Baxi 2nd Fix Solar User Manual

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Page 1

Please read these instructions before installing or commissioning.

This Solar Thermal Domestic Hot Water System should only be

installed by a competent person.

PLEASE LEAVE THESE INSTRUCTIONS WITH THE

USER FOR SAFE KEEPING.

2nd Fix Solar Manual

Page 2

Index

transmitted in any form or by any means, or stored in any retrieval system of any nature (including in any database), in each case whether electronic, mechanical, recording or otherwise, without prior written permission of the copyright owner, except for permitted fair dealing under Copyrights, Designs and Patents Act 1988.

Applications for the copyright owner’s permission to reproduce or make other use of any part of this publication should be made, giving any details of the proposed use to the following address:

The Company Secretary, Baxi Heating UK Ltd, Brooks House, Coventry Road, Warwick CV34 4LL.

Full acknowledgement of author and source must be given.

WARNING: Any person who does any unauthorised act in relation to a copyright work may be liable to criminal prosecution and civil claims for damages.

2 Index 3 Introduction to Solar 4 Hydraulic station specifications 5 Differential temperature controller specifications 6 Ancillary components

Expansion vessel Solar heat transfer fluid

7 Cylinder specifications

Unvented Cistern-fed vented

9 Safety information

11 Installation of hydraulic station

Parts list Identification of components Pipework installation - general Installing the hydraulic station - positioning Installing the wall brackets and hydraulic station Installing the safety group Connecting the solar expansion vessel Connecting pipework

17 Commissioning of system

Air test Flushing and filling the pipework

19 Installation of solar controller

Appliance installation Opening the controller Electrical connection overview 230/240V~ connections Solar gain measurement Connection of temperature sensors Control of auxiliary heat input

24 Commissioning of hydraulic station

Ensure the solar primary system is free from air Setting the system pressure

25 Commissioning of solar controller

Main menu Control button Menu “info” Menu “programming” Menu “Manual operation” Menu “Basic adjustment” Overview of display and operating elements Controller functions General controller functions Cylinder heating by solar primary system Systems with two storage cylinders Rotational speed regulation Thermostat (heating) Thermostat (cooling) Tube collector Sensor monitoring Flow monitoring System protection function Frost protection Energy productivity measurement Operating hours meter

37 Setting the system flow rate

Checking and adjusting the flow rate Installation of the thermal insulation Commissioning record

41 Maintenance

Check heat transfer fluid Maintenance of the collector Cylinder

42 Fault Finding

Failures with error message

45 Spares

Spare parts and accessories

46 Warranty

Standard warranty terms & conditions

Page 3

1.0 Introduction to Solar

1.1 Description

1. Thank you for purchasing a high quality Solar Thermal Domestic Hot Water System.

2. The sun is the ultimate source of most of our renewable energy supplies. Energy from the sun is clean and abundant.

3. There is a widely held opinion that the UK does not have enough sun to make solar systems worthwhile. In fact par ts of the UK have annual solar radiation levels equal to 60% of those experienced at the equator.

4. However, this energy is not received uniformly throughout the year. Some 70% of UK annual radiation is received over the period April to September and 25% is received in the months of June and July.

5. Solar water heating technology captures energy from the sun and transfers this to a water heater to raise the water temperature therefore reducing the reliance on fossil fuel energies such as gas, oil and electricity. Up to 60% of a dwelling’s annual hot water requirement can be provided by a solar water heating system. The balance is provided by traditional means via a second heat exchanger connected to a fossil fuel boiler or electrical heating by electric boiler or immersion heater.

6. The water heating system provides all the principal components required for an efficient solar water heating system. The sun’s energy is captured by a series of solar collector panels through which a special heat transfer fluid is pumped. As the fluid passes through the collector panels its temperature is raised. The heated fluid is circulated through a heat exchanger coil in the base of the solar storage cylinder transferring the heat gained to the stored water, gradually raising its temperature. The cooled fluid then returns to the collector panel to be heated again. Heating by the solar coil is controlled by a solar differential temperature controller that ensures the system will only operate when there is useful solar heating gain at the collector panel. As the sun’s energy input to the collector panels is variable supplementary heating by a conventional boiler or electric immersion heater should be provided. The optional cylinders that can be supplied with the package provide a supplementary heat exchanger coil and immersion heater as standard.

Cold Supply for Domestic Hot Water Domestic Hot Water Outlet Auxiliary Discharge Arrangement Solar Collector 1 Solar Collector 2 (For East / West Array Installation) Collector Sensor 1 (PT 1000) Collector Sensor 2 (PT 1000) Solar Pumping Station with Controller Solar Pumping Station Cascade Module Solar Expansion Vessel Auxiliary Heat Source (Central Heating Boiler) Flow Meter on a ‘COMMON’ Return (Accessory code 84515064)

Solar Fluid Discharge Vessel (Accessory code 720294601) Thermostatic Blending Valve (Accessory code 720223301)

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Fig. 1

Fig. 2

Page 4

2.0 Hydraulic station specifications

2.1 Technical data

Dimensions (Height/Width/Depth) System Module Pump Station 375/250/190mm Cascade Module Pump Station 375/190/190mm

Flow and return connections (compression fittings) 22mm

Maximum working temperature: 160°C Maximum working pressure: 6 bar Pressure Relief Valve setting: 6 bar Circulating Pump: Baxi Circulating Pump voltage: 230/240 V ~ Power consumption Setting 1: 45W / 45W

Setting 2: 68W / 65W

Setting 3: 90W / 85W Maximum Pump Head: 6 metres Maximum Pump Capacity: 4.5 m3/h / 3.5 m3/h Flow meter scale: 2 to 15 l/min

Fig. 3 System Module

Fig. 4 Cascade Module

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3.0 Differential temperature controller

3.1 Technical data

Housing

Material 100% recyclable ABS

Dimensions L x W x D in mm 175 x 134 x 56 weight ca. 360 g

Ingress protection IP40 according to VDE 0470

Electrical values

Operating voltage 230/240V ~ 50 Hz

Interference grade N according to VDE 0875

Max. conductor cross-section 240V-connections 2.5 mm2 fine-strand/single-wire

Temperature sensor / temperature range PTF6 - 25°C to 200°C

PT1000, 1,000 kΩ at 0°C

Test voltage 4 kV 1 min according to

VDE 0631

Switching voltage 230V / 240V

Capability per one switch output 1A / ca. 230VA for cos j = 0,7-1,0

Total capability of all outputs 2A / ca. 460VA maximum

Fuse protection fine-wire fuse 5 x 20mm, 2A/T

(2 amperes, slow)

Features

Self explanatory, menu driven operation

Adjustable control values

System monitoring

Energy yield, (solar gain) measurement

Suitable for flat plate and evacuated tube type collectors

Reheat thermostat function

Can be used in a number of system configurations

Fig. 5

Page 6

4.0 Ancillary components

4.1 Expansion vessel

1. Membrane expansion tanks for solar primary heating circuit. Manufactured according to the Directive PED 97/23/CE (approved noZ-DDK-MUC-02-396876-04).

2. Butyl membrane suitable for solar primary heating fluid, DIN 4807-3 approval.

Maximum working temperature +110°C. Maximum percentage of glycol 50%. Connection: 3/4” BSP male parallel

3. Expansion vessel supplied with wall mounting bracket and self sealing vessel connection that will allow removal of the vessel for maintenance without losing solar heat transfer fluid.

4.2 Solar heat transfer fluid

1. The system uses a sealed system indirect solar primary circuit which must be filled with the solar heat transfer fluid provided. This is a Pre-mixed (40% glycol / 60% water) Solar thermal transfer fluid, based on1,2 - propylene glycol with corrosion inhibitors. It is Non-toxic, odourless, bio-degradable.

2. DO NOT mix the fluid with other types.

3. The use of chemical resistant gloves and suitable eye protection is required when handling.

4. A full safety data sheet is available on request.

5. The system should be filled when there is no direct radiation from the sun. If direct radiation occurs the collector panels should be shaded by covering them during filling and flushing.

6. Although the solar heat transfer fluid is non corrosive and biodegradable appropriate precautions should be taken when handling.

7. Wash with soap and water if the fluid comes into contact with skin.

8. If fluid gets into eyes, immediately rinse with large quantities of clear running water.

9. The solar heat transfer fluid must be pumped into the system. The pump can be electric or manual but must be capable of producing a pressure of at least 2 bar. The system should be thoroughly flushed to remove any contaminants in the solar primary circuit prior to filling with the heat transfer fluid

10. The fluid is supplied in 20litre container. Weight of container full - 21kg.

11. Systems found to have low glycol concentrations will not be covered by the warranty.

Ø300mm

392mm

/4”

Expansion vessel

Fig. 6

Page 7

5.0 Cylinder specifications

5.1 Unvented

Nominal capacities 210, 250 and 300 litre. Rating Immersion heater(s) 1 x 3 kW (indirect models),

2 x 3kW (direct models) @ 240V~.

Outer casing White plastic coated corrosion proofed steel. Thermal insulation CFC/HCFC-free (ODP zero) flame-

retardant expanded polyurethane (60mm thick). GWP 3.1 (Global Warming Potential).

Cylinder Duplex stainless steel. Pressure testing To 15 bar. Heat unit Titanium

element/s, incorporated into an easily removable heater plate, should replacement be necessary. Rated 3.0kW @ 240V~. Primary coil (for Auxiliary boiler heating) 22mm diameter stainless steel. Coil in coil design for improved performance Solar coil 25mm diameter stainless steel. Coil in coil design and large surface area for improved performance.

Thermostat Direct models: Element thermostat adjustable from 10°C to

70°C. Indirect models: Factory-fitted cylinder thermostat adjustable to 70°C. Solar: Factor y fitted control pocket suitable for insertion of solar controller temperature probe.

