Notice:
Conventional thermostats are not support on Symbio 400-B/500 or UC controls.
At minimum, the unit needs a 10k type 2 thermistor wired to the Zone Temp & GND/Common terminals for operation.
The diagram details shown below are generic. See unit IOM Wiring Diagram section for unit specific connections.
Click the e-library symbol for the latest version the sensor IOM which include complete installation and terminations.
| Control Type | Diagram Detail | Connection Detail |
| Symbio 400-B |
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The Terminal Plug (TP) will be inside the control panel or outside of the control panel routed from a passthrough plug. Terminal designations are printed on the side of the plug. |
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Connections shown are specific to the wired temperature sensor with an LCD display. Unit control orientation will vary vs the diagram detail shown.
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| Symbio 500 & UC400 |
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Look for a large terminal block on the left or right side of the control panel. Terminal designations will be embossed on the block. |
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Connections shown are specific to the wired temperature sensor with an LCD display.
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WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.