Solarni sistemi

5/26/2018 Solarni sistemi

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Solar Installation Manual

SOLAR PLUMBING & ELECTRICAL INSTALLATION MANUAL

v03 Nu-Heat

underfloor heating

ground source heat pumps

air source heat pumpssolar thermal

rainwater harvesting

Nu-HeatU N D E R F L O O R & R E N E W A B L E S

INTEGRATED RENEWABLE & HEATING SOLUTIONS


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It is a condition of the warranty that the Certificate of Installation and

Commissioning application form is completed and returned to Nu-Heat

once the system is fully commissioned.

This manual gives the information needed to install your Nu-Heat solar thermal

system. In order for the process to be achieved quickly and easily the principle

of solar thermal should be understood. A useful reference is produced by the

Energy Saving Trust, entitledSolar water heating systems - guidance for

professionals, conventional indirect models (CE131).

The following pages have comprehensive diagrams showing the purpose of

each major system component and its position in the overall scheme. Parts shown

in colour are supplied by Nu-Heat and those shown in outline are generally

supplied by others.

Attention to the advice given in this manual will help to ensure a trouble-free

and effective installation. The requirements of the relevant British Standards,

Water Bye-laws and other regulations should always be met.

If there is any aspect of the installation that you do not understand, please contact

Nu-Heat Technical Support, quoting your system reference number, for advice.

In line with the company policy of product development, Nu-Heat reserves the

right to supply different components to those shown.

This manual is the copyright of Nu-Heat. All rights reserved. No part of this

publication may be reproduced, stored in a retrieval system, or transmitted

in any form or by any means electronic, mechanical, photocopying, recording

or otherwise without prior written permission of Nu-Heat.

INSTALLATION MANUAL FOR NU-HEAT SOLAR THERMAL FLAT PANEL SYSTEM

System Ref:


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section contents

1.1 Checklist

2.0 Fitting the solar panel

3.0 Panel Mounting On-roof

4.0 Fitting the solar pumping station

4.1 Connection of Solar Pumping Station to Panels and Cylinder

5.0 Second fix wiring information5.1 Wiring the solar pump station

6.0 Filling and flushing the solar circuit

7.0 Setting up electrical equipment

7.1 Cylinder thermostat & timeclock EnergyMaster Solar only

7.2 Selecting the operating mode

7.3 User controls immersion heater timer Preheat cylinder

with NIBE 360P

and 1240 only

appendices

1 Aquastar Hot Water loop

2 Solar system maintenance requirements

3 Solar de-commissioning schedule

4 Roth Heliostar 218 and 252 EN 12975 conformity certificate

5 Sample installation checklist

6 Further reading


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1.1 CHECKLISTMains water supply: Check that the performance of the mains supply matches the requirements of the household.

Boiler: If using a Nu-Heat EnergyMaster cylinder in conjunction with underfloor heating then the heat loading is indicated

on the A3System Information. Please refer to the boiler manufacturers recommendations for installing and commissioning

the boiler. Check the boiler installation requirements with the manufacturer as in some cases a by-pass valve may be

recommended between flow and return pipework.

Insulation of pipework: It is necessary to insulate the solar pipework, as well as the primary system pipework. Domestic

hot water pipework should also be insulated, particularly on a pumped loop. Ensure that the incoming cold main is separatedfrom any hot pipework to prevent heat transfer.

Taking delivery: Please check your delivery against the delivery note and report any discrepancies within 7 days of receipt.

Warranty: In order to validate the warranty the Commissioning Checklist & Warranty Application form in the Commissioning

Packattached to this manual must be completed by the installer and returned to the customer.

recommended installation sequence

The general sequence of installation is as shown in this manual. Before starting check the positions of the main components

such as the cylinder and pump station as discussed at quotation stage.

Please note that if the position of the cylinder has changed with respect to the position of the panels then the length and

diameter of the connecting pipe will change also. Full dimensions of the components supplied are given in this manual.

1. Fit the panels to the roof as part of the roofing work to make the property weather-tight.Note: The panel must be

covered during installation to prevent solar irradiation. Pass flexible hoses and sensor cable through the roof.

2. Complete the first fix wiring in accordance with the diagrams in this manual.

3. Fit the cylinder. The other major plumbing works will need to be completed in order to fill the cylinder with domestic

water, and heating primary water if applicable.

4. Fit solar pump station and expansion vessel.

5. Complete the connection pipework between the cylinder and panel array.

6. 2nd fix the wiring of the solar equipment.

7. Fill and flush the solar circuit.

8. Commission the system in order to allows heat to be drawn from the panels.

Only uncover the panels once this has been done.

Solar docking schematics must be read in conjunction with the system docking drawing which will show the

boiler/heat pump mechanical pipework layout.


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2.0 FITTING THE SOLAR PANEL cont.

other important notes

roof loading

The weight of each Heliostar 218 panel is only 35kg and each Heliostar 252

panel is only 36kg. However consideration of additional loads from wind and

snow must also be taken. Consult a structural engineer if there is any doubt as to

the ability of the roof to support the additional load of the solar panel.

lightning protection

The requirement for lightning protection is only necessary when the assessed

risk is greater than 1 in 100,000 according to BS 6651.

installation of sensor

Before finishing work on the roof the solar panel temperature sensor must be

installed. It should be located in the last panel before the return to the cylinder

(i.e the hot outlet, which is the hottest part of the collector array).

To install the sensor remove the rubber bung. Feed the sensor through the hole

in the bung and, after applying some heat conduction paste, insert the sensor

into the pocket and refit the bung.

It is possible to extend the sensor up to 50m using a 0.75mm twin core cable

such as is integrated into the flexible stainless steel flow and return pipe work

(optional).

Important: Prior to installation the collectors should be stored indoors taking

care not to damage the glass. Do not unpack the collectors until just before fitting

to avoid moisture entering into the collector through the holes in the frame.

Flow from solarpump station

Sensor position

Returnto solar

pumpstation


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3.0 HELIOSTAR

SOLAR PANEL ON-ROOF INSTALLATION

general requirements

panel array dimensions

If more than 5 panels are required then they should be arranged in equal banks

of up to 5. This will be discussed at quote stage if more than 5 panels are necessary.

