Danfoss TDU.5 Data sheet
Data sheet
TDU.5 floor distribution unit
General description and application
Type 1 |
Type 2 |
The TDU.5 floor distribution unit is intended for two pipe horizontal heating systems and includes connecting, measuring, regulating and distribution functions.
The TDU.5 is easily installed on the wall surface and connected to the riser of heating system. The apartment horizontal heating systems are connected to the branches of the unit. Design of the TDU.5 provides convenient access to all the elements thus simplifies system adjustment. The TDU.5 floor distribution units are manufactured with 2–6 circuits
(left-hand / right-hand versions).
All manifolds are factory insulated with 13 mm elastomeric insulation.
Standard TDU.5 consists of:
On main manifolds DN50
•Automatic balancing valve – differential pressure controller ASV-PV
•Partner valve with flow limitation function ASV-BD
•Strainer
•Shut-off valves
•Drain
•Deairing
On branches DN15:
•Heat meter inserts for each apartment
•Type 1: Manual balancing valves USV-I
•Type 2: Control balancing valves RA-HC
The TDU.5 floor distribution units are manufactured with 2–6 circuits (left-hand / right-hand versions).
Accessories:
•Cabinets
•TWA actuators for RA-HC
•Room thermostats
•Energy meters
General operating |
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Design temperature, °C |
95 |
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parameters |
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Design pressure, bar |
10 |
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Test pressure, bar |
16 |
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Maximum differential pressure in the risers, bar |
1,5 |
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Setting of differential pressure in the apartment |
5 – 25 |
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heating system, kPa |
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Connection to the risers (3 variants) |
Rp ¾; Rp 1; Rp 1¼ |
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Connection to heating system of apartments |
Rp ½ – return line |
© Danfoss | 2021.09 |
AI378433154991en-010103 | 1 |
Data sheet |
TDU.5 floor distribution unit |
Designation |
TDU.5 - 4L - 25 - ASVBD20 - ASVPV20 - USVI15 |
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Balancing in each circuit |
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USVI15 – manual balancing valve |
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RAHC15 – control balancing valve |
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Automatic balancing valve |
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ASPV15; ASPV20; ASPV25 |
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Partner valve |
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ASVBD15; ASVBD20; ASVBD25 |
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Connection to risers |
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(20 – RP ¾; 25 – RP 1; 32 – RP 1¼) |
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Execution (L – left-hand / R – right-hand) |
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Number of circuits (from 2 to 6)* |
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Floor distribution units generation (TDU.5) |
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* more circuits are available on request |
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Code numbers |
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Type 1 |
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Code |
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Designation |
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Circuits |
Execution |
Connection |
DN ASV-PV / |
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Branch |
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to risers |
ASV-BD |
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152F0275 |
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TDU.5 2L-20-ASVBD15-ASVPV15-USVI15 |
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2 |
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left |
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RP ¾” |
15 |
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USV-I |
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152F0276 |
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TDU.5 3L-25-ASVBD20-ASVPV20-USVI15 |
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3 |
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left |
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RP 1” |
20 |
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USV-I |
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152F0277 |
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TDU.5 4L-25-ASVBD20-ASVPV20-USVI15 |
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4 |
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left |
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RP1” |
20 |
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USV-I |
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152F0278 |
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TDU.5 4L-32-ASVBD25-ASVPV25-USVI15 |
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4 |
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left |
RP 1¼” |
25 |
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USV-I |
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152F0279 |
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TDU.5 5L-32-ASVBD25-ASVPV25-USVI15 |
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5 |
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left |
RP 1¼” |
25 |
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USV-I |
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152F0280 |
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TDU.5 6L-32-ASVBD25-ASVPV25-USVI15 |
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6 |
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left |
RP 1¼” |
25 |
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USV-I |
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Code |
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Designation |
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Circuits |
Execution |
Connection |
DN ASV-PV / |
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Branch |
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to risers |
ASV-BD |
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152F0281 |
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TDU.5 2R-20-ASVBD15-ASVPV15-USVI15 |
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2 |
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right |
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RP ¾” |
15 |
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USV-I |
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152F0282 |
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TDU.5 3R-25-ASVBD20-ASVPV20-USVI15 |
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3 |
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right |
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RP 1” |
20 |
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USV-I |
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152F0283 |
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TDU.5 4R-25-ASVBD20-ASVPV20-USVI15 |
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4 |
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right |
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RP1” |
20 |
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USV-I |
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152F0284 |
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TDU.5 4R-32-ASVBD25-ASVPV25-USVI15 |
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4 |
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right |
RP 1¼” |
25 |
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USV-I |
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152F0285 |
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TDU.5 5R-32-ASVBD25-ASVPV25-USVI15 |
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5 |
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right |
RP 1¼” |
25 |
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USV-I |
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152F0286 |
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TDU.5 6R-32-ASVBD25-ASVPV25-USVI15 |
