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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.

Summary of Contents for FRG3015-F RV

Page 1: ...FRG3015 F RV Control station for constant maintenance of the flow temperature in surface heating systems Installation and Operating Manual translated from the original operating manual WattsWater eu ...

Page 2: ...mity A Declaration of Conformity according to Machinery Directive 2006 42 EC has been issued for the FRG3015 F RV product 1 3 Product features All connections to the system have 1 male thread and flat sealing Very convenient controls compact space saving design Contents 1 General information 2 1 1 Important information about this manual 2 1 2 Product conformity 2 1 3 Product features 2 2 Safety 3 ...

Page 3: ...e operated by people including children with limited physical sensory or mental capacities or by people with insufficient experience or previ ous knowledge 2 4 Foreseeable misuse The following is considered to be foreseeable misuse Operating the FRG3015 F RV beyond its specifications Improper use of the FRG3015 F RV Modifications to the FRG3015 F RV that have not been agreed with the manufacturer ...

Page 4: ... 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 temperature1 40 C Max operating temperature1 80 C Setting r...

Page 5: ... 6 Overall dimensions 127 5 210 G1 DIN228 G1 DIN228 319 25 188 39 5 26 5 94 1 Fl DIN228 1 Fl DIN228 Fig 6 1 Overall dimension 7 Pressure loss diagram 1 100 100 1 000 1 000 10 000 10 10 Fig 7 1 Pressure loss diagram Flow rate l h Pressure loss mbar Injection Manifold side ...

Page 6: ...on can be fitted on the right or left of the manifold by turning the eccentric screw fitting 5 Fig 8 1 also upside down 2 Fit the temperature limiter to the supply collector pipe on the manifold 3 Connect the control station to the power supply Further information about electrical connection of the control station can be found in the separate documen tation for the assemblies 4 Set the temperature...

Page 7: ...ally used for sur face heating systems The system temperature is often significantly lower than the maximum value that can be set on the thermostat head To avoid damage to the floor structure from excess temperature the flow temperature set value can be limited and locked in on the thermostat head 1 Set the temperature and with the surface heating run ning check it on the thermometer 2 If it is co...

Page 8: ...en Hot water is injected from the primary heating circuit As a result the control station heats up When the maxi mum temperature of the TL is reached the contact opens The pump does not switch on again Remove TL from the control station and fit to supply heat ing circuit manifold See 1 1 2 Underfloor heating flow temperature cannot be set to the required value or the feed temperature fluctuates si...

Page 9: ...or replace seals as required 2 Functional check Check that settings and operating and performance parameters are set correctly Check flow noise during operation Ask users if there are any noticeable problems 3 Action to be taken following maintenance work Check that all screw fittings that were unscrewed have been retightened and retighten if necessary Remove all tools materials and other equipmen...

Page 10: ...RG3015 F RV properly or commission a specialist company to do so 3 Sort the assemblies and component parts into recyclable materials hazardous substances and operating materials 4 Dispose of the assemblies and components in accord ance with local laws and regulations or take them to be recycled 11 1Return to the manufacturer Get in contact with the manufacturer if you would like to return the FRG3...

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