800mm

1200mm

1360mm(

218panel)

1640mm(

252panel)

1820mm(

218panel)

2100mm(

252panel)

1360mm(

218panel)

1640mm(

252panel)

1820mm(

218panel)

2100mm(

252panel)

1360mm(

218panel)

1640mm(

252panel)

1820mm(

218panel)

2100mm(

252panel)

1360mm(

218panel)

1640mm(

252panel)

1820mm(

218panel)

2100mm(

252panel)

800mm 10001200mm

2400mm

800mm 10001200mm 10001200mm

3600mm

800mm 10001200mm 10001200mm 10001200mm

4800mm

800mm 10001200mm 10001200mm 10001200mm 10001200mm

6000mm


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4.0 FITTING THE SOLAR PUMPING STATION

The solar flow control station comprises the following:

1. Mounting holes

2. Pressure relief valve

3. Pressure gauge

4. Filling and flushing valve

5. Isolating valves with non-return valve and dial thermometer

6. Filling and flushing valve

7. Flow regulating valve

8. De-aerator with air bleed

9. Solar circulating pump

10. Mounting bracket

Also mounted on the control station is the solar controller, as well as the connection

point for the solar expansion vessel.

9

1

10

1

2

3

4

5

6

7

8

5

Solar circulating pump

Mounting holes

Pressure relief valve

Pressure gauge

Filling and flushing valve

Isolating valves with non-returnvalve and dial thermometer

Filling and flushing valve

Flow regulating valve

De-aerator with air bleed


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4.0 FITTING THE SOLAR PUMPING STATION cont.

installation

The pump station is supplied preassembled, and is designed to be fitted to the wall

1. To remove the front of the insulated cover first remove the two dial

thermometers these are just a press fit and pull out. The front will then

lift off.

2. When deciding on the position of the solar pump station enough room

must be left to the right of the pump for the solar expansion vessel. There is

a dedicated fitting for connecting this.

3. Mark the position for the mounting screws (1) horizontally at 150mm centres.

Drill two 8mm diameter holes and insert plastic screw plugs.

4. Fix the back housing to the wall using the screws provided.

5. The pressure gauge comes pre-fitted, however should it be removed at any

point to refit it should be screwed in fully, and then unscrewed until it is the

correct way up. It will self seal.

6. All threaded connections are factory tested, however they must be checked

for water-tightness during the system pressure test.

7. Fix the expansion vessel to the wall using the bracket provided. Take care

when identifying the solar expansion vessel as it is rated for higher

temperatures than standard heating types. The solar expansion vessel

can be identified by the sticker on the vessel itself.

8. The solar expansion vessel should be mounted with the plumbing connection

at the top. The connection is made using the 0.5m flexible hose provided.

Make sure to use the fibre washers, as provided. This pipe must remain

uninsulated, as the heat dissipated protects the vessel from extremely

high temperatures.

9. If desired the solar controller can be detached from the pump station and

mounted in a more convenient location. For details on wiring see Wiring the

solar pump station.


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4.1 CONNECTING THE PUMP STATION TO THE PANELS AND CYLINDER

The top connections of the solar pumping station comprise the flow and return to the panel array, whilst the bottom

connections are a flow and return to the cylinder.

flexible stainless steel flow and return pipework

As part of the solar quote there will have been the option of being supplied stainless steel flexible pre-insulated pipe,

complete with sensor cable. This will have been sized according to the length of run, and the required flow-rate, being

available in 16 or 20mm nominal diameter. As part of the kit supplied with this there will be a set of fittings, which should

be used as follows:

Clips will be supplied to fasten the stainless steel flexible pipes, and these should run at approximately 1.5m intervals.

Note:the pipe-work must be earth bonded with a conductor of cross section 6mm2 or more.

12mm flexible stainless steel pipes with 1/2 captivenuts (pair) supplied with panel fixing basic set

1/2 male iron x DN16 or DN20 flexible stainlesssteel fitting (x 2) supplied with (optional) flexiblestainless steel pipe assembly

22mm compression x DN16 or DN20flexible stainless steel fitting (x 2) supplied with (optional) flexiblestainless steel pipe assembly

3/4" male iron x DN16 or DN20 flexiblestainless steel fitting (x 4) suppliedwith (optional) flexible stainless steelpipe assembly

Solar panel array

Solar pumpingstation

Cylinder solar coil


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4.1 CONNECTING THE PUMP STATION TO THE PANELS AND CYLINDER cont.

double banked panels reverse return fitting

If more than five panels are specified then they must be fitted in two banks. This is because the pressure drop across more

than five panels is too great. If the stainless steel flexible pipe is purchased from Nu-Heat then the necessary additional pipe

will supplied to connect the two banks in the roof.

It is important that the pipe work connecting the two banks is configured in a reverse-return layout in order that the pressure

drop across each bank is equal. This will ensure that the flow through each bank is equal, and that one bank doesnt have

more heat stripped from it that the other.

Note:that the pipe work will pass through the roof before being joined.

If the banks of panels are one above the other then the pipe-work is as the following diagram (the additional components

supplied with the optional stainless steel flexible pipe are shown in red).

Short length ofpipe cut frommain length

Short lengthof pipe cutfrom mainlength

DN16 equal tee

5mlength

DN16equal tee

Sensor

Through Quickslate

ThroughQuickslate

ThroughQuickslate

Outflow

Outflow

1/2 MI xDN16/DN20coupling

1/2 MI x DN16/DN20 coupling



Inflow

Inflow

5mlength

ThroughQuickslate

Note:that the pipes marked 5m length refer to the length of stainless steel pipe where this is supplied. If copper is used

then these pipes need to be of equal length.


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If the banks of panels are side by side then the pipe-work is as the following diagram (the additional components supplied

with the optional stainless steel flexible pipe are shown in red).

Note:that the pipes marked 5m length refer to the length of stainless steel pipe where this is supplied. If copper is used

then these pipes need to be of equal length.

It is important that all joints are insulated, and that any material used for this is capable of withstanding 150C. High temperature

nitrile rubber (e.g. Armaflex) is a proven material in this application. This should only be done once the system has been

pressure tested.

making connections with the stainless steel flexible pipe

cutting the pipe

The stainless steel flexible pipe is supplied in standard lengths and can be cut with ordinary (copper) pipe cutters. The cut

should be made in the trough of the corrugation (the minor diameter). The pipe should be left free from burrs to avoid injury.

connecting the stainless steel flexible pipe

In the assembly with the stainless steel pipe will be a connection kit. There are two different styles of connector; eitherMetalflex (assembly codes SPCKR1/16-A or SPCKR1/20-A for single banked systems), or Isiclick (assembly codes

SPCK2/16-A or SPCK2/20-A for double banked systems).

Please see the information overleaf as to how to assemble each of these.

