joule NAVITAS User manual

NAVITAS
joule navitas solar on-roof at panel
installation manual
INSTALL

Installer Loyality Scheme
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Table of Contents:
04 Introduction
05 Site survey
06 Risk assessment
08 Kit components
09 Mounting Options
10 Important Pre Installation Information
11 Roof Mounting Options
14 Sloped Roof Bolt Mounting Kit
15 Sloped Roof Tile Mounting Bracket
16 Sloped Roof Slate Mounting Bracket
17 Flat Roof Mounting Frame
18 Collector Assembly
22 Pump Station
23 Safety Vessel Connection
24 Electrical Solar Controller
28 Commissioning
30 Servicing and Maintenance
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NAVITAS installation manual

Introduction
Solar hot water systems should be designed and sized correctly before commencing
the installation. Proper design will ensure that a system is correctly sized to provide
many years of optimised performance and most or all of the required hot water when
the most solar radiation is available. However a supplementary heating system such
as oil or gas boiler, heat pump or wood boiler is required for months which have less
solar radiation. This guide will illustrate and explain how a system should be installed
to conform to the Joule manufacturer guidelines for the Navitas product models. Us-
ing this guide Stages of a solar installation are described in the following pages, with
illustrations where necessary to explain how to install the relevant components, and
contains general recommendations and important safety information.
Handling Guidance
• Tubeandmanifoldboxesshouldbetransportedhorizontally.
• Heavygoodsshouldnotbeloadedontopofthekitboxes.
• Careshouldbetakenwhenopeningboxestopreventscratchesorsuddenshocks
to the glass.
• Donotusesharpobjectstoopenthetubeboxes.
Installation Guidance
• Unpackandinstalltubesonlyafterthemanifoldandpipeworkhasbeeninstalled.
• Donotleavethesolarcollectorexposedtosolarradiationwhenthesolarloopand
manifold have been drained. Collectors left exposed in a dry state must be cov-
ered to prevent possible long term damage.
• Tubesmusthaveaminimumelevationof20˚andamaximumof70˚.
• Thepipeworkofthesolarcollectorloopistobeearthedandthecollectoristobe
lightening protected in accordance to local regulations.
A solar panel installation must be performed in accordance with all Health & Safety
legislationandlocalbuilding/planningregulationsfortherelevantjurisdiction.Further-
more,thenecessaryelectricalworkrequiredtoinstallcontrolequipmentshouldbe
undertakenbyaqualiedelectricalcontractor.
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DegreeofOverShading
Shadingwillreducetheoverallperformanceofasolarsystem.Duringtheplanningstageofasolarsystem.Con-
sid-erationshouldbegiventothelocationofthecollectorswiththeaimofminimisingtheeectsofshadingfrom
high buildings, trees, etc.
none / little / a lot
CollectorFixingSurface
Is there enough room for the solar panels to sit on the required roof? (yes/no)
Is there enough between gulleys (top, bottom and both sides) to prevent leafs and debris from gathering
around the panels?
(yes/no)
OrientationofRoof&EstimatedTiltAngleofRoofforMountingSolarCollectors
WhatistheRooforientation(shouldbebetweenEastSE-WestSW)
Collector should be facing the equator
Is an inclinded roof frame need to obtain required pitch? (yes/no)
Tocalculateoptimalangleoftiltmultiplelatitudex0.7fordomestichotwaterproduction
Birr37.16°,Cork36.3°,Dublin53.43°
EstimatingHotWaterDemand&SizeofSystemRequired
No. of people using hot water in the house
Any other exceptional water loads in the dwelling
No. of People Solar Cylinder Size SizeofFlatPanelSystem SizeofEvacuatedTube
2PanelSystem(4m2) 30TubeSystem(2.83m2) 1-2people 200litres
3PanelSystem(6m2) 40TubeSystem(3.77m2) 3-5people 300litres
Location of Solar Pump Station & Solar Controller
Ensurethepumpstationislocatedinanareawhereitcanbeeasilyaccessedforservicing&main-tenance (Conrm)
Ensurethatthereisadequatespacebothleftandrightofpumpstationtoalloweasyaccesstoremovepump
in future.
Ensurethatthesolarcontrollerislocatedinanareathatiseasilyaccessiblefortheuser (Conrm)
Ensurethatthecontrollerismountedattheocrrctheightforeasyviewing. (Conrm)
ExistingPlumbingSystem
What type of plumbing system is in the dwelling (vented or un-vented)?
Is solid fuel incorporated into the plumbing system?
Isthereadequateaccesstoroutepipeworkfromsolarcollectorsdowntocylinderlocation? (yes/no)
Is there space in the hot press to locate solar pump station? (yes/no)
Site Survey
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NAVITAS installation manual

