Uniflair Chiller Training Module

8/19/2019 Uniflair Chiller Training Module

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BREC

Air-cooled water chillers

BREF

Air-cooled water chillers with free-cooling system

1602A - 1802A - 2202A - 2502A - 2802A

3202A - 3602A - 4202A - 4802A

R134a (400-1200 kW)


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BRE Range

High level performance

R134a Refrigerant

Do!le screw compressors

Electronic e"pansion valve

#nnovative fans and heat e"changers

$ree-cooling % #ntelligent $ree-cooling


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4'' - &''()

R41'A R134a

*rend+ refrigerant , compressors


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*otal E.ivalent )arming #mpact

Refrigerant emission dring the

/lifecycle0 of the nit

#ndirect emissions reslting from the

2 emissions dring energy

prodction Refrigerant TEWI

R22 1 5-367s R4'89

R4'8 2'32R134 1821 (-10%! R40"C)

R134a Refrigerant


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ptimi:ed do!le screw compressors

ompressors

1602A 1802A 2202A 2502A 2802A 3202A 3602A 4202A 4802A

3&() 4&() &1() &48() () 832() 48() 38() 1'4()


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ptimi:ed do!le screw compressors with

R134a

l!rication of the !earings

distri!tion of the oil

efficiencysemplicity

ompressors


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Economi:er


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Electrical ;anel

Electric !ars distri!tion A!sor!ed crrent ac.isition

;hase se.ence control


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=enerator

;rincipal line

>nit

=enerator

>nit

A

B

Do!le power spply

installation hillers

Relia!ility+

ontinos power spply

;rincipal ?ine


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Do!le power spply

installa:ione hillers

Relia!ility+

ontinos power spply


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;#D ?ogic to control the otlet water

temperatre

ontinos monitoring for the

operating parameters

7erification and control of the safety

intervals

#ntegrated ?A@ E"tensive B


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Advanced ontrol

;recision Relia!ility onnectivity

*ime

D e l t a *

BRE *raditional

T #it$&t#ater tank

T$er'a a

±1C 16

±1C 16 -2&6

±'3C 2&6


temperatre




intervals



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Advanced ontrol



temperatre




intervals



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temperatre




intervals



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#ntelligent free-cooling

Annal energy saving

ompared to traditional free-cooling+

p to 86

ompared to a traditional installation+

p to &'6


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;rimary pmp

Evaporator

$ree-cooling coil

$ree-cooling pmp

@on-retrn valve

$ree-cooling connections

#ntelligent free-cooling


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erie BRE


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erie BRE


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;rogram 7ersion

By pressing the (ey yo can see the version of the

control program !rnt in the $lash E;R


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Accessing the ;arameters


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erie BRE

)hen the nit is /#ere &t nt r&nning 3

fie! are a*tie n t$e &!er ter'ina i!/a

AF *ime and date 5only in nits featring a cloc( card9G

BF tlet water temperatreG

F ne of the following messages indicating what has switched

the nit off+

1F @,$$ !ttonG

2F Remote control G

3F pervision systemG

4F *imed switch-off - in nits with cloc( card - indicating what

time the ne"t restart is programmed forG

&F Atomatic nit inversion cycleGF et!ac( modeG

8F $orced switch-off s!se.ent to water flow alarmG

F $orced switch-off s!se.ent to water flow alarmF

(2%22 26.(7C ES+

Wa'er *&+% 7C 23.0

C

A

B

C

+o S'ar' &ni'

Press *n e

Warning % S'oe:

; Remo'e Con'ro5<

Warning % S'oe:

; Serisor <

Programme: S'o

Res'ar' a' (3%( "&

Warning % S'oe:

on S'an:; <

Programme: S'o

Press *n e

Warning % &ni'

in Se' Ba= 1o:e

Warning % S'oe:

; Wa'er ,5o> #5arm


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tats screen with the nit rnning

)hen the nit is r&nning t$e TAT CREE, a//ear! n t$e i!/a

featring active fields+

A.C&rrent ti'e 5only in nits featring a cloc( card9 a'ient

te'/erat&re.