DN16equal tee

5m length

5m length

Through Quickslate 1/2 MI x DN16/DN20 coupling1/2 MI x DN16/DN20 coupling



Outflow Outflow

Inflow Inflow

SensorDN16 equal tee


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metalflex (spckr1/16-a or spckr1/20-a)

1. Cut the pipe to length as described above

2. Place one of the pipe nuts over the pipe

3. Close one of the retaining clips (circlips) around the pipe in the first crease

4. The first corrugation must be compressed to provide a flat sealing surface. To achieve this assemble the fitting without

the fibre washer and tighten as far as possible.

5. Once the first corrugation has been flattened undo the fitting and fit the fibre washer before finally doing the fitting up tightly.

If a sealant is desired then high temperature liquid PTFE should be used (e.g. Rocol 28022 Pipeseal PTFE Liquid)

alternatives to flexible stainless steel flow and return pipework

If the optional flexible stainless steel pipe has not been chosen then copper may be used. Be aware that any solder joints

must be made with high temperature solder on the solar circuit.

Also, any threaded or compression joints should be sealed with a high temperature liquid PTFE sealant (such as Rocol 28022

Pipeseal PTFE Liquid)

The pipe runs must be insulated both to prevent heat-loss and risk of being burnt. Any material used for this must be

capable of withstanding 150C. High temperature nitrile rubber (e.g. Armaflex) is a proven material in this application.

Copper pipework should be sized as indicated in the following table.

Note:the pipe-work must be earth bonded with a conductor of cross section 6mm2 or more.

Minimum pipe diameter Panel Qty

2 3 4 5 4 (2x2) 6 (2x3) 8 (2x4)

10 15 15 15 15 15 15 22

15 15 15 15 15 15 15 22

20 15 15 15 22 15 22 22

30 (i.e. 20+10) 15 15 15 22 15 22 22

Panel to cylinderdistance (m)


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5.0 SECOND FIX WIRING

The following pages give information required for the second fix wiring. The

requirements of the relevant British Standards and IEE Wiring Regulations

should always be met.

BS7671: 2001 (2004). Requirements for Electrical Installations, IEE Wiring

Regulations, Building Regulations

electrical safety (part p)

Installation must be carried out by a Competent Person or, failing that, the

local building control authority must be notified of the proposed work before

commencement and the completed installation must be inspected by a

Competent Person.

safety

Nu-Heat recommends the use of a number of 5A switched fused spurs to supply

the boiler and other electrical items that make up the heating system. Where

live conductors are sleeved in a colour other than brown, coloured marker

sleeves should be fitted at the ends of the wires to identify them.

optional additional equipment

Where connections are shown to equipment that is not supplied by Nu-Heat,

this is for guidance only. In all such cases the suppliers installation information

should be checked before fixing and connecting the equipment.


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5.1 WIRING THE SOLAR PUMP STATION

1. The standard three-pin plug fitted to the solar station must be removed, and a double pole switched fused spur provided

to supply the pump station.

EL SL EL NLNE

1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20S1 S2 S3 S4 VBus N R2 N R1 N L

Temp sensor

Pt 1000

R1 1 (1) A (220...240)V

R2 1 (1) A (220...240)V

2. There is a prewired plug to connect to the pump to thecontroller. To comply with current best practice this must

be disconnected and rewired as shown in the diagram

above. Please note that the cable used to the pump must

be capable of withstanding 90C. The plug on the pump

must still be used, and this will only fit in the correct

orientation. If the solar controller is to be located

remotely from the pump station then this cable must

be extended as required.

3. To wire in the temperature sensor first switch off the

mains supply to the pump station. Then slide the plastic

cover out, and undo the cover retaining screw.

4. For all systems there are two temperature sensors:a. Sensor S1 is located in the panel (see Fitting the solar

panel). This can be extended up to 50m using 0.75mm

twin core cable. If the (optional) stainless steel flexible

pipe has been chosen then the integral sensor cable

should be use to extend the sensor.

b. Sensor S2 is fitted into the lower sensor pocket on the

cylinder to sense the temperature near to the solar coil.

This can be extended if necessary with 0.75mm twin

core cable.

See solar docking drawings for further details. Note: The sensors are not sensitive to polarity.

energymaster cylinder second fix wiring

Please note that for detail of the second fix please see the dedicatedA3 Electrical Drawings produced with each job.

Fuse Solar circuitpump


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6.0 FILLING AND FLUSHING THE SOLAR CIRCUIT

Before filling the solar circuit the cylinder should first be flushed (cleansed) and filled as per the instructions in the relevant

section of the chapter Cylinder installation and filling.

In order to fill and flush the solar system a specialist flushing pump will be necessary, this can be purchased from Nu-Heat.

SAFETY: Please note that if there is any significant solar irradiation, or if the panel has been left uncovered then

there is a scalding risk from the hot fluid. There is also the possibility that if the solar panel has been exposed for

any amount of time that the fluid could flash to steam.

Filling should only ever be done when the system is cold, and when the panel has been suitably covered.

It is necessary to initially flush the system using water, which can also be used for pressure testing. This must then be

drained down and the system filled with antifreeze, and purged of air. This is described below.

1

2

3

4

5

67

Solar panelarray

Hose connectingto mains

Hose drainingto waste


Cylinder solar coil

flushing the solar circuit

1. First check that the solar expansion vessel has the correct air charge of 1 bar. This must be done before the system is

filled with fluid.

2. Connect a hose from the mains to the filling valve (1), and another hose from the flushing valve draining to waste as

shown in the following diagram

3. Open the filling valve (1) and flushing valve (7)

Operation of Flow and return ball valves (2 and 3)

Open

Close

Spring

NRV

Internal detail

4. Turn the return ball valve (3) by 45

in order to open the non-return valve.

The flow ball valve (2) should be

horizontal, i.e. in the closed position.

5. Turn on the mains and allow the

water to flow through the system

until it appears clear and free from

debris at the drain.

14mm

Note: on new versions of the solar

controller the ball valves are

opened and closed by rotating

the dial thermostat.


17/40


5

123

4

67

Solar panelarray


Hose draining to waste


Cylinder solar coil

6.0 FILLING AND FLUSHING THE SOLAR CIRCUIT cont.

WARNING if the panel has been left uncovered then there is a scalding risk

from the hot fluid. There is also the possibility that if the solar panel has

been exposed for any amount of time that the fluid could flash to steam.

