Operation - Honeywell SuitePRO TB8575 Installation Instructions Manual

Installer Test (IT) Mode
To enter Installer Test Mode:
• Press and hold both the Up arrow button and the
Down Arrow button for three (3) seconds.
This displays all segments of the LCD screen on the LCD.
See Fig. 22 on page 10.
Table 5 provides the Test codes (IT codes) and values. To
enter the IT codes:
1. Press the System (Heat/Cool) button to cycle
through the IT codes, which display in the upper
right above the word Test.
2. Press the Up or Down Arrow buttons to cycle
through the values for the currently displayed IT
code. The values display in the center of the screen.
3. After the desired value displays, press the System
button to store your value selection and display the
next IT code.
NOTE: Exiting Installer Test Mode is the same as the
method for entering test mode,
Fig. 25. Installer Test (IT) mode screen.

OPERATION

PROPORTIONAL + INTEGRAL
(P+I) CONTROL
Like a mechanical thermostat, the fan coil thermostats
have On/Off control output. However, this output is
regulated by a P+I algorithm, enabling the thermostat to
control closer to setpoint than conventional thermostats.
This results in performance where the space temperature
is maintained within 0.75°C (1.5°F) of the setpoint
regardless of fan speed.
NOTE: Integral action corrects the temperature con-
trol errors of proportional-only control, but it
is slower to react to large temperature or set-
point changes.
Economy Setback Modes
ACTIVITY SENSING (IS CODE #22)
If Activity Sensing is enabled, any time the thermostat is
not touched (no single key is pressed) for the duration
selected, the thermostat automatically falls back into the
Economy Setback. The LCD displays ECONOMY
SETBACK just to the right of the main temperature display
to indicate Activity Sensing mode is active. When any key
is pressed, the thermostat controls to Occupied mode.
TB6575/TB8575 SUITEPRO™ DIGITAL FAN COIL THERMOSTATS
IT
Code
10
20
30
40
50
71
Test
72
73
74
M27587
75
76
BUTTON PRESS SETBACK (IS CODE #19-5)
The default remote setback option is for economy setback
via a button press on the thermostat. In this mode, the
thermostat can quickly be setback by pressing and
holding down the System Mode button for more than 3
seconds. The LCD displays ECONOMY SETBACK just to
the right of the main temperature display to indicate the
Setback is active. When any key is pressed, the
thermostat controls to Occupied mode.
REMOTE SETBACK (IS CODE #19)
Remote Setback is activated by a dry contact closure on
the remote setback input from an occupancy sensor, time
switch, or hotel card key. The thermostat controls to the
user/installer defined setback setpoints for increased
energy savings. The LCD displays Economy Setback just
to the right of the main temperature display to indicate the
Remote Setback mode is active.
When Remote Setback is active, all buttons on the
thermostat are disabled. However, the button
combinations to access Installer Setup (IS) and Installer
Test (IT) remain enabled.
ECONOMY SETBACK OPERATION
For Heat Mode, when Economy Setback is enabled, the
set point changes to the remote setback heating setpoint
(IS CODE #20).
15
Table 5. Installer Test (IT) Codes and Options.
Code Option
Description Value
Heat Control
Auxiliary Heat
Control
Cool Control
Fan Control
Pipe Sensor 32-199 Displays the pipe
Software Main 01-99 A 2-digit number, 01-99
version
Software Vice 01-99 A 2-digit number, 01-99
version
Configuration 01-99 A 2-digit number, 01-99
Data Main version
Configuration 01-99 A 2-digit number, 01-99
Data Vice version
Week Produced 01-52 A 2-digit number, 01-52
Year Produced 08-99 A 2-digit number, 08-99
Option Description
0 Close
1 Open
0 Close
1 Open
0 Close
1 Open
0 Close
1 Low Speed
2 Medium Speed
3 High Speed
sensor temperature.
Only used for System
Type 3 or 6 (IS 2, value
3 or 6). Only the
Analog pipe sensor is
tested.
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