Connections to external functions cont'd
Terminal
block
Description
Remark
74
3
DI 4
Extended running
Normally open contact
Use terminal 4 as reference
75
3
DI 5
Fire alarm
Normally open contact
Use terminal 4 as reference
76
3
DI 6
External stop
Normally open contact
Use terminal 4 as reference
90
Agnd
AO Reference
neutral
93
AO 3
Control signal 0-10V valve actuator,
Water Heating
Use terminal 90 as reference
94
AO 4
Control signal 0-10V valve actuator,
Cooling
Use terminal 90 as reference
1.
Maximum current load for all DO combined: 8A
2.
Connection to external pressure sensor in case of pressure controlled unit (VAV)
3.
These inputs may only be wired to voltage free contacts
Topvex SR 09, 11, TR 09-15
Installation instructions
207577
17
Systemair AB