4
FRG3015-F-RV-IM-DE-W-UK-02-2022-Rev.0.1 | Part no. 10019421
EN
ENGLISH
3 Components overview
1
2
3
5
6
7
4
8
B
D
C
A
Fig. 3-1 Structure
1
Temperature limiter (optional)
2
Fitting with immersion sleeve,
supply temperature sensor
3
Circulation pump
4
Insert check valve
5
Injection valve
6
Thermostatic head
7
Supply temperature thermometer
8
Insert check valve
A
Primary supply (1" male thread)
B
Primary return (1" male thread)
C
Surface heating supply/heating manifold (1" union nut)
D
Surface heating return/heating manifold (1" union nut)
4 Mode of operation
The injection valve (5) is designed as a proportional control-
ler and operates without auxiliary energy. The remote sen-
sor (2) of the thermostatic head (6) situated in the supply (C)
is in continuous contact with the flow temperature at all
times. Deviations from the target value result in an immediate
change in valve stroke and, accordingly, a change in the vol-
ume of the hot water injected from the boiler circuit (A).
The injected water volume is mixed with the return water
from the manifold (D) at the inlet to the circulation pump (3)
and, in this way, keeps the flow temperature constant with-
in a narrow temperature range. The actual value can be
checked on the thermometer (7).
Check valve (4) prevents a short-circuit of the primary cir-
cuit. The temperature limiter (1) switches off the circulating
pump (3), when the supply temperature is exceeded, thus
preventing the panel heating system from overheating.
5 Technical data
Hydraulic performance data
Max. operating pressure
6 bar
Max. ambient temperature
1)
40 °C
Max. operating temperature
1)
80 °C
Setting range of supply
temperature
20 - 70 °C
Kvs value injection
2,50 m³/h
Kvs value manifold side
3,50 m³/h
Heating demand
2)
14 kW at ∆T=10K
Differential pressure
max. 500 mbar
Media
Water/water-glycol mixture
as per VDI 2035/ÖNORM
(Austrian standard) 5195
Connections to pipe network
Primary (heat generator)
1" male thread, flat sealing
Secondary (heat distribution)
1" fl. (union nut), flat sealing
Toques of the fitting
¾"
35 Nm
1"
55 Nm
Materials
Fittings
Brass CW617 N
Pipes
Brass CW508L
Seals and O-rings
AFM34/2 and EPDM
Plastics
Impact resistant and tempera-
ture resistant
Circulation pump and temperature limiter
Technical data can be found in the enclosed technical
documentation.
1) Please refer also to technical leaflets of the pump.
2)
To achieve the rated heat output the pressure difference primary
circuit (boiler-/radiator circuit) to the secondary circuit (floor heat-
ing) should be at minimum 150 mbar (2.2 psi). The temperature
difference between primary and secondary circuit should be at
least 15 K.
