Compact Mixing Shunt for Floor Heating, FHM-Cx · VD.UL.F1.02 Produced by Danfoss Floor Heating...

VD.UL.F1.02 Produced by Danfoss Floor Heating Hydronics · 09.2006

Data Sheet

Compact Mixing Shunt for Floor Heating, FHM-Cx

The Danfoss floor heating compact mixing shunts are used for regulating the correct flow and supply temperature in hydronic floor heating systems.

The compact design and flexibility allows mount-ing the mixing shunt directly to the manifold, both on left and right side and primary pipe con-nection to the shunt from the side or below.

A self-acting proportional regulator is used to regulate the supply temperature. The regula-tor ensures the correct mix so that the desired supply temperature to the underfloor heating system always remains constant. A safety thermo-stat (standard in models FHM-C1 and FHM-C5) protects the floor against too high temperatures.

Application:

Mixing shuntFHM-C2/ FHM-C3

Mixing shunt FHM-C5

FHM-C1

Mixing shunt FHM-C6

The energy-saving electronic variable speed pump (Grundfos Alpha+) adjusting itself for cor-rect flow in the circuits; versions with a standard 3-speed pump (Grundfos UPS) are also available. Versions with different capacities are available.

The built-in check valve ensures correct flow direction and the mixing shunt is prepared for inserting temperature sensors. An air-vent on top and a thermometer completes the mixing shunt.

The Danfoss floor heating compact mixing shunt can be mounted directly to the Danfoss manifold system without using special equipment. By using Danfoss floor heating controls all expec-tations of a professional floor heating system are fullfilled.

2 VD.UL.F1.02 Produced by Danfoss Floor Heating Hydronics · 09.2006

DataSheet CompactMixingShunt:FHM-Cx

Spareparts Codenumber

Thermometer 0-60°C, Ø35mm , FHD-T 088U0029

FH-TC 15-50°C temperature controller 088U0302

Safety thermostat FH-ST55 088U0301

Flow limiter, FHM-FL 088U0303

Measuring set , FHM-MS 088U0304

Angle fittings, FHM-AF, Set á 2 Stk. 088U0305

TechnicalData:

Body,unions, other metal parts Brass / stainless steel

O-rings, seals EPDM

Check valve POM/ stainless steel

Weight (depending on model) ca. 4 kg

Max. differential pressure 0,6 bar

Max. working pressure PN10

Max. flow temperature 90°C

¹ safety thermostat with prewired plug 230V (length 1m) and wire for ie. pump connection or together with CF2, switch off temp. 55˚C, ±4K ² CIL2 = bottom part of composite material, PN10 ³ Can only be used by new installation of shunt and manifold 4 Max effect at Δt=30K in primary(70/40) and Δt=5K (10K) in secondary line with heatloss 50W/m² * prewired to pump, stops by reaching the safety temperature of 55˚C

ProductType FHM-C1 FHM-C2 FHM-C3 FHM-C5* FHM-C6

Code no. 088U0080 088U0081 088U0082 088U0084 088U00854 max effect in kW at secondary Δt=5K 7 7 4,5 4,5 7

4 max effect in kW at secondary Δt=10K 13 13 9 9 13

Primary connection ½” ½” ½” ½” ½”

Supply voltage 230V AC 230V AC 230V AC 230V AC 230V AC

Pump type, Grundfos Alpha+ 15-60 CIL2 ²

Alpha+ 15-60 CIL2 ²

Alpha+ 15-40 CIL2 ²

UPS 15-40 CIL2 ²

UPS 15-60 CIL2 ²

Flow limiter FHM-FL Standard As accessory As accessory As accessory As accessory

Measurement set for needles ³ FHM-MS Standard As accessory As accessory As accessory As accessory

Flow temp. control FH-TC, 18-52˚C X X X X X

Electric safety thermo-stat FH-ST55¹ X as accessory as accessory X as accessory

Supply flow thermo-meter 0-60°C FHD-T X X X X X

Integrated check valve X X X X X

3VD.UL.F1.02 Produced by Danfoss Floor Heating Hydronics · 09.2006


FH-ST Thermostat

ElectricalConnection:

CodenumberforFH-ST 088U0301

Shut off temperature 55°C

Switch difference 4 K

Classification IP 40 (mounted)

The FH-ST safety thermostat is fixed on the tube and protects the floor and the system againsttoo high temperatures, especially when woodenfloor is used. The electrical installation has to bedone by authorized people only (230V DC). The FH-TC -thermostat switches off the power supply of the floor heating base unit when the tempera-ture reaches the shut off temperature of 55°C.

TechnicalData:

230V / 16ATS 55°C

By switching off the power supply of the under-floor heating base unit the actuators (NC) will close automatically and the floor heating system is protected. The thermostat can also be con-nected to a pump or zone valve.

FH-TC FH-TC is used for flow temperature control of floor heating and radiator heating systems.FH-TC is a self-acting thermostatic sensorThe water temperature is directly measured by a stainless steel immersion sensor.

Features:- Closes on rising sensor temperature;- Closes against differential pressure of up to 6 bar.- Temperature range: 18-52°C - Designed for pressure PN 10.

1 2 3 4 5 6 (max)

20°C 25°C 30°C 35°C 40°C 45°C 50°C



FHM-FL

017

6

L/h

5

6

4

2

1

3FHM-MS

Danfoss

5

6

4

2

1

3

INPFM 3000

OUTkv

s 7,4

The flow running through the FHM-MS (fixed orifice) can be measured by using the Danfoss measuring equipment PFM 3000 or other brands of measuring equipment.The FHM-MS valve is supplied with two measur-ing nipples for 3 mm needles.The measuring nipples are placed across a fixed orifice and the differential pressure can be meas-ured across this orifice.

Fixed orifice (kVS 7,4) and differential pressure will be used in the measuring equipment to define the flow. Measuring on a fixed orifice valve is very fast and easy.



2 3

2 3

Combined Floor Heating System with Boiler.

Combined Floor Heating System with Heat Pump.

FHM-C

FHM-C

System:



20

25

3441

95

118

25

93 120

213

40

OUT

Danfoss

5

6

4

2

1

3

FHM-C1

Dimensions:

93 74

11840

41

25

20

34

213

25

49

OUT

Danfoss

6

5

4

2

1

3

FHM-C2, FHM-C3



Danfoss

65

4

1

2

3

75

118

3441

4020

25

213

25

49

74

OUT

FHM-C5, FHM-C6

VD.UL.F1.02 Produced by Danfoss Floor Heating Hydronics · 09.2006


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Compact Mixing Shunt for Floor Heating, FHM-Cx · VD.UL.F1.02 Produced by Danfoss Floor Heating...

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