Full Gauge Controls MICROSOL II plus User Manual

MICROSOL II plus

DIFFERENTIAL TEMPERATURE CONTROLLER

FOR SOLAR HEATING WITH TWO

SOLAR BACKING

Ver. 02

UL-Underwriters Laboratories

MCSOL2V02-05T-10793

1.DESCRIPTION

Differential temperature controller for automation of solar heating systems,

MICROSOL II plus

becomes simple the management of the temperature of the water in the thermal reservoirs and
swimmingpools,use thesolarenergybetter..
Itactsinthecommand ofthewatercirculationpumpthrough the differentialoftemperaturebetweenthe
solarcollectors and the thermal reservoir orswimmingpool.It is a dedicated instrument thathasall its
parametersofconfiguration protectedbyaccesscode.
It makes use of two solar backings outputs, that can be electric, gas, diesel or also to program the
filteringoftheswimmingpool. solar backing1istiedwithan schedule thatallowstheconfigurationofup
to four daily events for each day of the week and solar backing 2 can optionally be configured for
functioninginset withtheschedule.
Ithasfunctions that prevent the water freezing and overheating inthetubingsanda clock with internal
batterytoguarantee itssynchronism,evenintheenergylack,permanyyears.Theinstrument hasserial
communicationforconnection withtheSITRAD viaInternet.

®

Productcomplieswith CE(EuropeanUnion)and ULInc.(United StatesandCanada).

2.APPLICATION

•Solarheating pumpedsystems

3.TECHNICAL SPECIFICATIONS

-Powersupply:

-Controltemperature:

115or 230Vac±10%(50/60Hz)

-50to105°

-58to221 ºF

-Resolution:

0.1°Cbetween-10 and100°Cand1°C intherestof therange
1°Fbetween-58 and221°F

-Dimensions:

-Operatingtemperature:

-Operatinghumidity:

-Sensors:

71x28 x71mm

0to50°C /32to122°F

10to90% RH(withoutcondensation)
S1-Sensor ofthecollectors
S2-Sensor oftheReservoir/Pool
S3-Sensorfor controlofsolarbackings

-Controloutputs:

PUMP-Waterpumporsolenoid -5(3)A/ 250Vac1/8HP
AUX1-solar backing1-5(3)A/250Vac1/8HP
AUX2-solar backing2-5(3)A/250Vac1/8HP

CLASSIFICATIONACCORDINGTOIEC60730-2-9STANDARD:

-Temperaturelimitof theinstallationsurface:

-Typeofconstruction:

-Automaticaction:

-Controlof pollution:

-Impulsevoltage:

Built-inelectroniccontroller

Type1

Level2

1,5kV

-Temperatureforthe testofspherepressure:

-Insulation:

ClassII

50°C

75°Cand125°C

4.CONFIGURATIONS

4.1- Toenter into the functionsmenu

Press and simultaneously for two seconds until it appears , then releasing it. When
appears press (tap) and enter thecode (123) through keys and .Toconfirm,
pressthekey .Throughthekeys and accessthe otherfunctionsandproceedin thesame
manner to adjust them. Toleavethe menu andreturn to normal operations, press (longhit) until

SET

SET

SET

appears.

4.2- Functions

Accesscodeentry
Advancedconfigurationfunctions
Eventsplanneroperating mode
Schedulinginthe eventsplanner
Adjustmentofthe clockandtheday oftheweek

4.2.1- Parameters table

Fun

Indication ofthepreferentialtemperature
Differentialforturningonthewatercirculation pump
Differentialforturningoffthewater circulation pump
Minimum timeforthepumpoff
Temperatureofthe antifreeze for sensor 1

to turnthewatercirculationpumpon
Overheat temperatureforsensor1

to turnthewatercirculationpumpoff
Overheated hysteresisforsensor1

for turningthewatercirculationpumpbackon
Overheat temperatureforsensor2

to turnthewatercirculationpumpoff
Overheated hysteresisforsensor2

for turningthewatercirculationpumpbackon
Hysteresis ofthesolarbacking1operation

Description

CELSIUS

Unit

Max

Min

-

1.0

1.0
0

3.0

0.0

0.1

0.0

0.1

0.1

Standard Standard

-

­°C

20.0
°C

20.0

sec.