Factory fitted safety features: Direct models: Manually re-settable cut-out on heating

element operates at 85°C. Indirect models: High limit thermal cut-out operates at 85°C. Wired in series with two-port motorised valve (supplied) to provide primary over temperature protection when using auxiliary (boiler) coil. All models: Temperature and Pressure Relief Valve, factory set to operate at 10 bar and 90°C. High limit thermal cut-out operating at 85°C at solar coil position. Wired in series with the solar differential temperature controller to provide over temperature protection if overheating occurs from solar collector panels. N.B. This must be used in an unvented installation to comply with the requirements of Building Regulation G3. Anode Not required.

For full technical and performance specification see cylinder installation instructions.

The cylinders are unvented so installation must comply with Building Regulation G3 and / or other local regulatory requirements.

Unvented system - schematic diagram

Fig. 7

Note: Indirect twin coil unit shown.

Page 8

Vented system - schematic diagram

Fig. 8

Note: Direct unit shown. Auxiliary heating by immersion heater.

5.0 Cylinder specifications

5.2 Cistern-fed vented

Nominal capacities 210, 250 and 300 litre. Rating Immersion heater(s) 1 x 3 kW (indirect models),

2 x 3kW (direct models) @ 240V~.

Outer casing White plastic coated corrosion proofed steel. Thermal insulation CFC/HCFC-free (ODP zero) flame-

retardant expanded polyurethane (60mm thick). GWP 3.1 (Global Warming Potential). Water container Duplex 2304 stainless steel. 40 metres (4 bar) maximum working head. Heat unit Titanium element/s, incorporated into an easily removable heater plate, should replacement be necessary. Rated 3.0kW @ 240V~. Primary coil (for auxiliary boiler heating) 22mm diameter stainless steel. Coil in coil design for improved performance. Solar coil 25mm diameter stainless steel. Coil in coil design and large surface area for improved performance.

Thermostat Direct models: Element thermostat adjustable from 10°C to

70°C. Indirect models: Factory-fitted cylinder thermostat from 10°C to 70°C. Solar: Factor y fitted control pocket suitable for insertion of solar controller temperature probe. Safety features Thermostats with manually resettable thermal cut-out. High limit thermal cut-out operating at 85°C at solar coil position. Wired in series with the solar differential temperature controller to provide over temperature protection if overheating occurs from solar collector panels. Anode Not required.

For full technical and performance specification see cylinder installation instructions.

Detailed installation and commissioning instructions are supplied with the cylinders.

NOTE:The system is also compatible with cylinders configured for solar DHW systems. For installation and specification details refer to the manufacturers instructions supplied with the solar cylinder.

Any system installed using an unvented cylinder must comply with Building Regulations G3 and/or other Local Regulations.

Page 9

6.0 Safety Information

6.1 Safety

1. In order to reduce the number of deaths and major accidents attributable to work at height, the Health and Safety Executive has introduced comprehensive regulations and guidance that should be followed by all businesses working at height.

2. We consider in the following paragraphs some of the main features of the regulations and guidance. This is, however, only a limited summary and it is recommended that all businesses planning on undertaking solar water heating installations obtain a copy of the regulations and guidance issued by the Health and Safety Executive and carefully consider the contents.

3. The regulations and guidance state that you are required to carry out a risk assessment for all work conducted at height and to put in place arrangements for :

• Eliminating or minimising risks from work at height.

• Safe systems of work for organising and performing work at height.

• Safe systems for selecting suitable work equipment.

• Safe systems for protecting people from the consequences of work at height.

4. The regulations and guidance highlight a hierarchy for safe

work at height:

• Avoid the risk by not working at height if practicable.

• Prevent falls, where it is not reasonably practicable to avoid work at height; you are required to take suitable and sufficient steps to prevent the risk of a fall including selecting the most suitable work equipment (in accordance with the regulations).

• Mitigate the consequences of a fall; where the risk of a person or object falling still remains, take suitable and sufficient measures to minimise the distance and consequences of any fall.

5. Collective protection measures, such as guard rails on scaffold, should be given priority over personal protection measures, such as safety harnesses.

6. Within the regulations’ framework, you are required to: a) Assess the risk to help you decide how to work safely. b) Follow the hierarchy for safe work at height (i.e. avoid, prevent and mitigate). c) Plan and organise your work properly, taking account of weather conditions and the possibility of emergencies. d) Make sure those working at height are competent. e) Make use of appropriate work equipment. f) Manage the risks from working on or around fragile surfaces and from falling objects. g) Inspect and maintain the work equipment to be used and inspect the place where the work will be carried out (including access and egress).

7. When preparing to install a solar water heating system, it is required that you perform a risk assessment in relation to work at height and plan how you will organise your work, taking into account the site, the weather conditionsand the experience and competence of colleagues or contractors who may be working at height with you.

Page 10

6.0 Safety Information

6.1 Safety (cont)

Risk Assessments

8. The HSE has published a number of very useful free publications that advise how to undertake risk assessments.

9. Two of these that you should obtain are: Five Steps to Risk Assessment. A Guide to Risk Assessment Requirements.

10. The five steps outlined in the HSE leaflet are:

Step 1: Look for the hazards, this will mean looking at the site and identifying significant hazards. These could be features such as a steep roof, a fragile surface where the collectors may be mounted, uneven ground or obstructions where access to the roof might be required.

Step 2: Decide who may be harmed and how, this might mean considering the particular risks that young workers or trainees might face and thinking about the residents of the household or visitors who could be hurt by your activities.

Step 3: Evaluate the risks and decide which precautions should be made, you should consider how likely it is that each hazard will cause harm, decide which precautions you might take and then assess, after you have taken those precautions, whether the remaining risk will be high, medium or low. Where you identify remaining risks, you should consider which fur ther action you could take to control the risks so that harm is unlikely.

Step 4: Record your findings, if you have fewer than five employees you do not need to write anything down, though it is useful to keep a written record of what you have done. If you employ five or more people you must record the significant findings of your assessment. You must also tell your employees about your findings. You need to be able to show that a proper check was made, that you considered who might be affected, that you dealt with all the obvious significant hazards, that the precautions you propose are reasonable and that the remaining risk is low.

Step 5: Review your assessment if necessar y, each solar water heating installation may bring its own challenges and present its own particular hazards. You should therefore be careful not to rely on a “standard” risk assessment for installing a solar water heating system in a house, but review the particular hazards for each new situation. The issue of work equipment must be considered, but at the preparation stage you should consider where scaffold or other access equipment might be positioned and look out for any obvious obstacles to this, such as a conservator y or porch. In addition to the risks associated with work at height, you should also consider the risks associated with lifting and carrying solar collectors, using electric drills and using blow lamps or blow torches for soldering. This is not an exclusive list and so you should consider all aspects of the proposed installation to assess whether there are additional risks that need to be taken into account.

Page 11

7.0 Installation of hydraulic station

7.1 Parts list

Before commencing the installation check all listed components are contained in the following cartons.

Hydraulic Station carton:

1. Hydraulic pump station with insulation incorporating wall mounting bracket.

2. Solar differential temperature controller.

3. Safety group, comprisingPressure relief valve, pressure gauge and fill & drain valve.

4. 22mm compression fitting nut and olive(4 off).

5. Sensor extension cable (13m) (not shown).

Ancillary component carton:

6. Solar expansion vessel complete with mounting bracket and strap assembly.

7. Expansion vessel connecting hose.

8. Expansion vessel self sealing connection.

Fig. 9 (Diagrams not to scale)

Page 12

7.0 Installation of hydraulic station

7.2 Identification of components

1. The main components of the hydraulic station are:

– Two isolating valves (Fig. 10, Item 1 & 2) with integral

thermometers which display the solar primar y flow and return temperatures.

– A safety group (Fig. 10, Item 3, supplied unconnected),

which protects the solar primary circuit. The pressure relief valve and pressure gauge are integrated in the safety group.

– A non-return valve in both feed and return prevents

the possibility of gravity circulation in the solar primary circuit.

– A solar circulation pump (Fig. 10, Item 4).

– A flow meter with fill & drain valve and shut-off valve

(Fig. 10, Item 5).

– An air separator.

2. The heat transfer fluid is circulated by the solar circulation pump integrated in the hydraulic pump station (Fig. 10).

3. The hydraulic station has a solar differential temperature controller (Fig. 10 Item 6) integrated into the front insulation moulding. This is pre-wired to the solar pump.

Fig. 10

Page 13

7.0 Installation of hydraulic station

7.3

See Fig. 11

1 Cold Supply for Domestic Hot Water 2 Domestic Hot Water Outlet 3 Auxiliary Discharge Arrangement 4 Solar Collector 1 5 Solar Collector 2 (For East / West Array Installation) 6 Collector Sensor 1 (PT 1000) 7 Collector Sensor 2 (PT 1000) 8 Solar Pumping Station with Controller 9 Solar Pumping Station Cascade Module 10 Solar Expansion Vessel 11 Auxiliary Heat Source (Central Heating Boiler) 12 Flow Meter on a ‘COMMON’ Return

(Accessory code 84515064)

13 Solar Fluid Discharge Vessel

(Accessory code 720294601)

14 Thermostatic Blending Valve

(Accessory code 720223301)

7.4 Pipework installation - general

1. In Solar Heating Systems, the collectors, the hydraulic station

and solar cylinder (Fig. 11, Item 1) must be connected with brazed or silver soldered copper pipes, compression fittings or the multifit accessory flexible steel tube and insulation. (See

brochure for details) N.B. Plastic pipes MUST NOT be used.

2. Connections supplied are suitable for pipe diameters of

22mm. However for short pipe runs (up to 10m flow and return) the use of 15mm diameter pipe is acceptable.

