danfoss training module 1 v2 thermostatic radiator valves compressed
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C O M F O R T C O N T R O L S
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Introduction
Danfoss Training Module-1
* * * * * *
Understanding Thermostatic
Radiator Valvesfor Commercial Heating
Systems
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C O M F O R T C O N T R O L S
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Introduction
Hello and welcome to the Danfoss trainingmodule 1
Understanding Thermostatic RadiatorValves forCommercial heating systems.
The urose of this training module is togive you the !nowledge re"uired to select,specify# and understand Danfossroducts.
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C O M F O R T C O N T R O L S
$e will e%amine the benets, operation,and selection of Thermostatic RadiatorValves.
$e also want to give you anunderstanding of the systems they areart of.
Introduction
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C O M F O R T C O N T R O L S
This module ta!es around &' minutes andforms art of a Continuous ProfessionalDevelopment training course.
(nce ) modules are comlete you canaly to Danfoss for a certi*cate of yourachievement.
+ow let us ,egin-.
Introduction
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H E A T I N G S O L U T I O N S
The History of Danfoss
1933 1943 1952 2010
ads Clausen esta,lishes his comany Dans! /0leautomati! og 2arat 3a,ri!#and ,egan ,y roducing e%ansion valves for refrigeration lant
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1933 1943 1952 2010
4n 156) ads Clausen invented the very *rst radiator thermostat and in 157&roduction ,egan of the R2 tye radiator thermostat.
1943
1952
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The History of Danfoss
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1933 1943 1952 2010
The Danfoss 8rou is a globalproducerof comonents andsolutions for Refrigeration 92ir Conditioning# Heating 9$ater# and otion Controls.
Danfoss emloys aro%.&''' eole worldwideandroduces more than &7'#'''items daily# in more than 7'factories located in &'countries.
This includes a factory ,ased inBedford, Uwhich ma!es:lectronic Room Controls.
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The History of Danfoss
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1933 1943 1952 2010
Danfoss thermostats have,een leading the mar!etever since ads Clauseninvented the *rst TRV-
-and radiator thermostats are
still a core businessforDanfossto this very day.
;y selecting Danfoss roductsyou have over
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H E A T I N G S O L U T I O N S
What is a Thermostatic Radiator Valve?
2 thermostatic radiator valve is a controldevicefor individual radiators.
They use a thermostatic sensor to controlthewater =ow.
TRVs consist of two parts#a valve$$$and a sensor.
The valve is connected ,etween the ie>wor!and the radiator-and the sensor sits on to of the valve.
Danfoss has the widest rangeof radiatorvalveson the mar!et--and aim to cover all applications.
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H E A T I N G S O L U T I O N S
Thermostatic radiator valves control thetemperatureon each radiator throughout a,uilding.
This means than each room is individuallycontrolled to give the re%uired temeraturefor its use.
;y !eeing each room at the correcttemeraturewe imrove comfortfor its occuants.
Danfoss Thermostatic Radiator valves alsosave energy-.
and we have lots more on this later in themodule.
What is the enefits of using Radiator
Thermostats?
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H E A T I N G S O L U T I O N S
Ho! do "ommercial TRV#s $%erate?
The valve has a stem and a cone which are moved ,y the sensor to control &ow.
The sensor is *lled with gas and as the room temerature rises the gas e%ands .This ushes the valve stem down to reduce =ow.
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H E A T I N G S O L U T I O N S
Ho! do "ommercial TRV#s $%erate?
The temerature is set in the sensor using numbers which correspond totemperatures. 3or e%amlesetting the sensor to num,er ) gives a room temerature of &' ?.
2s the room temerature falls the sensor allows the valve stem to move u.This increases =ow and temerature to the room.
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H E A T I N G S O L U T I O N S
Ho! do "ommercial TRV#s $%erate?
Danfoss R2 sensors are uni%uein that they are the only sensors on the mar!et whichare gas lled.8as *lled sensors react %uic!erto changes in temerature in the room.
This reduces overheating and utilises more free heat.
2ll other manufacturers o@er only li"uid or wa% *lled heads.
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H E A T I N G S O L U T I O N S
;y using R2 sensors the user will have a more comfortableroom temerature--and the system will use less energy.
'ummary of Di(erent )edia *ypes+
Ho! &as 'illed (ensors "om%are !ith
)iuid 'illed
dvantage Disadvantage Comments Utili-ation of freeheat
.a" Aow rice Blow reaction. Betointmoves over time.Relatively shortlifetime. Highhysteresis.
(ld>fashionedtechnology
2ro%.
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H E A T I N G S O L U T I O N S
R2>&51&Remote Bensor
The ,asic !nowledge this module can give you will ma!e selecting the correctsensora simle rocess.Aet us tal! you through it-.
Bensors for Commercial systems come in fourmain tyes-
(electing the correct sensor
R2>&51';uilt>in Bensor
R2>&5&'Tamerroof Bensor
R2 7'E&Remote 2dFuster Bensor
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H E A T I N G S O L U T I O N S
Danfoss 123456The Built2in 'ensoris the mostcommonly used sensor forcommercial systems# such asoGces# in the U/.
