Honeywell T775abm Manual

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
1162-0254—13
CHECKOUT
Inspect all wiring connections at the controller terminals, 
and verify compliance with the installation wiring 
diagrams.
WARNINGElectrical Shock Hazard.
Can cause severe injury, death or property 
damage.
Disconnect power supply before beginning wiring 
or making wiring connections, to prevent electrical 
shock or equipment damage.
If any wiring changes are required, first be sure to remove 
power from the controller before...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
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INTERFACE OVERVIEW
The T775A/B/M controllers use an LCD panel and 
6-button keypad to provide status information and permit 
user input of the programming, setup, and scheduling 
parameters.
The following figure describes the display areas of the 
LCD and the keypad
.
Fig. 24. LCD Display - Home Screen And Keypad.
Menu Area – On the home screen, the LCD displays the 
configured relays and whether they are active. In 
Program, Setup or...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
1362-0254—13
IMPORTANT
After four minutes of inactivity (no buttons 
pressed), the LCD display reverts to the home 
screen display.
Accessing the Menus
Menus are used for programming, scheduling, viewing the 
summary settings, and setup of advanced options.
Programming, Scheduling, and 
Summary Menus
To access these menus from the home screen, press the 
MENU button (See Fig. 26)
.
Fig. 26. Menus.
Depending on whether scheduling is enabled or not,...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
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1. PROGRAMMING
The controller must be programmed before being placed 
into service.
IMPORTANT
During programming, the controller is live at all 
times. For example, the contacts may open and 
close when adjusting the setpoint.
The Programming process uses a hierarchical menu 
structure that is easy to use. You press the 
 and  
arrow buttons to move forward and backward through the 
menus. 
NOTES:
1. The controller interface is...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
1562-0254—13
Fig. 29. Program Menu Outputs.
1.2. Program Menu for Outputs
Press the MENU button, select PROGRAM, then select 
RELAY 1 (or MOD 1) to view the parameters. Fig. 29 
shows RELAY 1.
NOTE: For MOD 1 and 2, THROT RNG replaces 
DIFFRNTL.
NOTE: The Setback parameter displays only if 
scheduling is enabled (See Fig. 57 on 
page 24) or the DI Option is set to Setback. 
(See Fig. 60 on page 26).
Continue with “1.2.1. SETPOINT”.
Fig. 30. Program...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
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Fig. 32. Program - Sensor.
1.2.3. SENSOR
1.From the menu, use the  and  buttons to 
highlight SENSOR.
2.Press the 
 button to display the sensor selec-
tions.
3.Use the
  and  buttons to select Sensor A or 
B.
4.Press the 
 button to accept the highlighted sen-
sor and display the next option.
Fig. 33. Program - Heat/Cool.
1.2.4. HEAT/COOL
1.From the menu, use the  and  buttons to 
highlight HEAT/COOL.
Default: HEAT
2.Press the...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
1762-0254—13
Fig. 35. Program - Exit.
1.2.7. Exiting Program Mode
Press the HOME button to leave programming mode and 
return to the home screen.
This completes the programming procedure.
2.SETUP (ADVANCED OPTIONS)
Setup provides the ability to change the factory default 
settings for the temperature sensors and outputs, to 
enable/disable reset control, and to enable/disable 
scheduling.
NOTE: The controller interface is intuitive. You may 
find...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
62-0254—1318
Fig. 37. Setup - Sensors - Number of Sensors.
2.2.1. Number of SENSORS
The value entered here determines the number of 
sensors displayed on the home screen.
1.From the Sensors menu, highlight # SENSORS 
then press the 
 button to display the number of 
sensors.
2.Use the
  and  buttons to enter the number of 
sensors (1 or 2).
Default: 2
3.Press the 
 button to accept the value and display 
the SENSOR A selection.
Fig. 38. Setup -...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
1962-0254—13
Fig. 41. Setup - Sensors - Sensor A - Label.
2.2.2.3. LABEL (the sensor input)
For a sensor already labeled, the display positions to and 
highlights that label.
1.From the Sensor A selections, use the
  and  buttons to highlight LABEL.
2.Press the  button to display the label list.
3.Use the  and  buttons to scroll through list 
and highlight the desired label.
You may need to scroll up or down to view all 
possible labels.
4.Use...

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
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Fig. 44. Setup - Sensors - Sensor B - Limit.
2.2.4. LIMIT (Sensor B only)
For the T775M2030 and T775M2048 models only, the 
LIMIT item displays on the Sensor B menu.
NOTE: The LIMIT option acts only on Modulating 
Output 1.
1.From the Sensors menu, use the
  button to 
highlight SENSOR B.
2.Press the  
 button to display the Sensor B menu.
3.Use the  and  buttons to select the LIMIT 
item.
4.Use the 
 button to display the Limit...