Daikin D2270C Owner's Manual & Installation Instructions page 13

Installation Instructions
Dual Stage Heat Pump with AUX Heat
Dip Switch Settings
*
*Reversing valve choice, O or B, is dependant on the type of valve installed
in the heat pump.
Thermostat
Aux heat will turn on
with second stage of
heatpump heating
8
HVAC
Equipment
C
Y2
W
O or B
Y1
G
R