Honeywell T7350 Programmable Thermostat Owner’s Manual

Honeywell T7350 Programmable Thermostat

Product Information

Specifications:

• Compatible with conventional/heat pump systems
• Model: T7350
• Manufacturer: Unknown
• Product Dimensions: Unknown
• Weight: Unknown

Features:

• Programmable thermostat with setpoint changes
• Controls heating, cooling, and fan
• Compressor stages are locked off
• Auto temperature change based on sensed indoor temperature
• Continuous fan operation during occupied periods
• Fan cycles with a call for heat or cool during not occupied periods
• 28 independent time settings for occupied and not occupied periods
• Temporary occupied and not occupied keys for quick setpoint changes and energy-efficient operation
• Keyboard lockout feature

Settings:
The thermostat keys are used to control various settings:

• Setting Temperature: Refer to Table 1 in the programming section for default temperature setpoints and instructions on changing them.
• Setting System: Use the System key to change between Auto, Heat, Cool, and Em Heat modes.
• Setting Fan: Use the Fan key to change between Auto and On modes.

Programming:
The thermostat operates at the occupied temperature setting unless programmed. The program has four settings:

• Occupied heat
• Occupied cool
• Not occupied heat
• Not occupied cool

The thermostat can be set for two occupied and two not-occupied times for each day of the week, allowing for a total of 28 independent time settings. The Temporary Occupied key provides quick setpoint changes for increased comfort during not occupied periods, while the Temporary Not Occupied key provides energy-efficient operation for extended periods.

Before starting programming, refer to Table 2 to organize the program schedule.

Setting Current Day/Time:
The current day and time can be set using the keypad. Once set, it should not need to be set again. If a PDA sets the day based on the calendar, the keypad will not allow changing the day.

FAQ:

• How do I change the temperature setpoints?
  To change the temperature setpoints, refer to Table 1 in the programming section for complete instructions.

• How do I change the system mode and fan mode?
  To change the system mode, use the System key. To change the fan mode, use the Fan key.

• How many independent time settings can I program?
  You can program a total of 28 independent time settings for occupied and non-occupied periods.

• What are the Temporary Occupied and Temporary Not Occupied keys used for?
  The Temporary Occupied key allows for quick setpoint changes during non- occupied periods, while the Temporary Occupied key enables energy-efficient operation for extended periods.

• Can I use a PDA to set the day and time?
  Yes, you can use a PDA to set the day based on the calendar. However, the keypad will not allow changing the day if set by a PDA.

FEATURES

• Typically used in buildings (including restaurants, shopping malls, office buildings and banks) under 55,000 square feet.
• For single zone rooftop units, split systems, heat pumps or hot/chilled water systems.
• 7-day programming.
• Two Occupied and two Not Occupied periods per day.
• Keypad multi-level lockout is available with all models.
• Individual heat and cool setpoints are available for Occupied and Not Occupied periods.
• Convenient overrides allow temporary setpoint changes.
• Intelligent Fan feature energizes fans continuously in the Occupied periods. The 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.
• Thermostat Interface Module (TIM) connections to thermostat from PDA for advanced configuration, programming, etc.
• Universal Versaguard Thermostat guards are available.
• Auxiliary subbase contact typically interfaces with a Honeywell Economizer System (for total rooftop control integration) or act as dehumidification output.

Features Available via PDA Configuration

• 365-day clock with holiday programming.
• Automatic Daylight Saving Time adjustments.
• Selectable dehumidification limit control.
• Modulating output configuration.
• Occupancy input to control standby setpoint.
• Additional standby period used in low-traffic areas.
• Sequential start option.
• Discharge air high/low limits.
• Selectable recovery ramp.
• Ambient lockout (with outdoor sensor).

SETTINGS

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.

NOTE: See Fig. 1 for keypad information.

Setting Temperature

Refer to Table 1 for default temperature setpoints. See the Programming section for complete instructions on changing these.

Table 1. Default Setpoints.

Setting System and Fan

The system’s default setting is Auto. The fan default is set so the fan operates continuously during:

• Occupied periods,
• Heating and cooling equipment stages in Not Occupied and recovery periods.

NOTE:
Use the System and Fan keys to change settings.

System Settings

• Auto: The thermostat automatically changes between heating and cooling based on sensed indoor temperature.
• Cool: The thermostat controls cooling.
• Off: Heating, cooling, and fan are all off.
• Heat: The thermostat controls heating.
• Em Heat: Auxiliary heat serves as the first stage. Compressor stages are locked off.

Fan Settings

• On: Fan operates continuously in occupied and standby periods. Fan cycles with a call for heat or cool during non-occupied periods.
• Auto: Fan cycles with a call for heating or cooling during occupied, standby, and non-occupied periods.

NOTE: This is further modified by the selection of conventional or electric heat.

PROGRAMMING

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.

