Belimo EPIV Series User Manual

V3.3 07.2016•Subject to modifi cation
UL marked actuators is optional, please contact your local Sales Representative for details.
13
Inlet section
In order to achieve the specified measuring accuracy, a flow-calming section or inflow
section in the direction of the flow is to be provided upstream from the measuring pipe
flange. Its dimensions must be at least 5 x DN.
L ≥ 5 x DN
DN L min.
15 5 x 15 mm = 75 mm
20 5 x 20 mm = 100 mm
25 5 x 25 mm = 125 mm
32 5 x 32 mm = 160 mm
40 5 x 40 mm = 200 mm
50 5 x 50 mm = 250 mm
DN L min.
65 5 x 65 mm = 325 mm
80 5 x 80 mm = 400 mm
100 5 x 100 mm = 500 mm
125 5 x 125 mm = 625 mm
150 5 x 150 mm = 750 mm
L ≥ 5 x DN
Valve design
The valve is determined using the maximum flow required
max.
A calculation of the kvs value is not required.
max = 30…100% of nom
If no hydraulic data are available, then the same valve DN can be selected as the heat
exchanger nominal diameter.
Minimum differential pressure
(Pressure drop)
The minimum required differential pressure (pressure drop via the valve) for achieving the
desired volumetric flow
max can be calculated with the aid of the theoretical kvs value (see
type overview) and the below-mentioned formula. The calculated value is dependent on the
required maximum volumetric flow
max. Higher differential pressures are compensated for
automatically by the valve.
Formula
∆p
min
= 100 x

max
k
vs theor.
2
∆p
min
: kPa

max
: m
3
/h
k
vs theor.
: m
3
/h
Example (DN25 with the desired maximum flow rate = 50% nom)
Example (DN100 with the desired maximum flow rate = 50%
nom)
EP..R+MP / P6..W..E-MP
Installation notes
General information
DN L min.
15 5 x 15 mm = 75 mm
20 5 x 20 mm = 100 mm
25 5 x 25 mm = 125 mm
32 5 x 32 mm = 160 mm
40 5 x 40 mm = 200 mm
50 5 x 50 mm = 250 mm
L ≥5xDN
L ≥5xDN
DN L min.
65 5 x 65 mm = 325 mm
80 5 x 80 mm = 400 mm
100 5 x 100 mm = 500 mm
125 5 x 125 mm = 625 mm
150 5 x 150 mm = 750 mm
min
= 100 x
max
k
vs theor.
2
= 100 x= 10 kPa
36 m
3
/h
115 m
3
/h
2
kvs theor. = 115 m /h
50% * 1200 l/min = 600 l/min = 36 m /h
3
3
min
= 100 x
max
k
vs theor.
2
= 100 x= 6 kPa
2.07 m
3
/h
8.6 m
3
/h
2
kvs theor. = 8.6 m
/h
50% * 69 l/min = 34.5 l/min = 2.07 m /h
3
3
EP025R+MP
P6100W2000E-MP

Belimo EPIV Series Specifications

General

Brand	Belimo
Model	EPIV Series
Category	Control Unit
Language	English