14
ST 5220
QM 1336.rev.01
H
EATING OPTIONS
Stages 3 and 4 can operate as heating or cooling stages.
ð
Set switches # 3 and # 4 to OFF to
use both stages for cooling.
ð
Set switch # 3 to ON and switch # 4
to OFF to use Stage 4 for heating
and Stage 3 for cooling.
ð
Set switches # 3 and # 4 to ON to
use both stages for heating.
Note that if only one stage is used for heating, it must be Stage 4.
3
4
ON