B. F&n*tin! in /rgre!! t$e f#ing 'e!!age! are gien e/ening n t$e #rking *nitin!

?#@= HEA*#@= RE7ERI HEA*G

;>


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tats screen with the nit rnning

=. ini*ate! &nit>! !ae !tat&! #$i*$ *an e ne f t$e f#ing

:, if the nit was switched on !y the ser teminal

RE9:TE to a remote contactG7


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Reading and ;rogramming


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Hor-!

*'/nent!+ when the device in .estion e"ceeds the operating hors threshold indicated

the microprocessor reports the service re.est !y activating the alarm condition and sending

the LER7M message p on the main formF

*here are also two forms featring the nm!er of times the compressor starts 5with

the option of resetting the cont9F

*he forms give the nm!er of hors accmlated and operating thresholdsF *o edit limits

and,or reset the hor-meter yo mst call p the s!rotine in programming modeF

*he fnctions regard the following nit components+

1F ompressorsG

2F )ater circlation pmpsG3F ompressors starting nm!erG

4F ommand manal Defrost circitG


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Hor-


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Reading #npt and tpt tates

*his part of the software which can !e called p directly !y pressing the #, (ey allows to

chec( the state of the !oard0s inpts and otptsF

T$e *e! gien n t$e i!/a are t$e !a'e ne! &!e t ientif *'/nent! in t$e

&nit an in t$e reeant iterat&re (ee*tri*a an refrigerant ra#ing!).

=IITA+ I,


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A,A+:E I,RE sensors connected

to the !oardF

/C:e E/an!in Anag&e in/&t! (B1 B4)

pplies the readings of the sensors connected to the >pE e"pansion !oardF

B1 Rem ffset smmer setpoint

A,A+:E :T


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I,


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I,


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onfigring the nit

>nit0s configration mode is accessi!le !y (eeping pressed the ; programming (ey ntil yo

hear a short adi!le signal and then pressing the #, (eyF

nce yo have entered the password 5!y factory+ 1219 the relevant form is called p

comprising three options+ move the crsor vertically to the line yo are interested in sing the

D)@ (ey and then call p the forms !y pressing the E@*ER (eyF

;AR=WARE C:,FIRATI:,*he nit control program needs to !e LconfigredM iFeF adapted to the nit it is installed inF

Dring this stage yo mst define all elements ma(ing p the nit that the microprocessor

will !e re.ired to controlF *his operation is generally only re.ired when the controller is

installed actally on the nit in which case therefore it is performed at the factory dring final

testingF @onethelessF *nfig&ratin 'a e re&ire a! a re!&t f ater *$ange! 'ae t

t$e &nit

onse.ently forms concerning configration appear in English and are intended for se !y

service engineers onlyF


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=EICE C:,,ECTE= T: T;E ,IT

Allows to set+

set nit type depending on whether the nit in .estion isa+

- standard-version chiller

- chiller with condensation heat recovery

- chiller with free cooling

activate the heat recovery mode if incldedF

nly some of the following forms will !e displayed depending on the

type of nitF

IE A,= =EICE C:,FIRATI:,

Allows to set+

- the si:e of the nit- the type of compressors- the type of fans

onfigring the nit

fi i h i


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C:,FIRATI:, :F CREW C:9 :


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FA, RE+ATI:, - +:W ,:IE 9:=EBy ena!ling the low-noise mode the fan speed reglation is !ased

on a ramp of 3 stepsF *he creen on the left allows the parameters

related to the 2nd modlation stepF

onfigring the nit

fi i th it


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9AJI99


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fi i th it


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FREE-C::+I, ACTIATI:, WIT; ,IT I, TA,=-B?

*his creen allows the intelligent free-cooling management to !e

activatedF

A,TI-FREEE

*his creen gives the choice of activating the circlation pmp or

not throgh the free-cooling coils in anti-free:e operationF #f this

fnction is activated in the stand!y nit the $ pmp is switched

on as soon as the e"ternal temperatre falls !elow 1'CG it trns off

when it rises a!ove 3'CF

N.B.: nly a correct mi" of glycol ensres that the coils do not

free:e if the e"ternal temperatre falls !elow :ero+ the fnction

indicated cannot garantee the integrity of the coil a!ove all in

free:ing temperatresF

FREE-C::+I, I:+ATI:, A+Ecreen 8 allows operation of the water isolation valve of the $ree-

