Install Instructions

18
Tech.Doc - 03/21 - Subject to change. © Belimo Aircontrols (USA), Inc.
Wiring Diagrams
ZIP Economizer
Multiple Actuator Configuration
When using the ZIP Economizer on a Rooftop Unit (RTU) that has more than one damper that is not mechanically linked, the ZIP Economizer can drive a maximum of (3)
-SR actuators. The actuators must be wired in parallel with the ACT3 output from the ZIP Economizer. The ACT5 feedback input on the ZIP Economizer should be wired to
the Outside Air Damper actuator feedback wire.
Wiring for the multiple actuator confi guration is shown in the illustration below; please ensure to follow all warnings and cautions listed in the actuator mounting
instructions. Any combination of TFB24-SR, LF24-SR, NFB24-SR, and AFB24-SR can be mounted in this arrangement.
1 Common
2 Hot
3 Y1 Input
5 U Output (Feedback)
1 Common
2 Hot
3 Y1 Input
5 U Output (Feedback)
1 Common
2 Hot
3 Y1 Input
5 U Output (Feedback)
ACT 1
ACT 2
ACT 3
ACT 5
Exhaust Air Damper
Return Air Damper
Outside Air Damper
ZIP Economizer I/O