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Solar revision Solar revision Southern roof gives 1500hrs/per/year Southern roof gives 1500hrs/per/year Black NTC for external use Black NTC for external use Internal grey Internal grey Trac Trac pipe connected to pump station to vessel is un disperse heat from expansion vessel pipe connected to pump station to vessel is un- -insulated to disperse heat from expansion vessel insulated to

Solar revision Solar revision 1.4kw/per/m 1.4kw/per/m2 2 Should the solar sit further than 200mm from roof line planning permission is required Should the solar sit further than 200mm from roof line planning permission is required Operates at 2bar Operates at 2bar Releases at 6bar Releases at 6bar Glycol Glycol- -water evaporates leaving sludge and legionella water evaporates leaving sludge and legionella

Solar revision Solar revision Pump is sited on return Pump is sited on return Single check valve is sited on return Single check valve is sited on return Turn temperature handles for filling/purging Turn temperature handles for filling/purging Cooling vessels are installed prior to expansion vessel to prevent heating neoprene diaphragm Cooling vessels are installed prior to expansion vessel to prevent heating neoprene diaphragm

Solar revision Solar revision Programmer functions on information from cylinder temperature, array NTC difference which can be set Programmer functions on information from cylinder temperature, array NTC difference which can be set 3 3- -11 11 Every Every 1 1m m2 2 requires requires 50 50litres litres Flat roof requires planning permission Flat roof requires planning permission Refractometer should read at least Refractometer should read at least - -16 16 PH scale should read above PH scale should read above 7 7

Solar revision Solar revision Hydrometer must be above 1.026 Hydrometer must be above 1.026 Anti Anti- -reflection glass increases efficiency by 7% call etching technology reflection glass increases efficiency by 7% call etching technology Array must be covered whilst being installed Array must be covered whilst being installed Serpentine pipe lay Easier for draining, longer period in sun Serpentine pipe lay- -out in Panel Easier for draining, longer period in sun out in Panel Black anodised aluminium against corrosion Black anodised aluminium against corrosion

Solar revision Solar revision Mirosol Mirosol paint used for anti paint used for anti- -reflection reflection Panels are not allowed when visible from traffic areas in conversation or world heritage zones Panels are not allowed when visible from traffic areas in conversation or world heritage zones Differential controller, switches the pump off when the temperature difference on the collector is small Differential controller, switches the pump off when the temperature difference on the collector is small

Solar revision Solar revision Note for installation/Surveys Note for installation/Surveys Orientation Shading Roof tile Condition Conservative area? Wind exposure Flat roof Usage Orientation Shading Roof tile Condition Conservative area? Wind exposure Flat roof Usage Tubes are 10 Tubes are 10- -20% more efficient 20% more efficient

Solar revision Solar revision Flush Glycol every five years Flush Glycol every five years Type Type O O insulation is vermin and heat proof ( insulation is vermin and heat proof (150 150 ) Pump station must be installed lower than collector Pump station must be installed lower than collector Always set flow rate as per manufacturers instructions Always set flow rate as per manufacturers instructions Air separators must be installed on return Air separators must be installed on return

Solar revision Solar revision 1m per person 1m per person 100litre per property + 50 per person 100litre per property + 50 per person Solar thermal only needs day light not sunshine Solar thermal only needs day light not sunshine Heat exchanger size should be 10% of collector Heat exchanger size should be 10% of collector Solar is always bottom coil Solar is always bottom coil

Solar revision Solar revision No soldered fittings No soldered fittings No plastic pipe No plastic pipe No PTFE No PTFE

Solar revision Solar revision You You are are able able to to connect vertical connect up vertical or up to or up to 12 up to 12 collectors to 5 collectors in a 5 collectors in a row in a row row (TBOE) horizontal row (TBSE) (TBOE) horizontal or (TBSE) or collectors in a

Solar revision Solar revision Segment ring/ Segment ring/tricorn tricorn

Solar revision Solar revision 12 maximum panels are allowed in a series 12 maximum panels are allowed in a series

Solar revision Solar revision Active solar requires pump Active solar requires pump Passive systems gravity Passive systems gravity Locate rafters using magnets Locate rafters using magnets More than 9m planning permission required More than 9m planning permission required Must be more then 5m from boundary Must be more then 5m from boundary Planning needed if fitted higher than 4m Planning needed if fitted higher than 4m

Planning required, Planning required, If array stands more than 200mm from roof If array stands more than 200mm from roof If panel are highest point on roof except chimney If panel are highest point on roof except chimney If fitted within 1m of a flat roof edge If fitted within 1m of a flat roof edge