999

°C

10.0

°C

99.9

°C

20.0

°C

99.9

°C

20.0

°C

20.0

99.9

99.9

FAHRENHEIT

Unid

Max

Min

-

­2

36

8.0
2

36

4.0
0

999

0

38

50

3.0

32

212

1

36

1.0

212

32

36

1

1.0

36

1

1.0

-

-

­14

°F

7

°F

0

sec.

38

°F

212

°F

1

°F

212

°F

1

°F

1

°F

Minimum setpointofthesolarbacking1operation
Maximum setpointofthesolarbacking1operation
Manual activationtimeforsolarbacking1
Solar backing2operationmode
Hysteresis ofthesolarbacking2operation
Minimum setpointofthesolarbacking2operation
Maximum setpointofthesolarbacking2operation
Cyclical timertimeon
Cyclical timertimeoff
Method forlinkingthesolarbackingstothe events schedule
Indication offsetforthetemperatureofthe sensor 1
Indication offsetforthetemperatureofthe sensor 2
Indication offsetforthetemperatureofthe sensor 3
Address oftheinstrumentontheRS-485network

-50.0

-50.0

0.1

-50.0

-50.0

-5.0

-5.0

-5.0

-50.0

221

°C

105.0
°C

105.0

min.

999

0

5

0

°C

20.0
°C

105.0
°C

105.0

min.

999

1

min.

999

1

3

0

°C

5.0
°C

5.0
°C

5.0

247

1

-58

105.0

221

-58

0

999

0

0

1.0

-50.0

105.0

0.0

0.0

0.0

0
1

221

-58
221

-58

1

999

1

1

999

1

0

0

-9

-9

-9

1

247

1

-

-

-

-58

°F

221

°F

0

min.

0

-

5

1

°F

36

-58

°F

221

°F

1

min.

1

min.

0

-

3

0

°F

9

0

°F

9

0

°F

9

1

-

4.2.2 - Parameters description

Indicationofthepreferential temperature

Thisfunctionallowsthe preferentialtemperatureindicationtobe configured.Youmay choosebetween:

temperatureinthesensor 1
temperatureinthesensor 2
temperatureinthesensor 3
differentialtemperature(S1-S2)

Differentialforturningon thewatercirculationpump

Thisfunctionallowstheadjustmentofthedifferentialtemperature(S1-S2)to activate the water circulation
pump. As the solar collectors receive energy, the temperature in sensor S1 increases. When this
temperatureisatavalueestablishedasbeing above the temperature ofsensorS2,thepumpisturnedon
andcirculatesunderthe heatedwater,storingit inthereservoir,for example.

Differentialforturningoff thewatercirculationpump

Thisfunctionallows the adjustment of the differentialtemperature(S1-S2)toturn off the water circulation
pump. With the pump on, the hot water circulates below and cools upwards. After which time, the
temperaturedifferencebetweenS1and S2 tendstodecrease.Whenthisdifferencefalls to anestablished
level,thepumpis turnedoffandthewater circulationstops.

Minimumtimeforthe pumpoff

Thisfunctionallowsthe adjustmentoftheminimumtimeoff thatthepumpshouldhave beforebeingturned
on again. This option avoids the pump from being turned on and off in short periods of time, which thus
increasestheusefullifethereof.Thisfunctionalsodefinesthe delay in the pump's activation onturningon
thecontroller.

Temperatureof the antifreezeforsensor1 to turnthewatercirculationpump on

Thisfunctionallowsadjustmenttothetemperatureforformingice in the collectors. When thetemperature
in the collectors (sensor 1) are very low (Ex.: winter nights), the pump is turned on from time to time, to
prevent the water from freezing in the pipes and damaging them. The hysteresis is set at 2°C/4°F.To
deactivatethisfunctiondecrease thevalueuntilthemessage appearsinthedisplay.

Overheattemperatureforsensor 1toturnthewater circulationpumpoff

This function allows the adjustment of the overheating temperature of the collectors, to turn off the water
circulation pump. When the temperature in the collectors (sensor 1) is above an established value, the
pumpisturnedofftokeeptheoverheatedwaterfromcirculatingthroughthepipesanddamagingthem(if
PVCpipesareused).

