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Use the onboard LED flash code chart to determine if the lockout is due to flame failure
making it suitable for installation in ceiling cavities and air handling spaces according to NFPA 90A requirements
making it ideal for maintaining low-limit or circulator control in residential and light commercial applications
creating the turbulence needed for a clean
IO Hvac Controls iO-TWIN-TR Twinning Kit 30067439-890 Use the onboard LED flashThe iO TWIN TR Twinning Kit provides a reliable solution for technicians needing to synchronize two separate HVAC units from a single thermostat. Engineered for versatility, this universal twinning kit is compatible with single stage, multi stage, and heat pump equipment, whether configured on common or independent ductwork. The internal circuitry ensures seamless communication between units, and the system can be expanded to manage up to four units
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