/a n/a n/a

18

0.59

n/a n/a n/a n/a n/a n/a

18.5

0.68

n/a n/a n/a n/a n/a n/a

19

0.78

n/a n/a n/a n/a n/a n/a

20.5

21.5

0.78

n/a n/a n/a n/a n/a n/a

0.97

n/a n/a n/a n/a n/a n/a

25

0.97

n/a n/a n/a n/a n/a n/a

30.5

1.27

223

352

419 419

218 233 n/a

223

352 n/a

223

472

223

472

539 539

238

548

882 1000 1180 1367 1383

294 n/a

300 n/a

651

357 n/a

18 18.5

19 20.5

22

0.59

0.68

0.78

0.78

0.97

bar 0.165 0.165 0.191 0.216 0.216 0.241 0.241 0.310

0.165 0.191 0.216 0.216 0.241

m

2 n/a bar n/a min min

21

16 n/a n/a

27

19 n/a n/a

28

19 n/a n/a

33

21 n/a n/a

41

26 n/a n/a

44

30 n/a n/a

48

32 n/a n/a

55

36 kWh 0.80

1.00

1.20

1.40

1.60

1.75

1.93

3.33

Litres n/a n/a n/a n/a n/a n/a n/a n/a

0.680 0.680 0.970 0.970 1.270

0.191 0.191 0.241 0.241 0.310

28

16

35

16

38

19

41

20

45

24

1.40

1.60

1.75

1.93

3.33

96 101 107 125 165

continued . . . . .

8

Thermstore -

Installation and Servicing

THERMSTORE

GENERAL

SOLAR

THERMSTORE

40,00º

25,00º

15,00º

35,0

0º

45,0

0º

NOTES.

1. Not all models - see table 1.

2. Recovery times based on Primary Coil/I.H. duty (ie. assumes the boiler output is adequate).

3. All connections are supplied with compression fittings for direct connection to copper pipework.

4. The heat up times shown for the D400 model indicate the times when 1 or 2 immersions are connected.

5. The diagrams shown are generic. For exact product specification refer to the table eg. the number of immersion heaters varies depending on model.

6. Heat up and recover times based on 0.25 l/s primary flow rate and at 82ºC flow temperature

Thermstore -

Installation and Servicing

9

INSTALLATION

10

Combination Valve

I.V.

I.V.

If two Thermstores are coupled together the secondary inlet and outlet pipes must be balanced. The units must be fitted on the same level.

Note: No valves must be fitted between the expansion vessel and the storage cylinder(s).

Model Selection Guide

Max hot water demand

Max number of bed spaces

(Bedrooms)

1 shower room

1 bathroom

Bedsit (0)

2 (2)

1 bathroom

1 bathroom + separate shower room

1 bathroom + 2 separate shower rooms or 2 bathrooms

4 (3)

6 (4)

7 (5)

2 bathrooms + separate shower room

2 bathrooms + 2 separate shower rooms

3 bathrooms + 2 separate showers rooms

3 bathrooms + 3 separate showers rooms

7 (5)

7 (5)

9 (6)

9 (6)

180

210

250

300

400

Indirect litres

90

120

120

150

Solar Model Selection Guide

Max hot water demand

Max floor area (m

2

)

Bedrooms

1 shower room 44 Bedsit

1 bathroom

1 bathroom

1 bathroom + 1 shower room

44

66

66

1-3

1-3

1-3

1 bathroom + 1 shower room

1 bathroom + 2 shower rooms

1 bathroom + 2 shower rooms

2 bathrooms + 1 shower room

2 bathrooms + 1 shower room

2 bathrooms + 2 shower rooms

84

84

113

113

150

150

1-3

2-4

2-4

3-4

4-5

4-5

Indirect litres

-

180

210

-

250

-

300

-

400

General Design Considerations

The cupboard footprint needs to be at least

650mm square for standard units up to 300 litres, 730mm for 400 litre.

The base chosen for the cylinder should be level and capable of supporting the weight of the unit when full of water as shown in General Data.

The discharge pipework for the safety valves must have a minimum fall of 1 : 200 from the unit to a safe discharge point. All exposed pipework should be insulated and the unit should NOT be fixed in a location where the contents could freeze.

The pipe connecting the boiler flow to the appliance must not be less than 22mm copper or equivalent.

Mains Water Supply

Existing properties with a 15mm supply will be satisfactory provided the local mains pressure is good, but should be confined to single bathroom properties. For new properties where simultaneous demand is required to more than one bathroom or a bathroom and one or more en-suites, the communication and service pipe into the dwelling should be a minimum of 22mm

(usually in the form of a 25mm MDPE supply).

The optimum performance is achieved if the inlet pressure is 3 bar dynamic. However, the Thermstore will function with lower inlet pressures, but this will reduce the performance.

There should be a flow of at least 30 litres per minute or above available into the property.

Normally Thermstore provides well in excess of 40 litres/min in most conditions. Flow rates for ALL mains pressure systems are subject to district pressures and system dynamic loss.

Particularly on larger properties with more than one bathroom, the pipe sizes should be calculated in accordance with BS6700.

Model Selection

Where selecting a solar model, it is important to check the dedicated solar volume (shown in tables 1 & 2) is suitable for the total floor area of the dwelling to ensure compliance with Building

Regulations. The maximum floor area of the dwelling permitted for the models is shown opposite.

The suggested model sizes are based on typical hot water usage. For high specification dwellings an increase of one model size should be considered.

Thermstore -

Installation and Servicing

INSTALLATION

General Restrictions

Shower Fittings

Aerated taps are recommended to prevent splashing. Any type of shower mixing valve can be used as long as both the hot and cold supplies are mains fed.

