Belimo CRA24 Series, Product Information

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CRA24-... • en-gb • 2013-05-15 • Subject to changes
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Technical data sheet CRA24-..
Analogue outputs
VAV controller connection
Due to the override function, it is mandatory that the supply and exhaust air control devices be
connected as follows:
– Supply air: System output "ao1" (terminal 6), diagnostic connection "U5 / 1" (terminal 7)
– Exhaust air: System output "ao2" (terminal 11), diagnostic connection "U5 / 2" (terminal 8)
1 2 9 10 11 6 7 8
3 4 12
CRA24-B3
ai/di1 di2 di3 ao1 ao2 ao3 U5 1 U5 2
AC 24 V
T
~
1 2 3 5
Y U
T
~
1 2 9 10 11 6 7 8
3 4 12
CRA24-B3
ai/di1 di2 di3 ao1 ao2 ao3 U5 1 U5 2
AC 24 V
T
~
1 2 3 5
Y U
T
~
Heating valve connection
1 2 3 4 5 6
ON
OFF
Heating valves can be controlled using a 2-point or a 3-point actuator. This selection is made
using DIP switch 6. OFF = 2-point (thermo) / ON = 3-point
1 2 9 10 11 6 7 8
3 4 12
CRA24-B3
ai/di1 di2 di3 ao1 ao2 ao3 U5
1
U5
2
AC 24 V
T
~
1 2
T
~
1 2 9 10 11 6 7 8
3 4 12
CRA24-B3
ai/di1 di2 di3 ao1 ao2 ao3 U5
1
U5
2
AC 24 V
T
~
1 2 3
T
Supply air Exhaust air
Thermo valve actuator 3-point valve actuator
Functions
CRA24-B3(P)