ooling circit to !e activatedF omplete opening is controlled !y

means of the limit switch or time following which the $ pmp is

activatedF

onfigring the nit

fi i th it


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RE+ATI:, :F T;E A9


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REA=I, RA,E RE+ATI:,

*his screen allows the reading range of the high pressre transdcer

to !e setF

REA=I, RA,E RE+ATI:,

*his screen allows the reading range of the low pressre transdcer to

!e setF

E,:R A=MT9E,T

*his screen and the following creens allow the temperatre sensors

which can !e fond in the nit to !e adQsted 5Lread valeM9 when

there is a difference !etween the vale measred !y the pro!e and the

actal temperatre measred !y a precision instrmentF

9:,IT:RI, :F T;E REFRIERA,T +:A=

*his screen allows the !-cooling etting to monitor the refrigerantload in the cooling circit to !e setF

onfigring the nit

onfigring the nit


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RE9:TE ETpE !oardF @e"t apply the '-1'7 signal referred

to the =@D terminal 5!oth terminals are located on the control card9F

*he :ero vale is adQsted atomatically sing the LHardware setpM

fnctionF

;EAT REC:ER?

creen allows the ma"imm condensation temperatre limit to !e

set a!ove that which is prevented !y the heat recoveryF

:


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BER ACTIATI:, TI9E

*his screen allows the ma"imm activation time of the !::er

activation when an alarm is active to !e setF

ETTI, T;E ACCE


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?* 7A?>EP9F

$ollowing this operation the controller mst !e reconfigred and

yo will need to adQst any setpoints that are to have a vale otherthan the defalt valeF

A+. sed to rn an atomatic procedre for detecting devices

connected to the controllerF *his operation is sefl when yo

want to add an option to the card replace a sensor or when the

display featres the P@M message instead of the temperatre

sensor0s readingF

onfigring the nit

Delay ettings


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Delay ettings

*his screen concerns initial transient !ehavior and gives yo the

option to set+

delay !efore the nit restarts after a power ct 5/;)ER @

DE?AI09 - it is re.ired to prevent simltaneos starts in mltiple

installationsG in ?A@-connected nits a progressive start se.ence

5nit 1 nit 2 9 is rn atomatically with &-second intervals!etween one nit and the ne"tF

initial period - from when the compressor starts - dring which the

low-pressre switch reading is disregarded 5/?;-*A* DE?AI09F #t

ena!les the compressor to start even in a harsh climateF

length of time !etween the nit switching on and control starting

5/*AR* *RA@F09 - this is the initial period deemed necessary to givethe control system time to sta!ili:eF Dring this period the $ water

flow-switch reading is also disregardedF *his allows the nit to start

withot generating the PLoss of Water Flow" alarm.

delay - from when the nit starts - !efore environmental condition

alarms are reported 5/* Al Delay09F

Delay ettings


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*his creen allows the anti-$&nting ti'e *n!tant t e !et t

ai e*e!!ie ifferen*e! in te'/erat&reF *he greater the heat

inertia of the water circit the greater this vale mst !e setF

*his creen allows the water f#-!#it*$ (F) /ara'eter! to !e

set+ the first parameter is the ac.isition delay for the signal issed

!y the flow-switch when the nit is started whilst the second

parameter is the length of the delay !efore the alarm if there is

one is reported after the pmp startsF ?astly the third parameter

5only displayed if there are two pmps9 is the rotation time forthe pmps0 operationF

*his creen allows the *'/re!!r ti'ing to !e set+minimm time !etween two starts for a single compressorGminimm time each compressor stays onGminimm time each compressor stays offGminimm time !etween two consective starts !y different

compressorsG

*his screen allows the start-p delay of the free-cooling pmp dring

opening of the water isolation valve to !e setF

Delay ettings


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Dring reglar operation all components the nit is fitted with are managed atomaticallyF

@onetheless t 'ake 'aintenan*e an aN&!ting #rk ea!ier r if t$ere i! an

e'ergen* individal components can !e switched on sing the manal override featreregardless of the control processF

#n particlar it is possi!le to+switch the nit on,off in manal modeGswitch the compressors on,offGswap the two pmps overG

switch on ,off the $ pmpGcontrol the ramp for the fans0 modlating controlF

T$e !afet ei*e! are a#a! a*tiate a! &ring 'an&a /eratin.