However, all mains pressure systems are subject to dynamic changes particularly when other hot and cold taps/showers are opened and closed, which will cause changes in the water temperature at mixed water outlets such as showers. For this reason and because these are now no more expensive than a manual shower we strongly recommend the use of thermostatic showers with this appliance.

These must be used in 3 storey properties where the impact on pressure/ temperature of opening another tap in the system is greater than normal. The shower head provided must also be suitable for mains pressure supplies.

Pipe Layout

a. The highest hot or cold water draw off point should not exceed 10 metres above the Pressure Reducing Valve.

b. An ascending spray type bidet or any other appliance with a Class 1 backsyphonage risk requiring a type A air gap should not be used. c. Thermstore should not be used where steam is the primary heating medium, or in a situation where maintenance is likely to be neglected.

d. Unvented cylinders are not suitable for use with solid fuel boilers.

e.

If the supply to the mixer fittings (other than a dual outlet type) is not taken from the balanced supply the system will become over pressurized and cause the pressure relief valve to discharge. Over time this could also cause the premature failure of the appliance itself which will not be covered by the warranty.

f. In larger properties with a number of bathrooms/en-suites and long pipe runs we would recommend that the balance cold supply is provided with its own pressure reducing valve and is not taken from the balanced cold connection on the combination valve. In this case it will also be necessary to fit a small expansion vessel on the balanced cold water system to accommodate the pressure rise caused by the increase in temperature of the balanced cold water.

g. Check the performance requirements of the terminal fittings with regard to flow/ pressure are suitable.

h. In relation to potable water systems, expansion vessels shall be installed in a vertical orientation and located so that the length of the connecting pipe work is kept to a minimum.

In all mains pressure installations it is important to remember that the incoming cold supply must be shared between all terminal fittings. It is important that a 22mm supply is brought to the appliance and a

22mm take-off is continued at least to the bath. If there are two baths, 28mm pipework should be considered. One metre of smaller diameter pipework, or flow restrictors, should be provided on the final connection to all outlets so as to balance the water available.

In any event the distribution pipework should generally be in accordance with EN806:1.

Plastic Pipework

This appliance is suitable for use with plastic pipework as long as the material is recommended for the purpose by the manufacturer and is installed fully in accordance with their recommendations.

Secondary Hot Water Circulation

Some models are fitted with a secondary return tapping as standard (see tables 1 and

2 for details). If fitted, an extra expansion vessel may be necessary. A non-return valve MUST be FITTED near the return connection. No valve or terminal fitting should be installed between the non return valve and the cylinder. (See schematic arrangement on page 13.)

DHW

P&T

ERV/NRV

PRV

SCV

SH

SCV

WHB

WC BATH

Note:

Cold supplies to single taps must be taken from the mains cold water system.

Cold supplies to mixer taps must be taken from the balanced cold water connection on the combination valve.

WM or DWM

TO

EXTERNAL

TAP

DC

M

DC

DC

INCOMING COLD SUPPLY

SINK

DCV

WATER SOFTENER (IF NECESSARY)

Thermstore -

Installation and Servicing

DC

WHB W.C.

DC

11

INSTALLATION

PRESSURE & TEMPERATURE/EXPANSION RELIEF VALVE PIPEWORK

12

P & T

Relief

Valve

Typical Discharge Pipe Arrangement

15 mm discharge pipe

500 mm max.

300 mm min.

22 mm metal pipe with continuous fall up to 9m equivalent length (D2).

NOTES:

The discharge will consist of scalding waterand steam. Asphalt, roofing felt and non-metallic rainwater goods may be damaged by such discharges.

It is not acceptable to discharge straight into a soil pipe.

Expansion relief valve

Dotted line showing alternative route with single tundish being used

Discharge below fixed grating

Fixed Grating

Trapped gully

Worked Example

The example below is for G1/2 temperature relief valve with a discharge pipe (D2) having 4 elbows and length of 7m from the tundish to the point of discharge.

From the table below:

Maximum resistance allowed for a straight length of 22mm copper discharge pipe (D2) from a G1/2 temperature relief valve is: 9m subtract the resistance for 4 x 22mm 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 28mm pipe (D2) from a

G1/2 temperature relief valve equates to: 14m.

As the actual length is 7m, a 28mm (D2) copper pipe will be satisfactory.

Sizing of copper discharge pipe ‘D2’ for a temperature relief valve with a G1/2 outlet size (as supplied)

Size of discharge pipework

22mm

28mm

35mm

Maximum length of straight pipe

(no bends or elbows)

Up to 9m

Up to 18m

Up to 27m

Deduct the figure below from the maximum length for each bend or elbow in the discharge pipe

0.8m

1m

1.4m

The relief valve should be installed to discharge in accordance with G3 of the Approved Document of the Building

Regulations and should be piped to where it is visible, but will not cause danger to persons or damage to materials.

The following information is taken from

Approved Document G3 of the Building

Regulations and is provided to assist with the design and installation of the discharge pipework. However, the information is not exhaustive and reference should always be made to Approved Document G3 of the

Building Regulations. The final decision regarding any arrangements rests with

Building Control and it is recommended that their advice is sought if you have any concerns regarding this aspect of the installation.

The two safety valves will only discharge water under fault conditions. When operating normally water will not be discharged.

The tundish should be vertical, located in the same space as the unvented hot water storage system and be fitted as close as possible and within 500mm of the safety device e.g. the temperature relief valve.