This sensor features a loc!ing
and limitingfunction to reventthe temerature ,eing turned utoo high.
4t is connected to the valve usinga small allen !ey connection# thisma!es it hard to remove ,y un>
authorised users.
(electing the correct sensor
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H E A T I N G S O L U T I O N S
Danfoss 123636*amperproof 'ensorused inu,lic ,uildings and saces# suchas council oGces# doctorsurgeries and li,raries.
The sensor is set and loc!ed ,y
the installer to !ee a seci*ctemerature. The tamerroofloc! means no un>authorisedersons can change thetemerature.
The Danfoss R2&'&' tamerroof
sensor is recognisa,le as havingagrey shroud at its ,ase.
(electing the correct sensor
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H E A T I N G S O L U T I O N S
Danfoss 123453
/ow 'urface *emperature1adiators are commonly used incare homes# where the radiatorand valve are ,o%ed in to reventeole from scalding themselves.
4n this situation# the temeraturesensed using a standard headwould ,e arti*cially high.
To revent this incorrecttemerature reading# the DanfossR2&51& sensor
is connect to the valve ,y a &
metre Capillary *ube. This can,e lacedto sense the correct roomtemerature without givingaccessto the valve or iewor!.
(electing the correct sensor
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H E A T I N G S O L U T I O N S
1emote d7uster *hermostatsare used where the valve iscomletely ,o%ed in# and mostlyinstalled on 1adiant Panels$Radiant anels are often used inschools.
The sensor is a thermostat whichhas a caillary tu,e connecting itto the valve# allowing thetemerature to ,e set remotely.
The last digit in the name
indicates the length of thecaillary tu,e# i.e. the R2>7'E&has a & metre tu,e.
(electing the correct sensor
Danfoss 128693, 128698, and 12869:.
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H E A T I N G S O L U T I O N S
To select the correct valvetheinformation re"uired is as follows
2*he valve si-e
2*he angle pattern of thevalve
2*he pipe2wor! conguration
(electing the correct valve
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H E A T I N G S O L U T I O N S
Valves siIes ;=, ;
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H E A T I N G S O L U T I O N S
3or a &'''$ or &/w Radiator usingatemerature loss across the radiatorof 11?-we would draw a red line.
2llowing a valve ressure loss of 1'!JaKalso descri,ed as '.1 ;arL wewoulddraw a green line.
The two lines meet in the chart areaforD+17 valves K,lue linesL.
$e therefore re"uire a >= valve.
(electing the correct valve
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H E A T I N G S O L U T I O N S
Two tyes of ie con*guration e%istfor radiator systems
>one ie systems->two ie systems-
Di@erent tyes of valves are usedon the two di@erent con*gurations.
(electing the correct valve
32Pipe 'ystem 52Pipe 'ystem
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H E A T I N G S O L U T I O N S
2 two ie system is where the =ow andreturn ies are separate.
The =ow is attached to one connectionon the radiator# and the return the other.
This gives a parallelconnection,etween the&owand returnies.
3or two ie systems Danfoss o@er 12@Atye valves. These re"uire a lower=ow caacity than one>ie valves.
Two>ie systems are energy ecientand rovide ,etter temperaturecontrolto radiator systems.
(electing the correct valve
32Pipe 'ystem
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H E A T I N G S O L U T I O N S
2 one>ie system is where ,oth radiatorconnections are attached to thesame pipe run. 8iving the radiators aseriestye con*guration.
3or one>ie systems Danfoss o@er thehigh caacity 120 tye valves.
Danfoss are one of few radiator valvemanufacturers who still o@er valvesfor one>ie systems.
This is ,ecause the Danfoss 1valvesand sensors installed in one>ie sensorsare ,eginning to need relaced-
-)'>6' years after they were installedMM
(electing the correct valve
52Pipe 'ystem
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H E A T I N G S O L U T I O N S
;oth the 120and 12@A valves comein either angledor straightatterns.
This refers to the direction the water=ows through the valve.
The angledvalve feeds the water in andout of the radiator at a 46 angle$
(electing the correct valve
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H E A T I N G S O L U T I O N S
The 12@Aangled valves are availa,lewith either a hori-ontalor verticalmounting sensor.
2 hori-ontal sensoris mounted awayfrom the heat rovided ,y the radiatorwhich ensures we are measuring roomtemerature and not radiatortemerature.
ertical sensorssit closer to theradiator. This ma!es them a,le to *t incon*ned saces.
Danfoss recommend the use ofhoriIontal angled valves where ossi,le.
(electing the correct valve
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H E A T I N G S O L U T I O N S
'traight patternvalves feed the waterin and out of the radiator in a straightline.
;y having di@erent atterns we can giveinstallers as many otions as ossi,le toensure neat and easy valve connection.
(electing the correct valve
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H E A T I N G S O L U T I O N S
Use the following diagram to determine
which valve is re"uired.