3. All connections and joints must be resistant to temperatures

of up to 150°C and resistant to glycol.

4. If any pipe sealants are used these should be resistant to

glycol and be able to withstand temperatures of up to 150°C.

5. The difference in height between the highest point in the

pipework (collector) and the level of the hydraulic pump station determines the static head for the system. The static head is 0.1 bar times this height in metres. This static head is used when setting the expansion vessel precharge pressure and the system pressure.

6. If the static head is greater than 1.5 bar (15m) then a larger

expansion vessel may be required for larger collector arrays.

7. If the pipe runs between the solar collector and pump

station are short (<6m) then a protection vessel (Accessar y No. 5131963) should be installed between the pump station and expansion vessel.

8. Earthing pipework

All solar primary pipework between the solar collectors, hydraulic station and solar cylinder should be earth bonded in accordance with current IEE wiring regulations.;

Fig. 11

Static Height (m)

Page 14

7.0 Installation of hydraulic station

7.4 Pipework installation - general (cont)

9. Venting the pipework The hydraulic station the component includes an air collector/separator and bleed point so an automatic air vent is not necessary. Any section of solar pipework that falls and rises again should be fitted with an additional air vent valve to relieve any trapped air which may cause air locking in the system. The automatic air vent and isolating valve used must be compatible with solar primary systems, i.e. be resistant to glycol and temperatures up to 180ºC.

10. Insulating the pipework External pipework should be insulated with high temperature resistant materials and be protected against UV degradation. The insulation must be peck-proof and rodent-proof. Internal pipework, especially through unheated spaces such as a loft space, should also be insulated with high temperature resistant materials. Mark the outside of any insulation to identify the flow and return pipes. The collectors are supplied with 2x2m pre insulated flexible stainless steel tubes. Additional lengths (30m) of stainless steel flexible tubes and high temperature insulation can be supplied.

Fig. 12

See Section 7.3 for Key

Page 15

7.0 Installation of hydraulic station

7.5 Installing the hydraulic station - positioning

1. It is usual to install the hydraulic station and solar differential

temperature controller near to the solar cylinder. However this does not have to be the case, the hydraulic station can be installed anywhere convenient on the solar primary pipework although adequate access will be necessary for commissioning and maintenance (See also comments regarding system static

head given in Section 7.4).

2. The solar differential controller should also be accessible for

system operational monitoring. If not in close proximity to the solar cylinder it will be necessary to extend the solar cylinder temperature sensor cable, refer to section 9.6 for details of how to do this.

3.It is recommended that the upper mounting bracket

of the hydraulic station is positioned approx. 1600 to 1700mm above the floor level for ease of access and operation of the controls, see Fig. 13.

4. When choosing the site for the hydraulic station provision of a

discharge pipe from the safety group and the location of the solar expansion vessel must be considered.

7.6 Installing the wall brackets and hydraulic station

1. Remove the front insulation moulding (Fig 14. Item 1) by

pulling forward whilst holding the solar differential controller moulding (Fig 14. Item 2) in place, carefully remove the solar differential controller mounting by pulling forward and disconnect the pump cable connector (Fig 14. Item 3).

2. Place the hydraulic assembly on the wall at the desired

location and mark the fixing positions through the holes in the mounting brackets.

3. Remove the hydraulic assembly from the mounting brackets

(Fig 14. Item 4) and remove rear insulation moulding (Fig 14. Item 5).

4. Drill and plug the mounting positions and screw the mounting

brackets into position.

5. Push the rear insulation moulding over the wall brackets and

refit the hydraulic assembly (Fig 14. Item 6) to the mounting clips on the wall brackets.

Fig. 13

Fig. 14

Page 16

7.0 Installation of hydraulic station

7.7 Installing the safety group

1. Connect the safety group (Fig 15 Item 1) to the connection on the hydraulic station return isolating valve assembly (Fig 15 Item 3). Ensure that the pre-fitted gasket is securely in place on the safety group prior to connection.

7.8 Connecting the solar expansion vessel

1. Mount the solar expansion vessel (Fig 16 Item 1) adjacent to the hydraulic station (Fig 16 Item 2) so that the vessel can be connected to the vessel connection of the safety group (Fig 16 Item 3) using the flexible pipe (Fig 16 Item 4) supplied. (Note: Solar expansion vessel, mounting bracket, self sealing connection and flexible pipe are supplied in the Ancillary Components kit).

2. The vessel must be mounted as shown (connection to top) and securely supported using the wall bracket supplied. The self sealing vessel connection should be screwed onto the vessel connection before connecting the flexible pipe (Fig. 16 Item 5).

3. DO NOT replace the solar expansion vessel with either a potable water expansion vessel or boiler sealed system vessel.

4. The charge pressure of the solar expansion vessel must be adjusted (when the fluid circuit is empty or de-pressurised) to a pressure equal to the static head + 0.4 bar, or a minimum of 1.2 bar. (NOTE: the static head is the height difference between the highest point in the pipework (collector) and the hydraulic station in metres x 0.1 bar. The charge pressure should not normally exceed 1.9 bar - see also Section 7.4.

7.9 Connecting pipework

1. Connect the flow and return pipes to the pump station via compression fittings (Fig 17 Item 1). Fittings are for 22mm o/dia pipe. Support the hydraulic assembly when tightening connections.

2. Installing a drain valve It is recommended to install a device for draining the solar heating system (tee piece with drain valve, Fig. 18) into the flow and return at the lowest point in the solar heating system. The drain and its rubber seal must be suitable for solar applications.

3. Connecting the solar cylinder For detailed installation instructions refer to the installation instructions supplied with the solar cylinder.

Flow from panel

Return

panel

Flow

cylinder

Return

from

cylinder

To a suitable container (e.g. Solar fluid discharge vessel Accessory No. 720294601)

Flow to cylinder

Return from cylinder

Return to hydraulic station

Fig. 15

Fig. 17

Fig. 18

Fig. 16

Page 17

8.0 Commissioning of system

8.1 Air Test

1. An air test may be used on the pipework to detect any gross

leakage prior to flushing and filling with solar heat transfer fluid. Pressurise the system to a maximum of 1 bar to check for leaks.

2. Ensure that the solar expansion vessel pre-charge pressure

has been set prior to flushing and filling.

8.2 Flushing and Filling the pipework

1. Before the system is commissioned the pipework must be

flushed to remove any contaminants. This must be done using

the solar heat transfer fluid as it will be impossible to fully drain all parts of the system.

2. Connect the flushing pipes to the fill & drain valve on the

safety group (Fig. 19 Item 1) and to the fill & drain valve on the flow meter (Fig. 19 Item 2).

3. Open the fill & drain valves.

4. Turn the slot of the adjusting screw (Fig. 19 Item 3) in the

return so the slot is vertical to open the non-return valve.

5. Turn the left hand isolating valve with integral thermometer in

the flow (Fig. 19 Item 4) in the direction indicated by the arrow (to a 45° position) to open the non-return valve.

6. Ensure that the right hand isolating valve with integral

thermometer in the return (Fig. 19 Item 5) is open indicated by the dot on the thermometer bezel being at the top.

7. Turn the slot of the flow meter adjusting screw (Fig. 19 Item

6) in the return vertically to open the flow limiter (Fig. 19 Item

7).

8. Flush the solar primary pump by pumping the fluid into the

system via the fill and drain valve on the safety group (Fig. 19 Item 1).

9. Close right hand isolating valve (dot on thermometer bezel at

9 o’clock position). Flush solar primary pipework and collector via the fill and drain valve on the safety group. If reusing flushed

fluid ensure this is filtered before re-introducing into the system. (see Fig. 20). Use a suitable container of a large enough

volume to collect the fluid.

10. When satisfied that all pipework and component parts have

been thoroughly flushed, the system can be filled.

Fig. 19

Fig. 20

Fig. 21

Solar fluid

Filling pump

Filter

45°

Read at top of float

Page 18

8.3 Flushing and Filling the pipework (cont)

11. Pour an amount of the solar heat transfer fluid into the filling pump.

12. Close the fill and drain valve - safety group (Fig. 19 Item 1) and the fill and drain valve - flow meter (Fig. 19 Item 2) and pressurise the pump slightly prior to filling the system. If an electric pump is being used follow the instructions with the pump.

13. Fully open the fill and drain valve on the safety group (Fig 19, item 1) and pump fluid into the system. Whilst pumping, open the flow meter drain valve (Fig 19, item 2) slightly to allow the air to vent out of the system.

14. When the pump is down to approximately 1 litre isolate the fill and drain valves. Vent the filling pump and refill with solar heat transfer fluid.

15. Re-pressurise the filling pump and repeat steps 3 and 4 above until fluid is seen discharging from the drain valve on the flow meter. (Fig 19, item 2). Close the drain valve.

16. Continue filling at the fill and drain valve on the safety group (Fig 19, item 1) until the system pressure reaches 2 bar.

17. At this point the circulation pump should be vented. If the system pressure drops, repressurise using the procedure above.

18. After venting the pump and checking that the system pressure is 2 bar, close the fill and drain valve on the safety group (Fig. 19 Item 1), and check the system for leaks.

19. Turn the left hand isolating valve (Fig 19, item 4) back 45° clockwise until the dot on the bezel is back at 12 o’clock.

20. Turn the right hand isolating valve (Fig. 19 Item 5) back 90° clockwise until the dot on the bezel is back at 12:00 O’clock.