Servicing Servicing Continuity of insulation, leaks, mounts, clean bird mess Continuity of insulation, leaks, mounts, clean bird mess Is the cylinder compatible for solar (handle stress, scale, coil 10% of panel, Boiler interlock fitted) Is the cylinder compatible for solar (handle stress, scale, coil 10% of panel, Boiler interlock fitted) Check AAV, water softener Check AAV, water softener Check pump setting, flow rates, temperature differential Check pump setting, flow rates, temperature differential Glycol test Glycol test Propylene Glycol is used for solar Propylene Glycol is used for solar Ethylene Glycol for external low toxic Ethylene Glycol for external low toxic

Three types of solar panels Three types of solar panels Unglazed collectors Unglazed collectors Flat plate glazed collectors Flat plate glazed collectors Evacuated tubes Evacuated tubes Legionella Legionella avoid temperatures above avoid temperatures above 25 Under L8 25 and and60 60

How to calculate flow rate How to calculate flow rate KW x T SHC x TD KW x T SHC x TD Kw Kw amount of energy collector can absorb amount of energy collector can absorb Time Time 1 1sec sec SHC specific heat capacity of fluid SHC specific heat capacity of fluid 3.9 3.9 TD temperature different TD temperature different 3.24 3.24 x x 1 1 = = 3.24 3.24 = = 0.138 0.138L/sec L/sec 3.9 3.9 x x 6 23.4 6 23.4

Pipe diameter up to 40mm must have insulation thicker than the pipe diameter Pipe diameter up to 40mm must have insulation thicker than the pipe diameter Flat packs are known to still function after 60years Flat packs are known to still function after 60years Defused means cloudy weather Defused means cloudy weather Solar thermal provides a saving of 60% Solar thermal provides a saving of 60% Glycol is not allowed in drains Glycol is not allowed in drains Flat roofs installation require planning permission Flat roofs installation require planning permission

Cylinder NTC should be 75mm below coil flow Cylinder NTC should be 75mm below coil flow Expansion vessels must be installed upside down Expansion vessels must be installed upside down PRV must exit into temperature rated container PRV must exit into temperature rated container Direct systems collector with no coil are ban in UK due to Glycol Direct systems collector with no coil are ban in UK due to Glycol Swimming pool solar thermal must have no insulation and unglazed to prevent over heating Swimming pool solar thermal must have no insulation and unglazed to prevent over heating Solar systems must have TMV Solar systems must have TMV

Solar fraction is efficiency delivering heat from collect to cylinder Solar fraction is efficiency delivering heat from collect to cylinder Ideal pitch is 30 Ideal pitch is 30- -45 45 , winter 50 , winter 50 I.A.M Incidence Angle Modifier I.A.M Incidence Angle Modifier Coil surface area should be 10% of panel area 0.1m per 1m of panel Coil surface area should be 10% of panel area 0.1m per 1m of panel Drain valves must be fitted after isolation and dry to prevent washer melting Drain valves must be fitted after isolation and dry to prevent washer melting

Always use metals clips over insulation Always use metals clips over insulation Use brass olives and not copper Or crimping Use brass olives and not copper Or crimping Use solar designed fibre washers Use solar designed fibre washers Expansion vessels prevent vacuuming in cold weather Expansion vessels prevent vacuuming in cold weather Prior to adding Glycol flush using sanitizer Prior to adding Glycol flush using sanitizer

Solar fitted higher than the roof line (except chimney) requires planning permission Solar fitted higher than the roof line (except chimney) requires planning permission Vertical collectors require planning permission Vertical collectors require planning permission Solar water is category 3 Solar water is category 3 Water flow rate through solar should be at least 25l/min Water flow rate through solar should be at least 25l/min 80% of daily usage should be heated by VS coil 80% of daily usage should be heated by VS coil

The temperature rated discharge container must hold Glycol to cool down heated discharged water The temperature rated discharge container must hold Glycol to cool down heated discharged water The anaconda must be un insulated to prevent the vessel overheating The anaconda must be un insulated to prevent the vessel overheating Servicing Glycol Servicing Glycol Must be above 7ph Must be above 7ph 1.026 above in density hydrometer 1.026 above in density hydrometer Refractometer Refractometer - -28 ( 28 (- -16 for old systems) 16 for old systems)

