Danfoss FBH Data sheet

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FBH
TWA-K
Data Sheet
FBH Floor Heating Manifold
Application
The FBH floor heating manifold is used for con­trolling the water flow in floor heating systems. Each string of the floor heating system is connec­ted to the manifold, thus making it possible to control water flow or heat supply for each room individually. The FBH range includes manifolds from 2 to 12 outlets.
FBH floor heating manifolds are supplied with all necessary parts included:
1 supply manifold with flowmeter and possi-
bility for individual shut-off of each circuit 1 return manifold
2 ball valves
2 brackets with screws and plugs
The manifold valves can be controlled electroni­cally by TWA-K thermal actuators or act as self­acting units by means of remote temperature ad­justers, either by using CF2 or wired system.
Scope of Delivery
1.
Manifold body, stainless steel
2. Air-vent valve
3.
Cap on regulation valve M30x1.5 mm
4. 1” plug
5. Euro cone
6. Drain valve
7. Brackets
8. Flowmeter
9. Euro cone
10. Flow mark
11. Fastener set
12. 1” ball valves, 2 pcs., incl. flat packing
System Layout
Danfoss Heating Solutions VDUDR302 © Danfoss 08/2012 1
Data Sheet FBH Floor Heating Manifold
Ordering
Product Description Type/Size Code no.
FBH Manifold 2+2, stainless steel FBH-2F 088X0302 FBH Manifold 3+3, stainless steel FBH-3F 088X0303 FBH Manifold 4+4, stainless steel FBH-4F 088X0304 FBH Manifold 5+5, stainless steel FBH-5F 088X0305 FBH Manifold 6+6, stainless steel FBH-6F 088X0306 FBH Manifold 7+7, stainless steel FBH-7F 088X0307 FBH Manifold 8+8, stainless steel FBH-8F 088X0308 FBH Manifold 9+9, stainless steel FBH-9F 088X0309 FBH Manifold 10+10, stainless steel FBH-10F 088X0310 FBH Manifold 11+11, stainless steel FBH-11F 088X0311 FBH Manifold 12+12, stainless steel FBH-12F 088X0312
Thermal actuator - 24 V - NC TWA-K 088H3140 Thermal actuator - 230 V - NC TWA-K 088H3142
12x2 mm 013G4152
Compression fittings for PEX tubing in ac­cordance with ISO 15875.
Max working pressure: 6 bar
Test pressure: 10 bar
Max flow temperature: 95 °C
G ¾” internal thread
Max flow temperature given by the tube manufacturer must not be exceeded.
Compression fittings also suitable for PERT tubing in accordance with ISO
15875.
13x2 mm 013G4153 14x2 mm 013G4154
15x2.5 mm 013G4155
16x 1.5 mm 013G4157
16x2 mm 013G4156
16x2.2 mm 013G4163
17x2 mm 013G4162 18x2 mm 013G4158
18x2.5 mm 013G4159
20x2 mm 013G4160
20x2.25 mm
20x2.5 mm 013G4161
013G4093
Compression fittings for ALUPEX tubing.
Max working pressure: 6 bar
Test pressure: 10 bar
Max flow temperature: 95 °C
G ¾” internal thread
Max flow temperature given by the tube manufacturer must not be exceeded.
Compression fittings also suitable for PERT/ALU/PERT tubing.
Compression fittings for STEEL and COP­PER tubing.
Max working pressure: 6 bar
Test pressure: 10 bar
Max flow temperature: 120 °C
G ¾” internal thread
12x2 mm 013G4182 14x2 mm 013G4184
15x2.5 mm 013G4185
16x2 mm
16x2.25 mm 013G4187
18x2 mm 013G4188 20x2 mm 013G4190
20x2.25 mm
20x2.5 mm 013G4191
10 mm 013G4120 12 mm 013G4122 14 mm 013G4124 15 mm 013G4125 16 mm 013G4126 18 mm 013G4128
013G4186
013G4093
2 VDUDR302 © Danfoss 08/2012 Danfoss Heating Solutions
Q (l/h) =
50 W/m2 x 25 m
2
5°C x 1.16
= 216 l/h
Q (l/h) =
50 W/m2 x 15 m
2
5°C x 1.16
= 129 l/h
10 20 30 40 50 70 100 200 300 400 500 700 1000
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p
Q [l/h]
[kPa]
[bar]
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[mWg]
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½ ½
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Max
½
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Data Sheet FBH Floor Heating Manifold
Capacity/Commissioning
The pre-setting of the manifold valves deter­mines the flow in the floor heating tubes and is therefore an important factor for obtaining optimal hydraulic balance in the system.
A correct hydraulic balance is important if opti-
mal comfort shall be achieved with a minimum of energy consumption and is easily carried out fol­lowing the example shown below.
Example
Room 1 1 Determine longest tube/largest room 25 m²
2 Desired cooling (ΔT) 5°C (typical) 3 Determine heat requirement for the room 50 W/m² 4 Conversion factor 1.16
5 Calculation of flow for the room
Room 2 6 Determine area for the next room 15 m²
Calculation of flow for the room (ΔT and
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heat requirement is assumed identical for the rooms in this case)
FBH manifold with TWA-K
Presetting with TWA-K actuators on the supply manifold can be carried out by opening the regu­lation valve by turning fully to open. Then adjust each flow meter to obtain flow as calculated (see example).
If the right flow cannot be obtained, the
pump must be replaced with a larger one. Start balancing with fully open the flow me-
ter for circuit with the longest pipe length. Next open flow meter for the circuit with second longest pipe length, until wanted flow is indicated in flow meter and so on.
When all circuits are done, go back to the
Close all flow meters.
Fully open all circuits, starting with the lon-
gest pipe length, then the second longest etc.
first and adjust for wear to wanted flow.
The pressure drop is calculated as sum of: ΔP­pipe (longest circuit) + ΔP flow manifold.
Pressure loss / flow manifold set
(Turns - opening flow meter)
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Data Sheet FBH Floor Heating Manifold
Design
Operation Conditions
Dimensions
Supply manifold with flowmeter
Description Material
1. Sightglass Heat resistant plastic
2. Flowmeter nut Plastic
3. Adjusting cap Plastic
4. Supply manifold body St
5. O-rings EPDM
6. Connection nipple Brass
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
ainless st
eel
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) 192 242 292 342 392 442 492 542 592 642 692
Danfoss A/S Heating Solutions Haarupvaenget 11 8600 Silkeborg Denmark Phone:+45 7488 8000 Fax: +45 7488 8100 Email: heating.solutions@danfoss.com www.heating.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss Heating Solutions and the Danfoss Heating Solutions logotype are trademarks of Danfoss A/S. All rights reserved.
4 VDUDR302 © Danfoss 08/2012 Danfoss Heating Solutions
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