Page 14
Instal-
lerSet−
Up No.
Notes
Selection Description
(Factory setting in bold print)
Installer
Set−Up
Name
250
Cycles
per Hour
(cph) 2nd
Stage
Conven-
tional
Heating
(or Auxil-
iary Heat
for 2
Heat / 1
Cool
Heat
Pump
Applica-
tions)
1 − Recommended for use with steam and
gravity.
3 − Recommended for use with hot water
heat and high−efficiency (90% or higher)
furnaces.
5 − Recommended for use with stan-
dard−efficiency (less than 90%) fossil
fuel furnaces. Factory setting.
9 − Recommended for use with electric fur-
naces or electric auxiliary heat.
Settings of 1 − 12 cph available.
Shown only
when two−stage
heating is se-
lected.
0260
Cycles
per Hour
(cph) 3rd
Stage
Heating
1 − Recommended for use with steam and
gravity.
3 − Recommended for use with hot water
heat and high−efficiency (90% or higher)
furnaces.
5 − Recommended for use with standard−
efficiency (less than 90%) fossil fuel fur-
naces.
9 − Recommended for use with electric
furnaces or electric auxiliary heat. Fac-
tory setting.
Settings of 1 − 12 cph available.
Shown only in 3
heat / 2 cool
heat pump ap-
plications.
0270
Cycles
per Hour
(cph)
Emer−
gency
Heating
3 − Recommended for use with hot water
heat and high−efficiency (90% or higher)
furnaces.
5 − Recommended for use with standard−
efficiency (less than 90%) fossil fuel fur-
naces.
9 − Recommended for use with electric
strip heat in heat pump applications.
Factory setting.
Shown only in 2
heat/1 cool or 3
heat/2 cool heat
pump applica-
tions.
0280
Continu-
ous
Backlight
0 − Backlight not lit continuously. Back-
light comes on when key is pressed.
Factory setting.
1 − Backlight is continuously lit. (Thermo-
stat must be powered by 24V common
wire for this feature to be allowed.)
Option always
shown; howev-
er, t’stat must
be powered by
24V common.
table continued on next page
