microsol ii plus - full gauge · differential temperature controller for solar heating with two...

DIFFERENTIAL TEMPERATURE CONTROLLER

FOR SOLAR HEATING WITH TWO

SOLAR BACKING

Ver. 02

MICROSOL II plus

MC

SO

L2

V0

2-0

5T

-10

79

3

UL-Underwriters Laboratories

1. DESCRIPTION

Differential temperature controller for automation of solar heating systems,

becomes simple the management of the temperature of the water in the thermal reservoirs and

swimming pools, use the solar energy better..

It acts in the command of the water circulation pump through the differential of temperature between the

solar collectors and the thermal reservoir or swimming pool. It is a dedicated instrument that has all its

parameters of configuration protected by access code.

It makes use of two solar backings outputs, that can be electric, gas, diesel or also to program the

filtering of the swimming pool. solar backing 1 is tied with an schedule that allows the configuration of up

to four daily events for each day of the week and solar backing 2 can optionally be configured for

functioning in set with the schedule.

It has functions that prevent the water freezing and overheating in the tubings and a clock with internal

battery to guarantee its synchronism, even in the energy lack, per many years. The instrument has serial

communication for connection with the SITRAD via Internet.

Product complies with CE (European Union) and ULInc. (United States and Canada).

• Solar heating pumped systems

MICROSOL II plus

®

2. APPLICATION

3. TECHNICAL SPECIFICATIONS

- Power supply:

- Control temperature:

- Resolution:

- Dimensions:

- Operating temperature:

- Operating humidity:

- Sensors:

- Control outputs:

CLASSIFICATIONACCORDING TO IEC60730-2-9 STANDARD:

- Temperature limit of the installation surface:

- Type of construction:

-Automatic action:

115 or 230Vac ± 10% (50/60Hz)

-50 to 105°

-58 to 221 ºF

0.1°C between -10 and 100°C and 1°C in the rest of the range

1°F between -58 and 221°F

71 x 28 x 71mm

0 to 50°C / 32 to 122°F

10 to 90% RH (without condensation)

S1 - Sensor of the collectors

S2 - Sensor of the Reservoir/Pool

S3 -Sensor for control of solar backings

PUMP - Water pump or solenoid - 5(3)A/ 250Vac 1/8HP

AUX1 - solar backing 1 - 5(3)A/ 250Vac 1/8HP

AUX2 - solar backing 2 - 5(3)A/ 250Vac 1/8HP

50°C

Built-in electronic controller

Type 1

- Control of pollution:

- Impulse voltage:

- Temperature for the test of sphere pressure:

- Insulation:

Level 2

1,5kV

75°C and 125°C

Class II

Press and simultaneously for two seconds until it appears , then releasing it. When

appears press (tap) and enter the code (123) through keys and . To confirm,

press the key . Through the keys and access the other functions and proceed in the same

manner to adjust them. To leave the menu and return to normal operations, press (long hit) until

appears.

Access code entry

Advanced configuration functions

Events planner operating mode

Scheduling in the events planner

Adjustment of the clock and the day of the week

4. CONFIGURATIONS

4.1 - To enter into the functions menu

4.2 - Functions

SET

SET

SET

4.2.1 - Parameters table

Description Min Max Unit

CELSIUS

Fun Standard StandardMin Max Unid

FAHRENHEIT

-

1.0

1.0

0

3.0

0.0

0.1

0.0

0.1

0.1

-

20.0

20.0

999

10.0

99.9

20.0

99.9

20.0

20.0

-

°C

°C

sec.

°C

°C

°C

°C

°C

°C

-

8.0

4.0

0

3.0

99.9

99.9

1.0

1.0

1.0

-

°F

°F

sec.

°F

°F

°F

°F

°F

°F

-

36

36

999

50

212

36

212

36

36

-

2

2

0

38

32

32

1

1

1

-

14

7

0

38

212

212

1

1

1

Indication of the preferential temperature

Differential for turning on the water circulation pump

Differential for turning off the water circulation pump

Minimum time for the pump off

Temperature of the antifreeze for sensor 1

to turn the water circulation pump on

Overheat temperature for sensor 1

to turn the water circulation pump off

Overheated hysteresis for sensor 1

for turning the water circulation pump back on

Overheat temperature for sensor 2

to turn the water circulation pump off

Overheated hysteresis for sensor 2

for turning the water circulation pump back on

Hysteresis of the solar backing 1 operation

Minimum setpoint of the solar backing 1 operation

Maximum setpoint of the solar backing 1 operation

Manual activation time for solar backing 1

Solar backing 2 operation mode




Cyclical timer time on

Cyclical timer time off

Method for linking the solar backings to the events schedule

Indication offset for the temperature of the sensor 1



Address of the instrument on the RS-485 network

-50.0

-50.0

0

0

0.1

-50.0

-50.0

1

1

0

-5.0

-5.0

-5.0

1

105.0

105.0

999

5

20.0

105.0

105.0

999

999

3

5.0

5.0

5.0

247

°C

°C

min.

-

°C

°C

°C

min.

min.

-

°C

°C

°C

-

-58

-58

0

0

1

-58

-58

1

1

0

-9

-9

-9

1

221

221

999

5

36

221

221

999

999

3

9

9

9

247

°F

°F

min.

-

°F

°F

°F

min.

min.

-

°F

°F

°F

-

-58

1

0

0

0

0

1

221

0

0

1

-58

221

1

-50.0

1

0

0.0

0.0

0.0

1

105.0

0

0

1.0

-50.0

105.0

1

4.2.2 - Parameters description

This function allows the preferential temperature indication to be configured. You may choose between:

temperature in the sensor 1



differential temperature (S1-S2)

This function allows the adjustment of the differential temperature (S1-S2) to activate the water circulation

pump. As the solar collectors receive energy, the temperature in sensor S1 increases. When this

temperature is at a value established as being above the temperature of sensor S2, the pump is turned on

and circulates under the heated water, storing it in the reservoir, for example.

This function allows the adjustment of the differential temperature (S1-S2) to turn off the water circulation

pump. With the pump on, the hot water circulates below and cools upwards. After which time, the

temperature difference between S1 and S2 tends to decrease. When this difference falls to an established

level, the pump is turned off and the water circulation stops.

Indication of the preferential temperature

Differential for turning on the water circulation pump

Differential for turning off the water circulation pump

This function allows the adjustment of the minimum time off that the pump should have before being turned

on again. This option avoids the pump from being turned on and off in short periods of time, which thus

increases the useful life thereof. This function also defines the delay in the pump's activation on turning on

the controller.

This function allows adjustment to the temperature for forming ice in the collectors. When the temperature

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

deactivate this function decrease the value until the message appears in the display.

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

pump is turned off to keep the overheated water from circulating through the pipes and damaging them (if

PVC pipes are used).

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

turned on again.

Minimum time for the pump off

Temperature of the antifreeze for sensor 1 to turn the water circulation pump on

Overheat temperature for sensor 1 to turn the water circulation pump off

Overheating hysteresis of sensor 1 to reconnect the water circulation pump

Overheat temperature for sensor 2 to turn the water circulation pump off

Overheated hysteresis for sensor 2 for turning the water circulation pump back on

Hysteresis of the solar backing1 operation

Minimum setpoint of the solar backing1 operation


This function allows the adjustment of the overheating temperature of the pool to turn the water

circulation pump off, avoiding thermal discomfort.

Adjustment of the hysteresis of the overheated temperature of sensor 2 to allow the water pump to be

turned on again.

Adjustment of the hysteresis for the activation temperature setpoint for solar backing1.

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

setpoint of solar backing1.

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

setpoint of solar backing 1.

Time that solar backing 1 is active when it is activated manually. Once this period of time is over, solar

backing 1 returns to function automatically.

This function enables configuring the mode of operation of the solar backing 2 output. The modes are:

“ 0 ” - thermostat for refrigeration

“ 1 ” - thermostat for heating

“ 2 ” - thermostat for refrigeration hitched to the event schedule

“ 3 ” - thermostat for heating hitched to the event schedule

“ 4 ” - cyclic timer with initial state on

“ 5 ” - cyclic timer with initial state on hitched to the event schedule

Adjustment of the hysteresis for the activation temperature setpoint for solar backing 2.

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


Manual activation time for solar backing 1

Operation mode for solar backing 2



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


This function enables setting the time during which the cyclic timer will keep its output on.

This function enables setting the time during which the cyclic timer will keep its output off.

This function enables setting to which of the 4 daily events each solar backing output will be hitched. The

possible modes are:

“ 0 ” - Aux 1 hitched to events 1,2,3,4 “ 2 ” - Aux 1 hitched to events 1,2

Aux 2 hitched to events 1,2,3,4 Aux 2 hitched to events 3,4

“ 1 ” - Aux 1 hitched to event 1 “ 3 ” - Aux 1 hitched to events 1,2,3

Aux 2 hitched to events 2,3,4 Aux 2 hitched to event 4

This function allows the indication offset for the temperature of sensor 1 to be adjusted (collectors).


Cyclical timer time on

Cyclical timer time off

Method for linking the solar backings to the events schedule


This function allows the adjustment of the indication offset for the temperature of sensor 2 (reservoirs/pool).

This function allows the indication offset for the temperature of sensor 3 to be adjusted (solar backings).

Address of the instrument in the network for the communication with the software .Remarks: in a single network, there cannot be more than one instrument with the same address.

( * ) The value adjusted in function should be obligatorily greater than what is adjusted infunction . As such, does not allow invalid adjustments to be made in order toguarantee its perfect functioning.

In this option, you can choose how the events planner will operate.- In this mode, the instrument can configure up to 4 events for every day of the

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

business days (Monday through Friday), and allows the programming of different events for Saturdayand Sunday.

- In this mode, the instrument keeps the events the same for all of the days of theweek.


Sensor 3 temperature display offset 3

Address of the instrument on the network RS-485

IMPORTANT:

Weekly programming

Programming for business days

Daily programming

SITRAD®

MICROSOL II plus

4.2.3 - Events schedule operating mode

4.2.4 - Programming of the events schedule

In this option, you can enter the values for the time periods for each event. The entry of the data depends

on the operating mode configured. You can configure up to four events for each day. For each event, the

start and end time are configured through the options up to , where:

Start time for the first event

End time for the first event

Start time for the 4º event

End time for the 4º event

If you do not need to use the four events, you can configure it to be deactivated, and all you have to do is

increase the off time ( for example) until the indication appears. It is also possible to

configure an event to overlap that it begins in one day and it finishes in the other, and for that you should

increase the off time until the option appears and adjust an event for the next day to start at 00h

and 00min. According to the operating mode configured, the following scheduling possibilities may be

presented.

4.2.5 - Adjustment of the current time and day of the week

Press the key until the message appears in the visor.

Hit key . The settings will appear in the following order:

Ex.: 12h43min - Friday

Hours

Minutes

Day of the week

To alternate between viewing the temperature of sensor 1, sensor 2, sensor 3 or the temperature

difference between sensor 1 and 2 (differential temperature), press until the desired temperature is

shown in the display:




differential temperature (S1-S2)

HOURS MINUTES DAY OF THE WEEK

5. FUNCTIONS WHIT FACILITATED ACCESS

5.1 - Visualize other temperatures

SET

The temperature selected will be shown in the display for fifteen seconds, and after that period of time has

ended, the preferential indication will be shown again (as adjusted in the parameter ).

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

shown, followed by the minutes and then the day of the week.

Ex.: 12h43min - Friday

Hours

Minutes

Day of the week

Pressing the key , you can visualize the maximum and minimum temperatures for each sensor, as well

as the minimum and maximum temperature differential. On pressing key (short touch), the message

will be shown showing the temperature of sensor 1 and soon after its minimum and maximum

temperatures, and then the temperatures of sensor 2 ( ), of sensor 3 ( ) and the differential

( ).

If key remains pressed, the values shall be restarted and the message shall be shown on the

display.

5.2 - Visualize the current time

minimum and5.3 - Visualize maximum temperatures

SET

5.4 - Set the operating temperatures of the solar backings

(SETPOINTS)

Pressing the key for two seconds may adjust the operating temperature for solar backing 1 and solarbacking 2, as well as the overheating temperature for sensor 2 (reservoir/pool). A message will bedisplayed , adjust the operating temperature for solar backing 1 using keys e , pressto confirm. Then the message will be displayed, adjust the operating temperature for solar backing2, pursuant to what is described above. After pressing the key , the message will be displayedto adjust the overheated temperature for sensor 2.

Pressing the key for ten seconds manually activates the output for solar backing 1. This will bedeactivated after the time adjusted in the function . lapses. By pressing key again for 10seconds, the manual activation is disabled, and solar backing 1 resumes automatic operation.To deactivate the manual activation, all you have to do is configure function with the value “ 000”.

By pressing key for 10 seconds, one can choose the mode of operation of the water circulationpump.After pressing the key, the message will be displayed and the user may then choose from theoptions listed below, using keys and :

5.5 - Manual activation of solar backing 1

5.6 - Manual activation of the water circulation pump

SET

SET

SET

Circulation pump always offCirculation pump always onCirculation pump operating in automatic mode without sensor 3 temperature validation. In thismode the circulation pump will be activated only by the diferential of temperature (S1-S2)Circulation pump operating in automatic mode with sensor 3 temperature validation. In thismode the circulation pump will be activated by the diferential of temperature (S1-S2) andwhen the temperature at sensor 1 is bigger than at sensor 3.