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6 |
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right |
RP 1¼” |
25 |
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USV-I |
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Type 2 |
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Code |
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Designation |
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Circuits |
Execution |
Connection |
DN ASV-PV / |
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Branch |
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to risers |
ASV-BD |
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152F0287 |
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TDU.5 2L-20-ASVBD15-ASVPV15-RAHC15 |
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2 |
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left |
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RP ¾” |
15 |
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RA-HC |
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152F0288 |
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TDU.5 3L-25-ASVBD20-ASVPV20-RAHC15 |
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3 |
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left |
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RP 1” |
20 |
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RA-HC |
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152F0289 |
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TDU.5 4L-25-ASVBD20-ASVPV20-RAHC15 |
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4 |
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left |
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RP1” |
20 |
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RA-HC |
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152F0290 |
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TDU.5 4L-32-ASVBD25-ASVPV25-RAHC15 |
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4 |
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left |
RP 1¼” |
25 |
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RA-HC |
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152F0291 |
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TDU.5 5L-32-ASVBD25-ASVPV25-RAHC15 |
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5 |
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left |
RP 1¼” |
25 |
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RA-HC |
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152F0292 |
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TDU.5 6L-32-ASVBD25-ASVPV25-RAHC15 |
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left |
RP 1¼” |
25 |
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RA-HC |
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Code |
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Designation |
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Circuits |
Execution |
Connection |
DN ASV-PV / |
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Branch |
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to risers |
ASV-BD |
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152F0293 |
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TDU.5 2R-20-ASVBD15-ASVPV15-RAHC15 |
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2 |
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right |
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RP ¾” |
15 |
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RA-HC |
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152F0294 |
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TDU.5 3R-25-ASVBD20-ASVPV20-RAHC15 |
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3 |
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right |
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RP 1” |
20 |
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RA-HC |
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152F0295 |
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TDU.5 4R-25-ASVBD20-ASVPV20-RAHC15 |
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4 |
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right |
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RP1” |
20 |
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RA-HC |
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152F0296 |
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TDU.5 4R-32-ASVBD25-ASVPV25-RAHC15 |
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4 |
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right |
RP 1¼” |
25 |
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RA-HC |
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152F0297 |
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TDU.5 5R-32-ASVBD25-ASVPV25-RAHC15 |
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5 |
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right |
RP 1¼” |
25 |
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RA-HC |
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152F0298 |
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TDU.5 6R-32-ASVBD25-ASVPV25-RAHC15 |
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6 |
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right |
RP 1¼” |
25 |
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RA-HC |
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2 | © Danfoss | 2021.09 |
AI378433154991en-010103 |
Data sheet |
TDU.5 floor distribution unit |
Construction |
Ball valve with fitting. |
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1. |
Shut-off valve |
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2. |
Strainer |
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3. |
Partner valve ASV-BD |
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4. |
Manifold |
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5. |
Shut-off valve |
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6. |
Automatic balancing valve ASV-PV. |
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Drain valve |
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8. |
Clamp |
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9. |
Insert for heat meter DN15, L=110 mm. |
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10. |
Balancing valve (USV-I/RA-HC) |
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11. |
Manual air vent |
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12. |
Drain valve |
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13. |
Fitting for impulse tube connection. (In case |
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there is no partner valve) |
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Fitting for temperature sensor connection |
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15. |
Insulation |
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3 |
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15 |
11 |
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4 |
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12 |
5 |
15 |
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8 6 
9
10
Dimensions
W |
D |
*200 mm. |
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H |
DN |
Height H, mm * |
Maximum |
Maximum width W, mm * (depending on number if circuits) |
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insret |
Left |
Right |
depth D, |
2 |
3 |
4 |
5 |
6 ** |
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mm * |
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group |
connection |
connection |
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20 |
533 |
533 |
177 |
568 |
668 |
768 |
868 |
968 |
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25 |
536 |
536 |
177 |
597 |
697 |
797 |
897 |
997 |
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32 |
539 |
539 |
188 |
640 |
740 |
840 |
940 |
1040 |
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*Overall dimensions in width, depth and height depend on the installation position.
It is allowed to mount the unit without a casing with the collectors displaced vertically and horizontally within the length of the ASV-PV impulse tube, while maintaining the possibility of its mounting and dismounting (impulse tube length is 1.5m). The minimum recommended vertical distance between manifolds is 200 mm.
**More circuits are available on request
AI378433154991en-010103 |
© Danfoss | 2021.09 | 3 |
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