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X-XX UL

INSTALLATION INSTRUCTIONS

®U.S. Registered Trademark
Copyright © 1998 Honeywell Inc.  •            •   All Rights Reserved

T7300D Series 2000

Commercial Microelectronic

Thermostat

APPLICATION

The T7300D Series 2000 Commercial Microelectronic
Thermostat provides electronic control of 24 Vac
commercial single zone heating, ventilating and air
conditioning (HVAC) equipment. It is designed for use
with Q7300A,G,L subbases for conventional heat/cool
applications. The T7300D is field configurable for
automatic or manual changeover between heating and
cooling. The system and fan selections are done by a
keyboard entry. All T7300D Thermostats require a
common wire to supply power.

RECYCLING NOTICE

If this control is replacing a control that contains
mercury in a sealed tube, do 

not place your old

control in the trash.

Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of the old thermostat.

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow

the instructions can damage the product or cause a
hazardous condition.

2. Check the ratings given in the instructions and on

the product to make sure the product is suitable for
your application.

3. Installer must be a trained, experienced service

technician.

4. After completing installation, use these instructions

to check out the product operation.

Mounting Thermostat on Subbase

The thermostat mounts on the subbase after it is installed.

1. Engage tabs at the top of thermostat and subbase.

See Fig. 1.

2. Press lower edge of case to latch.

NOTE:

To remove the thermostat from the wall, first pull
out at the bottom of the thermostat; then remove
the top.

Fig. 1. Mounting thermostat on subbase.

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,

configure Installer Setup,

check Installer System Test.

See Fig. 2 for key information.

M4824A

B.

  

PRESS LOWER EDGE OF CASE TO LATCH.

A.

  

ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE.

62-0123-3

Summary of Contents for SERIES 2000 T7300D

Page 1: ...duct 1 Read these instructions carefully Failure to follow the instructions can damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After completing installation use these instructions to check out the product operat...

Page 2: ...l the configuration options available A combination of key presses are required to use the Installer Setup feature To enter the Installer Setup press and hold the Heat Cool Settings key with both the increase and decrease keys until the first number is displayed All display segments appear for approximately three seconds before the number is displayed See Fig 3 and 4 Fig 2 Thermostat key locations...

Page 3: ...ot have a system key Installer Setup Number 12 will not be displayed Review Table 2 factory settings and mark any desired changes in the Actual Setting column When Installer Setup is complete review the settings to confirm that they match the system Fig 4 Display of Installer Setup number and setting M10238B INSTALLER SETUP NUMBER DISPLAY COLUMN 2 OF TABLE 2 FACTORY SETTING OR OTHER CHOICE DISPLAY...

Page 4: ...upied mode Fan operates with calls for heating or cooling in Unoccupied mode Auxiliary Contact Operation 18 0 0 Time of day contacts 1 1 Economizer contacts Extended fan operation in heating 19 0 No extended fan operation after the call for heat ends 1 Fan operation is extended 90 seconds after the call for heat ends Fan key adjustment models with Fan key only 21 0 Fan setting key is operational 1...

Page 5: ...s Run Program to exit the Installer Setup Be sure to set the current day and time immediately Setting Current Day and Time 1 Press Set Current Day Time NOTE On initial power up or after an extended power loss 1 00 pm flashes on the LCD until a key is pressed 2 Press Day until the current day is displayed NOTE Sun Sunday Mon Monday Tue Tuesday Wed Wednesday Thu Thursday Fri Friday Sat Saturday M495...

Page 6: ...art Time Unoccupied Temp Heat Cool Settings Auto System Fan Mon Room AM Occupied 1 Heat Run Program To start the system test CAUTION The minimum off time for compressors is bypassed during the Installer System Test Equipment damage can occur if the compressor is cycled too quickly Press and hold the increase and decrease keys at the same time until 10 appears All segments of the LCD are displayed ...

Page 7: ... 32 Stage three cool turns off 31 Stage two cool turns off 30 Stage one cool and system fan turn off Fan Equipment System Test Heat Cool Settings 40 Change from cooling to fan equipment system test 41 Fan comes on 40 Fan turns off Key Operation System Test Heat Cool Settings 60 2 Change from fan to key operation system test Unoccupied Temp 60 0 Unoccupied Temp test number is displayed Occupied Tem...

Page 8: ...nal is connected to the system transformer Check for 24 Vac between X and R or RH terminals If missing 24 Vac check if the circuit breaker is tripped reset the circuit breaker check if the system fuse is blown replace the fuse check if the power switch on the HVAC equipment is in the Off position set to the On position check wiring between thermostat and HVAC equipment replace any broken wires and...

Page 9: ...nstaller Setup number 38 Reconfigure minimum off time if required System selection is not set to Heat Set system selection to Heat Cooling will not come on No power to the thermostat Check that X terminal is connected to the system transformer Check for 24 Vac between X and R or RC and Y terminals If missing 24 Vac check if the circuit breaker is tripped reset the circuit breaker check if the syst...

Page 10: ...62 0123 3 10 T7300D SERIES 2000 COMMERCIAL MICROELECTRONIC THERMOSTAT ...

Page 11: ...62 0123 3 11 T7300D SERIES 2000 COMMERCIAL MICROELECTRONIC THERMOSTAT ...

Page 12: ...T Home and Building Control Honeywell Limited Honeywell Limitée 35 Dynamic Drive Scarborough Ontario M1V 4Z9 62 0123 3 L C Rev 12 98 Printed in Taiwan R O C Home and Building Control Honeywell 1985 Douglas Drive North Minneapolis MN 55422 4386 www honeywell com yourhome ...

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