Lennox CBX40UHV Series Unit Information page 41

®
5. EvenHeater Operation
INPUTS
Room Thermostat Demand
Y1
Y1 + Y2
Y1 + W1 and/or W2
Y1 and Y2 + W1 and/or W2
W1 and/or W2
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?
Timer delays for
120 seconds
CBX40UHV
Target Discharge Air
Temperature Set at 85ºF
Heat Pump First Stage
Heat Pump First and Second
Stage
Heat Pump First Stage + First
Electric Heat Section (H1)
Heat Pump First and Second
Stage+ First Electric Heat Sec-
tion (H1)
First Electric Heat Section (H1)
Yes
No
Last room thermostat Heat
One Stage
up− staging action
Figure 36. EvenHeater
OUTPUTS
Target Discharge Air
Temperature Set at 100ºF
Heat Pump First Stage
Heat Pump First and Second
Stage + First Electric Heat Section
(H1)
Heat Pump First Stage + First
Electric Heat Section + Second
Electric Heat Section (H2) if num-
ber of electric heater sections de-
tected is more than two.
Heat Pump First and Second
Stage + First Electric Heat Section
+ 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 sec-
tions detected is more than two.
Increase target discharge air temperature by 15Fº
More than one stage
A
®
Operation
Page 41
Target Discharge Air
Temperature Set at 115ºF/130ºF
Heat Pump First + First Electric
Heat Section (H1)
Heat Pump First and Second
Stage + First Electric Heat Section
(H1) + Second Electric Heat Sec-
tion (H2) if number of electric heat-
er sections detected is more than
two.
Heat Pump First Stage + First
Electric Heat Section (H1) Second
Electric Heat Section (H2) if num-
ber of electric heater sections de-
tected 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.
First Electric Heat Section (H1) +
Second Electric Heat Section (H2)
if number of electric heater sec-
tions detected is more than two.
Timer delays for 150
seconds