The discharge pipe (D2) from the tundish should terminate in a safe place where there is no risk to persons in the vicinity of the discharge, be of metal and: a) Be at least one pipe size larger than the nominal outlet size of the safety device unless its total equivalent hydraulic resistance exceeds that of a straight pipe

9m long i.e. discharge pipes between 9m and 18m equivalent resistance length should be at least two sizes larger than the nominal outlet size of the safety device, between 18 and 27m at least 3 sizes larger, and so on. Bends must be taken into account in calculating the flow resistance. Refer to the table and the worked example.

An alternative approach for sizing discharge pipes would be to follow BS6700

Specification for design installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages.

b) Have a vertical section of pipe at least

300mm long, below the tundish before any elbows or bends in the pipe work.

c) Be installed with a continuous fall.

continued . . . . .

Thermstore -

Installation and Servicing

INSTALLATION

d) It is preferable for the discharge to be visible at both the tundish and the final point of discharge but where this is not possible or practically difficult there should be clear visibility at one or other of these locations. Examples of acceptable discharge arrangements are:

1. Ideally below the fixed grating and above the water seal in a trapped gulley.

2. Downward discharges at a low level; i.e. up to 100mm above external surfaces such as car parks, hard standings, grassed areas etc are acceptable providing that where children play or otherwise come into contact with discharges, a wire cage or similar guard is positioned to prevent contact whilst maintaining visibility.

3. Discharges at a high level; e.g. into metal hopper and metal down pipe with the end of the discharge pipe clearly visible (tundish visible or not) or onto a roof capable of withstanding high temperature discharges of water and

3m from any plastic guttering systems that would collect such discharges.

4. Where a single pipe serves a number of discharges, such as in blocks of flats, the number served should be limited to not more than 6 systems so that any installation can be traced reasonably easily. The single common discharge pipe should be at least one pipe size larger than the largest individual discharge pipe to be connected. If unvented hot water storage systems are installed where discharges form safety devices may not be apparent i.e. in dwellings occupied by blind, infirm or disabled people, consideration should be given to the installation of an electronically operated device to warn when discharge takes place.

Safety

The safety devices supplied or fitted on a Thermstore are selected for their suitability for the temperatures and pressures involved. They must not be changed, removed or by-passed and it is essential that only genuine replacement parts supplied or approved by Ideal Heating are used. This includes the immersion heaters, which must incorporate an energy cut-out. All parts are available to approved installers from Ideal Heating.

Stop

Tap

Kitchen

Cold

Tap

Secondary

Return Circuit

Schematic Diagram

P&T Relief Valve

Pump Non Return

Valve

To Drain

Immersion Heater

Boiler

Flow

Boiler

Return

2 Port Valve

Hot Outlet

Tundish

Expansion

Vessel

Balanced

Cold

Outlets

ERV

NRV

PRV

Combination

Valve

Combination Inlet Group

Combines elements 1, 2 and 3 below.

1. Pressure Reducing Valve - This must be fixed near the cylinder. The cold water supply to any mixer taps/showers must be taken from the cold water tapping of this valve to ensure balanced hot and cold pressures. This valve is factory set to ensure the correct operating pressure for the Thermstore.

2. Non Return Valve - This is integral with the pressure reducing valve to prevent backflow of hot water towards cold water draw off points.

3. Cold Water Expansion Relief Valve - This safety device is preset at the factory and will relieve excess cold water pressure resulting from a fault condition.

Thermstore -

Installation and Servicing

13

INSTALLATION

14

Pressure & Temperature Relief Valve

This safety device is also pre-set at the factory and relieves before the temperature reaches 100°C. It is also a Pressure Relief Valve, and is pre-set to 6 bar.

Immersion Heaters

These are 3kW 240V AC heaters and incorporate a thermostat and a manually reset energy cut-out which operates at 80°C. They have incalloy elements to prolong their life expectancy in aggressive water conditions.

E

L

N

Thermostat

Please refer to tables 1 and 2 to clarify how many off peak and on peak immersions are included with the unit you require.

Where it is intended that units are fitted to offpeak circuits, then suitable controllers such as the Horstmann off peak electric time controller will be required. External wiring to the immersion heaters must be in accordance with the relevant IEE

Wiring Regulations and the circuit must be protected by a suitable fuse and a double pole isolating switch.

Safety

Cut-out

Immersion Heater Wiring

The correct method of terminating the wiring to the immersion heater is shown opposite.

Usage of the product in non-domestic commercial applications can be extremely intensive and stressful to various components.

We recommend that titanium immersion heaters are fitted in such situations, rather than the incology heater supplied as standard.

Titanium immersion heaters offer superior strength, weight and a smoother finish which enable them to better withstand the extreme stress and temperature fluctuation often encountered within non-domestic environments and situations where water quality is poor - ensuring improved performance and extended operational life. This can be purchased as a spare part from

Ideal Heating (see short list of parts, page 24).

Line Strainer

This is integral within the combination inlet group to reduce the likelihood of contaminants fouling the valve seat. Following installation this line strainer must be cleaned and replaced. This needs to be carried out on a regular basis. as part of the annual maintenance/service check.

Tundish

This is to allow the discharge from any Relief Valve to be seen. It must be fitted away from any electrical devices. See page

12 for discharge pipework details.

Safety

The immersion heaters must be earthed and they must be isolated from the mains before the cover is removed on every occasion. Replacement immersion heaters should be obtained from Ideal Heating.

Control/overheat Dual Thermostats

Care must be taken to ensure that the solar probes are fully inserted into the pockets provided.

Anti Vacuum Valve

Important - failure to follow the drain down procedure will invalidate the waranty.(see page 20)

NEVER drain the cylinder of hot water and then close all cylinder inlets and outlets.

REASON as the air remaining in the cylinder cools the pressure inside the cylinder will fall below atmospheric and cause the cylinder to implode.

NEVER close the cold main and drain the cylinder via any tap connected to it.