Overheatinghysteresisofsensor 1toreconnectthewater circulationpump

Adjustment of the hysteresis of the overheated temperature of sensor 1 to allow the water pump to be
turnedonagain.

Overheattemperaturefor sensor2toturn thewatercirculationpump off

This function allows the adjustment of the overheating temperature of the pool to turn the water
circulationpumpoff, avoidingthermaldiscomfort.

Overheatedhysteresisfor sensor2forturning thewatercirculationpump backon

Adjustmentofthehysteresisoftheoverheated temperature of sensor 2 toallowthewaterpumptobe
turnedonagain.

Hysteresisofthe solarbacking1operation

Adjustmentofthe hysteresisfortheactivation temperaturesetpointforsolar backing1.

Minimumsetpointof thesolarbacking1operation

Lower limit, the purpose of which is to avoid the accidental regulation of temperatures far below the
setpointofsolar backing1.

Maximumsetpointof thesolarbacking1 operation

Upper limit, the purpose of which is to avoid the accidental regulation of temperatures far above the
setpointofsolar backing1.

Manualactivationtime forsolarbacking1

Timethatsolar backing 1 is activewhenit is activated manually. Once this period oftime is over,solar
backing1returns tofunctionautomatically.

Operationmodefor solarbacking2

Thisfunctionenables configuringthemodeof operationofthesolar backing2output.Themodesare:

“0”-thermostatforrefrigeration
“1”-thermostatforheating
“2”-thermostatforrefrigeration hitchedtotheevent schedule
“3”-thermostatforheating hitchedtotheevent schedule
“4”-cyclictimerwith initialstateon
“5”-cyclictimerwith initialstateonhitched totheeventschedule

Hysteresisofthe solarbacking2operation

Adjustmentofthe hysteresisfortheactivation temperaturesetpointforsolar backing2.

Minimumsetpointof thesolarbacking2 operation

Lower limit, the purpose of which is to avoid the accidental regulation of temperatures far below the
setpointofsolar backing2.

Maximumsetpointof thesolarbacking2 operation

Upper limit, the purpose of which is to avoid the accidental regulation of temperatures far above the
setpointofsolar backing2.

Cyclicaltimertime on

Thisfunctionenables settingthetimeduring whichthecyclictimer willkeepitsoutput on.

Cyclicaltimertime off

Thisfunctionenables settingthetimeduring whichthecyclictimer willkeepitsoutput off.

Methodforlinking thesolarbackingsto theeventsschedule

Thisfunctionenablessettingtowhichofthe 4dailyeventseachsolarbackingoutputwillbe hitched.The
possiblemodesare:

“0”-Aux1hitchedtoevents1,2,3,4 “2”- Aux1hitchedtoevents1,2

Aux2hitched toevents1,2,3,4 Aux2hitched toevents3,4

“1”-Aux1hitchedtoevent 1 “3”- Aux1hitchedtoevents1,2,3

Aux2hitched toevents2,3,4 Aux2hitched toevent 4

Indicationoffsetfor thetemperatureofthe sensor1

Thisfunctionallows theindicationoffsetforthetemperatureofsensor1tobeadjusted(collectors).

Indicationoffsetforthe temperatureofthesensor 2

Thisfunctionallowsthe adjustmentoftheindication offsetforthetemperatureofsensor2(reservoirs/pool).

Sensor3temperaturedisplay offset3

Thisfunctionallowsthe indicationoffsetforthe temperatureofsensor3tobeadjusted(solarbackings).

Addressoftheinstrument onthenetworkRS-485

Addressoftheinstrument inthenetworkfor thecommunicationwiththe software.
Remarks:inasingle network,therecannotbe morethanoneinstrumentwith thesameaddress.

IMPORTANT:

function .Assuch, does not allow invalid adjustments to be madein order to
guaranteeitsperfectfunctioning.

(*)The value adjustedinfunction should beobligatorilygreaterthanwhatis adjusted in

MICROSOL II plus

SITRAD

®

4.2.3 - Eventsscheduleoperating mode

Inthisoption,you canchoosehowthe eventsplannerwilloperate.

Weeklyprogramming

week.

