This optional signal is used to pick up the heating operation signal. The X2 auxiliary relay contact closes when the heating
operation signal is enabled, regardless of whether the thermostat signal is enabled or disabled.
Connect the wiring and use the materials as indicated in Available ports, see on page 194.
N O T E
The X2 auxiliary relay contact closes when the cooling operation signal is enabled, regardless of whether the
thermostat signal is enabled or disabled.
Thermostat enabled signal during the heating process
On-screen display: 06.
This optional signal is used to pick up the thermostat enabled signal for the compressor operating during the heating process
and to control a circulation pump or humidifier.
Connect the wiring and use the materials as indicated in Available ports, see on page 194.
N O T E
The X2 auxiliary relay contact closes when the thermostat signal is enabled during heating mode.
6 Optional functions
193
SMGB0063 rev. 1 - 10/2010
6
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