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4.2.6 Control by Field-Supplied Room Thermostat (Except for KPI Series)
In the case that a field-supplied room thermostat instead of the inlet thermistor of the indoor unit is used,
connect wires as shown below. The required parts are shown in Table 4.5.
(In Case of "Room Thermostat (Cooling)" Input to 2# and 3# of CN3 and "Room Thermostat (Heating)"
Input to 1# and 2# of CN3 according to the item 4.2.1)
Operation
Cooling Operation:
Compressor is ON by closing terminals 2 and 3 at CN3
Compressor is OFF by opening terminals 2 and 3 at CN3
Heating Operation:
Compressor is ON by closing terminals 1 and 2 at CN3
Compressor is OFF by opening terminals 1 and 2 at CN3
Component
Thermostat
NOTES:
1. When setting the dip switch DSW2, turn OFF power source and set the dip switch. If the dip switch is
set without turning OFF the power source, it does not correctly function.
2. When a field-supplied room thermostat is used, select the specified thermostat as below.
Contactor Load:
Differential: more than 1.5 degree
3. Do not use a thermostat utilizing mercury.
4. This function can be used together with "4.2.3 Remote Control ON/OFF Function".
Table 4.5 Specifications on Required Components
Manufacturer or Specifications
Equivalent of YAMATAKE R7031P005, R7031Q005
DC12V
OPTIONAL FUNCTION
(4.2 Indoor Unit)
4-19
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