T7350 Programmable Thermostat FOR CONVENTIONAL/HEAT PUMP SYSTEMS Contents Features ........................................................................... Settings ............................................................................ Programming ................................................................... ® U.S. Registered Trademark Copyright © 2003 Honeywell International Inc.
FEATURES • Intelligent Fan™ feature energizes fan continuously in the Occupied periods. Fan can also be configured for conventional heat or electric heat fan operation. • Remote sensor capability for temperature (including outdoor air and discharge air) and humidity sensors. • P+I+D control minimizes temperature fluctuations. • Recovery ramping control automatically optimizes equipment start times based on building load.
SETTINGS • Auxiliary subbase contact typically interface with a Honeywell Economizer System (for total rooftop control integration) or act as dehumidification output. Using Thermostat Keys The thermostat keys are used to: • set current time and day, • program times and setpoints for heating and cooling, • override the program temperatures, • display present setting, • set system and fan operation, • perform simple configuration.
Control Table 1. Default Setpoints. System Settings Occupied — Auto: Thermostat automatically changes between heating and cooling based on sensed indoor temperature. — Cool: Thermostat controls cooling. — Off: Heating, cooling, and fan are all off. — Heat: Thermostat controls heating. — Em Heat: Auxiliary heat serves as first stage. Compressor stages are locked off.
PROGRAMMING IMPORTANT Programming the thermostat with the keypad requires 24 Vac (turn on system power). The keyboard lockout feature must be disabled. The thermostat operates at the Occupied temperature setting unless the thermostat is programmed. The program has four settings: — Occupied heat. — Occupied cool. — Not Occupied heat. — Not Occupied cool. NOTE: Before starting programming, use Table 2 to organize the program schedule.
Table 2. Occupied and Not Occupied Period Start Times. Day Occupied Period 1 Not Occupied Period 1 Occupied Period 2 Not Occupied Period 2 Monday Tuesday Wednesday Thursday Friday Saturday Sunday NOTE: 12:00 PM is Noon, and 12:00 AM is Midnight.
Set Day/Time Temperature Occupied HEAT Not Occupied COOL HEAT COOL Day Time System Fan Run Copy HEAT COOL ON AUTO Schedule Schedule Day Clear Occupied Not Occupied Start Time Override Temporary Temporary Occupied Not Occupied M19610BB Fig. 1. Thermostat key locations. 2. 3. When using the keypad to change the day/time: 1. Press Set Day until the current day is displayed. NOTE: Sun = Sunday, Mon = Monday, Tue = Tuesday, Wed = Wednesday, Thu = Thursday, Fri = Friday, Sat = Saturday.
Setting Schedule Times NOTE: The thermostat must be in program mode to use the copy feature. If the thermostat is already in program mode, skip step 1. Use the keys in the “Schedule” area of the keypad for this procedure. 1. Press Occupied. 1. 2. 3. 4. 5. NOTE: Anytime a start time is not required, press Clear Start Time. 2. 3. 4. 5. 6. Press Day until desired day is displayed. Press Occupied or Not Occupied until the proper period is displayed.
Clearing Program Start Times 1. 2. 3. 4. 5. NOTES: The ranges mentioned can be limited based upon setpoints and stops: 1. The greater of the Minimum Heat Stop and the Not Occupied Heat setpoints determines the lowest setting to which the occupied heat setpoint can be adjusted: Stop/NotOcc ≤ OccHeat ≤ (OccCool - 2). 2. The lesser of Maximum Cool Stop and Not Occupied Cool setpoints determines the highest setting to which the occupied cool setpoint can be adjusted: Stop/NotOcc ≥ OccCool ≥ (OccHeat + 2). 3.
Temperature Setpoint Overrides Programming Temperature Setpoints 1. 2. 3. 4. 5. 6. 7. 8. 9. Press Occupied Heat. Press up ▲ or down ▼ until the desired temperature is displayed. Press Occupied Cool. Press up ▲ or down ▼ until the desired temperature is displayed. Press Not Occupied Heat. Press up ▲ or down ▼ until the desired temperature is displayed. Press Not Occupied Cool. Press up ▲ or down ▼ until the desired temperature is displayed. Press Run Schedule.
— Using Temporary Not Occupied Override With a disconnected or failed T7770, or a T7350 set for local temperature sensing, offset is zero. The Temporary Not Occupied Override fixes the device to operate in Not Occupied mode for a number of days (between 1 and 99) without changing the programming saved in memory. Using Temporary Occupied Override The Temporary Occupied Override can be used when the T7350 is in Not Occupied or Standby mode. It switches to the Occupied mode for a fixed number of hours. 1.
NOTE: The default temperature setting is the Not Occupied setpoint. 3. Press to display the default setpoint. Changing Temperature Setpoint Until Next Program Period NOTE: The only way to change this setpoint is to change the Not Occupied setpoint. 1. 2. Press up ▲ or down ▼ until the desired temperature is displayed. The temporary temperature appears for approximately ten seconds, then the room temperature is displayed.
