Imi Heimeier Multibox 4 RTL Bedienungsanleitung Seite 7
Floor heating controller
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IMI HEIMEIER / Floor Heating Control / Mulibox 4
Technical data – Multibox 4 K-RTL
50
30
20
10
5
3
2
1
0,5
0,3
0,2
0,1
1
m [kg/h]
xp 2,0 K
Valve body with thermostatic head
P-band [xp] 1.0K
Kv-value
P-band [xp] 2.0K
Kv-value
Kvs
Kv/Kvs = m
/h at a pressure drop of 1 bar.
3
Sample calculation
To be found:
Setting range
Given:
Heat flow Q = 1308 W
Temperature spread Δt = 15 K (65/50 °C)
Pressure loss Multibox 4 K-RTL Δpv = 110 mbar
Solution:
Mass flow m = Q / (c · Δt) = 1308 / (1,163 · 15) = 75 kg/h
Setting range from Diagram:
With P-band max. 2.0 K: 4
Kv 0,025/
xp 0,5 K
1
3
2
5
10
20
1
2
3
0,049
0,082
0,130
0,049
0,090
0,150
0,049
0,102
0,185
2,5
4,5
1,5
3,5
5,5
2
3
4 5
6
7 8
50
30
100
200
300
Presetting
4
5
0,215
0,246
0,303
0,265
0,330
0,409
0,313
0,332
0,518
6,5
7,5
500
300
200
100
50
30
20
10
5
3
2
1
500
6
7
8
0,335
0,343
0,560
0,600
0,619
0,670
Kv
Cv =
0,86
Kv = Cv · 0,86
7
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