21. Turn the slot of the adjusting screw (Fig. 19 Item 3) back to the horizontal position.

8.0 Commissioning of system

Page 19

Pump

pre-wired

(mounted on

hydraulic station)

230V/240V~

Mains supply

L N E

Cylinder

sensor

Solar

differential

controller

Hydraulic Station

Solar panel

sensor

Terminal block

for extending

collector sensor

Double pole

isolating switch

Solar Coil over-temp

cut-out

9.0 Installation of solar controller

9.1 Appliance installation

1. Always disconnect from the mains before opening the controller cover. The solar differential temperature controller

is designed to be mounted on the front of the hydraulic station. Alternatively it can be removed from the insulation and be wall mounted (see panel below). In the case of wall mounting the pump cable may need to be lengthened.

Alternative mounting option

In the case of wall installation proceed in the following way: Drill installation holes according to the dimensions shown below. Screw in two upper screws up to 6 mm distance. Open the appliance as described in section 10.2 and hang it onto two screws. Now two lower screws can be mounted. Tighten all screws. Do not overtighten to avoid damage to the controller backplate.

9.2 Opening the controller

1. Always disconnect from the mains before opening the controller cover.

2. No tools are required to open the controller. The front of the controller is secured by two latches which engage with the controller backplate.

3. It can be opened by gently pulling the lower side edges outwards and then hinging the front upwards.

126mm

118mm

84mm

Fig. 22

The collector panel temperature sensor should be installed in the sensor pocket at the collector array flow connector as part of the first fix process. Ensure that the cable from this sensor can be identified for connection to the pump station wiring centre. Use the 13m extension cable supplied if required.

Page 20

F U S E

Fuse rating T 2A L 250V

PEPE

NNNN

M1 M2 M3 M4 M5 M6 M7

T2 T6T5 T7

T3 T4

Mains 230/240V connections

Low Voltage (SELV) connections

240 Volts

Terminal

Reference

Description

L 240V Supply Live

N 240V Supply Neutral

A1 Switched Output to Solar Pump

N Solar Pump Neutral

A2 Switched Output - Live 2 (For East West Array or Dual Tanks)

N Switched Output 2 Neutral

A3 Switched Output - Live 3 (For Auxiliary Heat Control)

N Switched Output 3 Neutral

PE Earth Connection

T1 & M1 Temperature Sensor Collector 1 (Tc1)

T2 & M2 Temperature Sensor Storage Tank 1 (Ts1)

T3 & M3 Temperature Sensor Collector 2/Storage Tank 2 (Tc2 / Ts2)

T4 & M4 Temperature Sensor Collector Return (Tret)

T5 & M5 Temperature Sensor for 2nd temperature differential controller (Tth)

T6 & M6 Frost Protection or 2nd temperature differential controller

Flow Meter (Optional)

T7 & M7

9.0 Installation of solar controller

9.3 Electrical connection overview

1. Always disconnect from the mains before opening the controller cover. The electrical installation must conform to all

current Wiring Regulations and be carried out by a competent electrician.

2. The connection of all electrical cables is to the terminal block located on the backplate of the controller. The terminals on the right side of the terminal block are for extra low voltage connections (temperature sensors and flow transmitters). The terminals on the left side of the terminal block are for 230/240 V~ connections.

General connection guidelines.

3. In the case of all connecting wires the outer sheath should be stripped back to 80mm. The individual conductor sleeving should be stripped approx. 10mm.

4. Cables are inser ted in the controller through knockouts provided in the controller backplate.

5. Flexible cables must be secured against straining by suitable strain relief bushes or devices.

6. The controller must be earthed.

9.4 230/240V~ connections

1. For 230V connections you must follow the following points:

2. The mains supply to the controller should be via a suitable double pole isolating switch with a contact separation of at least 3mm in both poles. Additionally the controller should be wired via the solar coil over temperature cutout such that power is interrupted to the controller and hydraulic station in the event of the cylinder overheating (see Fig. 24).

3. Controllers are intended for the operation in 230/240V~ /50Hz mains. Any motorised valves connected must be suitable for this voltage.

4. All earth wires must be connected to terminals marked with PE. Any bare wire earth conductors must be sleeved with green/yellow sleeving.

5. The neutral terminals (N) are electrically connected and are not switched.

6. All switch outputs (A1, A2 and A3) are 230/240V~ closers. If potential-free contacts are needed, appropriate accessories are required.

Fig. 23

230V/240V~

Mains supply

L N E

Solar

differential

controller

Hydraulic Station

Double pole

isolating switch

Solar coil

over-temp

cut-out

Fig. 24

Page 21

9.0 Installation of solar controller

9.5 Solar Gain measurement

1. For solar gain (energy productivity) measurement in System type ‘0’, it is necessary to fit the collector return sensor as shown in the diagram in Fig. 25. and input the correct flow value.

2. For System types 2 and 4, the collector return sensor must be securely attached to the common return pipework using the securing tiles supplied and then covered by insulation. Use cable ties (not supplied) to ensure good attachment and accurate readings.

3. The solar gain of the system is calculated on the basis of the temperature difference between the collector flow and return and the solar primary circulation flow rate.

4. The function is factory set-up as ‘on’ in the Solar Differential Temperature Controller.

5. For System Type 2 the additional pump (P2) can be ordered as an accessory, Par t No. 7202943 together with appropriate sensor for cylinder 84515063.

6. For System type 4 use the East/West kit accessory as required (See Sales Brochure).

NOTE: The solar gain flowmeter must be connected to sensor terminals marked T7 where fitted (see Fig. 23).

Collector

Type 0:

1 collector, 1 storage tank

Storage tank

Collector

Type 2:

1 collector, 2 storage tanks

with 2 pumps

Storage tank1 Storage tank2

Key Description

Tc1 Temperature Sensor - Collector 1

Tc2 Temperature Sensor - Collector 2

Tth Temperature Sensor - Thermostat

Ts1 Temperature Sensor - Storage 1

Ts2 Temperature Sensor - Storage 2

Tret Temperature Sensor - Collector Return

P1 Circulation Pump 1

P2 Circulation Pump 2

FM Flow Meter

Tfr * Temperature Sensor - Frost Protection

not shown

System

Type

System Description T1 T2 T3 T4 T5 T6 T7

0 1 collector array, 1 storage cylinder Tc1 Ts1

Tret Tth Tfr FM

2 1 collector array, 2 storage cylinders Tc1 Ts1 Ts2 Tret Tth Tfr FM

4 2 collector arrays, 1 storage cylinder Tc1 Ts1 Tc2 Tret Tth Tfr FM

Collector 1

Type 4:

2 collectors, 1 storage tank

with 2 pumps

Storage tank1

System type Output terminal designation (see Fig. 23)

Type Description A1 A2 A3

0 1 collector array, 1 storage cylinder P1 - Cooling or thermostat or diff. controller

2 1 collector array, 2 storage cylinder (pump-pump) P1 P2 Cooling or thermostat or diff. controller

4 2 collector array, 1 storage cylinder (pump-pump) P1 P2 Cooling or thermostat or diff. controller

Fig. 25

Tc1

Tc2

Tc1

Tth

Ts1

Tr et

Ts2

Ts1

Tth

Tret

Page 22

9.0 Installation of solar controller

9.6 Connection of temperature sensors

1. The controller uses precise platinum temperature sensors type PT1000. The controller is supplied with 3 sensors ready wired. The sensor with black silicone sheathing (supplied with the first fix kit) must be used for the solar panel sensor.

2. Installation / cabling of temperature sensors: a) Mount the sensors in the pockets provided in the collector and storage tank. When installing into the collector panel sensor pocket the sensor should be secured by sealing with UV resistant High Temperature Silicone sealant.

b) The wires of the temperature sensors can be lengthened. Up to 15m long you need a 2 x 0,5mm2 cross-section, up to 50m 2 x 0,75mm2. In the case of long connections (collector) shielded extension lead must be used. DO NOT run sensor leads adjacent to mains carrying voltage conductors (at least 50mm separation is recommended).

c)Temperature sensors are supplied connected to the appropriate terminals, refer to Fig 26. The sensors are polarity free.

d) Sensors MUST NOT be connected to the 230/240V~ terminals.

9.7 Control of Auxiliary heat input

1. When using the reheat function the operation of the auxiliary heat input device can be controlled via output A3 from the controller (see fig. 23(c)).

2. The reheat sensor cable is connected to terminals T5 of the solar controller (see page 20) and the sensor element be inserted into the controls pocket at the auxiliar y heater level.

3. N.B. The maximum switching current of the controller is 2A so if switching an electrical immersion heater this MUST be done via a relay (see Fig. 26 Block Wiring Scheme C) order accessory code No. 5122765.

4. If using a boiler for auxiliary input, the output from the reheat function should be integrated into the boiler control circuit.

3A Fused Supply

710 3

123E

2345678910Terminal Box (Not supplied)

23 4235 12376

NE PLLNESLLNE

DHW ON CH ON

Boiler Terminal Strip Programmer

Cylinder Auxiliary Controls

692

12N

Room Stat

Solar

Controller

Boiler Immersion

12E

Solar O/Temp Cutout

322

PE L N

Solar Differential Controller

11A112

T1 T2A2 N T4 T7

423

LNE

CH Pump

A1 N PE

11 12 E

Solar Pump

A1 N PE

11 12 E

Solar Pump 2

3 2 10 1

G/Y BL BR GR

DHW 2 Port Valve

3291

G/Y BL BR GR

CH 2 Port Valve

See Fig. 23

3A Fused Supply

710 3

123E

2345678910Terminal Box (Not supplied)

23 4235 1216

NE PLNESL LN12

Boiler Terminal Strip Programmable Room Stat

Cylinder Auxiliary Controls

12E

Solar O/Temp Cutout

382

PE L N

Solar Differential Controller

11A112 7 2

A3 N T1 T2A2 N

A2 N

T4 T5 T7

423

LNE

CH Pump

A1 N PE

11 12 E

Solar Pump

A1 N PE

11 12 E

Solar Pump 2

3 2 10 1

G/Y BL BR GR

DHW 2 Port Valve

3261

G/Y BL BR GR

CH 2 Port Valve

See Fig. 23

3 Amp Fused Supply

12345678910Terminal Box (Not supplied)

13 Amp Fused Supply

456

183

12E

Solar O/Temp Cutout

756

LNE

Immersion Heater

A3 N 4

1 5 CoM

Auxiliary Immersion Heater Relay

382

PE L N

Solar Differential Controller

11A112

A3 N T1 T2 T4 T5 T7

A1 N PE

11 12 E

Solar Pump

See Fig. 23Relay

A1 N PE

11 12 E

Solar Pump 2

Fig. 26

Block Wiring Schemes

A. In conjunction with auxiliary heating by boiler - no reheat control

by solar controller.

