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12.13 Electric Heater Control 1
Starting
condition
o
When all condition (1+2+3+4+5+6+7) are fulfilled.
Operation
ON
Indoor
Heating
mode
Thermostat
ON
Temperature
different
control
Example:
a. When air conditioning is switch ON,
Remote controller setting = 82.4°F (28°C)
Intake air temperature = 78.8°F (26°C)
Temp difference = 82.4°F (28°C) - 78.8°F (26°C) = 3.6°F (2°C)
Heater ON
b. After a while when
Remote controller setting = 82.4°F (28°C)
Intake air temperature = 80.6°F (27°C)
Temp difference = 82.4°F (28°C) - 80.6°F (27°C) = 1.8°F (1°C)
Heater OFF
c. After a while when
Temp difference
≥
7.2°F (4°C)
Heater ON
Intake air temperature control
Evaporator pipe sensor control
Indoor Fan speed
≥
Lo Fan
Control
content
o
Electric heater will be switch ON when all condition for starting condition fulfilled.
o
Once Electric heater switched ON, It will operate at least 3 minutes.
When air conditioning is
switched ON
Heater ON
Temp difference
(Remote controller setting -
Intake air temperature)
7.2 (4)
1.8 (1)
Heater OFF
ON by
Temp difference
≥
7.2°F (4°C)
OFF by
Temp difference
≤
1.8°F (1°C)
°F (°C)
When air conditioning is
switched ON
Heater ON
Heater OFF
84.2 (29)
Intake air temperature [°F (°C)]
78.8 (26)
When air conditioning is
switched ON
Heater ON
Heater OFF
140.0 (60) (
β
)
Evaporator pipe sensor
[°F (°C)]
132.8 (56) (
α
)