joule NAVITAS User manual

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

Installer Loyality Scheme
Comming Soon

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
3
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.
4

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
5
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
6

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)
7
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
8

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
9
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
10

Roof Mounting options
TheNavitasproductrangeisavailablewithachoiceofroofxingoptionstosuitmany
rooftypes,seediagrambelowforthemostcommonxings.Themostcommonx-
ings are illustrated and explained in the following section and may be easily secured
toslate,tileormasonrynishes.
Metal Roof Fixings
Joulealsosuppliesroofxingkitsformetalandothercommercialroofs.Twooptions
available utilise appropriate clamps so the fabric of the metal roof is not penetrated -
seepagexx.Notetheminimumandmaximumdistancesoneachxingkit.
Option Code Describtion
1a RF-PA-MT-BO-X Slopedroofboltkitoption
1b RF-PA-MT-SL-X Slopedroofslatemountingbracketoption
1c RF-PA-MT-TI-X Slopedrooftilemountingbracketoption
2 SOL-FRF-X-25 25°increaseroofinclinedbracket
3SOL-FRF-X-45 45°atroofinclinedroofbracket
X=2,3,4,5,6
11
NAVITAS installation manual
1a
1b 1c
2
3

10
Suggenstion for attachment points
STANDARD LOAD 1.9kN/m²
If the roof structure prevents conformance to the specified maximum projection B, then the number of
fastening points must be increased or an appropriate substructure must be fabricated on-site. For
example: the use of additional supports. Care must be taken on-site to ensure that the roof battens are
firmly screwed to the substructure in the vicinity of the collectors. The static load limits only apply in
conjunction with the maximum projection / number and clearance between supporting levels specified
in the table.
The collector inclusive roof mountings are suitable of withstanding a maximum gust of wind (V) of
150km/h and of a maximum characteristic snow load (sk) of 1.9kN/m². The statical requirements
have been defined according to EN 1991.
The supporting rails must always be installed in decreasing sequence starting with the base set TRPN2 / TRPN1!
Clearance between supporting levels / Fastening points in mm / see figure 1
Collectors 123456
Supporting planes 224467
A1540 ± 10
Bmax. 453
C1225 2453 3678 4906 6131 7359
D1 800 1600 1600 1600 1600 1600
D2 - - 800 800 800 800
D3 - - 800 1600 1600 800
D4 ----800 1600
D5 ----800 800
D6 -----1600
Abb.1 (v_2011-07)
B
C
B
A
D1 D2
STANDARD LOAD 1.9 kN/m2
IftheroofstructurepreventsconformancetothespeciedmaximumprojectionB,
then the number of fastening points must be increased or an appropriate substructure
mustbefabricatedon-site.Forexample:theuseofadditionalsupports.Caremustbe
takenon-sitetoensurethattheroofbattensarermlyscrewedtothesubstructurein
thevicinityofthecollectors.Thestaticloadlimitsonlyapplyinconjunctionwiththe
maximumprojection/numberandclearancebetweensupportinglevelsspeciedin
the table.
The collector inclusive roof mountings are suitable of withstanding a maximum gust
ofwind(V)of150 km/handofamaximumcharacteristicsnowload(sk)of1.9 kN/m2.
ThestaticalrequirementshavebeendenedaccordingtoEN1991.
The supporting rails must always be installed in decreasing sequence starting with the base set TRPN2 /
TRPN1!
Clearance between supporting levels / Fastening points in mm / see gure 1
Collectors 123456
Supporting
Planes
224467
A1540±10
Bmax.453
C1225 2453 3678 4906 6131 7359
D1 800 1600 1600 1600 1600 1600
D2 - - 800 800 800 800
D3 - - 800 1600 1600 800
D4 ----800 1600
D5 ----800 800
D6 -----1600
12