Filling should only ever be done when the system is cold, and when the

panel has been suitably covered.

draining the water

6. Remove the hose from the flushing valve (7) and connect it to the drain valve (5)

7. Put the outlet of both hoses to waste, as per the following diagram.

8. Set the flow ball valve (2) and the return ball valve (3) to 45 in order to open

the non-return valves

9. Open the drain valve (5) and then the filling valve (1)

10. Allow the solar fluid (water at this stage) to drain to waste. Be aware that

there may be fluid left in the panel and the solar coil in the cylinder

11. Close the filling valve (1) and drain valve (5).


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filling with solar antifreeze, pressure testing the solar circuit and purging

12. With the system drained, set up the flushing pump with the antifreeze as in the diagram on the following page, with

the hose removed from the drain valve (5) and replaced on the flushing valve (7).

13. Close the flow ball valve (2) by turning it clockwise. The return ball valve (3) should remain at 45.

14. The inlet to the flushing pump should be put into the antifreeze, as should the outflow hose.

mixing the antifreeze

The antifreeze is supplied in 25 litre drums, filled with 10 litres of antifreeze. The other 15 litres should be filled

completely with water, giving a concentration of 40%.

15. Switch on the filling pump, and open the filling valve (1) and flushing valve (7). Continue to run the pump until there

are no air bubbles at the return to the antifreeze container.Hint: Flush at a pressure of between 3-4 bar. To aid

purging pulse the pump on and off. Also closing the flushing valve (7) to allow pressure to build up, and then

opening it again can help clear air pockets.

5

1

23

4

67

Solar panel array


Connect toflushing pump

Flushing pump

Cylinder solar coil


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16. To vent the pump close the return ball valve (3) and set the flow ball valve to 45. Release the pump vent screw to

make sure the pump rotor is purged. Flush the pump for about a minute.

17. Close the flow ball valve (2) and re-set the return ball valve to 45, and make sure that there is no further air in the system.

18. Once the air has been completely purged close the flushing valve (7) and allow the pressure to rise to 5 bar.

19. Close the filling valve (1), and shut off the pump.

20. Set the flow ball valve (2) to 45 to open the ball valve, and ensure that the return ball valve (3) is also set at 45. Also

make sure that the flow regulating valve (6) is open (the slot in line with the pipe).

21. The system should now be thoroughly checked for leaks at all the joints. The pump station is tested at manufacture,

but should still have all joints inspected for signs of leakage. Leave the system overnight and repeat the inspection.

Note: It is not possible to rely on the pressure gauge reading to indicate the presence of a leak as the expansion of the

fluid may give erroneous indications.

22. Once the pressure test is complete, open the flushing valve (7) to let the pressure down to 1.5 bar, then close the

flushing valve (7).

23. Open the air vent (4) to remove any air from the deaerator.

24. The solar pump should be run to compete the air purging. To do this set both the flow and return ball valves (2&3) to open

(vertical). Switch the power on to the solar pump station. The controller should come on, as indicated by a green LED.

25. To manually bring on the pump press the right hand button until the display reads hP then hold it down. Further options

will become available. Use the right hand button to scroll through these until HND1 is reached. Press the middle

button, and the SET icon will flash.

26. Use the right -hand button to change it from Auto to ON and press the middle button again to confirm the selection.

The pump should start running. Make sure that it is set to speed III.

27. After about half an hour the manual air vent on the de-aerator (4) should be checked again, and then several times

within the first day of running. This will ensure any residual air is removed.

28. After having been left to run in this way for a several hours then the controller should be commissioned so that the solarsystem can start to draw heat from the panels.

29. The flow rate must be adjusted for the solar circuit by varying the pump speed, and using the flow adjusting valve (6).

The flow can be measured on the flow gauge on the pump station. The flow rate should be set to 1 litre/minute per

panel, e.g. 3 a three panel system requires 3 litres per minute.

30. Only at this stage should the cover be removed from the solar panels in order that they can receive solar irradiation.


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00:00C

K

Backward Forward

Set

7.0 SETTING UP THE ELECTRICAL EQUIPMENT

setting up the solar controller all configurations

The solar system is supplied with the Deltasol BS controller. As supplied this is

attached to the pumping station. If required it can be removed for positioning in

a more convenient location.

There are three buttons for altering the settings on the controller, as shown in

the diagram to the right.

In running mode the backward and forward buttons can be used to scroll between

the collector temperature (COL), the cylinder temperature (TST) and the running

hours (h P). It is advisable to check the calibration of the temperature sensors

by placing them in hot water, which should also be measured with an accurate

digital thermometer.

To access the setup functions press and hold the Forward button. The table

below lists all of the functions available. See the notes below about any functions

that need the settings to be altered.

00:00CK

!

SET

Cylinder coil temperature sensor Function Setting

Cylinder limit temperature sensor

SET mode(flashing)

DegreesCelsius

DegreesKelvin

Relay 1 activeRelay 2 active

Maximum store limitationachieved/exceeded

Antifreeze function activated(not generally used)Solar panel temperature sensor

Solar panel

Solar pump

!& = Sensor

defect


21/40


7.0 SETTING UP THE ELECTRICAL EQUIPMENT cont.

setting up the solar controller

Channel Arr Description

1 2*

COL x x Temperature collector 1

TST x Temperature store

TSTL x Temperature store 1 bottom

TSTU x Temperature store 1 at the top

S3 x Temperature sensor 3TRF 1 1 Temperature return sensor

S4 2 2 Temperature sensor 4

n% x Pump speed relay1

n1% x Pump speed relay 1

h P x Operating hours relay 1

h P1 x Operating hours relay 1

h P2 x Operating hours relay 2

kWh 1 1 Heat quantity kWh

MWh 1 1 Heat quantity MWh

Arr 12 Arrangement

DT O x x Switch-on temperature difference

DT F x x Switch-off temperature difference

DT S x x Set temperature difference

RISx x x Rise

S MX x x Maximum temperature store 1

Channel Arr Description

1 2

EM x x Emergency temperature collector 1

OCX x x Option collector cooling collector 1

OCN x x Option minimum limitation collector1

OCF x x Option antifreeze collector 1

OREC x x Option recoolingO TC x x Option tube collector

AH O x Switch-on temp. for thermostat 1

AH F x Switch-off temp. for thermostat 1

OHQM x Option heat quantity measurement

FMAX 1 1 Maximum flowrate

MEDT 1 1 Antifreeze type

MED% MEDT MEDT Antifreeze concentration

nMN x Minimum pump speed relay 1

n1MN x Minimum pump speed relay 1

HND1 x x Manual operation relay 1

HND2 x x Manual operation relay 2

LANG x x Language

PROG XX.XX Program number

VERS X.XX Version number

Note: Not all functions are necessary see below for details of necessary alterations.

