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5
HIGH TEMP. THERMISTOR
2. Buffer tank control
Buffer tank control operates when heating (or cooling) function is active in the smart grid ready*.
* Refer to the installation manual of indoor unit.
2.1 Wiring for buffer tank control
<Thermistor inputs>
Name
Terminal block
THW6
TBI.5 7-8
Thermistor (Zone1 flow water temp.) (Option)
THW7
TBI.5 5-6
Thermistor (Zone1 return water temp.) (Option)
THW10
TBI.6 5-6
Thermistor (Mixing tank water temp.)
<Signal inputs>
Name
Terminal block
IN11
TBI.3 3-4
Smart grid ready input
IN12
TBI.3 1-2
2.2 Dip switch setting
Set Dip SW2-6 to ON.
Dip switch
Function
SW2-6
Mixing tank
2.3 Main controller setting
<Service menu> → "Operation settings" → "Smart grid ready"
Name
Heating
Target temp.
Cooling
Target temp.
On/Off
Pump
cycles
Interval
Item
Item
IN11
OFF (open) OFF (open) Normal operation
ON (short)
OFF (open) ON (short)
ON (short)
OFF
WITHOUT Mixing tank
WITH Mixing tank
Target temp. of "Switch-on recommendation".
Target temp. of "Switch-on command".
Target temp. of "Switch-on recommendation".
Target temp. of "Switch-on command".
When set to "On", the water circulation pump is operated intermittently according
to the heat storage temp. of the buffer tank.
Re-judgment of the pump on/off time.
PAC-TH011-E
PAC-TH012HT-E
OFF (open)
IN12
OFF (open) Switch-on recommendation
Switch-off command
ON (short)
Switch-on command
ON
Description
Optional parts
Optional part model
ON (short)
Meaning
D-39
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