11
Suggenstion for attachment points
HIGH LOAD 2.0 kN/m²
If the roof structure prevents conformance to the specified maximum projection B, then the number of
fastening points must be increased or an appropriate substructure must be fabricated on-site. For
example: the use of additional supports. Care must be taken on-site to ensure that the roof battens are
firmly screwed to the substructure in the vicinity of the collectors. The static load limits only apply in
conjunction with the maximum projection / number and clearance between supporting levels specified
in the table.
The collector inclusive roof mountings are suitable of withstanding a maximum gust of wind (V) of
150km/h and of a maximum characteristic snow load (sk) of 2.0kN/m². The statical requirements
have been defined according to EN 1991.
The supporting rails must always be installed in decreasing sequence starting with the base set TRPN2 / TRPN1!
Clearance between supporting levels / Fastening points in mm / see figure 1
Collectors 123456
Supporting planes 2457810
A1540 ± 10
Bmax. 265,5
C1225 2453 3678 4906 6131 7359
D1 800 800 800 800 800 800
D2 - D3 -800 800 800 800 800
D4 - - 800 800 800 800
D5 - D6 ---800 800 800
D7 ----800 800
D8 - D9 -----800
Abb.1 (v_2011-07)
B
C
B
A
D1 D2
HIGH LOAD 2.0 kN/m2
IftheroofstructurepreventsconformancetothespeciedmaximumprojectionB,
then the number of fastening points must be increased or an appropriate substructure
mustbefabricatedon-site.Forexample:theuseofadditionalsupports.Caremustbe
takenon-sitetoensurethattheroofbattensarermlyscrewedtothesubstructurein
thevicinityofthecollectors.Thestaticloadlimitsonlyapplyinconjunctionwiththe
maximumprojection/numberandclearancebetweensupportinglevelsspeciedin
the table.
The collector inclusive roof mountings are suitable of withstanding a maximum gust
ofwind(V)of150 km/handofamaximumcharacteristicsnowload(sk)of2.0 kN/m2.
ThestaticalrequirementshavebeendenedaccordingtoEN1991.
The supporting rails must always be installed in decreasing sequence starting with the base set TRPN2 /
TRPN1!
Clearance between supporting levels / Fastening points in mm / see gure 1
Collectors 123456
Supporting
Planes
2457810
A1540±10
Bmax.265,5
C1225 2453 3678 4906 6131 7359
D1 800 800 800 800 800 800
D2-D3 - - 800 800 800 800
D4 - - 800 800 800 800
D5-D6 ----800 800
D7 ----800 800
D8-D9 -----800
13
NAVITAS installation manual

Sloped Roof Bolt Mounting Kit
Mounting parallel bench srew mountingsystem
12
1 )
2 )
3 )
4 )
General Note: Points 9-12, 17 and 18 of these instructions only apply
when mounting more than two collectors!
1: A = 1540 mm ±10 mm
Measure the mounting points (for a suggestion see previous side)
2: Drill tiles - Ø 14mm (Note: On roofs with corrugated tiles
do not drill boreholes in the tile trough!)
3: Drill rafters - Ø 8mm
4: Fasten bench screw, minimum screw depth ≥100mm
Roofxingboltsaredrilleddownthrough
the slate or tile covering the roof. The rub-
bergasketontheboltkeepsthepenetra-
tion point in the roof weather proofed.
The bolt is connected to the prole by
use of a stainless steel L plate and nuts,
bolts and washers. The bolt head slides
throughtheproletothedesiredlocation
andtheLbrackettoxedusingthenut
and washer.
14

Sloped Roof Tile Mounting Bracket
Adjustable tile roof mounting brackets
are an ideal solution when xing a so-
lar collector to a thick roof tile. The top
piececanadjusttoincreaseordecrease
the height of the collector above the roof
tile.Thebracketisconnectedtothepro-
le  using nuts, bolts and washers. The
boltheadslidesthroughtheproletothe
desiredlocationand then thebracket is
xedusingthenutandwasher.
15
NAVITAS installation manual