B. In conjunction with auxiliary heating by boiler - reheat control

via solar controller.

Note: For Boilers without Pump over run CH Pump Live Supply to 5

C. Solar Cylinder with auxiliary heating by immersion heater.

Page 23

3A Fused Supply

85 3

123E

2345678910Terminal Box (Not supplied)

23 1423 12387

NE LPLNE

SL L N E

DHW ON DHW OFF

Boiler Terminal Strip Programmer

Cylinder Auxiliary Controls

692

12N

Room Stat

Solar

Controller

12E

Solar O/Temp Cutout

PE L N

Solar Differential Controller

11A112

T1 T2 T4 T7

423

LNE

CH Pump

A1 N PE

11 12 E

Solar Pump

3 2 10 NOT USED

G/Y BL BR GR

2 Port Valve

3297

G/Y BL WH GR

3 Port Mid Position Valve

CH ON

See Fig. 23

3A Fused Supply

85 3

123E

2345678910Terminal Box (Not supplied)

23 1423 1219

NE LPLNE

SL L N 1 2

Boiler Terminal Strip Programmable Room Stat

Cylinder Auxiliary Controls

163

12E

Solar O/Temp Cutout

362

PE L N

Solar Differential Controller

11A112 8 2

NA3N

T1 T2 T4 T5 T7

423

LNE

CH Pump

A1 N PE

11 12 E

Solar Pump

3 2 5 NOT USED

G/Y BL BR GR

DHW 2 Port Valve

3297

G/Y BL WH GR

3 Port Mid Position Valve

See Fig. 23

A1 N PE

11 12 E

Solar Pump 2

A2 N

A1 N PE

11 12 E

Solar Pump 2

D. Auxiliary heating by boiler with 3 port mid position valve system

- no reheat control by solar controller.

E. Auxiliary heating by boiler with 3 port mid position valve system

- reheat control by solar controller.

9.0 Installation of solar controller

9.8

1. Key to abbreviations:

L-Live N - Neutral E-Earth PL - Pump Live SL - Switched Live G/Y - Green and Yellow BL - Blue BR - Brown GR - Grey OR - Orange WH - White

2. The wiring schemes assume the use of an unvented Solar DHW cylinders.

3. These diagrams are presented for guidance only, terminal numbers may differ between different manufacturers equipment.

4. Baxi accept no liability for any loss or damage arising from any errors or omissions that may be inadvertently contained within these diagrams.

5. The various ancillary equipment manufacturers should be consulted to confirm the correct operation of their products within the system.

6. The Warranty only applies to equipment and controls supplied with the system.

Fig. 26

Page 24

10.0 Commissioning of hydraulic station

10.1 Ensure the solar primary system is free from air

1. Switch on the power supply to the solar differential temperature controller.

2. Manually switch the circulation pump ON and OFF via the solar differential temperature controller (see section 11.5) to pump fluid around the solar primary system.

3. Turn the pump off and open the airbleed screw on the air separator (Fig. 27 Item 1). Bleed any air from the air separator. If the system pressure drops top up by opening the fill and drain valve (Fig. 27 Item 2) on the safety group and pumping in more solar fluid to restore the pressure. This must be repeated until the pressure remains stable.

10.2 Setting the system pressure

1. During commissioning, the system pressure should be 0.7 bar above the static pressure (1 metre height differential equals 0.1 bar). However, it must be at least 1.5 bar and no higher than 2.2 bar.

2. Determine the system pressure when the system is cold (20°C). This should be recorded on the Commissioning Record Sheet.

3. If the pressure is too low you should pump additional heat transfer fluid into the system; the fill & drain valve on the safety group (Fig. 27 Item 2) needs to be opened for this purpose. When system pressure is correctly set, ensure the fill and drain valve is closed and remove filling hose from safety group.

Fig. 27

Page 25

11.0 Commissioning of solar controller

Main Menu

Display Screen

Control Button

Scroll upwards

Scroll downwards or select required main menu

Scroll left or exit to main menu

Scroll right or select to edit function

On completion of commissioning the Solar Controller, note all the required information in the Solar Commissioning Record Sheet at the end of Section 12.

11.1 Main Menu

To make the operation of the controller clear, operating and display

functions are divided into 4 main menus.

Info Indication of current measured values.

Indication of system condition. Indication of error messages. Indication of operating hours and energy productivity (if installed).

Programming Changes to programmable values

(parameters).

Manual operation Switching on and off connected pumps

and auxiliary devices.

WARNING - During manual operation there is no automatic regulation of the system. Temperature control is isolated. System temperature could be extremely high.

Basic adjustment Information about basic adjustment for

system function. To carry out any changes to this menu it must be selected within the first minute after switching the appliance on. IMPORTANT: Adjustment and changes in this menu must only be carried out by a competent installer or service engineer.

Each active menu is shown in the upper line of the display by its corresponding icon.

11.2 Control Button

When in the Main Menu the control button functions are as follows:

Item 2 - Scroll upwards- no function in this menu Item 3 - Scroll left - moves left through the main menu

options

Item 4 - Scroll down - selects the menu option currently

flashing and gives access to the submenu

Item 5 - Scroll right - moves right through the main menu

options

Once the sub-menu has been accessed, the flashing symbol becomes static and the button functions are then as follows:

Item 2 - Scroll upwards- moves up through the available

functions of the sub-menu Item 3 - Scroll left - return to main menu Item 4 - Scroll down - moves down through the available

functions of the sub-menu Item 5 - Scroll right - select to edit the function displayed.

The selected function will flash if it is

available for editing. Use 2 to increase the

required value and 4 to reduce it.

Use 5 to OK.

Sub-Menu

Diagram of all possible symbols

Example Screen - Programming Menu

Fig. 28

Page 26

11.0 Commissioning of solar controller

11.3 Menu “Info”

In this menu mode all measured values and operating states are shown.

If the values are marked as “reset possible”, they may be reset in the following way:

Choose the value with buttons and

Reset value by means of the button

Message “OK?” confirm with = no or = yes

Press or to scroll

up or down to the required sub function.

The icon will flash, press to

select the function. Reset by pressing

or for

increase/decrease values. Press

and appears,

press to confirm and

disappears.

ok?

75 °C

Indication of current collector(s) temperature.

52 °C

Indication of current temperature storage tank(s).

Temperature difference controller for heat consumer *

Only displayed if temperature sensor fitted (not supplied as standard).

Displays current return temperature

60°C

Heating, Cooling, Temperature difference controller T1…T6 *

Only displayed when activated

Yes

Indication of minimum temperature storage tank(s). Resettable to current temperature.

Antifreeze sensor Indication of universal temperature measuring points (T6). * Only displayed if temperature sensor fitted (not supplied as standard).

Yes

Operating hours for charging storage tank(s). Resettable to 0 h.

Energy productivity for storage tank(s). Resettable to 0 h.

Yes

Reset

possible?

Indication of minimum collector(s) temperature. Resettable to current temperature.

Indication of maximum collector(s) temperature. Resettable to current temperature.

25 °C

Meaning

Indication of maximum temperature storage tank(s). Resettable to current temperature.

max

65°C

min

40°C

927 kWh

min

12°C

Indication

e.g.

max

105°C

1234 h

60°C

35°C

Fig. 29

Page 27

11.0 Commissioning of solar controller

11.4 Menu “Programming”

1.All adjustable parameters can be checked in this menu and, if necessary, changed. The default factory setting will usually give efficient and problem free operation. However Baxi recommend the following parameters marked * must be left at the default settings. Any change to the Baxi recommended settings will invalidate the warranty.

2. For more information or guidance please contact the Technical Enquiries.

Press or to scroll

up or down to the required sub function.

The icon will flash, press to

select the function. Reset by pressing

or for

increase/decrease values. Press

and appears,

press to confirm and

disappears.

ok?

13:21

Time

0:00 - 23:59 12:00

dT max

Min 100

Storage tank 1 or 2 Maximum permissible temperature

40 °C

Meaning

10 K

3 - 40K

Temperature difference controller. Hysteresis dT max

Storage tank 1 or 2: switch-off differential (dToff)

2 - 35K

Adjustment of pump rotational speed. 100% = rotational speed regulation set to 'off'

1 - 30K

Switch-on temperature for Heating/Cooling function

Hysteresis for Heating/Cooling function

10K

30% - 100%

Value range

20 - 90°C

Typical

adjustment

3 - 40K 7K

15 - 65°C (15 - 95°C Tank 2)

Indication

dT min

3 K

dT max

7 K

max

65 °C

65°C* MAX

Storage tank 1 or 2: switch-on differential (dTon)

100%

40°C

2 - 35K 3K

min 00:00 1(2,3)

Timeframe 1(2,3): Start

0:00 - 23:59 00:00

dT min

Temperature difference controller. Hysteresis dT min

Timeframe 1(2,3): Start for the collector function

0:00 - 23:59 06:00

max 23:59 1(2,3)

Timeframe 1(2,3): Stop

0:00 - 23:59

20:00

max

20:00

Timeframe 1(2,3): Stop for the collector function

0:00 - 23:59

23:59

min

06:00

Meaning Value range

Typical

adjustment

Indication

Fig. 30

Page 28

11.0 Commissioning of solar controller

11.5 Menu “Manual operation”

1. For commissioning, service and test purposes the solar primary system can be manually operated. For this purpose the switch outputs may be disconnected or connected.