Note: All current Nu-Heat systems are configured as Arrangement 1 (Arr.1)

To alter any of the function settings hold the Forward button to enter function mode.

Scroll through the functions using the Forward and Backward buttons.

Once the desired function is located press the Set button then use the Forward and Backward buttons to select the

different options, then Setto confirm the selection.

Note: If Set isnt pressed then the previous selection will remain. The programmer will revert back to running mode if left

for a few minutes.


22/40

7.0 SETTING UP THE ELECTRICAL EQUIPMENT cont.

setting up the solar controller

S MX Maximum store temperature:

The default maximum store temperature is 60C. This may be increased to 70C

in order to get more solar gain from the system.

HND1 Relay 1 operating mode:

Relay 1 controls the solar pump, and the operating mode would usually be

Auto. If the pump is needed to run for maintenance purposes then it can be

switched to ON.

cylinder thermostat and timeclock

(energymaster solar cylinder only)

The EnergyMaster cylinder thermostat should be set to between 6570C.

The boiler thermostat must be set to be 10C higher than the cylinder

thermostat setting.

timing the cylinder for maximum solar gain

The cylinder timeclock should be set in accordance with water usage. If domestic

water is not going to be drawn during the day and it is judged that the solar is

able to heat the cylinder then the boiler can be timed to be off in order to getthe most out of the solar gain. Obviously this will entail different setting for

summer and winter.

If the domestic water capability of the cylinder is sufficient for the early evening

then keeping the boiler timed off will allow further solar gain, with the boiler

then being timed to heat up any deficit for the mornings water usage.

For more information please see theSolar User Guide.


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programming day and time

1. Open the cover. Press the R/S

button using a non-metallic object

such as a matchstick. This will reset

the timeclock to factory settings,

including time and date.

2. Press PROGtwice until SET ON

TIME appears at the top of the

display and MOTUWETHFR

appears at the bottom of the

display (days of the week).

3. Use the +/-to set the first ONtime.

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

12:00 PMMO

ON

OFF

AUTO

ALL DAY

+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

12:00 PMTU

SET TIME+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

12:02 PMMO

SET TIME+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

12:00 PMMO

SET TIME+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

4:30AM

MO

SET TIME

1

ON+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

8:00AM

MO

SET TIME

2

OFF+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

11:15MO

SET TIME

6

OFF

PM

+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

12:30 PMTU

SET TIME

4

OFF+1HR

MAN

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

11:15 PMFR

SET TIME

6

OFF+1HR

MAN

programming on/off times

4. Press NEXT ON/OFF once only. 5. Use the +/-to set the first off time. 6. Press next ON/OFF once again and

repeat steps 3-6 to set subsequent

ON and OFFtimes.

7. Press DAY/HOL and SASU will

appear at the bottom of the screen

(weekend).

8. Repeat steps 3-6 to set the

weekend times.

9. Press PROGto return to run mode.

Note: The timeclock will automatically adjust between GMT and BST.

7.1 TS715 SINGLE CHANNEL TIMECLOCK

energymaster solar cylinder only

Ensure that the timeclock is set to your requirements as follows:


24/40

SELECT

PROG

NEXT ON/OFF

+

DAY/HOL

COPY

R/S

12:45 AMMO

ON

OFF

AUTO

ALL DAY

+1HR

MAN

7.2 SELECTING THE OPERATING MODE

Behind the flap is the red select button; each press changes the operating

mode as follows:

ON The output is constantly on.

OFF The output is constantly off unless +1hr is pressed.

AUTO The output switches on and off to the set programme.

ALLDAY The output switches on at setting 1 and stays on until setting 6.

operation

If the colon is blinking the unit is in run mode. It will

automatically switch the underfloor heating on and off

at the times set. However, useful overrides are provided

which enable the user to make temporary changes to the

on/off times without re-programming the unit.

manual overrides

When in OFF, AUTO or ALLDAY modes the +1HR buttoncan be used to switch from OFFto ON for just one hour,

or to extend an existing period by one hour. This will be

cancelled by pressing the +1HR button again, pressing the

MAN button or when the next ON programme is reached.

When in AUTO or ALLDAY modes pressing the MAN

(manual) button will switch from ONto OFF, and vice

versa. This override will only last until the next programmed

change, when the automatic programming will resume, or

until the button is pressed again.

When the above overrides are selected a bar appears inthe display against the appropriate legend.

reset

Should the timeswitch be disconnected from the mains a

small battery symbol will blink on the left of the display.

After the second midnight (between 24 and 48 hours) the

display will go blank and settings will be lost. When mains

power is restored it is recommended that the unit be reset

by inserting a non-metallic object such as a matchstick in

the R/S hole under the flap. This will restore the factory

settings including the time and date. The output will beOFF. Note that the colon will be blinking, meaning that the

unit is in RUN mode and will switch ON and OFF according

to the factory programming until reset.


25/40


7.2 SELECTING THE OPERATING MODE cont.

choice of 12- or 24-hour clock

At any time whilst in run mode the time displayed can be toggled between a

12-hour clock with an am/pm indicator or a 24-hour clock by pressing and

holding both DAY/HOL and next ON/OFF buttons for 2 seconds.

g.m.t./b.s.t.

The timeclock is programmed to automatically switch between GMT and BST.

factory pre-set programme

The unit will be pre-set to 7-day/24-hour mode; this can be altered by moving

the pins under the backplate.

Firstly remove the screws under the unit and remove the front face.

There are three operating modes available:

1. 24 hour operation; the same

programme each day,

2. 5-day/2-day operation; different

programmes for weekdays and

weekends,

3. 7-day operation; different

programmes for each day.

Set the pins as shown for the operating mode required.

The pre-set factory ON/OFFtimes can be reinstated by pressing the recessed

R/S button with a non-metallic object such as a matchstick. Please remember

that underfloor heating takes longer to warm up and cool down than conventional

radiators and the heat settings should reflect this. The factory settings are

unlikely to be appropriate.

1 2 3 4

1 2 3 4

1 2 3 4


26/40

7.3 USER CONTROLS IMMERSION HEATER TIMER

preheat cylinder with 360p exhaust air heat pump and 1240 ground source heat pump only

The preheat cylinder has an immersion heater to provide legionella protection.

protection from bacterial growth, e.g. legionella

With a preheat solar cylinder feeding a Heat Pump the immersion heater at the bottom of the cylinder is designed to

purge the preheat cylinder to protect it from potential legionella growth. The timer controls the immersion heater.

