Full Gauge Microsol E Manual

Have this manual in the palm of
your hand by FG Finder application.

1. DESCRIPTION

Differential thermostat for solar heating that controls the water circulation pump based on the
temperature differential between the solar panels and the thermal tank or swimming pool.
e
Microsol
has functions to ensure the yield of the heating system, prevent the freezing in the pipes
during winter and control superheating. Additionally, it includes an intelligent functions lock system to
prevent those unauthorized from changing the control parameters. Diagram for connecting
suppressors to contactors.

2. SAFETY RECOMMENDATIONS

- Check the controller for correct fastening;
- Make sure that the power supply is off and that it is not turned on during the controller installation;
- Read the present manual before installing and using the controller;
- Use adequate Personal Protective Equipmenet (PPE);
- For application at sites subject to water spills, install the protecting vinyl supplied with the controller;
- For protection under more critical conditions, we recommend the Ecase cover, which we make
available as an optional item (sold separately);
- The installation procedures should be performed by a qualified technician.

3. APPLICATIONS

• Pumped solar heating systems

4. TECHNICAL SPECIFICATIONS

Microsol E:115 or 230 Vac
Power Supply
Microsol EL 12 or 24 Vdc or Vac
Approximate consumption
0.8 VA
Setpoint Temperature
(**)
-50 to 105°C (-58 to 221°F)
Operating Temperature
0 to 50 ºC / 32 to 122°F
Operating humidity
10 to 90% RH (with no condensation)
NO -16A / 2HP
Maximum current per output
NC - 500W / 1/10HP
Protection level
IP 65 (frontal)
Dimensions (mm)
76 x 34 x 77 mm (W x H x D)
Cutout dimensions (mm)
X = 71±0,5 Y = 29±0,5 (see Image V)
(*) Admissible variation in relation to the voltage rating.
(**) This device can measure and control temperatures of up to 200°C/392°F, when used in conjunction with a SB59
model silicon sensor cable (sold separately).
IMPORTANT: Only sensors 1 and 2 are included with the product. Sensor 3 may be purchased separately.

5. INDICATORS AND KEYS

Sensor 2 indication LED
Sensor 1 indication LED
PUMP output indication LED
Quick Access
Menu Key (Flatec)
Set Key
e
Microsol

6. WIRING DIAGRAM

6.1. Electrical connections (see Images I to IV)
Image I: Microsol E - 115Vac
5 6 7 8
9 10 11 12 13 14 15 16 17
1 2 3 4
Image III: Microsol EL - 12Vac/dc
5 6 7 8
9 10 11 12 13 14 15 16 17
1 2 3 4
12 Vac/dc
Microsol
DIFFERENTIAL THERMOSTAT
FOR SOLAR HEATING
Functions
Protection Protection Temperature
lockdown
against against differential
antifreeze overheating
±10% * (50/60 Hz)
:
+10% *
Functions lockdown indication LED
Control functions shutdown indication LED
Temperature unit indicator LED
5 6 7 8
1
115 Vac
5 6 7 8
1
Loads supply
e
IP 65
FRONT
Control functions Serial Protection
shutdown Programming level
Surge Protective Device (SPD)
Wiring diagram for instalation of SPD in
magnectic contactor
A1 and A2 are the terminals of the contactor
coil.

6.2. Temperature sensor connection

- Connect the sensor S1 wires to terminals "7 and 8" / sensor S2 to terminals "1 and 2" : the polarity is
not relevant, if you use sensor S3, this must be connected to terminals "1 and 3".
- The sensor cable can be extended up to 200 meters by the user, using a PP2x24AWG cable type.
- For immersion in water, we recommend to use a thermowell, available in the Full Gauge Controls
product line (sold separately).

6.3. Controller power supply

Use the pins according to table below, considering the set version:
Pins
9 and 10
9 and 11

6.4. Recommendations of IEC60364 standard

a) Install overload protectors in the controller supply.
b) Install transient suppressors – suppressor filter RC – in the circuit to increase the service life of the
controller relay.
c) The sensor cables may be together, but not in the same conduit where the power supply of the
controller and/or of the loads passes through.

7. FASTENING PROCEDURE

a) Cut out the panel plate (Image V - item 14) where the controller shall be fastened, with sizes
X = 71±0.5 mm and Y = 29±0.5 mm;
b) Remove side locks (Image VI - item 14): to do that, compress the central elliptical part (with the Full
Gauge Controls logo) and displace the locks backwards;
c) Introduce the controller in the notch made on the panel, inwards;
d) Place the locks again and then displace them until they compress into the panel, fastening the
controller to the housing (see arrow indication in Image VI - item 14);
e) Perform the electric installation as described in item 6;
f) Adjust the parameters as described in item 8.
ATTENTION: for installations requiring liquid tight sealing, the notch sizes for the controller
installation should be no more than 70.5x29mm. The side locks should be fastened so that they
press the sealing rubber avoiding infiltration between the notch and the controller.
Protector vinyl - Image VII (item 14)
This adhesive vinyl is supplied with the instrument in the package.
IMPORTANT: Make the application only after completing the electrical connections.
a) Retreat the side locks (Image VI - item 14);
Upper Key
b) Remove the protective film from the adhesive vinyl face;
c) Apply the vinyl over the entire upper part, bending the flaps, as indicated by the arrows - Image VII
(item 14);
d) Reinstall the locks.
Lower Key NOTE: The vinyl is transparent, allowing visualization of the wiring system of the instrument.
Image II: Microsol E - 230 Vac
9 10 11 12 13 14 15 16 17
2 3 4
Image IV: Microsol EL - 24Vac/dc
9 10 11 12 13 14 15 16 17
2 3 4
24 Vac/dc
e e
M icr os ol M icr os ol
(sold separately)
Wiring diagram for instalation of SPD in
line with loads
For direct drive take in to consideration the
specified maximum current.
A1
A2
Microsol E
115 Vac
230 Vac
IDENTIFICATION OF SENSORS:
S1: Collectors
230 Vac
S2: Reservoir/pool
S3*: Surface
IMPORTANT: Only the sensors 1 and 2
accompany the product, the sensor 3* can be
purchased separately.
IMPORTANT
INSTRUMENTS IN THE EVOLUTION SERIES HAVE
TWO DIFFERENT TERMINAL SIZES, BUT BOTH ARE
COMPATIBLE WITH THE SCREWDRIVER 2.0MM.
USING THE APPROPRIATE TOOLS DURING
INSTALLATION ENSURES A LONGER LIFE AND THE
Loads supply
PROPER OPERATION OF THE PRODUCTS.
evolution
LOAD
Microsol EL
12 Vac/dc
24 Vac/dc