WARNING - During manual operation there is no automatic regulation of the system. Temperature control is isolated. System temperature could be extremely high.

2. To avoid inadmissible operating states this mode of operation changes into “Indication” after approximately 8 hours and the automatic regulation is activated again.

NOTE: Exiting this menu will automatically return the system to normal operation.

Press or to scroll

up or down to the required sub function.

The icon will flash, press to

select the function. Reset by pressing

or for

increase/decrease values. Press

and appears,

press to confirm and

disappears.

ok?

Switching on/off switch output A1 (solar circulation pump) by hand.

0 = off 1 = on

Indication Meaning Value range

Switching on/off switch output A3 (cooling,

thermostat or 2

temperature difference

controller function) by hand.

0 = off 1 = on

Switching on/off switch output A2 (pump2/valve1) by hand.

0 = off 1 = on

Fig. 31

Page 29

11.0 Commissioning of solar controller

0 Anro 6 Tyfocor L5.5 - supplied 1 IIexan E, Glythermin 7 Dowcal 10 2 Antifrogen L 8 Dowcal 20 3 Antifrogen N 9 Dowcal N 4 IIexan E 10 Tyfocor LS 5 IIexan P 11 Fernox S1

Press or to scroll

up or down to the required sub function.

The icon will flash, press to

select the function. Reset by pressing

or for

increase/decrease values. Press

and appears,

press to confirm and

disappears.

ok?

11.6 Menu “Basic adjustment”

1. Adjustment and changes in this menu must be carried out only by a competent installer or service engineer.

Incorrect adjustments may adversely affect the function of controller and solar primary system.

2. To avoid accidental changes in menu “Basic adjustment”, it is not editable in normal functioning but has only a display function. To be able to carry out any changes, this menu must be chosen within the first minute after switching on the appliance. The basic adjustment menu is ‘blocked’

automatically one minute after switching on if the menu is not accessed.

For correct operation of the system, Baxi recommend the settings shown above.

Indication

Collector protection function

110..150°C 120°C

Recooling storage tank temperature

30..90°C 40°C

Energy yield measurement 'Off'

Energy yield measurement with flow meter

Energy yield measurement without flow meter

Energy yield measurement sets glycol type

0…11

0 ... 100%

5% - steps

No value shown, when item 5 is set to 0

-----

Adjustment value when item 5 is set to 1

0.5 – 25Litres per impulse

Adjustment value when item 5 is set to 2

0.1 – 75Litres

per minute

First priority storage tank selection

1 - 2 1

12 -- 6

Anti-freeze function. Reference sensor selection

1 - 6 6

30 - 480

11 -- 0

Antifreeze function

0 = off 1 = on

10 -- 1

100

9 -- 240

Multiple tank storage systems. Controller response time in seconds

240

8… 10

6 -- 11

7 -- 100

Energy yield measurement glycol mixture

5 -- 2

3 -- 40 °C

4 -- 0

Tube collector function - time-controlled

0 = off 1 = on

0 -- 0

1 -- 120 °C

2 -- 0

Recooling function (only if the collector protection is on)

Collector protection function

0 = off 1 = on

Description Value range

Factory set - up

Line / value

Note: This Solar Controller has the ability to calculate the energy yield without the use of a ow meter. The Flow Meter is now available as an accessory - Code no. 5122979.

Anti-freeze function start temperature

-20 °C ... +7 °C

0 = off

1 = cooling

2 = thermostat

1 - 6 5

16 -- 0

System diagram

0 - 4 0

15 -- 5

Independent controller reference sensor

13 -- 3°C

14 -- 2

Independent controller function

Fig. 32

Page 30

11.0 Commissioning of solar controller

Graphic symbol Description Indication in operation

Measuring points assignment

Temperature measuring point collector array 1

Temperature measuring point collector array 2

Temperature measuring point storage tank 1 solar

(storage tank 1 charging)

Temperature measuring point storage tank solar

(storage tank 2 charging)

Temperature measuring point collector - return

Temperature measuring point storage tank

(auxiliary heating)

Antifreezing sensor or universal temperatures

measuring point (T6) (no sensor monitoring)

Auxiliary heating temperature

Operating hours, energy productivity measurement

Status indication

Solar circulation pump Symbol revolves when solar circulation pump is on

Switch output 1 is active Appears when switch output 1 is active (on)

Switch output 2 is active Appears when switch output 2 is active (on)

Switch output 3 is active Appears when switch output 3 is active (on)

Reference to system fault Display flashes when a fault occurs in the system

Safety query for value changes which are to be stored

Input value can be either

rejected or accepted

ok?

11.7 Overview of display and operating elements

Fig. 33

Page 31

Graphic symbol Description Indication in operation

Indicator values

dT Temperature difference

min Min value Appears when minimum values are indicated

max Max value Appears when maximum values are indicated

min Time period 1 start Appears when the differential controller is active

0:00 (timeframe 1-3) or tube collector is active (timeframe 4)

Max Time period 1 stop Appears when the differential controller is active

23:59 (timeframe 1-3) or tube collector is active (timeframe 4)

5 x 7 segment display. Display of all values, display flashes when

Presentation of figures 00000 to 99999 a value is changed

ºC Temperature in Celsius

K Temperature difference in Kelvin

h Operating hours

kWh Productivity indication in kWh

11.0 Commissioning of solar controller

11.8 Overview of display and operating elements

(cont)

Fig. 34

Page 32

11.0 Commissioning of solar controller

“Programming”

Maximum temperature

dT max (dT on)

Switch-on temperature difference

dT min (dT off)

Switch-off temperature difference

Corresponding values in menu

11.9 Controller functions

1. The differential temperature controller contains many functions to regulate and monitor the solar primary system. Including

- controller functions for heating the solar cylinder

- functions for system protection and system monitoring

- additional functions (other accessories may be required to achieve these functions).

11.10 General controller functions

1. The controller collects the temperatures from various measuring points and determines the right time to charge the storage tank on account of programmed (additional) functions and controller parameters.

11.11 Cylinder heating by solar primary system

1. Switching action can be adjusted through dTmax (dTon) and dTmin (dToff). The solar cylinder is heated by operating the solar pump on output A1 up to the set maximum storage temperature (65°C). Pump operation starts when the collector temperature exceeds the cylinder temperature by more than dTon and continues while the collector temperature is above cylinder temperature + dToff, as set in the programming menu. dTon cannot be set lower than dToff + 1K.

11.12 Systems with two storage cylinders

1. For systems with more than one storage cylinder (System Type 2) the cylinder heating can be optimised depending on the energy supply. Usually the cylinder with lower priority will have a lower temperature than that with the higher priority. Re-directing the energy to the lower priority cylinder will lower the temperature in the collector array.

2. To check the collector temperature the heating of the lower priority cylinder will be interrupted for a short while at fixed intervals. If the heating requirement for the higher priority cylinder is fulfilled then the lower priority cylinder will be heated.

3. The higher priority cylinder can be selected in the “Basic Adjustment” menu point no. 10.

Page 33

“Basic adjustment” “Programming”

14 -- 1 Start temperature max ºC

15 -- 5 Hysteresis dT in K

Time period (1…3) Start: min time

Time period (1…3) Stop: max time

Corresponding values in menu

“Basic adjustment” “Programming”

14 -- 2 Start temperature max ºC

15 -- 5 Hysteresis dT in K

Time period (1…3) Start: min time

Time period (1…3) Stop: max time

Corresponding values in menu

“Basic adjustment” “Programming”

--- Rotational speed min <100%

Corresponding values in menu

Thermostat

(Storage top)

Heating on (A3)

T[ºC]

10k

TTh

40ºC

off

11.0 Commissioning of solar controller

11.13 Rotational speed regulation

1. The solar circulation pump on 230V-outputs A1 and A2 can be operated either in switch-mode (two-point controller) or in a rotational speed regulated way. If the rotational speed regulation is activated the pump power is adjusted by a controller so that switch-on temperature difference “Storage tank dTmax” is kept constant as much as possible. At lower deviation of “Storage tank dTmax” the pump is operated with the lowest power till the switch-off wave is reached.

11.14 Thermostat (heating)

1. The thermostat is an independent control circuit from the storage loading. Thus, auxiliar y heating of the top area of the storage cylinder is made possible. The output A3 will be:

• Switched on, when the temperature falls below the adjusted start level.

• Switched off, when the temperature reaches the adjusted start level + hysteresis.

11.15 Thermostat (cooling)

1. In order to optimise the energy yield, it could be useful to

“redirect” the solar energy, or to take it away from the storage when the storage temperature reaches a pre-set level. When the sensor reaches the start temperature, output A3 will be switched on. When the temperature level falls below the start temperature hysteresis, the output A3 will be switched off.

Fig. 35

Page 34

“Basic Setting” “Programming”

4 -- 1 Time period (4) Start: min time

Time period (4) Stop: max time

Corresponding values in menu

Short circuit on temperature sensor of the current measuring point

Break on temperature sensor of the current measuring point,

circulation error at activated energy productivity measurement

Indication Meaning

11.0 Commissioning of solar controller

11.16 Tube collector

1. The function “tube collector” can be switched off/on in the “Basic setting” menu – point 4. Timeframe 4 in the “Program” menu makes it possible to activate this function during certain periods of the day. When activated, the solar pump will be switched on every 30 minutes for a period of 30 seconds to check for any heat gain in the collector.