The Heat Pump has an Extra Hot Water temperature boost which should be programmed to be on at the same time as

the cylinder immersion so that the whole storage volume is purged by raising it to 60C.

A purging cycle should be timed for at least once a week (depending on your assessment of risk). It is advised that this is

done over-night so as not to detract from the period of solar gain. This will be set up during the heat pump

commissioning process.

Note: Heating the water will not be dangerous to users, as the blending valve protects users from high temperature water.

For the 200 litre cylinder the purging cycle should be run for 4 hours in order to ensure that the cylinder reaches

the desired temperature.

For the 300 litre cylinder the purging cycle should be run for 6 hours in order to ensure that the cylinder reaches

the desired temperature.

This is the worst case timing. If the cylinder is already hot then the thermostat will switch the immersion heater off when

temperature is reached. The thermostat will be set at 60C during the commissioning process.

programming the immersion heater timer

Refer to manufacturers instructions.


27/40


APPENDIX 1 AQUASTAR HOT WATER LOOP

The Aquastar2 instant hot water loop (or for larger systems, Aquastar3) may be

used with many modern hot water cylinders to give hot water at the taps without

delay. The hot water loop will remain hot as dictated by the timer settings. Hot water

drawn outside of the set times will take time to flow hot, as if the hot water loop

were not present. The Aquastar hot water loop provides the ideal basis for the

connection of towel rails throughout the house as very little extra plumbing is

required. Heat for the towel rails is drawn from the existing heat reservoir in

the hot water cylinder, usually without the need to bring on the boiler.

Notes:

The Aquastar hot water loop is only suitable for mains pressure hot water cylinders.

Check that the installation of a pumped hot water loop is consistent with local

water bye-laws.

As the towel rails are heated by mains water they must be non-ferrous to prevent

corrosion. The total output from all towel rails connected to the hot water loop must

not exceed 5000 watts. Please contact Nu-Heat if the total output will be greater.

The temperature of the loop, and therefore of the towel rails, is thermostatically

controlled to prevent scalding. On the side of the Aquastar2 circulating pump

there is a thermostat or, on larger systems, there is a separate thermostat

mounted on a nearby pipe.

The return temperature of the hot water loop should be 50C or greater in

accordance with BS6700 and the HSCs Legionnaires disease: The control of

legionella bacteria in water systems Approved Code of Practice and Guidance.

If the temperature of circulation necessary to achieve this poses a significant risk of

scalding then the temperature should be blended as close to the outlet as possible.

12:00

Discharge

Larger systems have Aquastar

components supplied as separate items

Pump

Expansionvessel

Timeclock

Non-return

valve

Flush/drain

Pipe stat

Appearance ofpumps may vary

The hot water loop should be run

throughout the year. If it is inactive for

more than a week there is a risk of bacterialgrowth, such as legionella.


28/40

Careful thought should be given to the layout of the hot

water loop and the fittings used on it. Flow pipework to

bathrooms should be sized according to the hot water

requirements of the household. Typically a small to

medium sized installation will require 22mm flow

pipework, a large installation may require 28mm or greater.

15mm pipe may be used for the last 2 metres where thepipe connects to the Aquastar2 pump (22mm for Aquastar3).

Individual hot water outlets should be fitted with flow-limiting

valves to prevent unnecessarily high water flow rates affecting

the water pressure at critical points such as shower units.

It is recommended that only lockshield valves are used

with towel rails on a secondary hot water loop. Towel rails

should not be isolated from the loop for any significant

amount of time (more than a few days) or there is a risk of

bacterial growth, such as legionella. Fit a balancing valve or

towel rail at the farthest end of each loop. If bathrooms are

to be connected to the hot water loop in parallel, balancing

valves must be fitted on each leg so that balancing betweenbathrooms can be effective (see illustration). The hot

water flow and return pipes should be insulated to prevent

unwanted heatloss. This is particularly important where hot

pipes run alongside the supply pipes to cold tap.

APPENDIX 1 AQUASTAR HOT WATER LOOP cont.

Radiatorlockshield

valves

Outlet balancingvalvesPump

Flush/drain

Discharge

For cylinder connection details refer tocylinder manufacturer

planning and installing

the loopBathroom 1

Bathroom 3 Kitchen Utility

Bathroom 2

Loopbalancingvalves

Non-returnvalve

(may be partof pump)

out

return


29/40


E

N

L

E

N

L

N

L

N L 1 2 3 4

N

L

N

L

SL

E

L

SL

E E E

N L SL E

90

70

50

30C

SL L E

Switched Live

Live

Neutral

Earth

Live voltagemarker sleeve

KEYNote: colour ofwires may varyfrom those shown.

Earth whererequired.

SL

L

N

E

aquastar 2 hot water loop

aquastar 3 hot water loop

Switched fused 5A spur

Domestic hot water pumpwith integral timeclock

and thermostat

Switched fused 5A spur Single channel timeclockMP1CP-C (type TS715)

Internal wiring

Pipe thermostat

Internal wiring

Domestic hotwater pump

APPENDIX 1 OPTIONAL HOT WATER LOOP PUMP

second-fix: nu-heat aquastar hot water loops

Notes: See introduction for wiring safety notes.

These diagrams should be read in conjunction with any third party manufacturer

documentation.

Fit link betweenterminals L and 1


30/40

APPENDIX 2 SOLAR SYSTEM MAINTENANCE REQUIREMENTS

The following checks should be carried out at the specified time intervals. A record

should be kept that all checks items were found to be satisfactory. If possible,

the installer should be engaged for maintenance work.

Note: Collector checks will more than likely require access to the roof. This

should not be attempted without a suitable risk assessment being completed.

annually:

collector

Collector glazing is undamaged.

Collector glazing is reasonably clean.

There is no visible evidence of leakage on the roof

Where visible, absorber paintwork or coating is sound.

The roof fixings are firm and the roof covering satisfactory by visual inspection.

solar circuit

The solar system pressure is correct according to the pressure gauge

(1.5 bar +/- 0.2 bar)

There is no visible evidence of leakage

Safety valve manually checked Antifreeze concentration checked. Should protect to -19C.

Deaerator checked for air buildup

Electrical controls and temperature sensors are operating correctly

Flow rate remains at level stated on commissioning certificate

The circulating pump is operating without due noise.