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; or D)@ (ey to change from atomatic

5P@oP9 to manal 5PIesP9 or vice versa and confirm

!y pressing the E@*ER (eyF

W$ie &!ing 9an&a :errie 'e t !tart ne r

're ei*e! t$e ae G9A,H #i e i!/ae in

t$e 'ain 'a!k.

ES7 ;arameters


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ES7 ;arameters

*he creens shown on the left allow the read only data and some

operating parameters of the electronic e"pansion valve on circit 1 to !e

displayedF

*he screens are the same for the valve on circit 2 !t it is necessary to

enter the screen dedicated to Lircit 2 7alvesM

ES7 ;arameters


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*his creen allows the type of electronic e"pansion valve to !e setF

Allows the sperheating vale to !e set in the varios operating

modesF

Allows the ;roportional =ain to !e set in the varios operating modesF

Allows the set point for the #ntegral *ime to !e set for different

operating modesF

Allows the set point of the Derivative time and the ma"imm sction

temperatre to !e setF

ES7 ;arameters

ES7 ;arameters


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Allows the ma"imm nm!er of opening steps and the set point ofthe netral !and for the sperheatingF

Allows the relationship in 6 of the power of the electronic

e"pansion valve and the cooling circit to !e set where it has

!een inserted in the varios operating modes descri!edF

*hese creens allow the limits of low sperheating to !e set+

integral time and temperatre in the varios operating modesF

ES7 ;arameters

ES7 ;arameters


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Allows the setpoints of the


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Remote ontrol and ?A@ ettings

As an alternative the nit can !e started and stopped !y means of+

1F a remote contact 5or Premote controlP9G

2F a Pspervision systemP connected to the microprocessor with a serial ca!leF

*he microprocessor nonetheless retains control of the nit0s resorcesF

:,D:FF IA RE9:TE C:,TACT

the closing of a remote contact is responsi!le for starting the nitF *he @FF contact is

voltage-free and connected to the master card 5see wiring diagram9F #n nits with a

standard control programme digital inpt 1 is the one specifically sed for the on,off contactF


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*his creen allows to esta!lish whether the nit is slaved to a

remote controlF


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ETTI, TRA,9II:,


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*his creen concerns parameters for atomatic rotation !etween

rnning nits and stand!y nitsF 7ia said form yo can determine+

whether to activate this management featre 5Ies,@o9F )henatomatic rotation is ena!led yo have to press the @,$$ (ey

on the nit with the lowest address in the networ(F

atomatic cycle time !etween one inversion and the ne"t

5/I?E *#


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*his creen which is only seen if the local networ( is

configred allows the temperatre reglation to !e set in three

different ways+

#ndependently+ the nit independently controls the water

temperatre reglationG

onnected+ the nit control carries ot the water temperatre

control !y calclating the average temperatre of the nits which

are operatingG

ascading+ the control carries ot an off-set on the reglation set

point according to the nits connected in the networ( therefore

allowing the nits to !e switched on in sccessionF Each nit

maintains its own reglation timingsF




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*his screen which is only displayed if the local area networ( is

configred allows the nit operation to !e managed with the mean

temperatre vale measred in the room or with the PlocalP valemeasred Qst !y the sensor inside the nit+nit control is !ased on temperatre and hmidity

vales detected !y sensors on the actal air-conditionerF


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)or(ing ;arameters


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C::+I, ET


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A+AR9 T;RE;:+=

Allows the inlet water temperatre alarm thresholds to !e setF#f the nit is in its heat pmp version the second line reads

L)ater #nlet mmer *emperatreM to distingish smmer

mode thresholds from winter mode ones which can !e set on

the last creenF

g


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?ow ;ower


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+:W


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#f the microprocessor featres the optional cloc( card the *A*> creen displays the date

crrent time and day of the wee(F *he following actions can also !e associated with a

particlar time+

nit starting and stopping !ased on a timer programG

logging of alarm eventsF

rrent time and date are set and time !ands programmed !y means of the following forms+