11.17 Sensor monitoring

1. The sensors and their connecting cables are constantly monitored for any break or short circuit. If a faulty sensor is detected by the controller, the symbol is shown. By scrolling up and down you can detect the source of the error.

The use of the wrong type of temperature sensors can also give to an error message

Page 35

Indication Meaning

+ Fluid flow is above 90°C (indication) / Missing circulation in solar circuit

11.18 Flow monitoring

1. If during normal operation the flow temperature rises above

90°C a warning indication will be shown.

2. If the energy productivity measurement option is

deactivated, the temperature difference between collector and storage tank is checked. If the temperature differential exceeds 60K + dTmax an error message will occur, as under normal system operation where the pump is running, large temperature differences would not normally be seen.

3. If the energy productivity measurement option is activated,

the flow rate is checked, if no flow is detected for 15 minutes an error message will be seen (Applicable if Flow Meter fitted).

NOTE: these error conditions will automatically reset after a short period of operation once normal flow/temperature conditions are restored.

11.19 System protection function

1. The system protection function switches the system off if the

“maximum collector temperature” is exceeded by 10K. As soon as the temperature drops below the “maximum collector temperature”, the system restarts. This function has priority and is always active, regardless of whether the collector protection is on or off.

11.20 Frost protection

1. This function can be switched on or off by using item 11 in

the “Basic adjustments” menu. The start temperature can be adjusted with item 13. Furthermore, a frost protection sensor can be selected (T1-T6, point 12).

2. If the measured value is lower than the star t temperature,

the solar pump is activated until the adjusted frost protection start temperature +5K is reached. The minimum runtime of the pump is 5 minutes.

3. For safety reasons the function is deactivated if the

temperature of the priority storage falls below 5ºC.

11.0 Commissioning of solar controller

Page 36

“Basic Setting” “Programming” “info”

5 -- 1 --- XXXX kWh

Corresponding values in menu

“Programming” “info”

--- XXXX h

Corresponding values in menu

11.21 Energy productivity measurement

1. For the purposes of energy productivity measurement (solar gain), a sensor on the collector return line and an optional flow meter are required. The yield value is calculated from the values of the temperature difference between the collector and collector return line and the value measured by the flow meter. This function is switched on and off in the “Basic settings” menu.

11.22 Operating hours meter

1. When the storage tank is being charged by a pump, the operating hours meter records for each separate pump. The number of operating hours can be read in the “info” menu. This may be reset to ‘0’.

11.0 Commissioning of solar controller

Page 37

12.0 Setting the system flow rate

12.1 Checking and adjusting the flow rate

1. Adjust the flow rate when the system is cold (approx 20°C) (see Fig. 36).

2. The flow rate should be adjusted to give the optimum flow rate depending on the number and type of collector(s) connected.

3. Manually operate the solar pump (See Section 11.5).

4. Set the solar pump speed selector (Fig. 36 Item 5) so that the required flow rate is achieved or exceeded with the lowest possible setting. The flow limiter adjusting screw (Fig. 36 Item 3) can be used to fine-tune the flow rate.

5. Depending on the number and type of collectors installed, set the required flow rate from table (See Table 1).

6. The float in the flow meter will indicate the circulation flow rate through the flow meter sight glass (Fig. 36 Item 4).

7. Adjust screw of the flow limiter (Fig. 36 Item 3) with a screwdriver, until the upper edge of the float in the sight glass indicates the required flow rate (Fig. 36 Item 4). Turn the screw anticlockwise to increase the flow.

8. Ensure that the float is stable when the pump is running.

9. Set manual pump operation to off (See Section 11.5).

12.2 Installation of the thermal insulation

1. Refit the controller mounting moulding (Fig. 37 Item 1) onto the rear moulding.

2. Push the front thermal insulation (Fig. 37 Item 2) against the rear thermal insulation section (Fig. 37 Item 3) until it clips into place.

Fig. 36

Fig. 37

Table 1

Flow rate

(when system is cold)

Area l/min

2 - 4

3 - 6

4 - 8

5 - 10

6 - 12

Page 38

Commissioning record

The following chart should be completed during Commissioning of the system.

Installer: _______________________________

Contact details: _______________________________

Original commissioning date: _______________________________

General Commissioning

All pipework correctly installed, identified and ❑ earth bonded

Solar expansion vessel charge pressure checked ❑ and set before filling the system bar

Solar primary system filled with heat transfer ❑ fluid supplied

System pressure test carried out ❑

Air vented from system ❑

Exposed pipework insulated using high-temp and ❑ weather resistant insulation (bird/rodent-proof)

collector installation weatherproof ❑

Collector fixings checked and secure ❑

Hydraulic Station

System pressure when cold bar

Solar primary flow when cold l/min

Isolating/non-return valves (flow and return) in ❑ operating position

Solar Collectors

Collector visually inspected for defects ❑

Collector temperature sensors correctly installed ❑ and secured

Pipe entry points to building weatherproof ❑

Solar Differential Temperature Controller

Record all operational parameters set ❑ (see separate table)

Pump operation tested in automatic and manual ❑ modes

All cables correctly installed and secured ❑

Suitably fused isolating device installed ❑

Controller earthed ❑

Solar Cylinder

Cylinder installed and commissioned in ❑ accordance with cylinder installation instructions

Adjustable in menu Typical Current "Programming" adjustment adjustment

Storage tank1: 65°C * Maximum storage temperature

Storage tank1: 7 K switch-on difference (dTon)

Storage tank1: 3 K switch-off difference (dToff)

Storage tank2: 90°C * Maximum storage temperature

Storage tank2: 7 K switch-on difference (dTon)

Storage tank2: 3 K switch-off difference (dToff)

Minimum pump power on 100% rotational speed regulation

Switch-on temperature of 40°C thermostat function

Hysteresis of thermostat function 10 K

2nd temperature differential 65°C controller maximum temperature Tmax

2nd temperature differential controller 7 K hysteresis dTmax

Adjustable in menu Typical Current "Basic adjustments" adjustment adjustment

Switching on or off the function 0 = off * collector protection

Temperature at which the collector 120°C * protection function is active

Switching on or off the function 0 = off * recooling (only when the collector protection is on)

Temperature to which the storage 40°C * tank is recooled when collector protection function is on

Function for time-controlled 0 = off circulation in operation with tube collectors

Switching on or off the function 2 = on energy productivity measurement

Choice of glycol types used 0 = Anro

Mixture ratio of coolants 50%

Litres per min 10 l/m

Switching on or off the function 0 = off antifreezing

Temperature at which the antifreezing 3°C is active

Alternative choice of the cooling, 2 thermostat function or the 2nd temperature differential controller

System type type 0

Time control in secs 240

Storage priority 1

Solar differential temperature controller - operational parameters

If any factory values are changed please enter the new values in the table below.

BPEC No.: _______________________________

Serial Nos. Cylinder _______________________________

Collector _________________

Pump Station Serial Number: ___________________________

* Baxi recommends these settings are left at the default value.

Page 39

Date Date Date Date Date Date Date Date Date Date Date Date Date

/ / / / / / / / / / / / / / / / / / / / / / / / / /

Check condition of all pipework + insulation ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check condition of mountings ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check frost protection of solar fluid (every 2 years)

Concentration ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Check pH (7.0 - 9.5) ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Protection to ºC ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Next check date ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Check solar expansion vessel charge pressure

bar bar bar bar bar bar bar bar bar bar bar bar bar

Check solar primary system pressure (cold)

bar bar bar bar bar bar bar bar bar bar bar bar bar

Check solar primary system flow rate

l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min

Check operation of PRV ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check discharge vessel fluid level ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check sensor operation ❑❑❑❑❑❑❑❑❑❑❑❑❑

(use resistance/temperature table. See page 43)

Check solar cylinder in accordance with ❑❑❑❑❑❑❑❑❑❑❑❑❑

manufacturer's instructions

Ensure system is free of air ❑❑❑❑❑❑❑❑❑❑❑❑❑

Visually check condition of solar collector mountings ❑❑❑❑❑❑❑❑❑❑❑❑❑

KWh recorded (if applicable) ❑❑❑❑❑❑❑❑❑❑❑❑❑

Visually check condition of any waterproofing ❑❑❑❑❑❑❑❑❑❑❑❑❑

(around pipe entries to roof and roof fixings)

Engineer’s initials

____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

BPEC Number

Servicing and maintenance record

Please complete the following record after any Servicing or Maintenance of the system. Refer to the Commissioning Record charts for details of the original system for reference. Refer to Maintenance section for recommended Maintenance periods

Page 40

Date Date Date Date Date Date Date Date Date Date Date Date Date

/ / / / / / / / / / / / / / / / / / / / / / / / / /

Check condition of all pipework + insulation ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check condition of mountings ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check frost protection of solar fluid (every 2 years)

Concentration ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Check pH (7.0 - 9.5) ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Protection to ºC ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Next check date ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Check solar expansion vessel charge pressure

bar bar bar bar bar bar bar bar bar bar bar bar bar

Check solar primary system pressure (cold)

bar bar bar bar bar bar bar bar bar bar bar bar bar

Check solar primary system flow rate

l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min

Check operation of PRV ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check discharge vessel fluid level ❑❑❑❑❑❑❑❑❑❑❑❑❑

Check sensor operation ❑❑❑❑❑❑❑❑❑❑❑❑❑

(use resistance/temperature table. See page 43)

Check solar cylinder in accordance with ❑❑❑❑❑❑❑❑❑❑❑❑❑

manufacturer's instructions

Ensure system is free of air ❑❑❑❑❑❑❑❑❑❑❑❑❑

Visually check condition of solar collector mountings ❑❑❑❑❑❑❑❑❑❑❑❑❑

KWh recorded (if applicable) ❑❑❑❑❑❑❑❑❑❑❑❑❑

Visually check condition of any waterproofing ❑❑❑❑❑❑❑❑❑❑❑❑❑

around pipe entries to roof and roof fixings

Engineer’s initials

____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____

Page 41

13.0 Maintenance

13.1 Check heat transfer fluid

1. The heat transfer fluid must be checked every year with regard to its antifreeze and pH value. (7.0 - 9.5)

- Check antifreeze using antifreeze tester. Target value is approximately -21 deg C (40% concentration). Replace fluid if necessary.

