Split System; Constant Heat Regulation Set - meibes 20 Documentation Technique Pour Le Montage Et La Mise En Service

10. Split system (for connection to regulated heating circuits)
A high-temperature switch-off function for under-floor heating is not integrated into the unit. This has to be fitted by a specialist installer
when the system is being installed. A safety group with a 3 bar safety valve is integrated.
Technical data
Split system type:
Max. capacity
(secondary circuit 35°C/45°C
and primary circuit 70°C/50°C):
Maximum pressure:
Maximum temperature:
Installation height with insu-
lation:
Width with insulation:
Depth with insulation:
Insulation material:
Axial separation:
Top and bottom connection:
No. of heat exchanger plates:
Max. pressure loss:
Heat exchanger:

11. Constant heat regulation set

11.1 Thermostatically controlled heat regulation set
The constant heat regulation set is an electrically controlled mixing valve for under floor heating. The flow temperature can be adjusted at
the 3-way T-mixer. Water from the return is mixed into the flow through the adjustable bypass, and the quantity of water circulating in the
heating circuit is increased as a result. A clip-on thermostat allows for a temperature delimitation safeguard to be implemented. In the event
of the flow temperature being exceeded the pump is switched off. Constant temperature control set, regulated by thermostat Complete with
circulating pump (EL 180 mm) with 2 m connection cable, two 3-way ball valves (one with manually-positioned gravity brake), two contact
thermometers, 3- way T-mixer, thermostat head with remote sensor (adjustment range 25-50 ºC), clip-on thermostat, wall mount, return pipe,
EPP insulation, all completely assembled.
see Fig. 10
14
45811.21 45811.31 45811.37
22 kW 25 kW 30 kW
3 bar 3 bar 3 bar
110°C 110°C 110°C
420 mm 420 mm 420 mm
250 mm 250 mm 250 mm
255 mm 255 mm 255 mm
EPP EPP EPP
125 mm 125 mm 125 mm
1" IG 1" IG 1" IG
20 30 36
20 kPa 20 kPa 20 kPa
Plate material W-No. 14401, copper
soldering material (99,9%)
see Fig. 9 and Diagram Fig. D3 and D3.1
Fig. D3 A Volumetric flow - pressure loss diagram
Split system secondary side
B
Pressure loss (bar)
C Volumetric flow (l/h)
Fig. D3.1 A Volumetric flow - pressure loss diagram
Split system primary side
B
Pressure loss (bar)
C Volumetric flow (l/h)
Effiziente Energietechnik