Data Sheet
Horizontal Distribution Units - HDU Multi-port
Application |
Danfoss pre-fabricated HDU distribution units are |
|
made for distribution and measuring of water- |
|
based heating in 2-pipe horizontal systems. |
|
A HDU is easily mounted on the apartment wall |
|
and connected to the riser. The radiators in the |
|
apartment are connected through the manifold. |
|
The unit design provides a good overview of the |
|
installation, which makes after-service easy. |
All Danfoss distribution units are equipped with:
▪heat meter, for individual measuring of energy consumption.
▪dP controller, to ensure hydraulic stability in the heating system.
HDU multi-port units are wall-mounted and created for parallel radiator distribution. HDU multiport units are available with 4 or 7 manifold ports, each in two versions with left or right connection.
HDU 4-port
- with left connection
Installation Example
HDU multi-port system
Danfoss Heating Solutions |
VDIGB102 |
© Danfoss |
08/2012 |
1 |
Data Sheet |
Horizontal Distribution Units - HDU Multi-port |
|
|
|
|
Technical Data |
|
|
Max. temperature |
90 °C |
|
|
|
|
|
Max. working pressure in heating system piping before the unit |
2 bar |
|
|
|
|
Normal required differential pressure over unit (HDU-SF) |
0.26 bar* |
|
|
|
|
Max. differential pressure in a control loop |
0.22 bar |
|
|
|
|
Max. static pressure |
10 bar (PN10) |
|
|
|
|
Connection to riser (in and out) |
R ¾" |
|
|
|
|
Connection to manifold (out) |
¾" |
|
|
|
|
Power supply (Heat Meter) |
A-cell battery, 3.6 VDC |
|
|
|
|
*At differential pressure in control loop 10 kPa at |
|
|
100% AB-PM setting. |
|
Ordering |
HDU-SF |
|
|
Connection |
Code no. |
|
Horizontal Distribution Unit Single Flat - HDU-SF 4-port |
left |
003L1222 |
||
|
|
|
|
|
|
|
Horizontal Distribution Unit Single Flat - HDU-SF 4-port |
right |
003L1228 |
||
|
|
|
|
|
|
|
Horizontal Distribution Unit Single Flat - HDU-SF 7-port |
left |
003L1225 |
||
|
|
|
|
|
|
|
Horizontal Distribution Unit Single Flat - HDU-SF 7-port |
right |
003L1231 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
Accessories and Spare Parts |
|
|
Code no. |
|
|
Manifold port plug (10 pcs.) |
|
|
003L1246 |
|
|
|
|
|
|
|
|
Capillary tube for AB-PM |
|
|
003L8152 |
|
|
|
|
|
|
|
|
Filter for strainer |
|
|
|
065B8248 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Modules for Heat Meter |
|
|
Code no. |
|
|
|
M-Bus module |
|
|
087G6027 |
|
|
|
|
|
|
|
Communication |
L-Bus module (use for external radio) |
|
087G6035 |
|
|
|
|
|
|
|
|
RS232 module |
|
|
087G6029 |
|
|
|
|
|
||
|
|
|
|
|
|
|
|
RS485 module |
|
|
087G6032 |
|
|
|
|
|
|
|
|
Analogue output module (4 - 20 mA) |
|
087G6034 |
|
|
|
|
|
|
|
|
Function |
Combined module (2 pulse inputs / 1 pulse output) |
|
087G6041 |
|
|
|
|
|
|
|
|
Pulse input module (2 inputs) |
|
087G6037 |
||
|
|
|
|||
|
|
|
|
|
|
|
|
Pulse output module (2 outputs) |
|
087G6039 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Compression Fittings |
Data |
Size |
Code no. |
|
|
|
|
|
16 x 2 mm |
013G4156 |
|
|
|
|
|
|
|
For PEX tubing |
|
PN6 |
20 x 2 mm |
013G4160 |
|
(in accordance with ISO 15875) |
