Outline of Control (Indoor Unit)
SiUS331708EA
83
Functions and Control
Note:
The airflow rate during gas furnace operation depends on the intensity of combustion heating and
therefore may be different from the airflow setting displayed on the remote controller.
6.14 3-Step Thermostat Processing (FXTQ-TA Models)
Outline
The thermostat ON/OFF for the indoor unit is controlled in accordance with Thermostat step 1.
The heater ON/OFF operation during heating is controlled as follows.
Thermostat step 2, 3: Auxiliary electric heater control
Thermostat step 1, 2: Heat pump lockout control
For more details of the heater, refer to
Heater Control (FXTQ-TA Models)
Detail
Notes:
∗
1.
S
value varies automatically based on the room temperature trend.
∗
2. Ton +
S
> –
B
(°C), Toff +
S
<
A
(°C)
∗
3. For parameters, refer to page 97.
∗
4.
A
and
B
values vary automatically based on the field setting 12(22)-2.
∗
5. If, directly after a change in conditions, it is such that the thermostat could be either ON or OFF
(controlled temperature is within ranges
A
and
B
), the thermostat will be switched to ON.
&
•
No errors (except errors in which the system keeps operating)
has occurred.
•
Remote controller ON
• Thermostat step 1: OFF
• Thermostat step 2: OFF
• Thermostat step 3: OFF
Other conditions
Perform the processing in
the following chart. (
∗
5)
(1) Cooling
(2) Heating
Thermostat step 2
Thermostat step 1
ON
OFF
ON
OFF
2+
S
(
∗
1)
4+
S
(
∗
1)
A
(
∗
4)
B
(
∗
4)
Controlled temperature
(Tcon)(˚C)
Set temperature (Ts’)
Thermostat step 3
Thermostat step 2
Thermostat step 1
ON
OFF
ON
OFF
ON
OFF
1.5
1.5
Toff+
S
(
∗
1,2,3)
Ton+
S
(
∗
1,2,3)
A
(
∗
4)
B
(
∗
4)
Set temperature (Ts’)
Controlled
temperature
(Tcon)(˚C)
Содержание RXSQ24TAVJU
Страница 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
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Страница 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
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