Lovato T-BACK e Instructions Pour L'installation, L'utilisation Et La Maintenance page 13

SCHEME 1: Plant with open circuit
T1
1
2
3
4
5
1. Graphic display
2. Clutch for manual operation.
3. Button Return back.
4. Button Move to left, decreasing.
5. Button Menu entry, confirmation of selection.
6. Button Move to right, increasing.
7. Button Help.
8. LED indication - valve rotation right.
9. LED indication red - fault, error.
10. LED indication - valve rotation left.
SECTION 4: WORkING PRINCIPLE
B-AB
B-AB - the thermal valve is closed to the users as long the
water in the boiler loop is colder than the opening temperature
of the thermal valve. The pump recirculates the water through
bypass "B" that is completely open.
T2
AB - When the water is reaching the opening temperature of
the valve, the way to the user is proportion
A-AB - The flow temperature of the boiler increases to allow
the total opening to the users and the closing of the bypass.
SECTION 5: CONSTANT TEMPERATURE CONTROLLER
6 7
Assembling instrunctions and maintenance
SCHEME 2: Plant with closed circuit
AB A-AB
TECHNICAL DATA
10
Power supply:
9
Consumption:
8
Protection degree:
Safety class:
Dimensions:
Weight:
SENSORS TECHNICAL CHARACTERISTICS
Sensor type T1 - T2:
Sensor resistance
Operating temperature:
Min. sensor cables section:
Max. sensor cables lenght:
T2
T1
230 VAC, 50 Hz
0,5 VA
IP42 - EN 60529
I - EN 60730-1
84x104x94 mm
800 g
Pt 1000
1078 Ώ a 20°C
-25 ÷ 150°C, IP32
0,3 mm
2
MAX 10 m