G ¾” internal thread |
20 x 2.25 mm |
013G4093 |
|
|
|
|
|
|
|
|
|
|
|
20 x 2.5 mm |
013G4161 |
|
|
|
|
|
|
|
|
|
|
16 x 2 mm |
013G4186 |
|
|
|
|
|
|
|
For ALUPEX tubing |
PN10 |
20 x 2 mm |
013G4190 |
|
|
G ¾” internal thread |
20 x 2.25 mm |
013G4093 |
||
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
20 x 2.5 mm |
013G4191 |
|
|
|
|
|
|
|
For steel and copper tubing |
PN10 |
16 mm |
013G4126 |
|
|
G ¾” internal thread |
18 mm |
013G4128 |
||
|
|
|
|||
|
|
|
|
|
|
|
Note! Max. flow temperature given by the tube manufacturer must not be exceeded. |
|
|||
|
|
|
|
|
|
2 |
VDIGB102 |
© Danfoss |
08/2012 |
Danfoss Heating Solutions |
Data Sheet |
Horizontal Distribution Units - HDU Multi-port |
|
|
Design |
1. |
Ball valve for inand outlet connection to the |
|
|
riser. |
|
2. |
Strainer to trap dirt, sand etc. from pipe water |
|
|
(replacement filter available as accessory). |
|
3. |
AB-PM automatic balancing valve, combines |
|
|
three functions: differential pressure controller, |
|
|
control valve with linear characteristic and |
|
|
flow limiter. |
|
4. |
Manifold for radiator connection, flow. |
|
5. |
Manifold for radiator connection, return. |
|
6. |
Automatic air vent and drainage (both inlet |
|
|
and outlet has drainage and air vent possibili- |
|
|
ties). |
|
7. |
Heat Meter for energy measuring, with 8-digit |
|
|
LCD. |
|
8. |
Cabinet (with lockable door). |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Materials in Contact with |
1 |
Shutoff valves |
Body, tailpiece, ball |
Brass |
||
Water |
|
|
|
|
|
|
|
|
|
|
Seals |
PTFE |
|
|
|
|
|
|
|
|
|
|
|
|
|
O-ring |
EPDM |
|
|
|
|
|
||
|
|
|
|
|
||
|
2 |
Strainer |
Body |
Brass |
||
|
|
|
|
|
|
|
|
|
|
|
|
Filter |
Stainless steel |
|
|
|
|
|
|
|
|
|
|
|
|
O-ring |
EPDM |
|
|
|
|
|
||
|
|
|
|
|
||
|
3 |
AB-PM valve |
Body, cone (CV), seat (CV) |
Brass |
||
|
|
|
|
|
|
|
|
|
|
|
|
Membrane, O-ring, seat (PC) |
EPDM |
|
|
|
|
|
|
|
|
|
|
|
|
Spring, cone (PC), screw |
Stainless steel |
|
|
|
|
|
|
|
|
|
|
|
|
Flat gasket |
NBR |
|
|
|
|
|
|
|
|
|
|
|
|
Sealing agent |
Dimethacrylate Ester |
|
|
|
|
|
|
|
|
|
|
|
|
Capillary tube |
Copper |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4 |
& |
5 |
Manifold |
Inlet adapter, shutter, manifold |
Brass |
|
|
|
|
|
pipe, Euro cone connector |
|
|
|
|
|
|
|
|
|
|
|
|
|
O-rings |
EPDM |
|
|
|
|
|
||
|
|
|
|
|
||
|
6 |
Air vent & drainage |
Body |
Brass |
||
|
|
|
|
|
|
|
|
|
|
|
|
Seals |
EPDM |
|
|
|
|
|
||
|
|
|
|
|
||
|
7 |
Heat Meter |
Body of flow meter |
Brass |
||
|
|
|
|
|
|
|
|
|
|
|
|
Temperature sensors, reflectors |
Stainless steel |
|
|
|
|
|
|
|
|
|
|
|
|
Measuring tube |
qp 0.6 - 2.5 --> PES |
|
|
|
|
|
|
qp 3.5 - 60 --> PEEK-GF or PPS-GF |
|
|
|
|
|||
|
|
|
|
|||
|
Other parts |
Assembly nipples |
Brass |
|||
|
|
|
|
|
|
|
|
|
|
|
|
Flat gaskets |
Aramide fibres, NBR |
|
|
|
|
|
|
|
Danfoss Heating Solutions |
VDIGB102 |
© Danfoss |
08/2012 |
3 |
Data Sheet |
Horizontal Distribution Units - HDU Multi-port |
|
|
Settings
ΔP_v
Q [l/h]
ΔP_a
ΔP_a ≥ ΔP_v + ΔP_loop
Q = Needed design flow for the loop.
P_loop = Needed design P for the loop.
P_a = available P.