Sloped Roof Slate Mounting Bracket
Slate roof brackets are an ideal bracket
for xing the solar collectors to thin at
slates.Thebracketisconnectedtothe
proleusingnuts,boltsandwashers.The
boltheadslidesthroughtheproletothe
desiredlocationand then thebracket is
xedusingthenutandwasher.
16

Flat Roof Mounting Frame
Theatroofframecreatesapitchof35Deg
from a horizontal base. The frame is manu-
factured from 30x30mm angle aluminium.
The frame consists of triangle nunber A
frame  pieces with two back and sloped
bars.EachAframeconnectstothecollec-
torprolesusingnuts,boltsandwashers.
The frame is xed to surface by installer.
Preferredmethodfxingtoatsurfaceis
dependent on type of surface and available
supports.
17
NAVITAS installation manual

Collector Assembly
Mounting parallel bench srew mountingsystem
16
13a )
13b )
14 )
13: Hang the first collector in the lower mounting rail and adjust
(13a + 13b!)
Note: Distance between collector and end of mounting
rails = 45mm. Measurement A = Measurement B!
14: Place the clamping piece on the upper mounting rail and hand
tighten for now
Sequence: upper mounting rail - hammer-head bolt - washer -
clamping piece - washer - nut
General Note: Before mounting another collector, the cutting ring sc-
rew connection must first be moved onto the connection!
Afterproleshavebeeninstalledonroof
oratroofframethecollectorsneedtobe
mountedandxedtosame.Thebottom
prole rail clips into bottom prole sec-
tion of on-roof collector. The top prole
sits underneath collector as shown. It is
importantthatthetopproleisnotxed
with lip facing up as it does not clip into
collector.
Mounting parallel bench srew mountingsystem
17
15 a )
15 b )
16 )
17 )
15: Attach the second collector (measurement A = measurement B as
shown in Figure 13b).
Please use the mounting jig (15b).
16: Rotate the clamping piece by 90° (see figure 14) and screw it tight
using a long socket wrench
17: With clashing mounting rails, insert and position the mounting part
in the upper mounting rail
Mounting parallel bench srew mountingsystem
16
13a )
13b )
14 )
13: Hang the first collector in the lower mounting rail and adjust
(13a + 13b!)
Note: Distance between collector and end of mounting
rails = 45mm. Measurement A = Measurement B!
14: Place the clamping piece on the upper mounting rail and hand
tighten for now
Sequence: upper mounting rail - hammer-head bolt - washer -
clamping piece - washer - nut
General Note: Before mounting another collector, the cutting ring sc-
rew connection must first be moved onto the connection!
When xing the top mid-section(s) slide
boltintoproleasshown.
Fix chamfered plate to prole using this
bolt.
Mounting parallel bench srew mountingsystem
17
15 a )
15 b )
16 )
17 )
15: Attach the second collector (measurement A = measurement B as
shown in Figure 13b).
Please use the mounting jig (15b).
16: Rotate the clamping piece by 90° (see figure 14) and screw it tight
using a long socket wrench
17: With clashing mounting rails, insert and position the mounting part
in the upper mounting rail
Rotatechamferplatefromverticaltohor-
izontal position. As it turns it will clamp
intosideproleofeachpanel.Thismust
be carried out for each additional panel in
system.
18