Pipework insulation is firmly in place.

There are no condensation or damp spots, particularly around the pipework

and fixings in the roof space.

All safety and information labels are in place.

every 5 years:

The system should be emptied, flushed and refilled with fresh antifreeze


31/40


7

APPENDIX 3 SOLAR DECOMMISSIONING SCHEDULE

energymaster cylinder

Should it be necessary to decommission for maintenance or in the case of a fault

the system the panel will need to be covered to prevent further solar irradiation,

the power supply switched off. The expansion volume of the system should be

sufficient for the system to be left with fluid in it. An engineer should be called

as soon as possible to enable the system to be brought back into normal operation.

The panel covering must be robust enough to stay in place until it is possible

to re-commission the system.

Should it be necessary for any reason to drain the solar circuit this is done as follows:

1. Connect hoses to the filling valve (1), and drain valve (5)

2. Put the outlet of both hoses to waste, as per the following diagram.

3. Set the flow ball valve (2) and the return ball valve (3) to 45 in order to open

the ball valves.

4. Open the drain valve (5) and then the filling valve (1)

5. Allow the solar fluid to drain to waste. Be aware that there may be fluid left in

the panel and the solar coil in the cylinder

6. Close the filling valve (1) and drain valve (5).

7. The panel covering must be robust enough to stay in place until it is possible

to re-commission the system.

Solar panel array




Cylinder solar coil

5

6

123

4


32/40

APPENDIX 4 ROTH HELIOSTAR 218 & 252

en 12975 conformity certificate


33/40


All voltages

isolator

All voltages

supplementary

All voltages pump

All voltages

support

All voltages fuse

All voltages

sheath and wiring

All voltages cable

All voltages class 2

ELV segregation

A double pole isolation for the fitted solar equipment i.e. controller/

pump/valves, typically with a switched fused spur either located adjacent

to the pump or controller.

Supplementary (equipotential) earth bonding to be replaced where already

present. Usually required for simultaneously accessible exposed and

extraneous conductive parts. This typically includes pipes and pump

housings, etc.

Solar pump or other similar solar primary item to be connected via heat

resisting flex/cord (not fixed cable), marked at least to tolerate 85KC

and cable sheath clamp to be correctly used.

Fixed wiring clipped correctly with mechanical protection (trunking, etc.)

if at risk of physical impact. Minimum clip spacing 250mm horizontal,

400mm vertical. No PVC cable to be in contact with copper pipes. Externalcables greater than 30cm are to be supported. All cables to be protected

from sharp edges, etc. by purpose guides or grommets.

Over-current protection should be present of the correct capacity for

cables and connected appliances.

Conductor sheath to be continuous into joint enclosures, conductors to

be securely fastened to terminals, conductor insulation to be within 2mm

of terminals.

All cable conductors external of joint enclosures to be insulated and

sheathed. External cables to be UV stable.

Class 2 double insulation marked on all appliances normally intended for

user operation.

The separation between cables of different voltage classes should be at

least 50mm, or placed in a separate conduit/trunking, or both insulated

for highest voltage present.

APPENDIX 5 SAMPLE INSTALLATION CHECKLIST

For solar sealed primary systems drainback and fully filled.

Elec 1

Elec 2

Elec 3

Elec 4

Elec 5

Elec 6

Elec 7

Elec 8

Elec 9

electrical wiring

ref item description initials


34/40

All voltages

enclosures

ELV cable joints

All voltages

location

All electrical enclosures, including existing outlets from which spurs have

been taken, to be refitted so as to ensure touch-proof connections and

durability in service. Elec 13 ELV cable joints. All cable joints to be

touch-proof and in joint boxes suitable for the installed environment,

e.g. IP20 indoor, IP56 outdoor.

All cable joints to be touch-proof and in joint boxes suitable for the installed

environment, e.g. IP20 indoor, IP56 outdoor.

All controllers, pumps, etc. to be installed in suitable environments, not in

bathrooms and not accessible to people using a bath or shower. Equipment

mounts to be secure and durable for the life of the installation. Location to

be accessible for service and user operation if intended (e.g. temperature

displays to be visible where available).

APPENDIX 5 SAMPLE INSTALLATION CHECKLIST cont.

Elec 10

Elec 11

Elec 12

electrical wiring


The glazing seals

are weather-tight

and sound

Collector sensor

clamped, insulated

from ambient

External pipesinsulated

Shading

Roof fixings

Requires roof inspection. Where suspect, tested by 1 Bar water spray

perpendicular and horizontal, then visual for drips/condensation mist

inside glass.

If temperature sensor is present, it should be a good mechanical fix, insulated

and not loose.

Where insulated, protected from UV, weather and vermin.

No significant daily shading for more than two hours between spring

and autumn.

Requires roof inspection and within loft (to see sarking felt, etc). Where

suspect, further tested by 1 Bar water spray perpendicular and horizontal

then visual for drips/condensation. Fixings to be firmly attached to the

roof structure and visual inspection that the roof covering is weatherproof.

Roof 1

Roof 2

Roof 3

Roof 4

Roof 5

roof



35/40


Indicator of

circulation

The recommended

flow-rate is

achieved through

the primary circuit

pipework

System is at the

correct operating

pressure

Reverse flow

protection

Initial 100 Celsius

prevention

Secondary 100

Celsius prevention

Tertiary 100

Celsius prevention

The safety devices

are operatingcorrectly

Gaseous bubbles

expelled from the

transmission liquid

Safe means to verify the designed circulation to the end-user, i.e. two

thermometers (Flow/return temperatures), flow-rate indicator or other

fault indicator.

Requires an indicative flow indicator to be fitted i.e. in-line meter or

electronic monitor. Flow rate checked against manufacturers

recommendation. Engage override switch to test if solar gain is not present

or observe normal circulatory function.

Pressure gauge dial to show at least greater than static head. Checked

when pump on and off.

A device to prevent heat loss from unintentional reverse circulation.

Thermostatic control of secondary storage (i.e. shut off primary circulation

with automatic restart or self-setting temperature relief valve to EN 1490).

Additional to Operation 5: unless a dedicated cold water cistern feeds the

DHW store (i.e. is also open vented), then a manual reset device to cut off

thermal energy (i.e. where collector wholly above store, then switch off

pump or otherwise motorised valve).

In addition to Oper 5 & 6, heat dissipation to control secondary storage to

below 100C (e.g. temperature/pressure relief valve).

Open vent and/or safety valve terminate in safe positions with low risk of

accidental steam escape.

