Label the intended relationships.
Record the room/unit names and which controller is meant to address each one.
HVAC · Kingston, Washington
HVAC in Kingston with several indoor units needs a clear map of which controller addresses which receiver.
More handsets do not by themselves establish independent control. Ask the installer to demonstrate the intended separate or grouped response for the actual equipment.

Heating and cooling
Have the installer identify the supplied controllers and the indoor receivers assigned to them. Demonstrate the intended response at each unit and keep the pairing or grouping information with the handover record. If an unexpected unit responds, report the observed behavior before changing installer settings or assuming another handset will solve it.
Record the room/unit names and which controller is meant to address each one.
Ask the installer to check the actual receivers and any intended group operation.
Retain the equipment instructions and service contact for a pairing or grouping concern.
Before work begins
Use the County process for the actual equipment and associated work. Confirm any changed unit locations, connections and electrical review with the responsible providers and DCD.
Controller addressing does not establish whether the system can heat and cool different rooms simultaneously. Ask about that separate capability if it matters to the household.
Have the installer demonstrate which receivers actually respond.
Ask about the actual system’s operating capability separately from controller addressing.
Use the responsible installer and the correct equipment instructions.
Tell us which units or rooms should respond together or separately.