Viconics VZ7656H Wireless Installation Guide User Manual
Page 27
27 | VZ7656R & VZ7656H-Installation Guide
Comp/aux
Compressor/auxiliary
interlock
Default value = Off
Sets the operation and interaction mode of the heat pump with
the auxiliary heat.
Interlock Off. In Heating mode.
If the heat pump is not able to satisfy the heating setpoint, the
auxiliary heat will be energized at the same time as the heat
pump stage. Typically applies when the air handler heat pump
coil is installed before the auxiliary heat. ( all electric systems )
Interlock On. In Heating mode.
If the heat pump is not able to satisfy the heating setpoint, the
auxiliary heat will be energized and the heat pump will be cut
off. Typically applies when the air handler heat pump coil is
installed after the auxiliary heat. ( add on systems ) There is a 2
minute delay to restart the heat pump, when the auxiliary heat
is shut down.