REASON as the water drains, the pressure inside the cylinder may decrease below atmospheric and this will cause the cylinder to implode.

To stop the possibility of this occurring by accident an ANTI VACUUM VALVE should be fitted in the hot water take off pipe.

This will balance the cylinder’s internal and atmospheric pressures and eliminate this risk.

Available from Ideal Heating.

Thermstore -

Installation and Servicing

Warming/Overflow

Pipe

Schematic Open Vented Primary System

F & E Cistern

Minimum distance as required by boiler manufacturers instructions

Gate Valve

(Not supplied)

Motorised Valve

(Energy cut-out)

Motorised Valve

(Not supplied)

Pump

150mm max.

Boiler

Schematic Sealed Primary System

Safety Valve

Gate Valve

(Not supplied)

Expansion

Vessel

Gauge

Motorised Valve

(Energy cut-out)

Motorised Valve

(Not supplied)

Pump

Boiler

INSTALLATION

Heating/primary Systems

The boiler and primary/heating systems should be sized and installed in accordance with BS 5449.

Safety

Thermstore is fitted with a Combined Temperature/

Pressure Relief Valve to cope with any increase in system temperature and pressure above the design limitations, when used with boilers up to

45kW output, which is the maximum allowed by section G3 of the Building Regulations. The primary water temperatures should be controlled as outlined below.

Primary Circuit

It is essential that the circuit between the boiler and the Thermstore is pumped. The motorised zone valve supplied should be fitted adjacent to the unit and controlled by the cylinder thermostat supplied. The thermostat and motorised valve must be wired so that they both switch off should an overheat situation develop. It is important to follow the wiring diagram in the Wiring Section of these instructions.

Sealed Primary Circuit

Any boiler used must be fitted with an over temperature cut-out. Unvented primary circuits may be filled or replenished by means of a temporary connection between the circuit and a supply pipe provided a ‘Listed’ double check valve or some other no less effective backflow prevention device is permanently connected at the inlet to the circuit and the temporary connection is removed after use.

Alternatively, a CA device can be used, which will allow the system to be permanently connected to the cold mains supply. The primary system can then be topped up, when required, in the same way as an open vented system fitted with an F&E Cistern.

Gate Valve

All our cylinders are tested to BS EN 12897 at 15 l/min at which they exceed the minimum requirements for heat up performance and re-heat in less time than the maximum re-heat times.

In extreme situations where excessive flow rates, above 25 l/min are present, then a gate valve on the return from the cylinder to the boiler, before it joins the central heating return, may be required to reduce excessive flow rates and therefore any potential noise problems.

Thermstore -

Installation and Servicing

15

16

Motorised Valve

Energy cut-out

(Not supplied)

INSTALLATION

Schematic Solar Indirect System

Solar Panel

Solar

Controller

Motorised Valve

Energy cut-out

(Not supplied)

Expansion

Vessel

Solar Pumping Station

All components in a solar primary system must be marked or identifiable in such a way that their design pressure and temperature can be readily determined.

A safety device (pressure relief valve) to control the risk of over-pressure in system components should be fitted. A termination from a safety pressure device should minimise the risk of damage to persons or materials. Suitable locations are a high temperature receptacle, an internal gully or else issue externally at ground level. High level termination from walls or on roofs could cause injury to people or animals below if the valve were to release scalding water and steam.

The pipe leading to the safety device and the collector should be of rigid and non-deformable construction, without any possibility of restriction or disclosure by any other fitted component.

A more detailed diagram of our recommended arrangement for a typical solar system is shown on page 18.

This provides all the necessary controls and safety devices necessary for the solar system i.e. the two port zone valve is wired as an energy cut out and the pump/valve will only allow heat transfer as required under control of the solar controller.

The solar pocket provided accommodates an

8mm diameter sensor which, with the sensor located in the solar collector (or in the flow pipe immediately adjacent to the collector), will provide the information required by the solar controller.

Note: If the motorised valve is not used then any factory built hydraulic station for solar use MUST be fitted with suitable non-return valves in both flow and return pipes to prevent gravity circulation when the pump is not running.

If there is a possibility of the solar controller that you install causing the cylinder temperature to exceed 80ºC, under normal working conditions, then a Solar tempering valve must be fitted to the domestic hot water outlet of the cylinder. This must limit the hot water temperature to a maximum of

60ºC. (ref building regulations part G3 3.63).

Suitable plumbing configurations for installing this valve are shown on page 17 of this manual. NB. Any fitted overheat thermostats may require resetting in the winter months to enable backup heat sources to heat the cylinder.

Thermstore -

Installation and Servicing

Figure 1: Cold port of the blending valve connected to mains supply

NOT ALLOWED

✗

INSTALLATION

Mixed HW out

Mains CW in

Figure 2: Cold port of the blending valve connected to balanced cold supply - NON-RETURN VALVE MUST BE FITTED

Mixed HW out

Non-Return Valve (must be fitted)

Mains CW in

Figure 3: Cold port of the blending valve connected to mains supply to the vessel after the inlet control group

Mixed HW out

Mains CW in

Fitting Blending Valves To The Unvented

Thermstore Appliances

When fitting a blending valve to the unvented appliances, it is important that the installation does not contravene the G3, WRC and Health and Safety directives or the manufacturers recommendations. If this is the case, then the warranty should be null & void. The key requirements to comply with these regulations are: -

1. Any fitting or material in contact with potable water (e.g. a blending valve) must be approved by WRC or an equivalent body.

2. Connections or wiring arrangements must not bypass any safety devices.

3. Any expansion due to heating must not be allowed to expand back into the cold mains.

4. The settings of any safety devices must not be tampered with or adjusted.

The diagrams opposite shows how the blending valve can be piped onsite.

