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8-2.
Operation
Mode and
Control Method
2)Heating operation
<Operation only for ZONE1>
• This operation is enabled when DP_SW12_2 ZONE1 is set to "ON" (default).
• The remote controller displays settings, and only the set temperature of can be changed.
<Operation for ZONE1 and ZONE2 (2 temperatures control)>
• This operation is enabled when DP_SW12_2 ZONE1 is set to "ON" (default) and DP_SW12_3 ZONE2 to "ON".
• The remote controller displays settings, and the set temperatures of
can be changed.
• To set temperatures for and , use SELECT to switch and
.
• For 2 temperatures control, the flow adjustment of MIXING VALVE controls the water temperature of . For
details,
see the description on MIXING VALVE control in 8-3-5.
1)Operation start condition
Pressing the [ZONE1, 2] button of remote controller starts a
heating operation. *1 *2
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 the following condition is met, the heating operation stops.
• The remote controller gives a stop instruction.
*1: When the outside temperature is -20°C or below, the heater
operation is selected even if the TTW temperature falls into "d
zone".
*2: When "Hot water supply" and "Heating" are simultaneously in
operation, the heater operation may be selected depending on
the outside air temperature.
Related FC
Item Operation flow and applicable data, etc.
TWI
TSC_F
C_f = 0
Thermostat off
operation
e zone
d zone
diff2K
Heat pump operation
TSC_F is a heating temperature
set with remote controller
FC No. Setting item Default Setting available range
1A Upper limit of heating (Zone1) limited temperature 55 37-55°C
1B Lower limit of heating (Zone1) limited temperature 20 20-37°C
1C Upper limit of heating (Zone2) limited temperature 55 37-55°C
1D Lower limit of heating (Zone2) limited temperature 20 20-37°C
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 40 Monday, October 5, 2009 2:09 PM