Danfoss FHF-F Data sheet

FHF-F
FHF-EA/EM
TWA
FHF-BV
FHF-EA/EM
Data sheet
Floor Heating Manifold FHF-F
Application
The FHF-F Manifold is used for controlling water flow in underfloor heating systems. Each pipe in the floor heating system is connected to the manifold, thus making it possible to control water flow or heat supply to each room in the building individually.
The manifold comprises of a supply and return manifold. The supply manifold includes individual shut-off of each circuit as well as an individual flowmeter per circuit. The return manifold is equipped with integrated Danfoss pre-setting valves securing optimal hydraulic balance in the system.
The valves can be controlled electronically by thermal actuators or act as self-acting units by means of remote temperature adjusters.
The manifold is supplied in modules of up to 12 outlets. Ball valves are available as an option for positive shut-off between the manifold and the system.
The end pieces FHF-EM and FHF-EA are supplied with manual airvents or alternatively with auto­matic airvents.
Manifold with flowmeter
Manifold without flowmeter
System layout
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Data sheet Floor Heating Manifold, FHF-F
Ordering
Description Type Code no.
Manifold set 2+2, with flowmeter FHF-2F 088U052200
Manifold set 3+3, with flowmeter FHF-3F 088U052300
Manifold set 4+4, with flowmeter FHF-4F 088U052400
Manifold set 5+5, with flowmeter FHF-5F 088U052500
Manifold set 6+6, with flowmeter FHF-6F 088U052600
Manifold set 7+7, with flowmeter FHF-7F 088U052700
Manifold set 8+8, with flowmeter FHF-8F 088U052800
Manifold set 9+9, with flowmeter FHF-9F 088U052900
Manifold set 10+10, with flowmeter FHF-10F 088U053000
Manifold set 11+11, with flowmeter FHF-11F 088U053100
Manifold set 12+12, with flowmeter FHF-12F 088U053200
End section - automatic airvent and purge valve FHF-EA 088U058000
End section - manual airvent and purge valve FHF-EM 088U058100
End caps -set FHF-E 088U058200
Connection pieces - set FHF-C 088U058300
Reduction bushes/pieces -set 1" - 3/4" FHF-R 088U058400
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Data sheet Floor Heating Manifold, FHF-F
Ordering
Description Type Code no.
Mounting brackets - set FHF-MB 088U058500
2 x ball valve 1” with tail piece - for connection to manifold and for blocking of floor heating system
1 x thermometer 0-60°C Ø35mm - for flow/return temperature measurement
Thermal actuator, 24V, NC, Danfoss RA connection to valve
Thermal actuator, 230V, NC, Danfoss RA connection to valve
Thermal actuator, 24V, NC, with end switch, Danfoss RA connection to valve
FHF-BV 088U058600
FHD-T 088U002900
TWA-A 088H311000
TWA-A 088H311200
TWA-A 088H311400
Description Type Code no.
12x2 mm 013G415200
13x2 mm 013G415300
Compression fittings for PEX tubing in accordance with DIN 16892/16893.
14x2 mm 013G415400
15x2,5 mm 013G415500
Max working pressure - 6 bar Test pressure – 10 bar Max flow temp. – 95 °C G ¾” Internal thread
Max flow temperature given by the tube manufacturer must not be exceeded.
Compression fittings for ALUPEX tubing.
Max working pressure - 6 bar Test pressure – 10 bar Max flow temp. – 95 °C G ¾” Internal thread
Max flow temperature given by the tube manufacturer must not be exceeded.
Compression fittings for STEEL and COPPER tubing.
Max working pressure - 6 bar Test pressure – 10 bar Max flow temp. – 120 °C G ¾” Internal thread
16x1,5 mm 013G415700
16x2 mm 013G415600
16x2,2 mm 013G416300
17x2 mm 013G416200
18x2 mm 013G415800
18x2,5 mm 013G415900
20x2 mm 013G416000
20x2,5 mm 013G416100
12x2 mm 013G418200
14x2 mm 013G418400
15x2,5 mm 013G418500
16x2 mm 013G418600
16x2,25 mm 013G418700
18x2 mm 013G418800
20x2 mm 013G419000
20x2,5 mm 013G419100
10 mm 013G412000
12 mm 013G412200
14 mm 013G412400
15 mm 013G412500
16 mm 013G412600
18 mm 013G412800
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Data sheet Floor Heating Manifold, FHF-F
Capacity/ commissioning
The pre-setting of the manifold valves determines the flow in the floor heating pipes and is there­fore an important factor for obtaining optimal hydraulic balance in the system. Correct hydraulic
balance is important if optimal comfort is to be achieved with minimum energy consumption and is easily carried out following the example shown below.
Example
Room 1 1 Determine longest pipe/largest room 25 m
2 Desired cooling (ΔT) 5 °C (typical)
3 Determine heat requirement for the room 50 W/m
4 Conversion factor 1.16
5 Calculation of flow for the room Q (l/h) = 50 W/m2 x 25 m2
5 °C x 1.16
Q (l/h) = 216 l/h
Room 2 6 Determine area of the next room 15 m2
7 Calculation of flow for the room
(ΔT and heat requirement is assumed
Q (l/h) = 50 W/m2 x 15 m 5 °C x 1.16
identical for the rooms in this case)
Q (l/h) = 129 l/h
Manifold with flowmeter
2
2
2
Pre-setting: Room 1 N Room 2 5
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Data sheet Floor Heating Manifold, FHF-F
Pre-setting the manifold valves
Design
The diagrams show the capacities for each heat­ing circuit at different pre-settings of the manifold valves. Based on the above calculations and ca­pacity diagrams each manifold valve is pre-set by
Item Description Material
1 Sightglass Heat resistant plastic
2 Flowmeter nut Brass, CuZn39Pb3
3 Flowmeter insert Brass, CuZn39Pb3
4 Supply manifold body Brass, CuZn40Pb2
rotating the red ring until the correct value on the ring is in-line with the sight mark on the valve.
Supply manifold
with flowmeter
Return manifold
with control valve
5 O-ring EPDM
6 Union for compression fitting Brass, CuZn40Pb2
Item Description Material
1 Gland seal -
2 Pre-setting ring PBT
3 Valve body Brass, CuZn40Pb2
4 Return manifold body Brass, CuZn40Pb2
5 Kv insert Brass, CuZn39Pb3
6 O-ring EPDM
7 Union for compression fitting Brass, CuZn40Pb2
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Data sheet Floor Heating Manifold, FHF-F
Operation conditions
Dimensions
Max differential pressure: 0.6 bar Max working pressure: Manifold with flowmeter 6 bar Max test pressure: Manifold with flowmeter 10 bar Max flow temperature: 90 °C
Type 2+2 3+3 4+4 5+5 6+6 7+7 8+8 9+9 10+10 11+11 12+12
L1 (mm) 111 161 211 261 311 361 411 461 511 561 611
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Data sheet Floor Heating Manifold, FHF-F
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Data sheet Floor Heating Manifold, FHF-F
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