Figure 1 shows the cold water port of the blending valve connected to the mains cold water supply before the inlet control group. This arrangement is completely unacceptable and illegal because: -

• the water is allowed to expand in to mains cold water supply.

• the vessel will be charged to the incoming mains supply which may be considerably higher than the working pressure of the vessel.

If this arrangement is used then the Gledhill warrant will not be valid.

Figure 2 shows the cold water port of the blending valve connected to the balanced cold water outlet. This arrangement will only be acceptable if an approved non-return valve is fitted, otherwise: -

• during the heating cycle, the water will expand back into the mains supply, as the regulating valve must not be relied upon to act as a check valve under all operating conditions.

• depending upon the characteristics of the blending valve, hot water may also flow from the balanced cold water taps.

Figure 3 shows the cold port of the blending valve connected to the cold water supply to the vessel after the inlet control group.

This should be the preferred method. It is recommended that the installer should ensure that there is no gravity circulation in the pipework connected to the cold port. If necessary, this can be achieved by fitting a non-return valve or using a thermal trap.

Thermstore -

Installation and Servicing

17

18

INSTALLATION

WIRE COLOUR LEGEND

Or

Y

Wh

G/Y

R

Bl

Br

B

Gr

G

Red

Blue

Brown

Black

Orange

Yellow

White

Green / Yellow

Grey

Green

Solar Controller

G G Br Bl Br Bl

Schematic Showing Solar Wiring Requirements

No isolation valve should be installed between the solar circuit and the safety valve (pressure relief valve)

1 bar

Solar Thermstore

Unvented Cylinder

Pressure

Relief Valve

Solar

Pumping

Station

T

T

Anti Gravity

Check Valve

Br

Bl

G

Anti Gravity

Check Valve

Dual Thermostat

C 1 2 C 1

Solar Coil

G

Br

Bl

Gr

Or

TWO PORT

ZONE VALVE

A B

(Not supplied)

This valve must be fitted on the return to the solar panels and be suitable for higher temperatures operation

Br Br G G Bl Bl Br Br

1 2

L N

230 VAC 5 amp

Mains Supply

3

Br

4

Br

5 6

Gr

Br

7

Or Br Bl G

8

Bl

9

G

10

Standard 10 way wiring junction box

(Not supplied)

Thermstore -

Installation and Servicing

INSTALLATION

(S-PLAN) WIRING DIAGRAM WITH TWO 2 PORT VALVES AND BOILER CONTROLLED PUMP OVERRUN OPTION

Central Heating Control

HW

ELECTRONICS

Bl

N

Br

L

Danfoss

WB12

Wiring

Centre

Br

1

OFF

1

2

Br

L

Bl

N

G/Y

E

ON OFF

Bl G/Y

2

Br

3

Br

4

Br

3 4

CH

Br

5

ON

B

*Br

6 7 8

Room Thermostat

G/Y Br

1 2 3 4

Bl B

4 core cable

B Br

Bl G/Y

9

Br

HTG

VALVE

Br

HW

VALVE

Bl G/Y Gr

B Or

10

11

Or

Br

G/Y

12

Overheat Stat

Br

C

Dual Aqau Stat

1

Provide extra core from terminal 12 to

L-P connection on the boiler (shown dotted) and remove the boiler pump link if the boiler has an independant pump output.

*Br

3 core flex

Control Stat

1 2

C

Or

Y

Wh

G/Y

Gr

G

R

Bl

Br

B

WIRE COLOUR LEGEND

Red

Blue

Brown

Black

Orange

Yellow

White

Green / Yellow

Grey

Green

The electrical installation must comply with IEE requirements.

For electrical installation

* Blue core used

from standard 3 core

flex please ensure you

use brown sleeving at refer to BS7671

both terminating ends

to identify core potential.

Note: Do not attempt the electrical work unless you are competent to carry out to the above standard

GAS BOILER

5 Amps

L N

Mains Supply

Fed Via Double

Pole Isolator

230 VAC ~ 5 Amps

Br Bl G/Y

Gr Or

V4043A

TWO PORT

ZONE VALVE

A

HTG

B

Br Bl G/Y Or Gr

V4043A

TWO PORT

ZONE VALVE

A

DHW

B

Br

L

Bl

N

G/Y

E

Typical schematic wiring diagram for an unvented installation

Boiler

Pump

Br Bl G/Y B Br Bl G/Y

DRN.

N. Fursman

DATE

07-12-10

APPROVED

ISSUE No : 5

(Y-PLAN) WIRING DIAGRAM WITH 3 PORT VALVE/2 PORT SAFETY VALVE AND BOILER CONTROLLED PUMP OVERRUN OPTION

Central Heating Control

HW

ELECTRONICS

Bl

N

Br

L

OFF

1

ON

2

OFF

Br

3

CH

Br

4

ON

G/Y Br

Room Thermostat

1 2 3 4

Bl B

4 core cable

Spade connectors required for earth connections

G/Y Br

Dual Cylinder Stat

Overheat Stat

C 1 2 C 2

R (Supplied with stat)

4 core cable

Control Stat

B *Br

1

R

Bl

Br

B

Or

Y

Wh

G/Y

Gr

G

WIRE COLOUR LEGEND

Red

Blue

Brown

Black

Orange

Yellow

White

Green / Yellow

Grey

Green

Br

Br

L

1

Bl

N

Bl

2

G/Y

G/Y

E

3

Br

4

Br

5

Wh

HTG

VALVE

B

*Br

6

Br

HW

VALVE

7

Bl

Bl

8

G/Y

G/Y

9

Gr

10

Or

B

Or

11

Br

Br

12

B

B

13

Gr

Provide extra core from terminal 12 to

L-P connection on the boiler (shown dotted) and remove the boiler pump link if the boiler has an independant pump output.

