Manual

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT
63-2666—01 12
NOTES: The display returns to default screen after pressing Run Schedule (or after a period of time without keypress):
— ten seconds: when returning from temporary setpoint changes, info screen, temp occ, and temp not occ.
— one minute: when returning from setting clock/day.
— ten minutes: when returning from System Checkout.
— five minutes: when returning from all other modes.
Special Functions
Restore Factory Configuration (Run/Clear)
IMPORTANT
This operation erases current configuration and
restores factory defaults for all configuration,
parameters, setpoints and schedules. To regain the
old requires device reconfiguration.
1. Press both Run Schedule and Clear Start Time.
2. The display gives the option to revert to FAC CFG.
a. To restore the factory defaults, press up  or
down  until the display indicates YES.
b. To cancel this option, ensure the display
indicates NO.
3. Press Run Schedule.
Get Factory Schedule (Info/Clear)
Performing this operation reverts the schedules to the factory
defaults:
1. Press both Info and Clear Start Time.
2. The display gives the option to revert to FAC SCH.
a. To restore the factory schedule, press up  or
down  until the display indicates YES.
b. To cancel this option, ensure display indicates NO.
3. Press Run Schedule.
Test Mode (Occupied/Not Occupied/Schedule Day)
CAUTION
Possible Equipment Damage.
Equipment damage can result if compressor is
cycled too quickly.
The minimum off time for compressors is bypassed
during Test Mode. Equipment damage can occur if the
compressor is cycled too quickly.
Use the Test Mode to check the thermostat configurations and
operation. To start the system test:
1. Press Schedule Day, Occupied and Not Occupied
simultaneously.
2. The display gives the option to TEST.
a. To enter test mode, press up  or down  until the
display indicates IN TEST.
b. To cancel this option, ensure display indicates NO
TEST.
3. Press Run Schedule.
NOTES:
— To verify whether or not the system test is still
active, repeat the above process.
— The system test times out after ten minutes with no
key pressed.
Save User Schedule (Info/Copy)
Performing this operation saves the current schedule
(including holidays) to memory, overwriting the old saved
schedule:
1. Press both Info and Copy.
2. The display gives the option to revert to SAV SHD.
a. To save the current schedule, press up  or
down  until the display indicates YES.
b. To cancel this option, ensure display indicates NO.
3. Press Run Schedule.
Get User Schedule (Info/Run)
Getting the user schedule restores the schedule (including
holidays) from saved memory, overwriting the schedule
currently in use:
1. Press both Run Schedule and Info.
2. The display gives the option to GET SHD.
a. To retrieve the saved schedule, press up  or
down  until the display indicates YES.
b. To cancel this option, ensure display indicates NO.
3. Press Run Schedule
OPERATION
Startup Operation
Upon initial thermostat powerup, a startup and initialization
program begins. This startup occurs only on initial powerup.
After total loss of power for an extended period, the current
time and day can be lost (requiring reset). However, the
thermostat retains the user program.
NOTE: With no program set, the thermostat controls to the
Occupied default setpoints of 70° F (21° C) for heat
and 75° F (24° C) for cool.
T7351 Relay Logic
All T7351 model thermostats contain at least four switching
relays. In conventional applications, the relays control first
stage cooling, first stage heating, fan, and auxiliary. In heat
pump applications, the relays control the heat pump
compressor, changeover, fan, and emergency heat.
O/B Terminal for Heat or Cool Changeover
The O/B terminal controls heat pump changeover. The default
operation is for the terminal to be powered when calling for
heat (or while the most recent call was for heat). This
corresponds to a typical B terminal.
NOTE: The O/B terminal can be configured to operate as a
typical O terminal (powered on call for cool).
Emergency Heat
With the system set for Em Heat, auxiliary heat serves as
stage one; compressor stages are locked off. The fan cycles
with the auxiliary heat.