Programming for business days

businessdays(MondaythroughFriday),andallowstheprogrammingofdifferent events for Saturday
andSunday .

Dailyprogramming

week.

-Inthismode,theinstrument can configure upto4eventsforeverydayof the

- In this mode, the instrument keeps the events the same for

-Inthismode,the instrument keeps theeventsthesameforallof the daysofthe

4.2.4- Programmingof the events schedule

Inthisoption,you canenterthevalues forthetimeperiodsfor eachevent.Theentryofthedatadepends
ontheoperatingmode configured.Youcan configure uptofoureventsfor each day.Foreachevent, the
startandend timeareconfiguredthrough theoptions upto , where:

Starttimefor thefirstevent
Endtimefor thefirstevent

Starttimefor the4ºevent
Endtimefor the4ºevent

Ifyoudonotneed to usethefourevents,youcan configure ittobedeactivated,andallyou havetodois
increase the off time ( for example) until the indication appears. It is also possible to
configureaneventtooverlap that itbeginsinonedayandit finishes intheother,andforthatyoushould
increasetheofftimeuntiltheoption appearsandadjustaneventforthenextdaytostartat00h
and00min.According to the operating mode configured, the following schedulingpossibilities may be
presented.

4.2.5 - Adjustmentof the currenttimeand day of the week

Pressthekey untilthe message appearsinthe visor.

SET

Hitkey .Thesettingswillappearinthefollowingorder:

HOURS MINUTES DAYOFTHEWEEK

Ex.:12h43min- Friday

Hours
Minutes
Dayofthe week

5.FUNCTIONS WHIT FACILITATEDACCESS

5.1- Visualize othertemperatures

To alternate between viewing the temperature of sensor 1, sensor 2, sensor 3 or the temperature
differencebetweensensor1 and2(differentialtemperature),press until thedesiredtemperatureis
showninthe display:

temperatureinthe sensor1
temperatureinthe sensor2
temperatureinthe sensor3
differentialtemperature(S1-S2)

Thetemperatureselectedwillbeshowninthedisplayfor fifteen seconds, and after that periodoftimehas
ended,thepreferentialindication willbeshownagain(as adjustedintheparameter ).

5.2- Visualize thecurrent time

Quickly pressing thekey , you can visualize the time set in the controller, the current time will be

SET

shown,followedby theminutesandthen thedayofthe week.

Ex.:12h43min- Friday

Hours
Minutes
Dayoftheweek

minimum and5.3 - Visualize maximum temperatures

Pressingthekey ,youcanvisualize the maximumandminimumtemperaturesforeach sensor,aswell
asthe minimum and maximumtemperaturedifferential. On pressing key (shorttouch), the message
will be shown showing the temperature of sensor 1 and soon after its minimum and maximum
temperatures,andthenthetemperaturesofsensor2( ),ofsensor3( )andthedifferential
().
Ifkey remainspressed,the values shall be restarted and the message shallbeshownon the
display.

5.4 - Set the operating tempera tures of the solar backings
(SETPOINTS)

Pressingthekey fortwosecondsmay adjusttheoperatingtemperatureforsolar backing 1andsolar
backing 2, as well as the overheating temperature for sensor 2 (reservoir/pool). A message will be
displayed ,adjusttheoperatingtemperature forsolarbacking1using keys e ,press
toconfirm.Thenthemessage willbedisplayed,adjusttheoperatingtemperatureforsolarbacking
2,pursuanttowhatisdescribedabove.After pressingthekey , the message willbedisplayed
toadjusttheoverheated temperatureforsensor2.

SET

SET

SET

5.5 - Manualactivation of solar backing 1

Pressing the key for ten seconds manually activates the output for solar backing 1. This will be
deactivated after the time adjusted in the function .lapses. By pressing key again for 10
seconds,themanual activationisdisabled,and solarbacking1resumes automaticoperation.
Todeactivatethemanualactivation, allyouhaveto doisconfigurefunction withthevalue“ 000”.

5.6- Manual activation of the watercirculationpump

By pressing key for 10 seconds, one can choose the mode of operation of the water circulation
pump.Afterpressing the key,themessage willbedisplayedandtheuser may thenchoosefromthe
optionslistedbelow,usingkeys and :