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evenheAt operAtion
Room Thermostat Demand
Target Discharge Air
Temperature Set at 85ºF
Target Discharge Air
Temperature Set at 100ºF
Target Discharge Air
Temperature Set at 115ºF/130ºF
Y1 Heat Pump First Stage Heat Pump First Stage
Heat Pump First + First Electric
Heat Section (H1)
Y1 + Y2
Heat Pump First and Second
Stage
Heat Pump First and Second Stage
+ First Electric Heat Section (H1)
Heat Pump First and Second Stage
+ First Electric Heat Section (H1) +
Second Electric Heat Section (H2)
if number of electric heater sections
detected is more than two.
Y1 + W1 and/or W2
Heat Pump First Stage + First
Electric Heat Section (H1)
tric Heat Section + Second Electric
Heat Section (H2) if number of
electric heater sections detected is
more than two.
tric Heat Section (H1) Second
tected is more than two.
Y1 and Y2 + W1 and/or W2
Heat Pump First and Second
Stage+ First Electric Heat Section
(H1)
Heat Pump First and Second Stage
ond Electric Heat Section (H2) if
number of electric heater sections
detected is more than two.
Heat Pump First and Second Stage
+ First Electric Heat Section (H1)
Second Electric Heat Section (H2)
if number of electric heater sections
detected is more than two.
W1 and/or W2 First Electric Heat Section (H1)
First Electric Heat Section (H1) +
Second Electric Heat Section (H2)
if number of electric heater sections
detected is more than two.
First Electric Heat Section (H1) +
Second Electric Heat Section (H2)
if number of electric heater sections
detected is more than two.
Heat pump first or second stage or electric heat demand will start the air handler
control indoor blower at CFM value based on tables found in installation
instructions.
Heat Pump and electric heat
demand?
Increase target discharge air temperature by 15Fº
Last room thermostat Heat
up- staging action
Timer delays for
120 seconds
Timer delays for 150
seconds
A
One Stage More than one stage
No
Yes
Figure 9. EVENHEAT Operation (1 of 2)
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