Application Of High-Efficiency Pumps; Mixer; Actuator - meibes 20 Documentation Technique Pour Le Montage Et La Mise En Service

4. Application of high-efficiency pumps

Within the EU, Meibes pump groups are equipped with high-efficiency pumps. To use them observe the assembly and operating instructions
issued by the pump manufacturer.
WILO brand:
Type: Yonos PICO, Stratos PICO/ Stratos PARA
Max. flow/process temperature:
Max. ambient/room temperature:

5. Mixer

The position of the bypass is shown in the illustration. The bypass can be used to reduce the flow temperature through the addition of return
flow water. The bypass adjustment is continuously variable. To adjust the temperature loosen the securing screw (1) by approx. 1mm. and turn
the screw. The bypass is fully opened when the slot of the screw (2) is parallel to the edge of the bypass duct. When fully closed, the slot is at a
right angle to the bypass duct.
Bypass adjustment - see Fig. 4, 4.1 and 4.2
Fig. 4 A Edge of the bypass duct
B Bypass in closed position
C Bypass in open position

6. Actuator

Actuator incl. mounting set
with 2 m cable wired for direct installation on the mixer with manual emergency operation and visible position indicator.
For T-type mixer (Open-Close drive mechanism)
�
3-point control
�
Rotary angle electrically limited to 90°
Note: Plug the actuator on the mixer in an aligned way and hand-tighten the screwed connection.
Text of tender specification/Item description
Actuator with manual operation possibility in an emergency incl. 2 m connecting cable and mounting set for the mixing unit of the pump
groups.
Note: Please observe the installation instructions attached to the actuator.
12
85°C
30°C
Fig. 4.1 A FLow left Fig. 4.2 A Mixer closed (full flow on the boiler side; no mixing on return side)
B Flow right
GRUNDFOS brand:
Type: Alpha 2, Alpha 2L
Max. flow/operating temperature:
Max. ambient/room temperature:
Special features: Use an angle pump connector.
B Bypass (closed in position)
C Clamp screw for bypass
D Flattening of the shaft end in this position
E Closing element
F Matching handle position
G Mixer opened (full flow on return flow side; no flow on boiler side)
80°C
27°C
Effiziente Energietechnik