18
5 Construction and function
5.1 Summary and functional description
The product group is available with and without
circulation pump.
The individual components of the model without pump
are supplied loosely connected. After installation of
the pump, the connections have to be tightened.
On delivery, the supply pipe is on the right hand side,
but the supply and the return can be changed on site
(see 6.1).
The “Regumat S“ allows for the isolation of the heating
circuit. It consists of an isolation device with thermo-
meters integrated in the handles and a distance piece
for length compensation in the supply pipe. The check
valve integrated in the return pipe avoids gravity
circulation.
The “Regumat M3” has the same design and function
as the “Regumat S”. It is additionally equipped with a
three-way mixing valve and an actuator. The three-way
mixing valve serves to regulate the flow temperature.
5.2 Check valve
The product group is supplied pre-assembled. During
heating operation, the slot for opening the check valve
must be in horizontal position.
Check valve open
Check valve closed
Illustr. 7 Position of check valve “Regumat S”
Operating position: Check valve closed, passage only
in flow direction.
When putting the system into operation and during
maintenance work (filling and flushing), the check
valve must be open.
Isolation function inactive: Check valve open, flow is
possible in both directions.
During heating operation, the check valve must be set
to operating position.
The operating stem of the model “Regumat M3-180”
is located on the side of the three-way mixing valve.
G1 1/2
G1 1/2
125
339
G1 1/2
G1 1/2
393
248
125
G1 1/2
G1 1/2
339
G1 1/2
G1 1/2
393
248
Illustr. 5 “Regumat S-180” DN25 with pump ball
valve (short version)
Illustr. 6 “Regumat M3-180” DN25 with pump ball
valve (short version)
4.4.2 „Regumat S/M3-180“ DN 25 – short version
