CM2N3205E / 05.2001
Siemens Building Technologies
4/18
Landis & Staefa Division
– Minimum and maximum limitation of the supply air temperature are automatically
activated
Y20
Y10
Y30
∆
R
Y20
Y10
Y30
w
C
KE =
∆
Z /
∆
R
KE =
∆
Z /
∆
R
x
Z
∆
Z
w
Z
x
Z
w
Z
x
R
x
R
w
LH
w
LL
w
Z
w
C
w
H
w
LH
w
LL
w
Z
∆
Z
w
H
x
R
x
R
32
0
5
D
0
3E
Heating mode
Cooling mode
Based on the measured difference of outside and extract air temperature, the plant is
operated with reduced fresh air supply or heat recovery. Prerequisites for activation:
•
DIL switch 4 (economizer) set to OFF (=YES)
•
Outside and extract air temperature sensors connected
10
0
T
B4 < B1
B4 > B1
B4 > B1
10
0
10
0
Y30
[V]
min
Y30
min
Y30
0
0
B4 < B1
∆
T
10
0
2 K
2 K
Y30
[V]
Y30
[V]
Y30
[V]
∆
T
T
3
205
D
0
7
E
Mixing dampers
HR system
The RWI65.01 allows control sequences with both operating actions for air
dampers/heat recovery. The operating action is selected with DIL switches 5 - 7.
Application with mixing air dampers
Y
[%]
100
Y10
Y30
Y20
SD
T
w
h
w
c
X
P1
T
n1
X
P3
T
n3
X
P2
T
n2
32
04
D
0
4
E
(DtPnt 21)
(DtPnt. 20)
SA
Y30
min
(DtPnt 6)
Economizer operation
Control sequences
Function diagram 1
