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9. Push any excess wire into wall and against backplate.

Seal hole in wall to prevent air leaks. Leaks can affect

operation.

10. Attach thermostat to backplate by inserting tab on bottom

edge and hinging up until top snap secures.

11. Turn ON power to unit.

When power is applied, all display icons are lit for 2 sec-

onds to test the display. Following this, the equipment type for

which the thermostat is configured is displayed for an addition-

al 2 seconds. Equipment type will be either HP, AC, H, C or 35

(for WSHP) (for explanation see Option 01 below).
NOTE: If a common wire has not been connected, two AA

batteries must be used to power the thermostat.

CONFIGURATION

Configuration options enable the installer to configure the

thermostat for a particular installation. These configuration op-

tions are stored to the internal memory so they are retained

through a power outage. The availability of some configuration

options will be dependent upon other conditions in the thermo-

stat. For example, the backlight configuration is not available

unless full 24 vac power is connected. See Table 1.

Table 1 — Configuration Options Summary

* These settings are adjustable by the user. See Owner’s Manual for
additional information.

Entering and Exiting Configuration Mode —

Press and hold the

fan

button for about 10 seconds. After the

10-second period the Option number "01" will appear flashing

in the space temperature location. The value of the configura-

tion setting will be displayed in the set point location.

The parameter that is changeable will be determined by the

flashing area. The

down

button can be used to select a

new value. The

mode

button can be used to toggle/move the

selection between the configuration option number and the

configuration value. To exit the installer configuration screen,

press the

fan

button. If no button is pressed for three minutes,

the installer configuration screen will time out and the thermo-

stat will return to normal operation.

All changes to the installer configuration are saved as they

are made. There is no provision to exit the installer configura-

tion and cancel the change. The installer will have to manually

change a configuration back to its original value to "undo" a

change.

Configuration Options

OPTION 01 — EQUIPMENT TYPE — This option deter-

mines the control method of the thermostat. It should match the

type of equipment used.

Selection: HP, AC, H, C, 35
HP  — operates a two-stage heat pump
AC  — operates a two-stage AC with single unit
H  — operates a heat only system
C  — operates a cool only system
35  — operates a water source heat pump
Default: AC

OPTION 02 — REMOTE SENSOR SELECTION — A re-

mote thermistor can be connected to the S1 and S2 screw ter-

minals to sense either remote space, outdoor air, supply or re-

turn air temperature.
NOTE: Carrier sensors 33ZCT55SPT, 33ZCSENDAT,

33ZCSENSAT, and 33ZCSENOAT may be used for standard

space temperature sensor averaging. Sensors must be used as a

single sensor, 4 sensors or 9 sensors, with total sensor wiring

not to exceed 1,000 ft.

Selection: rS, SA, Od, rA
rS — Sense remote space temperature
SA*— Sense supply air temperature
Od*— Sense outdoor air temperature
rA* — Sense return air temperature
* Display only, not used for temperature control.
Default: Od

OPTION 03 — ENGLISH/METRIC — This configuration

selects between Fahrenheit (F) and Celsius (C) operation.

Selection: F, C
Default: F

OPTION 04 — FAN (G) ON WITH W OUTPUT — This

configuration is not available if the thermostat is configured as

Cool Only in Option 01. This selection determines whether fan

(G) output is to be on or off when the W is energized in AC,

HP, H or 35 (WSHP) configurations, and when the O/B output

is energized in the AC or H (heat only) configurations.

Selection: OF(F), ON
OF — Fan does not turn on with W output
ON — Fan turns on with W output
Default: ON

OPTION 05 — SPACE TEMPERATURE SENSING —

This selection determines which sensor the control will use for