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: Advanced Installation and Configuration Instructions
ecobee has an Auxiliary Savings Optimization algorithm with settings that are in language that is supposed to be homeowner friendly. Essentially this
setting determines how many degrees out of setpoint before auxiliary heat will be engaged. It starts at a half degree with Minimum, but up to 2.5
degrees if set on Maximum.
The Auxiliary Heat Maximum Outdoor Temperature specifies when the heat pump should be able to handle the heating load solo without the need for
auxiliary electric heat to assist. Aux heat will be locked out above this temperature.
The OpCost Calculator mentioned on page 13 above can be used to determine the "Thermal Break Point" based on the house load and the heat pump
model selected. The "Thermal Break Point" number often varies between 10 and 35 degrees. The default number is conservatively high at 35, and this
should be lowered for most modern systems.
Alternatively, the house's load profile can be manually plotted on the balance point worksheet in the product data book for each heat pump.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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