(electing the correct valve
HoriIontal
Vertical
Btraight
2ngled
Btraight
2ngled
Two Jie
(ne Jie
Btart
Code)NOP'1)8''&1''QOP'1)8''&)''OP'1)8''&7''1OP'1)8''&
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H E A T I N G S O L U T I O N S
To get our Danfoss Randall Valve
Belection Chart#you can either call us on '67 1&1< 6''and as! for literature
Sou can also call us and sea! to ourtechnical heldes!# they would ,e a,leto hel you determine which valve you
need.
(r you can send us a re"uest via ourwe,sitewww.danfoss>randall.co.u! N service 9suort N How to contact us# select theliterature re"uest at the ,ottom of theage.
(electing the correct valve
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http://www.danfoss-randall.co.uk/http://www.danfoss-randall.co.uk/ -
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H E A T I N G S O L U T I O N S
/oc!2'hield valve$
The Aoc! Bhield valve is used to isolateand balancea radiator# and is locatedon the returnie connection.
Radiator +alancing
1/ /oc!2shield alve
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H E A T I N G S O L U T I O N S
/oc!2'hield valve$
;y turning the loc!>shield valve downwith an allen !ey# the ma"imum &owisreduced# hence ,alancing the radiator.
Radiator +alancing
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H E A T I N G S O L U T I O N S
;y ,alancing the radiators theyall get the correcttemerature-thus reventing the *rst radiatorin the system getting too muchheat, and the last radiatorsgetting too little heat.
4f you remem,er in our e%amlewe wanted an 11?temeratureloss across our radiator
$ell ,y ,alancing# using a loc!>shield# we can ensure the mostecient radiator temeratures.
Aoc!>shield valves are Danfossmodel+ 1/
*oo hotE
*oo coldE
Radiator +alancing
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H E A T I N G S O L U T I O N S
Danfoss loc!>shield valves havean otional drain2coc! adapterto drain the radiator systemwith.
This drain>coc! adater isDanfoss code+ 66;/658366
Drain-coc, ada%ter
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H E A T I N G S O L U T I O N S
+ow we have chosen theradiator valves to give ma%imumcomfortto our users-
-let us see how DanfossThermostatic Radiator Valves can
save energyM
Danfoss have studied the energyused when manual radiatorvalves arerelaced with thermostaticradiator valves.
(aving nergy
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H E A T I N G S O L U T I O N S
$hen using a manualKi.e. non>thermostaticL radiator valve# the=ow to the radiator is "edmanually K,y handL.
(aving nergy
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H E A T I N G S O L U T I O N S
;y using a *hermostatic Radiator Valve# the =ow of water varies# ,ased uon the
room temerature.This means the sensor reactsto the changes in that room temerature# caused ,ye%ternal factors such as the sun.
(aving nergy
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H E A T I N G S O L U T I O N S
;y using a Thermostatic Radiator Valve toreduce =ow#as the room temerature increases# we saveenergy.
Danfoss have found that ,y using athermostatic
radiator valve instead of a manual radiatorvalve#minimum energy savingsof 36Fcan ,eachieved.
Gnergy savingis not Fust a,out saving theplanet, its also a,out saving moneyonour heating billsM
(aving nergy
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H E A T I N G S O L U T I O N S
Sou have now comleted the DanfossTraining oduleUnderstanding *hermostatic 1adiatorsalves forCommercial pplications.
4d Fust li!e to highlight some !ey points
,efore we *nish.
'inal Revie!
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H E A T I N G S O L U T I O N S
Thermostatic radiator valves aredesigned to save energy and rovide
comfortto users.
'inal Revie!
Valves are designed for use in 5 or 3 pipecon*gurations.
$e use 12@Avalve for &>ie alications-and 120valves for 1>ie alications.
2s the room temerature changes#
the sensor reactsto !ee ourset temperature.
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H E A T I N G S O L U T I O N S
'inal Revie!
Danfoss o@er fourtyes of sensors
R2>&51&
Remote Bensor
R2>&51'
;uilt>in Bensor
R2>&5&'
Tamerroof Bensor
R2 7'E&
Remote 2dFuster Bensor
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H E A T I N G S O L U T I O N S
0as lledsensors react fasterthanli"uid *lled heads#
this saves energy,y using morefree2heat.
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Thermostatic valves are availa,le in angledorstraightattern.
Danfoss valves are availa,le in;=, H=
and 5= siIes$
They can ,e used on either copperor ironie>wor!.
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H E A T I N G S O L U T I O N S
To balanceour radiators we need an1/ loc!2shieldvalve.
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;y using thermostatic valves in lace ofmanual valveswe can save a minimum of 36F of thesystems energy$
;y using Danfoss you will have all
radiator applicationscovered.
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Congratulations for
completing your rst trainingmoduleE
Sou now have all the information re"uiredto selectand secify Danfoss thermostatic radiatorvalves.
odule & has a title of ;alancing Valvesfor Heating and Cooling Bystems
(nce you have comleted threemodulesyoucan aly to Danfoss Randall for yourContinuous Jrofessional DevelomentCerti*cate.
3or more information on Danfoss roductsorfor Danfoss>Randalls contact detailslease visit ourwe,site at
StartStart
'inal Revie!
http://www.danfoss-randall.co.uk/