Honeywell WebStat T7350 Betriebsanleitung

63-2604

® U.S. Registered Trademark

T7350

Programmable Thermostat

FOR CONVENTIONAL/HEAT PUMP SYSTEMS

Contents

Features ........................................................................... 2

Settings ............................................................................ 3

Programming ................................................................... 5

2 63-2604

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 available with

all models.

• Individual heat and cool setpoints

available for Occupied and Not Occupied

periods.

• Convenient overrides allow temporary

setpoint changes.

• 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.

• Thermostat Interface Module (TIM)

connections to thermostat from PDA for

advanced configuration, programming,

etc.

• Universal Versaguard™ Thermostat

guards available.

3 63-2604

• Auxiliary subbase contact typically

interface 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 Programming section for

complete instructions on changing these.

4 63-2604

Table 1. Default Setpoints.

Setting System and Fan

System 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 System and Fan keys to change

settings.

System Settings

— 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.

Fan Settings

— On: Fan operates continuously in occupied

and standby periods. Fan cycles with call for

heat or cool during not occupied periods.

— Auto: Fan cycles with call for heating or

cooling during occupied, standby, and

not occupied periods.

NOTE: This is further modified by selection of

conventional or electric heat.

Control Occupied Not Occupied Standby

Heating 70°F (21°C) 55°F (13°C) 67°F (19°C)

Cooling 75°F (24°C) 85°F (29°C) 78°F (26°C)

5 63-2604

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 of time.

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 upon the calendar (MM/DD/

YYYY), the device will not allow the

keypad to change the day.

6 63-2604

Table 2. Occupied and Not Occupied Period Start Times.

NOTE: 12:00 PM is Noon, and 12:00 AM is Midnight.

Day Occupied Period 1 Not Occupied Period 1 Occupied Period 2 Not Occupied Period 2

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

7 63-2604

Fig. 1. Thermostat key locations.

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 up ▲ or down ▼until the current

time is displayed.

NOTE: Tapping Set Time changes the

time in one hour increments.

4. Press Run Schedule.

System Fan Run

Schedule

CopyNot OccupiedOccupiedDay

Clear

Start Time

Day Time

Temperature

Temporary

Occupied

Override

HEAT HEATCOOL COOL

HEAT COOL ON AUTO

Schedule

Set Day/Time

Occupied

Not Occupied

Temporar y

Not Occupied

M19610BB

8 63-2604

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 desired day is displayed.

3. Press Occupied or Not Occupied until the

proper period is displayed.

4. Press up ▲ or down ▼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.

9 63-2604

Clearing Program Start Times

1. Press Occupied or Not Occupied until the

start period to be cleared is displayed.

2. Press Day until 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 upon 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 Occupied Cool

Setpoint – 2.

4. The Minimum Occupied Cool Set-

point is limited by the Occupied Heat

Setpoint + 2.

10 63-2604

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.

— Default duration is three hours.

NOTE: To cancel 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 setpoints, and cool

setpoints are adjusted.

— The maximum adjustment is ±5°F.

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