P_V = min needed P for AB-PM (starting PV) = 16 kPa
|
|
|
|
<![if ! IE]> <![endif]>ΔP loop |
|
|
|
|
<![if ! IE]> <![endif]>ΔP loop |
||
|
<![if ! IE]> <![endif]>ΔP loop |
||||
| <![if ! IE]> <![endif]>ΔP loop |
|||||
Flow l/h
700
600
500
400
300
200
100
0
100% 90% 80%
70% 60%
50% 40%
30%
20%
|
|
5 |
6 |
7 |
8 |
9 |
10 11 12 13 14 15 16 17 18 |
|
|
||||
|
|
|
|
|
|
|
|
P_loop [kPa] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
P_loop |
|
|
|
|
|
|
|
Flow [l/h] - average |
|
|
|
||
[kPa] |
20% |
30% |
|
|
40% |
|
|
50% |
60% |
70% |
80% |
90% |
100% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 |
142 |
209 |
|
|
294 |
|
|
360 |
443 |
509 |
591 |
642 |
684 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6 |
138 |
201 |
|
|
284 |
|
|
346 |
424 |
484 |
563 |
611 |
655 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7 |
134 |
193 |
|
|
274 |
|
|
331 |
405 |
460 |
534 |
580 |
626 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
8 |
129 |
185 |
|
|
263 |
|
|
316 |
386 |
435 |
505 |
548 |
595 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9 |
125 |
177 |
|
|
252 |
|
|
300 |
366 |
410 |
476 |
516 |
564 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 |
120 |
168 |
|
|
240 |
|
|
285 |
346 |
386 |
447 |
484 |
531 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
11 |
115 |
160 |
|
|
228 |
|
|
269 |
326 |
361 |
418 |
452 |
498 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12 |
110 |
151 |
|
|
215 |
|
|
253 |
305 |
337 |
388 |
420 |
464 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13 |
104 |
142 |
|
|
202 |
|
|
237 |
284 |
313 |
359 |
388 |
430 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14 |
99 |
134 |
|
|
189 |
|
|
221 |
263 |
288 |
329 |
355 |
394 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
15 |
93 |
125 |
|
|
175 |
|
|
205 |
241 |
264 |
299 |
322 |
357 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
16 |
87 |
116 |
|
|
161 |
|
|
188 |
219 |
240 |
269 |
289 |
320 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
17 |
81 |
107 |
|
|
146 |
|
|
172 |
196 |
216 |
239 |
256 |
282 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
18 |
74 |
97 |
|
|
131 |
|
|
155 |
174 |
192 |
209 |
222 |
243 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
19 |
68 |
88 |
|
|
116 |
|
|
138 |
150 |
168 |
179 |
189 |
203 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20 |
61 |
79 |
|
|
100 |
|
|
120 |
127 |
144 |
148 |
155 |
162 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4 |
VDIGB102 |
© Danfoss |
08/2012 |
Danfoss Heating Solutions |
Data Sheet |
Horizontal Distribution Units - HDU Multi-port |
|
|
AB-PM Automatic Balancing Valve
Example Given:
Design flow trough radiatorsloop: 450 l/h
Pressure drop trough the loop at design flow: 10 kPa
Solution:
Set to 80 %, AB-PM will control differential pressure of 10 kPa when design flow is achieved. It will at any loads including keep it under 22 kPa at zero load, while limiting the flow to radiator system to 450 l/h.
AB-PM is a combined automatic balancing valve. It features three functions in a compact valve body:
1. Differential pressure controller.
2. Control valve with linear characteristic.
3. Flow limiter.
Benefits:
▪ Reliable heating system resulting in proper heat distribution even at partial loads and noise free operation based on stable low Δp over thermostatic radiator valves even in installation where higher pump head is needed.
▪ Lower heating cost.
▪ Better indoor temperature control • Faster in simpler installation with less installation space needed.
Technical data
Nominal diameter |
|
DN20 |
|
Control valves characteristic |
|
Linear |
|
|
|
|
|
Shut-off leakage rate |
|
Acc. to ISO 5208 class A - no visible leakage |
|
|
|
|
|
CV stroke |
|
2.25 mm |
|
|
|
|
|
Connection |
|
Ext. thread ISO 228/1 |
G 1 A |
|
|
|
|
|
Actuator |
M 30 x 1.5 |
|
|
|
||
|
|
|
|
Design
1.Spindle.
2.Stuffing box.
3.Pointer.
4.Control valve’s cone.
5.Membrane.
6.Main spring.
7.Hollow cone (pressure controller).
8.Vulcanized seat (pressure controller).
9.Impulse tube.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
AB-PM is a combined automatic balancing valve. It is working as Δp controller, flow limiter and zone controller. Higher pressure acts on the upper side of the control diaphragm (5) while via an impulse tube (9) lower pressure in the return pipe acts on the lower side of the diaphragm. When available pressure increases at partial loads, the membrane closes and thus keeps stable Δp inside the controlled loop. Δp controller keeps constant differential pressure on the controlled loop including the control part of AB-PM (similar as if ASV-I would be integrated into ASV-P).
The control part of AB-PM is working as a flow limiter. This enables to set both the design flow as well as needed Δp. The flow rate is defined by presetting AB-PM, based on pressure demand of the loop. With actuator mounted on the valve, AB-PM can be used as zone valve. When connected to the room controller with time programs, functions such as night setback, holiday mode, etc become available.
Danfoss Heating Solutions |
VDIGB102 |
© Danfoss |
08/2012 |
5 |
Loading...