The electrical installation must comply with IEE requirements.

* Blue core used

from standard 3 core

For electrical installation refer to BS7671

flex please ensure you

use brown sleeving at

both terminating ends

to identify core potential.

Note: Do not attempt the electrical work unless you are competent to carry out to the above standard

GAS BOILER

5 Amps

L N

Mains Supply

Fed Via Double

Pole Isolator

230 VAC ~ 5 Amps

A

Wh Bl G/Y Gr Or

V4073A

MID POSITION

ZONE VALVE

HTG

B

Br Bl G/Y Or Gr

V4043A

TWO PORT

ZONE VALVE

A

DHW

B

Br

L

Bl

N

G/Y

E

Boiler

Pump

Br Bl G/Y B Br Bl G/Y

Typical schematic wiring diagram for an unvented installation

DRN.

N. Fursman

DATE

07-12-10

APPROVED

ISSUE No : 4

Thermstore -

Installation and Servicing

19

INSTALLATION

COMMISSIONING

Connections can come loose in transit, and all should be checked before installation.

Ensure that the immersion heater setting is 60°C and that the wiring is in accordance with the diagram.

Check the pressure on the air side of the expansion vessel = 3 bar. This must be done when the volume in the cylinder is cold.

Check that the drain cock is closed, and open all the cold and hot water taps and other terminal fittings. Allow the system to fill with water, and to run until there is no air left in the system. Close the taps and inspect the system closely for leaks.

Manually open the Relief Valves one by one and check that water is discharged and run freely through the tundish and out at the discharge point. The pipework should accept full bore discharge without overflowing at the tundish, and the valve should seat satisfactorily.

Allow the cylinder to heat to normal working temperature with whatever heat source is to be used, and check again for leaks. The pressure relief valve or the P&T valve should not operate during the heating cycle. If the P&T valve operates before the pressure relief valve due to high pressure, check that the inlet control group is fitted correctly.

The boiler/heating systems should be filled and commissioned in accordance with good practice following the guidance in BS 5449/the boiler manufacturers instructions. This includes adequately flushing the system to remove any debris that may have been introduced during installation/maintenance.

In line with good plumbing practice, use with exessive flux should be avoided.

NOTE: This appliance is covered by BENCHMARK and the service record must be completed after commissioning and after every maintenance/ service visit.

When soldering above the cylinder, ensure flux/solder does not contaminate the cylinder below, since this can cause corrosion.

Allow the cylinder to heat to normal working temperature, then thoroughly flush the domestic hot and cold water pipework through each tap.

NOTE: If this appliance is to be installed in other than a single domestic dwelling ie. in an apartment block or student flats etc., the hot and cold water system will need to be disinfected in accordance with BS6700 and the Water Regulations.

Because the Thermstore appliance is stainless steel, the use of chlorine as the disinfection agent can cause damage unless the appliance is adequately flushed and refilled with the mains water immediately on completion of the disinfection procedure. Damage caused through a failure to do this adequately will not be covered by the warranty.

For the above reasons we recommend the use of a non chlorine based disinfectant such as Fernox LP Sterox as manufactured by Cookson Electronics when carrying out disinfection of systems incorporating these appliances.

IMPORTANT - DRAIN DOWN PROCEDURE

1 Switch off both the boiler and the immersion heater

2 Open the nearest hot tap and run all hot water until cold, then close it

3 Close the incoming cold main at the stop tap

4

Hold open the pressure and temperature relief valve until water stops discharging into the tundish and leave it open

5 Open all the taps in the property

6 Open the drain cock and ensure the pressure and temperature relief valve is held open until the cylinder is empty

20

Remove the filter from the combination inlet group clean and replace. Refill the system and open all hot taps until there is no air in the pipe work.

ENSURE

CYLINDER IS DRAINED PRIOR TO CHECKING OR REMOVING FILTER

FROM THE COMBINATION INLET GROUP.

Thermstore -

Installation and Servicing

SERVICING & MAINTENANCE

SERVICING

The Registered Installer is responsible for the safe installation and operation of the system. The installer must also make his customer aware that periodic maintenance of the equipment is essential for safety.

Maintenance periods will vary for many reasons. Ideal Heating recommend a maximum of 12 months to coincide with boiler maintenance. Experience of local water conditions may indicate that more frequent maintenance is desirable, eg, when water is particularly hard, scale-forming or where the water supply contains a high proportion of solids, eg, sand. Maintenance must include the following:

1. Check and clean filter

2. Manually check the operation of the temperature relief valve.

3. Manually check the operation of the expansion relief valve.

4. Check discharge pipes from temperature and expansion relief valves are free from obstruction and blockage and are not passing any water.

5. Check the condition and if necessary descale the heat exchangers in hard water areas.

6. Check that water pressure downstream of pressure reducing valve is within the manufacturers limits.

7. Check operation of motorised valve.

8. Check the pressure on the air side of the expansion vessel. This must be done when the volume in the cylinders is cold.

9.

Check and advise the householder not to place any clothing or other combustible materials against or on top of this appliance.

10. On completion of the work, fill in the Benchmark Service Record towards the back of this manual.

IMPORTANT NOTE

When draining down the appliance for any reason, the instructions provided in the Commissioning Section MUST be followed to prevent potential damage to the cylinder.

Thermstore -

Installation and Servicing

21

22

FAULT FINDING

FAULT FINDING

Scale

In hard water areas it is recommended that an in-line scale inhibitor is fitted. Reducing the temperature of the stored water will reduce the rate at which scale forms. If the recovery rate is badly affected, this is an indication that scaling may have occurred. In this event, follow the procedures as recommended by a reputable Water

Treatment Company.

