Lennox X4146 Installation Instructions Manual page 11

Installer Installer
Set−Up Set−Up
Number Name
Cycles
per Hour
(cph) 1st
0220
Stage
Compres-
sor
Cycles
per Hour
(cph) 1st (cph) 1st
0240 Stage
Conven-
tional
Heating H ti
Continu- Continu
ous
0280
Backlight
Change Change-
0300 0300
over
Deadband 2 − 2°F (1.5°C)
Deadband
(Minimum (Minimum
differential 4 − 4°F (2.5°C)
differential
between between
0310 0310
heating heating
and
cooling li
setpoints) setpoints)
Tempera-
0320 0320
ture Dis ture Dis-
play Scale 1 − Celsius
Selection Description
(Factory setting in bold print)
3 − Recommended setting for
compressors. Factory setting.
Settings of 1 − 6 cph available.
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
furnaces.
Settings of 1 − 12 cph available.
0 − Backlight not lit continuously. Back-
light comes on when key is pressed.
Factory setting.
1 − Backlight is continuously lit.
(Thermostat must be powered by 24V
common wire for this feature to be
allowed.)
0 − Manual changeover from heating
mode to cooling mode. Factory setting.
1 − Auto−changeover from heating mode to
cooling mode.
3 − 3°F (2°C). Factory setting.
5 − 5°F (3°C)
6 − 6°F (3.5°C)
7 − 7°F (4°C)
8 − 8°F (4.5°C)
9 − 9°F (5°C)
0 − Fahrenheit (factory setting).
Page 11
Notes
Shown
only when y
conven-
tional sys-
tem is
selected. selected
Option
always
shown;
however, however,
t'stat must
be pow-
ered by
24V com-
mon.
Option Option
shown shown
only when only when
auto auto−
change- g
h
over has
been been
selected. selected