C+:CL-CA+E,=AR ET


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ETTI, TI9E BA,=

>sing this device yo can set times 5time !ands9 for atomatic

nit starting and stopping achieving+ p to 3 on-off cycles a day each with a start and stop timeG

a wee(ly cycle with different daily cycles split into wee(days @

5defalt setting from form will read LH>RMF

By sing the creen which follow yo can program time cycles -

featring a start time 5@9 and a stop time 5$$9 - for normal

days 5@9 atrdays and pre-holidays 5;9 and ndays and

holidays 5H9F

)ith the nit idle the display reads L>@#* )#*HED $$ T

RE*AR* A* M with the time and day of the wee( programmed for

the ne"t startF

#f yo enter ''+'' in !oth the @ and $$ fields the cycle is

disregardedF

loc( T alendar T *ime Bands


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C+AIFICATI:, :F =A? :F T;E WEEL

*his is atomatic thogh it can !e edited starting from the creen

on the leftG the creen is called p when the time !and device isactivated 5PE@AB?E+P IEF9

*he crrent day is identified - for the prpose of time !and

programming - as+

- @+ normal or wee( dayG

- ;+ atrday or half-dayG

- $+ nday or holidayG

loc( T alendar T *ime Bands


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WEEL=A? nless otherwise programmed days are classified in the

microprocessor0s memory as follows+ wee(days 5@9 all days dring the wee( from


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*he following section 5P@>?*#@= A?AR


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ACTIE A+AR9

;ressing the (ey silences the alarm !::er and the description of the alarm is shown on

the displayF

#f the case of the alarm has !een eliminated the last alarm message can !e reset

$ing #n t$e ke fr a fe# !e*n!. #f the case of the alarm has not !een

eliminated the adi!le !::er warning is switched on againF

A+AR9 +: EKE,CE

*o !e a!le to reconstrct the se.ence in which alarms occrred the microprocessor (eeps

the last 1'' events in its memoryF All logged alarms can !e conslted in series !y pressing

the (ey while yo are on the *A*> creenF

Alarms


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)ater flow alarmF #t is ena!led in all chillers withot any on-!oard

pmp and it is activated when the flow switch opensF *he nit is

stoppedF

)ater flow alarmF #t is ena!led in all chillers with on-!oard pmps

and it is activated when the flow switch opensF #t can !e de to a

malfnctioning of the flow switch or the pmpF *he nit is stoppedF

)arning which inform a!ot a pro!a!le malfnctioning of the flow

switchF *his alarm appears when the nit starts 5iFeF when the waterflow rate reaches its nominal vale9 and the flow switch does still

remain closedF )hen the nit is off and there is not any water flow

rate the flow switch mst !e openG when the nit starts and the

contact is fond to !e closed that alarm appears informing there is

something wrong on the water sideF #t doesn0t stop the nitF

*he reasons for this alarm cold !e two+

$alty water flow switch with its contact permanently closed 5in

order to chec( this point it is enogh to stop the pmp and chec( if

the contact is open 5refer to the electrical drawing and the #,

mas(s on the controller9FE"ternal pmps not activated !y the nit0s controllerF

#5arm

"oss of Wa'er ,5o>

Ce= H:ra5i

Ciri'

#5arm

,5o>s>i' ,ai5re

Ce= ,n'iona5i'/E5'r.Conne'ions

#5arm

"oss *f >a'er ,5o>

Ce= Pm/H:ra5i

Ciri'

Alarms


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9AI, Pressre

Ce= ,ri:ge Ciri'

Refrigeran' Carge

Alarms


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#5arm

Cir.( #n'ifree!e

Ce= Ea.C5eaning

/Refrigeran' Carge

Pre#5arm

Cir.( #n'ifree!e

Ce= Ea.C5eaning

/Refrigeran' Carge

Prea5arm

Cir. ( Hig Press.

Ce= ,ri:ge Ciri'

#n:/*r Con:enser

#5arm

Cir. ( Hig Press.

Ce= ,ri:ge Ciri'

#n:/*r Con:enser

ircit 1 High-pressre pre-alertF *his re-sets atomatically after '

secondsF #f it is activated for 4 times in a row within the period of one

hor the alarm is activated 5it is necessary to reset it from the(ey!oard9F Reporting the same for ircit 2F

High pressre alarm for circit 1 for the intervention of the high

pressre switch with manal re-setF Reporting the same for ircit 2F


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Uniflair Chiller Training Module

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Transcript of Uniflair Chiller Training Module