General

No water at the tap. Check that the mains water supply is turned

ON. Check the line strainer is not blocked. Check that the combination valve has been fitted so that water is flowing in the correct direction.

If the water at the tap is cold, ensure that the boiler has been switched ON and is working correctly. Check that there are no air locks in the primary system. ISOLATE THE UNIT AT THE MAINS

ELECTRIC SUPPLY AND THEN CHECK THE FOLLOWING: i. The cylinder thermostat ii. The thermal cut-out, which can be re-set by pushing the red button iii. The motorised valve iv. The boiler thermostat v. The boiler thermostat cut-out (if fitted)

ANY ENERGY CUT-OUT MUST NEVER BE BY-PASSED UNDER

ANY CIRCUMSTANCES.

If the units are not getting hot and the heat source is electrical, ensure that the immersion heaters are isolated from the mains before re-setting the energy cut-out. If the immersion heater(s) need replacing this should be done with the units supplied from

Ideal Heating.

Discharge From Relief Valves

If cold water is discharging from the expansion relief valve into the tundish check the pressure on the expansion vessel when cold and recharge if necessary.

If the fault continues and the problem cannot be stopped by operating the easing control a few times then either the Pressure

Reducing Valve or the Relief Valve may be at fault. If the cold water pressure is too high, this would suggest that the Pressure

Reducing Valve is at fault and the Ideal Heating approved replacement should be fitted. If the pressure is correct then the

Relief Valve will require replacing with an Ideal Heating approved component.

See Commissioning for drain down procedure.

If there is an overheat fault and very hot water is being discharged, turn off the heat source,

but not the water supply.

When the supply is cool, check thermostats and energy cutouts in the boiler and immersion heaters and replace the faulty component with a unit supplied by Ideal Heating and check that it works correctly before returning the system to full operation.

Thermstore -

Installation and Servicing

FAULT FINDING

FAULT FINDING

FAULT - No Hot Water (Indirect)

START

YES

Is boiler on?

YES

Is hot water programmer in ‘on’ position?

YES

Is zone valve in correct position?

YES

Is control temperature set at 55ºC - 60ºC?

YES

Has high limit cut out?

YES

Re-set

NO

NO

NO

NO

NO

NO

Switch on

Set programmer

Re-set, check wiring & plumbing is correct

Re-set

Is all wiring to the controls ok?

YES

Replace thermostat

NO

Re-wire

END

FAULT - Poor Water Flow at Hot Taps

START

YES

Is incoming mains supply flow/pressure adequate?

YES

Is in-line strainer

(in combination valve) clean?

YES

Is pressure reducing valve

(in combination valve) working?

YES

Is system free from restrictions/blockages?

YES

END

NO

NO

NO

NO

Water service check by supply company required

Clean or replace strainer as appropriate

Service /replace PRV as appropriate

Clear obstructions

FAULT - Water Discharge Into Tundish

START

NO

Is pressure downstream of pressure reducing valve correct?

YES

Is valve seal and seat clean & undamaged?

YES

Is heater operating at less than 60ºC?

NO

NO

Clean or replace as required

YES

Is expansion vessel charge pressure correct?

YES

Replace ERV/TPRV

Re-set temperature

Replace PRV

NO

Recommission expansion vessel pressure

YES

Is ERV/TPRV discharging?

NO

END

Thermstore -

Installation and Servicing

23

LIST OF PARTS

SPARE PARTS LIST

4

5

7

1

3

Description

3kW immersion element

Pressure and temperature relief valve 6 bar 95°C

Inlet group set at 3 bar c/w expansion relief valve set at 4.75 bar

¾” flexible hose

12 litre expansion vessel

8

9

18 litre expansion vessel

24 litre expansion vessel

10 35 litre expansion vessel

12 22mm 2 port valve (indirects only)

13 Junction wiring box (12 way)

14 Control and overheat limit thermostat

15 15mm x 22mm tundish

1

1

1

1

1

1

1

Quantity

1

1

1

1

1

Stock Code No.

176749

176748

176750

176755

176751

176752

176753

176754

176758

176759

176757

176756

24

Thermstore -

Installation and Servicing

Thermstore -

Installation and Servicing

25

MAINS PRESSURE HOT WATER STORAGE SYSTEM COMMISSIONING CHECKLIST

This Commissioning Checklist is to be completed in full by the competent person who commissioned the storage system as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.

Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.

Customer Name

Address

Cylinder Make and Model

Telephone Number

Cylinder Serial Number

Commissioned by (print name)

Company Name

Company Address

Registered Operative ID Number

Telephone Number

Commissioning Date

To be completed by the customer on receipt of a Building Regulations Compliance Certificate

*

:

Building Regulations Notification Number (if applicable)

ALL SYSTEMS PRIMARY SETTINGS

(indirect heating only)

Is the primary circuit a sealed or open vented system?

What is the maximum primary flow temperature?

Sealed Open

°C

ALL SYSTEMS

What is the incoming static cold water pressure at the inlet to the system?

Has a strainer been cleaned of installation debris (if fitted)?

Is the installation in a hard water area (above 200ppm)?

If yes, has a water scale reducer been fitted?

What type of scale reducer has been fitted?

What is the hot water thermostat set temperature?

What is the maximum hot water flow rate at set thermostat temperature (measured at high flow outlet)?

Time and temperature controls have been fitted in compliance with Part L of the Building Regulations?

Type of control system (if applicable)

Is the cylinder solar (or other renewable) compatible?

What is the hot water temperature at the nearest outlet?