The thermostat can be set for two Occupied and two Not Occupied times for each day of the week (28 independent time settings). The Temporary Occupied key provides quick setpoint changes for increased comfort during Not Occupied periods. The Temporary Not Occupied key provides energy-efficient operation for extended periods.

IMPORTANT
Programming the thermostat with the keypad requires 24 Vac (turn on system power). The keyboard lockout feature must be disabled.

NOTE:
Before starting programming, use Table 2 to organize the program schedule.

Setting Current Day/Time

This can be done using the keypad.

IMPORTANT
Once you set the day/time once, you should not need to set it again. As a result, if you use a PDA to set the day based on the calendar (MM/DD/YYYY), the device will not allow the keypad to change the day.

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: noon is Noon, and midnight is Midnight.

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.

2. Press Set Time.

3. Press ups or down t until the current time is displayed.
   NOTE: Tapping Set Time changes the time in one-hour increments.

4. Press Run Schedule.

Setting Schedule Times

Use the keys in the “Schedule” area of the keypad for this procedure.

1. Press Occupied.
   NOTE: Anytime a start time is not required, press Clear Start Time.

2. Press Day until the desired day is displayed.

3. Press Occupied or Not Occupied until the proper period is displayed.

4. Press ups or down t until the desired start time is displayed.

5. Repeat steps 3 and 4 for a given day.

6. Repeat steps 2 through 5 until finished.

Copying a Day
Use the keys in the “Schedule” area of the keypad for this procedure.

NOTE:
The thermostat must be in program mode to use the copy feature. If the thermostat is already in program mode, skip step 1.

1. Press Occupied.

2. Press Day to select the day to be copied.

3. Press Copy.

4. Press Copy again.

5. Press Day until the day to receive the copy is displayed.

6. Press Copy.
   NOTE: DONE displays for two seconds then the program display reappears.

7. Repeat steps 2 through 6 for all the days desired.

8. Press Run Schedule.

Clearing Program Start Times

1. Press Occupied or Not Occupied until the start period to be cleared is displayed.
2. Press Day until the desired day is displayed.
3. Press Clear Start Time.
4. Repeat steps 1 through 3 for all the start times to be cleared.
5. Press Run Schedule.

Temperature Setpoints

Setpoint Limits
The setpoint temperature range is 40°F to 90°F (4°C to 32°C) for heating and 45°F to 99°F (7°C to 37°C) for cooling.

NOTES:
The ranges mentioned can be limited based on setpoints and stops:

1. The greater of the Minimum Heat Stop and the Not Occupied Heat set-points 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. The Maximum Occupied Heat Set-point is limited by the Occupied Cool Setpoint – 2.
4. The Minimum Occupied Cool Set-point is limited by the Occupied Heat Setpoint + 2.

Programming Temperature Setpoints

1. Press Occupied Heat.
2. Press up or down until the desired temperature is displayed.
3. Press Occupied Cool.
4. Press up or down until the desired temperature is displayed.
5. Press Not Occupied Heat.
6. Press up or down until the desired temperature is displayed.
7. Press Not Occupied Cool.
8. Press up or down until the desired temperature is displayed.
9. Press Run Schedule.

Temperature Setpoint Overrides

IMPORTANT

• Setup determines Occupied override duration.
• The default duration is three hours.

NOTE:
To cancel the Override and immediately return to the program, press Run Schedule.

T7770 Setpoint Knob
A T7770 setpoint knob can remotely adjust the T7350 setpoint. This adjustment can be made when the sensor is in override.

NOTES:

• During override, only occupied and standby heat and cool setpoints are adjusted.
• The maximum adjustment is ±5°F.
• With a disconnected or failed T7770 or a T7350 set for local temperature sensing, the offset is zero.

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. To use the default occupied override, press Temporary Occupied.
   NOTE: The default temperature setting is the Occupied setpoint.

2. To select a temperature setting other than the default, press up or down until the desired temperature offset displays (range is 0°F to 3°F).

Using Temporary, Not Occupied Override
The Temporary Not Occupied Override fixes the device to operate in Not Occupied mode for some days (between 1 and 99) without changing the programming saved in memory.

NOTES:

• If the number of days is set to zero, no temporary change takes effect.
• If the number of days is set just below zero, the display for days is “—” (an indefinite override).
• To turn off this override, you must press Run Schedule.

1. Press Temporary Not Occupied.

2. Press up or down to change the duration of the Not Occupied period (in days).
   NOTE: The default temperature setting is the Not Occupied setpoint.

3. Press (i) to display the default setpoint.

NOTE:
The only way to change this set-point is to change the Not Occupied setpoint.

Changing Temperature Setpoint Until Next Program Period

1. Press ups or down t until the desired tem-perature is displayed.
2. The temporary temperature appears for approximately ten seconds, then the room temperature is displayed.

By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and its subsidiaries, from and against any liability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you.

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