Modvlvs Heat Exchange Pump Units

S1: Outdoor temperature sensor
S2: Flow temperature sensor
S5: Ambient temperature sensor DD2 (option)
R1: Mixed circuit circulating pump (secondary)
M: 3-way motorised mixing valve of the mixed circuit (secondary) with built-in controller
F: Thermic valve of the boiler circuit (primary)
R2: Boiler circuit circulating pump (primary)
E: Plates heat exchanger


Application


For powers up to:

16kW

20kW

24kW

Exchanger number of plates

16

26

40

Mixed circuit flow (secondary) * (max)

1.4m3/h

1.7m3/h

1.9m3/h

Headloss of the mixed circuit (secondary) * (max)

0.05m H2O

Kv=4.5

0.08m H2O

Kv=6

0.1m H2O

Kv=6

Exchanger headloss * (max)

0.09m H2O

Kv=4.5

0.09m H2O

Kv=5.7

0.09m H2O

Kv=6.4

Total headloss of the mixed circuit (secondary). Pump unit + exchanger * (max)

0.14m H2O

Kv=3.7

0.17m H2O

Kv=4.1

0.19m H2O

Kv=4.4

Type of boiler circulating pump (primary)/mixed(secondary). Nominal lifting power in meters:

4/6

6/7

6/7

Residual lifting power of the mixed circuit (secondary) in meters

4

5.4

5.3

* : Headloss related to the maximum flow of the mixed circuit (secondary)
NB: This information is provided as a guide only.  They are based on a ΔT of 10oC between the flow and the return (in both the circuits) and on the average performances of the circulating pumps, the data must be checked with Radiant Control Ltd. taking into consideration the specifications of the installation that is to be carried out.

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