Siemens AEROGYR RWI65.01 - Economizer Operation; Control Sequences

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
3205D03E
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
00
B4 < B1
∆
T
10
0
2 K2 K
Y30
[V]
Y30
[V]
Y30
[V]
∆
T
T
3205D07E
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
3204D04E
(DtPnt 21)
(DtPnt. 20)
SA
Y30
min
(DtPnt 6)
Economizer operation
Control sequences
Function diagram 1