Assessed by noise and through excessive noise with maximum circulation.

Requires override switch to test or observe normal function if solar gain is

not present.


Oper 1

Oper 2

Oper 3

Oper 4

Oper 5

Oper 6

Oper 7

Oper 8

Oper 9

operation



36/40

Contamination

Drain point

Fittings in contact

with utilitys water

Vent termination

Pressure Equipment

Regulations (PED)

Sound

engineering practice

or higher conformity

Temperature of

materials

Indoor components

freezing

Anti-scald

Pressure limit

If fitted, temporary connection to sealed system should have double check valve

(fitted to cold water side), control valves both sides and flexible hose

disconnected. For cisterns, 20mm air break (or twice pipe diameter) to spill level

at float valve.

Accessibly fitted on all low points, including pre-heat store.

All fittings in contact with original utility supply of water must be marked

with certain third party approvals and suitable for attached solar collector

stagnation temperatures and pressures. Non-metallic materials in contact

with utility supplied water meet the relevant parts of BS 6920 and be

suitable for the purpose to which they are intended to be subjected.

Primary vent into primary cistern, secondary into secondary. Vent pipes to

be no less than 19mm ID, no reduction in bore, no deformable material

and be insulated.

If collector is not EN 12975, then assembled system must protect collector

to below maximum design temperature. If system and collector are not

designed and built along traditional lines (i.e. the assembled products and

materials do not have a history of long and safe use) with each pressure

component labelled, then evidence left on site of higher conformity.

Pipe clips and insulation should withstand collector stagnation temperatures if

in direct contact with pipe work or where there is foreseeable risk of contact.

Components subject to risk of freeze damage to be protected i.e. trace

heated, antifreeze.

If secondary system can be heated to more than 60C from the solar, theneither an adjustable automatic blend valve (anti-scald) to be fitted to the DHW

distribution, or automatic pump control to be capable of l imiting to 60C.

Route from collector to over-pressure safety via non-deformable pipe with

no possibility of blocking, diameter reduction, valve closure, scaling or freezing

to the point of discharge. Discharge constantly falling and unobstructed. No

risk to people, materials or environment from termination location.


Gen 1

Gen 2

Gen 3

Gen 4

Gen 5

Gen 6

Gen 7

Gen 8

Gen 9

general



37/40


Limescale

prevention pipes

Limescale

prevention

exchanger

Insulation

Pre-heat store

sensor

Legionella

All unions andglands are free

from leaks

Pipework

Pipework

insulation

Making good

No possibility of lime deposit in circuits that would significantly affect

performance within collector primary loop in the lifetime of the system.

If limescale risk in secondary circuit is above 100mg/l (calcium carbonate

equivalent) then store to have control to prevent secondary water being

solar heated greater than 60C, or a cleaning facility to be provided for

heat exchanger (i.e. plate exchanger or cylinder hatch).

When replaced, non-solar pipes connecting to store to have minimum 1

metre insulation to concealment point.

Sensor clamped and insulated from ambient.

Check presence and function of auxiliary heat source with control fitted to

heat at least 60C.

Evident from stains or by moisture on pipes and fittings.

All pipework is adequately secured and insulated and components are

adequately supported. Pipes and fittings should be securely fixed whilst

allowing for thermal movement (overhead pipes must use clip-over type).

Rigid pipe spacing horizontal 1.8m, vertical 2.4m; non-rigid pipe spacing

horizontal 0.3m, vertical 0.5m.

All pipe insulation is firmly in place, including on roof. No significant gaps

on slits, clips and ends.

Penetrations in building made good. Debris removed.


Gen 10

Gen 11

Gen 12

Gen 13

Gen 14

Gen 15

Gen 16

Gen 17

Gen 18

general



38/40

Method for assessing solar water heaters. Elastomeric materials for absorbers, connecting pipes

and fittings.

Code of practice for solar heating systems for swimming pools.

Performance characterisation of stores for solar heating systems.

Thermal solar systems and components. Custom built systems. Test methods.

Thermal solar systems and components. Custom built systems. General requirements.

Solar energy. Vocabulary.

Thermal solar systems and components. Factory made systems. Test methods.

Thermal solar systems and components. Factory made systems. General requirements.

Thermal solar systems and components. Solar collectors. Test methods.

Thermal solar systems and components. Solar collectors. General requirements.

APPENDIX 6 FURTHER READING

BS 7431

BS 6785:1986

prEN 12977-3

prEN 12977-2

prEN 12977-1

BS EN ISO 9488

BS EN 12976-2

BS EN 12976-1

BS EN 12975-2

BS EN 12975-1

solar standards


39/40


APPENDIX 6 FURTHER READING cont.

Workmanship on building sites.

Specification for unvented hot water storage units and packages.

Requirements for electrical installations.

Copper indirect cylinders for domestic purposes.

Specifications for expansion vessels using an internal diagraph for sealed hot water heating systems.

Application, selection and installation of expansion vessels and ancillary equipment for sealed

water systems.

Methods of specifying thermal insulation materials on pipes, ductwork and equipment in the

temperature range of -40C to 700C.

Specification of forced circulation hot water central heating systems for domestic premises.

Telecommunications equipment and telecommunications cabling.

Code of practice for thermal insulation of pipes and equipment.

Specification and design, installation, testing and maintenance of services supplying water for

domestic uses within buildings and their curtilages.

Lightning Protection Code of practice for protection of structures against lightning.

Code of practice for roofing and tiling Design.

Suitability of non-metallic products for use in contact with water intended for human consumption

with regard to their effect on the quality of the water.

BS 8000

BS 7206

BS 7671

BS 1566

BS 4814

BS 7074

BS 5422

BS 5449

BS EN 12831

BS EN 12828

BS 6701

BS 5970

BS 6700

BS 6651

BS 5534

BS 6399

BS 6399BS 6920

other relevant standards


40/40

DESIGN | INNOVATION | EXPERTISE | SERVICE

If there is any aspect of the installation that you do not understand, please

contact Nu-Heat Technical Support for advice.

All illustrations and diagrams in this manual are the property of Nu-Heat.

All rights reserved. No part of this publication may be reproduced, stored

in a retrieval system, or transmitted in any form or by any means electronic,

mechanical, photocopying, recording or otherwise without prior written

permission of Nu-Heat.

Heathpark House, Devonshire Road,

Honiton, Devon EX14 1SD

Tel: 01404 549770

Fax: 01404 549771

Web: www.nu-heat.co.ukEmail: [email protected]

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