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Toshiba
8-2.
Operation
Mode and
Control Method
3)Cooling operation
Pressing the [ZONE1, 2] button and then [OPERATION MODE] starts a cooling operation.
1) Operation start condition
Pressing the [ZONE1, 2] button and then [OPERATION MODE]
starts a cooling operation.
2) Operation mode selection
An operation mode is determined according to the temperature
of TWI sensor.
• Heat pump operation selection *1 *2
When TWI TSC_F (d zone in the right figure) is met, the heat
pump operation is selected.
• Thermostat status "OFF"
When TWI < TSC_F (e zone in the right figure) is met, the
thermostat status "OFF" is selected.
3)Operation stop condition
When either of the following conditions is met, the cooling
operation stops.
• The remote controller gives a stop instruction.
• The operation is switched to heating.
*1: When the outside temperature is 10°C or below, cooling does
not start even if the TWI temperature falls into "d zone".
Related FC
4)Simultaneous operations of "hot water supply" and "heating"
At the time of "Hot water supply" and "Heating" simultaneous
operation, the operation mode is select as follows depending on
the outside air temperature.
• f zone Operation with hot water supply priority
A heat pump operation is performed in the hot water supply side,
and a heating operation in the heating side.
• g zone Operation with heating priority
A heat pump operation is performed in the heating side, and a
heating operation in the hot water supply side.
Operation mode by zone
* Note that after a heat pump operation for "Hot water supply" is selected in f zone, when the operation moves to a
heater operation for "hot water" and then 5 minutes has passed (Hot water supply operation in b zone), the operation
mode changes as follows.
When TTW 45°C (FC: changeable) is met, the operation ends f' zone and returns to f zone.
Related FC
* Note: When user selects “hot water supply” and “ZONE1,2”, and Heat pump selects hot water supply mode, the
Maximum operating time of heat pump is 30 mins.
Item Operation flow and applicable data, etc.
TWI
TSC_F
(Temperature set with
remote controller)
TSC_F
Thermostat off operation
Heat pump operation
(cooling)
e zone
Diff : 2k
d zone
TSC is a cooling temperature
set with the remote controller
FC No. Setting item Default Setting available range
02 Cooling mode availability 1: No 0: Yes
18 Upper limit of cooling setting temperature 25 18-30°C
19 Lower limit of cooling setting temperature 10 10-18°C
Zone Hot water supply side Heating side
f Heat pump * Stop *
g Heater Heat pump
h Heater Heater
D
(Note)
-20
Diff : 5deg
f zone
h zone
Diff : 5deg
g zone
Heater operation
Hot water
supply heat
pump priority
operation
Heating heat
pump priority
operation
TO
Zone Hot water supply side Heating side
f' Heater Heat pump
FC No. Setting item Default Setting available range
07
Maximum HP operation time in “hot water supply” + “heating
mode”
30 min 0-120min
22 Priority mode switch temperature (D) 0 -20-20°C
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 41 Monday, October 5, 2009 2:09 PM