Imi Heimeier Multibox 4 RTL Bedienungsanleitung Seite 8

IMI HEIMEIER / Floor Heating Control / Multibox 4
Technical data – Multibox 4 RTL
30
20
10
5
3
2
1
0,5
0,3
0,2
0,1
5
m [kg/h]
(xp 2 K )
Controller with valve body DN 15
0,25 0,5
0,20 0,25
Kv/Kvs = m /h at a pressure drop of 1 bar.
3
Sample calculation
To be found:
Preset figure Multibox 4 RTL
Given:
Thermal flux Q = 1025 W
Temperature spread Δt = 8 K (44/36° C)
Pressure loss Multibox 4 RTL Δp
Solution:
Mass flow m = Q / (c · Δt) = 1025 / (1,163 · 8) = 110 kg/h
Preset figure from diagram: 5
8
[U] 0,25
10 20 30 50
Kv-value
Multibox 4 RTL
Preset rotations [U]
Regulating spindle
1,0
0,31
= 22 mbar
V
0,5 1 2 3 4 5
100 200 500
300
2,0 3,0
0,40 0,47
300
200
100
50
30
20
10
5
3
2
1
1000
Kvs
4,0 5,0
0,58 0,74
Kv
Cv =
0,86
Kv = Cv · 0,86