13.2 Maintenance of the collector

1. The collector or the collector array must be

checked/serviced annually to check for any damage, leaks or contamination.

2. In areas where there may be a build up of dir t on the

collector, only non-abrasive cleaning materials and methods should be used to clean the collectors and mounting system components.

13.3 Cylinder

1. Refer to manufacturer’s documentation.

Page 42

14.0 Fault finding

14.1 Failures with error message

1. Some system failure modes can be recognised by the solar differential temperature controller and will be indicated by an error message on the controller display. Refer to the table below for details of possible errors and suggested measures to rectify.

NOTE: These error messages wil automatically reset when the fault has been rectified. In the case of the circulation error this may take a few minutes to clear once normal flow has resumed.

Error representation on display Possible reasons Measures

• Sensor wire broken • Check wire

• Sensor defect • Check sensor resistance, if necessary exchange sensor

• Sensor missing • Check parameter settings and sensor installation requirements

• Short circuit in sensor wire • Check wire

• Sensor defect • Check sensor resistance, if necessary exchange sensor

• Error in pump connection • Check cabling

• Pump defect • Exchange pump

• Air in the system • Check the float of the flow meter moves when the system runs (if visible)

• Connection with flow • Check wire

meter defect

• Sensor wire broken • Check wire

• Sensor defect • Check sensor resistance, if necessary exchange sensor

• Sensor missing • Check parameter settings and sensor installation requirements

!!!

Circulation error: no flow

Additionally at energy productivity measurement:

flashing

Page 43

Resistance table PT1000. The correct function of temperature sensors can be checked on the basis of the following temperature resistance table with a resistance measuring instrument:

14.0 Fault finding

Temperature in ºC Resistance in Ohm

-30 882

-20 921

-10 960

0 1000

10 1039

20 1077

30 1116

40 1155

50 1194

60 1232

70 1271

80 1309

90 1347

100 1385

120 1461

140 1535

200 1758

YES

No display at solar differential

temperature controller

Controller fault

Replace controller

Is the 230/240V~ power

supply switched on

YES

Has thermal cutout

on cylinder operated

(unvented systems only)

Is internal

fuse operational

YES

Replace internal fuse

Check wiring and rectify

Reset thermal cutout.

Investigate cause of operation

and rectify Note: Allow the cylinder to cool or draw off the hot water before

resetting

Is the 230/240V~

power supply at the controller

terminal block

Switch on power supply

Is the 230/240V~ power

supply correctly wired

YES

Correct any wiring faults

Page 44

14.0 Fault finding

YES

Pump symbol on controller rotates

but pump does not operate

Pump fault

Replace pump

Is controller to

pump connection correct

and secure

YES

Is the pump siezed

NO NO

YES

Can the impeller be

revolved using a screwdriver

after removing the air

bleed screw

Free impeller and replace

air bleed screw

Check connections and

rectify as necessary

YES

Displayed temperatures on controller

vary greatly over short time intervals

Controller fault

Replace controller

Are sensor cables

laid alongside mains

voltage cables

Have sensor cables

been lengthened with

unshielded cable

Do sensors give

correct temperature

resistance readings

YES

Are sensor

connections correctly

made

YES

Sensor fault

Replace sensor

Use shielded cable to extend

sensor cable lengths

Seperate sensor cables from

mains cables (Min. 50mm

recommended) or use

shielded cable

Rectify sensor connections

Page 45

15.0 Spares

15.1 Spare parts and Accessories

1. A number of Spare Parts are available should any part of the system require replacement. Use only genuine parts obtained from Baxi, use of other non Baxi parts may cause system malfunctions and will invalidate the warranty. Fitting of any spare parts must be carried out by a competent installer or authorised service engineer or agent.

Short Parts List

Key Description Manufacturer’s No. No. Part No.

A1 Connection Washer 5119535

B1 Temperature Sensor 720224801

C1 Solar Differential Temperature Controller 720709001

D1 Insulation 720689701

E1 Insulation Inser t 720689901

F1 Safety Group 720690901

G1 Solar Primar y Circulating Pump 720688101

J1 Temperature Gauge 720689101

K1 Solar Expansion Vessel 24Litres 5119548

L1 Expansion Vessel Self-sealing Connection 5119779

Page 46

16.0 Warranty

16.1 Standard Warranty Terms & Conditions

Flat Plate Solar Collectors 10 Years Evacuated Tubes Collectors 5 Year s Solar Control Station 2 Years

To receive your free warranty please complete the form supplied with the system within 30 days of installation, or simply call heateam, the service division of Potterton on 0844 871 1568

Our promise to you

If you experience a fault with your new Solarflo system, we aim to provide a safe and high quality repair service supported by our dedicated national network of highly skilled engineers. If your installer can't resolve the problem for you, we will do everything we can to get an engineer out to you as quickly as possible. Nothing in this warranty will affect your statutory consumer rights.

What you need to do if you experience a problem with your system.

You should always contact your installer first because the fault may not be related to the Solarflo installation. If your installer confirms that the fault is within the Solarflo system itself and he/she decides they cannot repair it our friendly customer service team is on hand to help. Simply call our service division heateam on 0844 8711568 informing the operator that you are a Solarflo customer. They will be able to provide you with technical help or assist with booking an engineer visit if required. Our contact centre is open Monday to Friday 8am 5pm, excluding Christmas Day and New Years Day.

When calling heateam you must have the following information to hand: -

Solarflo serial number (Affixed to Solar controller) Solarflo system model number (Affixed to Solar controller) Your Postcode and House Number Your installer name, address details and contact details Proof of purchase (if you do not have the Solarflo serial number or model number)

What this warranty covers

1. Free of charge repair or replacement of components found to be faulty from manufacture.

2. Free of charge replacement of the complete assemblies provided always that the failure is related to a manufacturing fault that cannot be repaired or is beyond repair.

3. The warranty runs from the date your product is installed.

What this warranty does not cover

4. Solarflo collectors that are installed damaged or damaged during installation. If a Solarflo collector is found to be damaged on delivery then it must not be installed, simply return it to your supplier for replacement under warranty.

5. Correctly specified solar fluid will protect the installation down to outside temperatures of -20°C. System failure resulting from incorrect fluid (thereby resulting in freezing fluid in the system) is not covered under warranty.

6. The warranty will become invalid if the failure is due to frost damage (see point 5), transient voltages, lightning strikes or any act of vandalism or misuse.

Page 47

16.0 Warranty

16.1 Standard Warranty Terms & Conditions (cont)

7. This guarantee does not cover the effects of scale.

8. Tampering or modification will invalidate this warranty.

9. The installation must be in an appropriate location and its use is restricted to potable water.

10. Baxi Heating UK Ltd will only carry out warranty repair/replacement to Solarflo collectors which have safe access and that meet current Health & Safety working at heights requirements. The customer will cover the cost of any safety equipment e.g. scaffolding and lifting equipment etc. that is required to meet this standard and will appoint a contractor to carry this work out. heateam accepts no liability for any third party damage.

11. Repairs to Solarflo system that haven't been installed and commissioned properly, as set out in the installation and commissioning instructions.

12. Any other defects or failures, either in the connected system or outside of the Solarflo system itself

13. Installations within commercial settings for which this Solarflo system was not designed.

14. Reimbursement of any third party repair or replacement costs that we haven't been told about and agreed with you in advance.

15. Compensation for consequential losses (e.g. loss of earnings, business losses, stress and inconvenience) arising from a product breakdown, including repair delays caused by factors outside our reasonable control.

16. heateam will not be liable for failures resulting from fair wear and tear, willful or accidental damage, negligence, abnormal working conditions, failure to comply with instructions (whether oral or in writing), misuse or alteration of the product without heateam’s approval.

17. Defects which are repor ted out with the warranty period will not be covered by this warranty.

18. Installations which have not been carried out by fully trained and competent person(s) will not be covered by this warranty.

19. Products that have been subjected to the following conditions will not be covered by the warranty:

a) prolonged stagnation conditions or products that exhibit signs of extreme temperature exposure b) acts of god, explosions, floods, tempests, inclement weather, fire or accident c) war, sabotage, insurrection , civil disturbance or requisition d) acts, restrictions, regulations, by-laws, prohibitions or measures of any kind on the part of any Governmental, Parliamentary or Local Authority e) theft or malicious damage

Page 48

Comp No 720669102 (5/12)

All descriptions and illustrations provided in this leaflet have been carefully prepared but

we reserve the right to make changes and improvements in our products which may affect

the accuracy of the information contained in this leaflet. All goods are sold subject to our

standard Conditions of Sale which are available on request.

BAXI

A Trading Division of Baxi Heating UK Ltd (3879156),

Brooks House, Coventry Road, Warwick. CV34 4LL Technical Enquiries 0844 871 1568 Our contact centre is open Monday to Friday 8am to 6pm, Weekends and Bank Holidays 8.30am to 2pm. We are closed Christmas Day and New Years Day. Website www.baxi.co.uk e&oe

Baxi 2nd Fix Solar User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual