Full Gauge Controls MICROSOL Ri, MICROSOL RiL - Thermostat Manual

DESCRIPTION

The MICROSOL Ri is a differential thermostat for solar heating that commands a water circulation pump through the temperature differential that exists between the solar collector panels and the thermal reservoir or pool in solar heating systems.
MICROSOL Ri has functions that improve the absorption of solar energy, prevent the freezing in the pipes during winter and control the overheating.

TECHNICAL SPECIFICATIONS

• Power Supply:
  MICROSOL Ri 115/230 Vac ±10% (50/60 Hz)
  MICROSOL RiL 12/24 Vac/dc
• Temperature control: -50 to 105°C^(*)
• Resolution: 0.1°C
• Load current: 16(8)A / 250 Vac 1HP
• Dimensions: 71 x 28 x 71mm
• Operation temperature: 0 to 50 ºC
• Operation humidity: 10 to 90% RH (without condensation)

^(*) This instrument can measure and control up to 200ºC temperatures, since used with silicone cable sensor (ex.: SB59).

CONFIGURATIONS

To access the function menu

1. Press the key for 2 seconds until appears, release it after that.
2. When appears, press (short touch) and insert the access code (123) through the keys and . To confirm press .
3. Through the keys and access the other functions and do the same to adjust them.
4. To reset the menu and return normal operation, press (long touch) until appears.

Parameters table

Fun	Description	Min	Max	Unit	Standard
	Access code 123 (one hundred and twenty-three)	0	999	-	0
	Preferential indication			-
	Differential (t1-t2) to turn on the pump	1.0	40.0	°C	8.0
	Differential (t1-t2) to turn off the pump	1.0	40.0	°C	4.0
	Temperature of anti-freeze (S1) in the collectors to turn on the pump	2.9	10.0	°C	8.0
	Overheating temperature (S1) to turn off the pump	0.0	105	°C	90.0
	Overheating temperature (S2) to turn off the pump	0.0	105	°C	90.0
	Overheating temperature (S3) to turn off the pump	0.0	105	°C
	Cooling (S3)			-
	Overheating temperature hysteresis of S2 sensor	0.1	5.0	°C	1.0
	Overheating temperature hysteresis of S3 sensor	0.1	5.0	°C	1.0
	S1 Display offset	-5.0	5.0	°C	0.0
	S2 Display offset	-5.0	5.0	°C	0.0
	S3 Display offset ( ** )	-5.0	5.0	°C	0.0

Overheating temperature (S2) to turn the pump off
When the temperature in sensor S2 reaches a determinable value, the pump is turned off to prevent thermal discomfort. This function is used in heating systems for pools that do not use the third sensor. The hysteresis can be adjusted from 0,1 to 5,0°C. (See function ).

Overheating temperature (S3) to turn the pump off
When the temperature in sensor S3 reaches a determinable value, the pump is turned off to prevent the thermal discomfort. This function is used in heating systems for pools that use the third sensor to measure temperature in surface. The hysteresis can be adjusted from 0,1 to 5,0°C. (See function ).
Note: This function also serves to disable sensor S3 (when it is not used), being enough to dislocate the adjustment for maximum until appearing the indication .

Cooling
This function only appears if S3 sensor will be qualified. It has the purpose to cool the pool during the night always that overheating temperature of this sensor will be exceeded and the difference of temperature between S1 and S2 to reach -4°C. Then the pump is turned on using the collector as radiator to coll the water of pool.
When the difference (S1-S2) lower or the temperature in the S3 sensor to reset overheating, the pump is off.

Overheating temperature hysteresis of S2 and S3 sensors
Case the pump will be off for overheating in sensors S2 or S3, through these functions a time interval can be defined where the pump will keep off.

Indication locking of sensors (S1, S2, S3)
It allows to compensate eventual shunting lines in the reading of sensors S1 (collectors), S2 (reservoir) and S3 (surface), proceeding from the exchange of the sensor or alteration of cable length. (It only can be visualized if third sensor will be qualified).
PS: To disable the third sensor see explanation in the function .

The adjusted value in the function must be bigger than the value adjusted in the function . Thus being, MICROSOL Ri does not allow that invalid adjustments are made similar to guarantee its perfect functioning.

First adjust for 2.0°C and after soon adjust for 4.0°C.

SIGNALLING

PUMP signal the pump status.
T1 and T2 indicate which temperature is being displayed.

T1	T2	Indication
		Sensor 1
		Sensor 2
		Differential S1-S2
		Sensor 3

According to the chapters from the IEC60364 standard:

1. Install protectors against over voltage on power supply.
2. Sensor cables and computer signals can be together, however not at the same place where power supply and load wires pass for.
3. Install suppresors of transients (RC filters) in parallel to loads to increase the usefull life of the relays.
4. The withdrawal or substitution of the adhesive panel frontal as well as alterations in the electronic circuit on the part of the user implies in the cancellation of guarantee.

For more information contact our application eng. department through e-mail support@fullgauge.com or dial +55 51 3475.3308.

Wiring diagram of suppresor in contactors

A1 and A2 are the contactor coil.

Wiring diagram of suppresor linking in loads direct drive

For direct drive, consider the maximum load current specified.