Most pump flow rate are set around Most pump flow rate are set around 1.33 1.33 l/min l/min Always cover collectors when flushing, filling due to flash back of heat Always cover collectors when flushing, filling due to flash back of heat Silicone pipe work is allowed on direct DHW (pipe can handle freezing and cylinder of hot water will cool system down) Silicone pipe work is allowed on direct DHW (pipe can handle freezing and cylinder of hot water will cool system down) Always test system below PRV setting with water as its cheaper and prevent waste issues Always test system below PRV setting with water as its cheaper and prevent waste issues Rubber slates are made from EPDM handles high temperatures Rubber slates are made from EPDM handles high temperatures Solar factor is energy used to provide hot water Solar factor is energy used to provide hot water

Solar dedicated water area must be more than Solar dedicated water area must be more than 25 25l/min l/min Vs, which is cylinder solar volume of the coil must meet daily demand Vs, which is cylinder solar volume of the coil must meet 80 daily demand 80% of the % of the Vb Vb, which is the cylinder boiler volume of the coil can loose the solar , which is the cylinder boiler volume of the coil can loose 30 the solar Vd 30% for % for Vd (daily demand) (daily demand) Rule of thumb Rule of thumb ( (25 25 x x Np Np) + ) + 36 36 = = Vd Vd

Pressure test systems to 1.5 times working pressure for 60mins or just below PRV discharge pressure for 30minutes Pressure test systems to 1.5 times working pressure for 60mins or just below PRV discharge pressure for 30minutes Varister Varister is lighting protection is lighting protection Rafters must be at least 50mm thick Rafters must be at least 50mm thick Hemp should be used instead of PTFE Hemp should be used instead of PTFE Earth cable must be 16mm Earth cable must be 16mm

Remove collector cover only when system has been filled and tested Remove collector cover only when system has been filled and tested 25litres per/min of collector 25litres per/min of collector Direct systems are banned in UK as Glycol is added to water Direct systems are banned in UK as Glycol is added to water Evacuated tubes are more efficient than flat plates Evacuated tubes are more efficient than flat plates

Flow rates are usually set between 1.0 Flow rates are usually set between 1.0 - - 2.0 (for flat pack) 2.0 (for flat pack) 3 l/m for 3 l/m for tubular tubular When purging and testing PV solar systems always convert electricity to DC When purging and testing PV solar systems always convert electricity to DC All solar cylinders must have TMV All solar cylinders must have TMV Collectors must only be installed with compatible combination boilers able to with stand high temperatures Collectors must only be installed with compatible combination boilers able to with stand high temperatures Solar and combination boilers with have TMV and blend valves used Solar and combination boilers with have TMV and blend valves used

Fire resistance properties when pipes pass through walls Fire resistance properties when pipes pass through walls Collectors installed in a series formation is; Collectors installed in a series formation is; Where one panel is disconnected the whole system shuts down Where one panel is disconnected the whole system shuts down Collector in parallel formation; Collector in parallel formation; Individual supply to each collector Individual supply to each collector

Drain back systems using copper pipe are allowed to use plastic fitting and solder Drain back systems using copper pipe are allowed to use plastic fitting and solder Drain back does not require glycol Drain back does not require glycol Temperature rated discharge containers must hold at least 25mm of glycol for discharge cooling purposes Temperature rated discharge containers must hold at least 25mm of glycol for discharge cooling purposes

15 15 min min 75 75 max for collection angle max for collection angle Drain back systems must be installed within bottom of drain back station and a minimum of required Drain back systems must be installed within 6 6m from top collector to bottom of drain back station and a minimum of 1 1m pipe work required m from top collector to m pipe work Drain back systems use only flat plate collectors specially designed due to the narrow serpentine design, with a designed flow rate of 2 2l/min Drain back systems use only flat plate collectors specially designed due to the narrow serpentine design, with a designed flow rate of l/min Pipe work must have a gradient of Pipe work must have a gradient of 4 4cm/pm cm/pm

4cm per 1m = 2.3 General notes When using the VPM 15 D Basic module, up to 6 collectors can be installed. The collectors can be installed in series or can be split in 2x2, 2x3 or 3x2 collectors arrays. When using the VPM 30 D module up to 12 collectors can be installed (7 and 11 not possible). The collectors can be installed in two rows with 6 collectors or can be split in2x4, 3x3, 2x5 3x4, 4x3 or 6x2 collector arrays. 8

When installing panels be cautious regarding the edge areas When installing panels be cautious regarding the edge areas Which is calculating the clearance zone from the edges (including ridge) to prevent wind turbulence and up lift Which is calculating the clearance zone from the edges (including ridge) to prevent wind turbulence and up lift Arranging from a 1m to 2m Arranging from a 1m to 2m