Mounting parallel bench srew mountingsystem
17
15 a )
15 b )
16 )
17 )
15: Attach the second collector (measurement A = measurement B as
shown in Figure 13b).
Please use the mounting jig (15b).
16: Rotate the clamping piece by 90° (see figure 14) and screw it tight
using a long socket wrench
17: With clashing mounting rails, insert and position the mounting part
in the upper mounting rail
A bottom panel spacer needs to be in-
serted in middle of every second panel to
maintain the correct separation distance
at the bottom of all collectors.
The right and left hand side of the outer
collectors are held in place using the outer
clips.Theouterclipsareheldtotheprole
using bolts similar to the middle clamp.
Mounting parallel bench srew mountingsystem
18
18 )
19 )
20 )
18: Attach additional clamping pieces / collectors as described in
Points 13 - 17
19: Attach the mounting part on the upper left and right end of
the collector field
Sequence: mounting rail - hammer-head bolt - mounting part -
washer - nut
20: Screw the collectors into place with the proper torque
Mounting parallel bench srew mountingsystem
15
10 )
11 )
12a )
12 b )
10: Push the clamping piece extension halfway into the inner groove of
the mounting rails (upper and lower) and tighten
Sequence: mounting rail - clamping piece extension - washer - nut
11: Insert the following mounting rails (upper and lower) and attach
them using the clamping piece extension
Sequence: mounting rail - clamping piece extension - washer - nut
12: Attach the mounting rails (upper and lower) using the mounting
part/clamping piece extension (as described in Point 7)
Sequence: mounting rail - hammer-head bolt - mounting part -
washer - nut
Mounting parallel bench srew mountingsystem
15
10 )
11 )
12a )
12 b )
10: Push the clamping piece extension halfway into the inner groove of
the mounting rails (upper and lower) and tighten
Sequence: mounting rail - clamping piece extension - washer - nut
11: Insert the following mounting rails (upper and lower) and attach
them using the clamping piece extension
Sequence: mounting rail - clamping piece extension - washer - nut
12: Attach the mounting rails (upper and lower) using the mounting
part/clamping piece extension (as described in Point 7)
Sequence: mounting rail - hammer-head bolt - mounting part -
washer - nut
Whencollectingmountingprolestogether
aconnectionpiecelikethisisusedtoen-
surethatalltheprolesareatthesame
level.
19
NAVITAS installation manual

Collector Assembly
Connection Information
TheNavitaspanelhasbeendesignedtomakeconnectionbetweenpanelsandtoow
andreturnpipeworksimpleandwithaslittlenumberofjointsaspossible.
Connecting Panels Together
TheNavitascollectorhasa¾”atfacemalethreadononesideandaswivelnut¾”
female on the other side. This means that each panel connects directly to the panel
besideit.Abrewashermustbeinsertedbetweentheatfaceofthemalethreadand
the internal of the female swivel nut.
Connecting Flow & Return Pipework:
Tails – 075m Stainless Steel
Eachtailhasbeenmanufacturedwithaswivelnutoneachend.Thisswivelnutscrews
directlyontoonesideofthepanelsystemwherethe¾”atfacedmalethreadcon-
nectionis.A¾”x¾”atfacenipplemustbeusedbetweentheswivelnutonthecol-
lector and the swivel nut on the tails.
Stainless Steel Solar Pipe
Whenusingsolarpipeasowandreturnpipeworkthenitisadvisablethat0.75m
longtailsarenotusedalsoasthisincreasesthenumberofjointsinthesystem.The
solarpipeshouldbeprebuttedusingthesinglettingandnippleandthentheber
washerinsertedin-betweenthejointtonishtheseal..Theswivelnutttingonthe
solarpipewillscrewdirectlyontoonsideofthecollectorsystemwherethe¾”at
facedmalethreadconnectionis.A¾”x¾”atfacenipplemustbeusedbetweenthe
swivel nut on the collector and the swivel nut on the solar pipe.
Insulation
Allpipeworkonthesolarloopshouldbeinsulatedwithhightemperatureinsulation
(suchasHT/ArmaexfromArmacellGmbH).Hightemperatureinsulationisessential
as regular pipe insulation will melt at temperatures experienced by solar pipes. The
wallthicknessoftheinsulationshouldbeequaltothediameterofthepipe.Theonly
pipes which should not be insulated are the pipes to the safety vessels as they should
allow heat to dissipate when the system is experiencing excessive heat and pressure.
20