Confirm the selection by pressing key . The message will be displayed, showing the end ofthe function.

To disable the solar backing`s temperature sensor (sensor 3) enter the functions menu and accessfunction .After entering the function press the button until the message appears in thedisplay, press the key to confirm and exit.When the sensor 3 is disabled the solar backings 1 and 2 will be controlled by sensor 2 (reservoir/pool).If the circulation pump is adjusted for operation with sensor 3 validation and the sensor 3 wasdeactivated the controller will automatically disable the validation.

5.7 - Disabling the temperature sensor 3

SET

SET

6. SIGNALING

7. UNIT SELECTION (°C / °F)

Sensor 1 (collectors) disconnected or out of range

Sensor 2 (reservoir /pool) disconnected or out of range

Sensor 3 (solar backings) disconnected or out of range

Temperature for sensor 1 is freezing

Temperature for sensor 1 is overheated

Temperature for sensor 2 is overheated

Configuration parameters not programmed or out of range

Circulation pump in off manual mode

Circulation pump in on manual mode

To define the unit that the system will use to operate, enter into the functions menu using the

access code “231” and confirm it by hitting key . The indication will appear, press or

to choose between: or and confirm with key .After selecting the unit the

message will appear, and the instrument will return to the function . Whenever the unit is altered,

the parameters should be reconfigured, since they assume ”standard” values.

SET

SET

8. WIRING DIAGRAM

PU

MP

AU

X2

AU

X1

CO

MM

ON

1 2 4 5 6 7 8 9 10 11 1231 2 4 5 6 7 8 9 10 11 123

Pump Load 1 Load 2

Sen

sor

1(c

olle

cto

rs)

Sen

sor

2(r

eser

voir

/po

ol)

Sen

sor

3(s

ola

rb

acki

ng

s)

0115V230V

72 mm

Tear dimensionsto position the instrument

in the panel 29m

m

9 - 89 - 7

MICROSOL II plus115V230V

Ser

ial c

om

mu

nic

atio

nR

S-4

85

Powersupply

Loadssupply

Note: The sensor cable length can be increased by the user until 200 meters using PP 2 x 24 AWG

cable.

Above the current specifieduse contactor

To the terminal ofthe distribution box

A B

A B

RS-485 Network

RS-485 Serial Interface

®

Device used to establish theconnection Full Gauge Controls’instruments with the Sitrad .

Instrument

RS-485 Network

Externalmesh

®

Integrating Controllers, RS-485 Serial Interface and Computer

ABPUMP AUX 1 AUX 2

MIC

RO

SO

LII

plu

s

A A

B B

A B

OUT 1 OUT 2 OUT 3

PC

T-4

00

Rp

lus

OUT 4 ALMR

A A

B B

A B

A A

B B

A B

AB AB

A A

B B

A B

Serial interfaceRS-485

Full Gauge

MOD 64

A A

B B

A B

terminalgrounded

Distribution BoxUsed to connect more than one instrument to the Interface. The wire's connections mustbe made in agreement with the following rules: terminal of the instrument connects tothe terminal of the distribution box, that must be connected with the terminal of theInterface. Repeat the action for terminals and , being the cable shield.

AA A

BThe terminal of distribution box must be connected to the respective terminals ofeach instrument.

IMPORTANT

1:

2:

3:

According to the chapters of norm IEC 60364:

Install on the power supply.

Sensor cables and signal cables of the computer may be joined, but not in the same electric conduit

through which the electric input and the activation of the loads run.

Install transient suppresors (RC filters) parallel to the loads as to increase the product life of the

relays.

protector against overvoltage

For more information, please contact our Technical Support by e-mail: or by

phone +55 51 3475.3308.

[email protected]

Schematic for the connection of supresorsto contactors

Sup

pres

or

A1

A2

A1 and A2 are thecontactor coil terminals.

Schematic for the connection of supresors todirect activation loads

Load

Sup

pres

or For direct activation the maximumspecified current should be takeninto consideration.

PROTECTIVE VINYL:

This adhesive vinyl (included inside the packing) protects the instruments against

water drippings, as in commercial refrigerators, for example.

Do the application after finishing the electrical connections.

Remove the protective paper

and apply the vinyl on the entire

superior part of the device,

folding the flaps as indicated by

the arrows.

microsol ii plus - full gauge · differential temperature controller for solar heating with two...

Documents