GB
1 GENERAL INFORMATIONS
This instructions describe the function, installation and start up of the hydraulic servomotor mixing unit.
The instructions aren't a complete description of the hydraulic unit.
Improper usage excludes any liability claims.
2 PRODUCT DESCRIPTION
1. Ball valve with delivery thermometer
2. Cockpit for probe ø 6 mm with nipple
3. Pump Wilo or Grundfos (if present)
4. Mixing valve with servomotor (if
present)
5. Delivery
6. Return
7. Check valve
8. Return pipe
9. Ball valve with return thermometer
10. Adjustable regulation
11. Insulation box
2.1 FUNCTION
Servomotor mixing unit is used form feeding circuits of heating/cooling systems changing the incoming temperature. It can
be get up a collector. It is possible through the mixing valve with servomotor.
The temperature of delivery and return can be checked using the two thermometers.
In the return pipe there is a check valve that avoids flow return when the pump is off.
2.2 PUMP
Fixed point mixing unit can be provided without pump, with pump Wilo Star-RS 25/6-130 or pump Grundfos UPS 25/65-130.
The features of the pumps are reported here.
WILO Star-RS 25/6-130
6
9
8
7
11
3
2
1
P
=10 bar
max
T
=110° C
max
HYDRAULIC DIAGRAM
1
2
3
4
6
5
GRUNDFOS UPS 25/65-130
Heating system
9
10
Boiler/zone manifold side
3
2
1
P
=10 bar
max
T
=110° C
max
1
2
3
4