All appropriate pipes have been insulated up to 1 metre or the point where they become concealed

UNVENTED SYSTEMS ONLY

Where is the pressure reducing valve situated (if fitted)?

What is the pressure reducing valve setting?

Has a combined temperature and pressure relief valve and expansion valve been fitted and discharge tested?

The tundish and discharge pipework have been connected and terminated to Part G of the Building Regulations

Are all energy sources fitted with a cut out device?

Has the expansion vessel or internal air space been checked?

Y Plan

Yes

Yes

Yes

S Plan

Yes

Yes

Yes

Yes

No

No

No

bar

Yes

Other

No

°C

l/min

Yes

°C

No

Yes

No

No

bar

THERMAL STORES ONLY

What store temperature is achievable?

What is the maximum hot water temperature?

°C

°C

ALL INSTALLATIONS

The hot water system complies with the appropriate Building Regulations

The system has been installed and commissioned in accordance with the manufacturer’s instructions

The system controls have been demonstrated to and understood by the customer

The manufacturer’s literature, including Benchmark Checklist and Service Record, has been explained and left with the customer

Yes

Yes

Yes

Yes

Commissioning Engineer’s Signature

Customer’s Signature

(To confirm satisfactory demonstration and receipt of manufacturer’s literature)

*

All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme.

A Building Regulations Compliance Certificate will then be issued to the customer.

26

©Heating and Hotwater Industry Council (HHIC)

Thermstore -

Installation and Servicing

www.centralheating.co.uk

MAINS PRESSURE HOT WATER STORAGE SYSTEM COMMISSIONING CHECKLIST

This Commissioning Checklist is to be completed in full by the competent person who commissioned the storage system as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.

Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.

Customer Name

Address

Cylinder Make and Model

Telephone Number

Cylinder Serial Number

Commissioned by (print name)

Company Name

Company Address

Registered Operative ID Number

Telephone Number

Commissioning Date

To be completed by the customer on receipt of a Building Regulations Compliance Certificate

*

:

Building Regulations Notification Number (if applicable)

ALL SYSTEMS PRIMARY SETTINGS

(indirect heating only)

Is the primary circuit a sealed or open vented system?

What is the maximum primary flow temperature?

Sealed Open

°C

ALL SYSTEMS

What is the incoming static cold water pressure at the inlet to the system?

Has a strainer been cleaned of installation debris (if fitted)?

Is the installation in a hard water area (above 200ppm)?

If yes, has a water scale reducer been fitted?

What type of scale reducer has been fitted?

What is the hot water thermostat set temperature?

What is the maximum hot water flow rate at set thermostat temperature (measured at high flow outlet)?

Time and temperature controls have been fitted in compliance with Part L of the Building Regulations?

Type of control system (if applicable)

Is the cylinder solar (or other renewable) compatible?

What is the hot water temperature at the nearest outlet?

All appropriate pipes have been insulated up to 1 metre or the point where they become concealed

UNVENTED SYSTEMS ONLY

Where is the pressure reducing valve situated (if fitted)?

What is the pressure reducing valve setting?

Has a combined temperature and pressure relief valve and expansion valve been fitted and discharge tested?

The tundish and discharge pipework have been connected and terminated to Part G of the Building Regulations

Are all energy sources fitted with a cut out device?

Has the expansion vessel or internal air space been checked?

Y Plan

Yes

Yes

Yes

S Plan

Yes

Yes

Yes

Yes

No

No

No

bar

Yes

Other

No

°C

l/min

Yes

°C

No

Yes

No

No

bar

THERMAL STORES ONLY

What store temperature is achievable?

What is the maximum hot water temperature?

°C

°C

ALL INSTALLATIONS

The hot water system complies with the appropriate Building Regulations

The system has been installed and commissioned in accordance with the manufacturer’s instructions

The system controls have been demonstrated to and understood by the customer

The manufacturer’s literature, including Benchmark Checklist and Service Record, has been explained and left with the customer

Yes

Yes

Yes

Yes

Commissioning Engineer’s Signature

Customer’s Signature

(To confirm satisfactory demonstration and receipt of manufacturer’s literature)

*

All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme.

A Building Regulations Compliance Certificate will then be issued to the customer.

Signature

SERVICE 3

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

SERVICE 5

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

SERVICE 7

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

SERVICE 9

Date

Engineer Name

Company Name

Telephone Number

Comments

Thermstore -

Installation and Servicing

SERVICE RECORD

It is recommended that your hot water system is serviced regularly and that the appropriate Service Record is completed.

Service Provider

Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.

SERVICE 1

Date

Engineer Name

Company Name

Telephone Number

Comments

SERVICE 2

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

SERVICE 4

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

SERVICE 6

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

SERVICE 8

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

SERVICE 10

Date

Engineer Name

Company Name

Telephone Number

Comments

Signature

27

©Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk

The code of practice for the installation, commissioning & servicing of central heating systems

Technical Training

The Ideal Technical Training Centre offers a series of first class training courses for domestic, commercial and industrial heating installers, engineers and system specifiers.

For details of courses please ring:................ 01482 498 432

CERTIFIED PRODUCT

Manufactured under a BS EN ISO 9001: 2000

Quality System accepted by BSI

Ideal Boilers Ltd, P.O. Box 103, National Ave, Kingston upon

Hull, HU5 4JN. Telephone: 01482 492 251 Fax: 01482 448 858.

Registration No. London 322 137.

Ideal Stelrad Group pursues a policy of continuing improvement in the design and performance of its products. The right is therefore reserved to vary specification without notice.

28

Ideal Installer/Solar Technical Helpline: 01482 498663 www.idealheating.com

Thermstore -

Installation and Servicing