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EEC Control
EEC Settings are used to configure Heat and Cool Energy Efficient Control (EEC) and the Auxiliary
Heat Differential (when configured as a heat pump thermostat).
EEC: configures Energy Efficient Control. EEC continually monitors the performance of the HVAC system
and uses a PID algorithm and auto balance routine to achieve comfort while saving energy. A setting of 0
will disable EEC. When EEC is disabled, the EER56000 thermostat will attempt to maintain the
temperature within 0.5 °F of the setpoint.
A lower setting of 2–3 can be used for slow reacting sources (for example, radiant heat) and a higher
setting of 7–8 for fast reacting sources (for example, forced air). The default setting is 5.
On heat pump systems, EEC allows the EER5600 thermostat to use auxiliary heat only when
necessary. If it determines that the heat pump is able to heat at a rate of 5 degrees per hour or better,
the auxiliary heat will not be used. If the heat pump is unable to heat at this rate, the thermostat will use
the auxiliary heat as needed. Under these conditions, the heat pump will run continuously and the
auxiliary heat will cycle on and off as needed.
Auxiliary Heat Differential: determines how far from the setpoint the temperature must be before the
auxiliary heat turns on. This is only available for heat pump systems.
Start Delay (Minutes): sets the minimum amount of time the heating system must run before the
Auxiliary Heat Stage is used. To use start delay, EEC must be enabled and Hold must be off.
EEC
Settings
Conventional (1 Cool / 1 Heat)
Heat Pump (1 Cool / 2 Heat)
Dual Fuel Heat Pump (1 Cool / 2 Heat)
Heat EEC
*5
0–10
Heat EEC
*5
0–10
Cool EEC
*5
0–10
Cool EEC
*5
0–10
—
Aux. Heat Differential *2
1–10
Start Delay (Minutes) *5
0–4 hr:15 min
An asterisk (*) next to a setup item indicates the default (factory) setting.