White Rodgers 90 SERIES - Manual (Page 4)

4
RESET SWITCH
See the Troubleshooting section at the end
of this document for more information about
the function of this switch.
E2/P SWITCH
The E2/P switch is located on the back of the
thermostat body (see fig. 2). This switch
controls how the E2/P terminal of the
thermostat will be energized. When the
switch is in the E2 position (down), the E2/P
terminal will be energized only when in
emergency heat. When the switch is in the P
position (up), the E2/P terminal will always
be energized except when in emergency heat.
Consult the equipment manufacturer or a
qualified heating/cooling service person
before setting this switch. If your system has
no connection to E2/P, no change in the
switch setting is required.
Figure 2. Switch locations on back of thermostat body
CONFIGURATION
1
2
P
E2
S18
S19
INSTALLER CONFIGURATION
BEFORE TURNING POWER ON, please
read the following instructions. Before
operating the system, you must configure
the thermostat to operate properly with
your equipment.
The thermostat, as it comes from the factory,
is configured to operate a standard multi-
stage electric forced hot air system with a
single stage air conditioning compressor
and fan. In this configuration, the thermostat
will turn on the fan immediately on a call for
heat. If you are unsure whether your system
requires the thermostat to control the fan,
contact your furnace/air conditioning system
manufacturer or a qualified heating/air
conditioning service person.
Your new thermostat has an Installer menu,
which allows you to customize the thermostat
to meet your requirements. (The thermostat
also has a User menu and a Keypad
Lockout menu; these menus are explained
further in the Operating Instructions.)
The menu settings can be changed at any time
to meet system or personal requirements.
ENTERING THE CONFIGURATION
MENUS
After properly wiring the thermostat, turn on
power to the system. Momentarily press
PROGRAM RUN to make certain the
thermostat is in the run program mode, then
press TIME FWD and TIME BACK at the
same time to enter the User Configuration
menu. When the display changes to the first
item in the configuration menu, release the
buttons. Then press and hold SET TIME and
SET DAY for approximately 3 seconds to
enter the Installer menu. The display will
change to show the first item on the Installer
menu (multi-stage/heat pump selection). Use
the following text, along with the Installer
table on page 5, to guide you through the
menu.
Once in the menu, you set each item to the
proper selection using
or , then
press TIME FWD to change the display to
the next item or TIME BACK to return to the
previous item .
To exit the menu at any time, press PRO-
GRAM RUN .
MULTI-STAGE/HEAT PUMP MODE.
(Installer table step 1.) Use this item to select
the system type (multi-stage or heat pump).
IF YOU HAVE A HEAT PUMP SYSTEM,
you must select HEAT PUMP here. This
sets up proper default values for most heat
pump systems. This selection also makes
available some additional menu items that
apply only to heat pump systems.
HEAT PUMP COMPRESSOR
CONFIGURATION.
(Installer table step 2; this menu item is
displayed only when heat pump was selected
in step 1.) Use this item to select the number
of heat pump compressors and how they are
connected.
ELECTRIC HEAT FAN
CONFIGURATION.
(Installer table step 3.) This menu item
determines whether fan control will be
through the thermostat or through the heating
system. If you have an electric heat or other
system that REQUIRES the thermostat to
control the fan, set this item ON. This allows
the thermostat to energize the fan immedi-
ately on a call for heat. If you are unsure if
the system requires the thermostat to control
the fan, contact the equipment manufacturer
or a qualified heating and air conditioning
service person. If your system controls fan
operation (as with most fossil fuel systems),
set this item to OFF. Note that with heat
pump systems, the fan always cycles with the
compressor.
SET CYCLE HEAT, COOL, AUX
(ANTICIPATION).
(Installer table steps 4 through 6; step 6 is for
heat pump only). These items allow the cycle
times in heating, cooling and auxiliary (heat
pump only) to be increased or decreased. The
factory set values can be adjusted higher for
longer cycles or lower for shorter cycles.
NOTE: Some manufacturers still instruct you
to set the anticipator to the current draw of
the equipment. That instruction applies only
to mercury bulb or mechanical thermostats; it
does not apply to this digital thermostat. As
configured at the factory, this thermostat will
maintain an accurate temperature. No
further adjustment is necessary, although
you can use these menu items to customize
the performance of the thermostat to your
requirements.
The adjustment range for HEATING is from
1 to 40 (9 to 40 for heat pump). The factory
preset is 5 (13 for heat pump). The adjust-
(Continued on page 6)
1 Reset switch
E2/P switch 2
SWITCHES