SafeRoofAccessToWork
Isthereadequateaccesstoareaofhousetomountscaoldingorladders? (yes/no)
Istheresteadyandsecurebaseonwhichtomountscaoldingorladders? (yes/no)
Arethescaoldingandorladderstforuseintended? (yes/no)
Allinstallerstrainedinworkingatheights? (yes/no)
Areallharnessandothersafetyequipmentworkingcorrectly? (yes/no)
Allworkcarriedoutshouldbeinaccordancewithallrelevantgoodpraticesandorcurrentbuildingstand-
ards.Allcurrentregulationsshouldbefollowedinrelationtoworkingatheights.Nothingstatedinthisguide
takespre-sedenceovercurrentstandards.
ConditionofRoof
 Whatarethecentresofroofrafterswheresolarcollectoristobemounted(eg400mm)? (mm)
Whatisthesizeofroofrafters(eg6x2”,7x2”,8x2”)? (inch)
Are roof rafters cross braced? (yes/no)
Is any of the timber showing discolouration (indicating rot)? (yes/no)
To determine the total load on the roof you must get the total weight of the collectors and divide this weight
bythenumberofroofxingboltsoranchorsusedtoholdthecollectorontheroof.Thiswillgiveyouthe
weight of the solar panels on each point of the roof. You must then carefully review the points where the col-
lectorsareconnectedtotherooftoensurethattheseexactpointscantaketheanticipatedload.
Wherethereissignsofdiscolourationacloserexaminationwillberequried.Ifblackspotsarefoundonthe
timberthisindicatesaleakwhichneedsattention.Ifthetimberappearsbrownandakythenthetimber
may need to be replaced. If the situation is unclear a structural engineers report should be obtained prior to
completinganyfurtherwork.
EectsofSnowLoads
What is the estimated annual snow fall for this part of the country? (mm)
TheestimatedsnowloadforallpartsofirelandmaybefoundfromhistoricaldatalocatedonMetEireann’s
website. www.met.ie
What is the total extra weight to be assumed from a snow fall? (kg)
Irishsnowweighsapprox150kgperm3.Todeterminetheextraweightthesnowwilladdtothesolarpanels
you may assume the following formula. (snow fall in meters x area of panel on the roof in m2x150kg/m3)
Whenyoundoutthetotalextraweightofthesnowaddittothetotalweightofthecollectorontheroof.
The using this new weight examine the roof structure to ensure its suitability. You do not need to consider
the snow load when installing evacuated tubes.
EectsofWindLoad
The evacuated tube collector is exempt from consideration of wind loading for the same reason as the snow loading.
Whenconsideringatpanelswindtestshavebeenconductedthatensurethattheyandtheirxingbracketscanwithstandall
recorded wind forces in Ireland when mounted on a four storey house or less.
Risk Assesment
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Pipework&Liquids
Isantifreezebeingusedasthesolarsystemuid? (conrm)
Ensuresolderjointsarenotusedthroughouttherentiresystem (conrm)
Ensurehightemperatureinsulationisusedthroughtallpipeworkinsolarsystem (conrm)
Ensurewhitepasteandhempisusedonallttingconnectionsthroughout (conrm)
EnsureyouuseJoulecopperoverowanddischargevesseltorecoveruidfromsafetyvalve (conrm)
Water Quality
Water sample visually inspected and no signs of contamination visible (yes/no)
Wheninstallingthesolarsystemitisimportanttocheckthequalityoftheexistingincomingwatertothehot
watercylinder.Ifyouareindoubtastoitspurityasampleshouldbesentotothedepartmentofhealth
for testing.
FireSafety
Ensurethatthereisnoobviousrisktorepreventionbyinstallingthesolarsystem. (conrm)
Ensurethatallwiresarenotindirectconnectionwithanyun-insulatedpipeworkorplantthatcouldcausea
riskofburning
(conrm)
Legionella / Bacterial Growth
Ensurethatthereisnodeadlegsintheexistingplumbingsystemthatcouldinducethegrowthoflegionella. (conrm)
Ensurethatthestatscontrollingtheboilerandthestatcontrollingtheimmersionaresetto60°Corabove. (conrm)
Ensurethattheclientunderstandstheriskoflegionellaandthestandardproceduresforreducingtherisk
of it forming. Also ensure that the client understands that you are their to install a solar thermal system and
thatyoudonottakeanyresponsibilityforauditingtheirhotwatersystemforriskoflegionnellaforming.
Thatyouwillendeavourtominimisetheriskofitformingbytheworkthatyoucarryoutbutanyexisting
riskshouldbedealtwithacertiedprofessional.
(conrm)
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NAVITAS installation manual

Kit Components
Solar Pump Solar Controller SolarExpansionVessel
Standard Kit Components
Mounting Options
SolarPanel&Proles
BoltMountingOption TileBracketOption SlateBracketOption
Roof Flashing Options
LeadRoofFlashing AluminiumRoofFlashing 4”RubberGasketSet
SolarFluid
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Mounting Options
Piping Options
DN16DuoPipe DN20Pipe Stainless Tails & Copper
Optional Accessories
InstallationHoseMountingSet OverVoltageLightning 3/4”ThermostaticMixingValve
CoolingVessel
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NAVITAS installation manual

Important Pre Installation Information
Sizing of safety equipment
Component sizes are relative to the volume of liquid in the system.
Pipe sizing(minimumof15mmdiameterpipeworkmustbeused)
Collector
Area (m2)
FlowRate
ltr/hr
PipeDiameter
CopperExternal
(mm)
Navitas2Panel
(mbar)
Navitas4Panel
(mbar)
Navitas6Panel
(mbar)
2 120 15 8.54 1.18 4.11
3180 15 12.57 2.87 10.74
4 240 15 17.08 2.36 8.22
5 300 22 21.11 4.05 14.58
6 360 22 25.14 5.74 20.94
8 240 22 33.68 6.92 25.05
EXPANSIONVESSSELSIZING
Model Collector Area
(m2)
SystemVolume
(ltrs)
Static Height VesselSize
Navitas2Panel 4 17 2 24
4 17 4 24
4 18 6 24
4 19 8 24
Navitas 3 Panel 6 17 2 24
6 17 4 24
6 18 6 36
6 19 8 36
Navitas4Panel 8 19 2 36
8 20 4 36
8 22 6 36
8 24 8 36
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