RCU50U and RCU50.2U Room Temperature Controllers Technical
Instructions
For VAV Systems
Document Number 155-327P25
Rev. 1, March, 2002
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as
design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners.
© 2002 Siemens Building Technologies, Inc.
Siemens Building Technologies, Inc.
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
U.S.A.
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Document No. 155-327P25
Printed in the U.S.A.
Page 11
Wiring Diagrams
G
G0
7
D1 GND
6
4
5
1
2
3
1mA
max.
24 V
A
C
TH0638R1
G
G0
7
6
24 V
AC
5
4
1mA
max.
TH0637R1
Figure 14. RCU50U Wiring Diagram.
Figure 15. RCU50.2U Wiring Diagram.
1
Signal input set point shift
2 Measuring
neutral
3
Heat/cool "changeover sensor" input
4
0 to 10 Vdc control signal
5
Ground for control signal
6
Operating voltage, 24 Vac negative
7
Operating voltage, 24 Vac positive
D1
Signal input for potential-free
operating mode changeover switch
G
24 Vac, digital input
G0 24
Vac
GND Ground
Dimensions
4.49
(114.15)
TH0575R1
3.80
(96.6)
1.69
(42.8)
TH0576R1
0.16 (4)
1.10
(28)
1.10
(28)
1.02
(26)
1.18
(30)
1.38
(35)
0.46
(11.8)
0.16
(4)
4.09
(104)
3.34
(90)
1.18
(30)
1.10
(28)
1.10
(28)
0.16 (4)
Figure 16. Controller and Baseplate Dimensions in Inches (Millimeters).
