Auxiliary heater control by outdoor temperature 2
This control selects heat pump or external heater according to the outdoor temperature. Even when
outdoor temperature is high, the heating is performed by using both of heat pump and external
heater.
Operation
Condition
Heater on
Heater is on as shown in following diagram of heating temperature.
Heater off
•
Heater is off as shown in following diagram of heating temperature.
•
Other than heating mode
•
Error occurred
•
Forced thermostat off
• Temperature of heater on (Thon): Adjustable by function number 62 (Operating temperature
switching of external heaters).
• All control temperatures will shift by adjusting “Thon”.
• Outdoor temperature zone boundary A: Adjustable by function setting number 66.
•
External heater output
Tr: Room temperature
Ts: Set temperature
Thon: Heater on temperature
Off
On
Tr-Ts ≥ 0.5°C
Tr-Ts
Tr-Ts (=Thon) ≤ -0.5°C
•
Outdoor temperature zone
Combination zone
(Heat pump + Heater)
Heat pump prohibition zone
(Heater)
A: -20°C*
A + 2°C: -18°C
Outdoor temp.
*: Adjustable by function setting 66
3-4. Details of function
- (05-30) -
3. External input and output (For indoor unit)
FIELD
WORKING
FIELD
WORKING
Содержание AOTG30KMTC
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Страница 5: ...1 GENERAL INFORMATION 2019 06 27 SR_CH01_AS004EF_01 ...
Страница 13: ...2 TECHNICAL DATA AND PARTS LIST 2020 05 12 SR_CH02_AS004EF_05 ...
Страница 35: ...3 TROUBLESHOOTING 2020 05 08 SR_CH03_AS004EF_02 ...
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Страница 128: ...6 2 Outdoor unit 03 90 6 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...
Страница 129: ...4 CONTROL AND FUNCTIONS 2020 05 08 SR_CH04_AS004EF_02 ...
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Страница 163: ...5 FILED WORKING 2019 07 24 SR_CH05_AS004EF_01 ...