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Change Setpoint
To change the setpoint:
1. Push the Setpoint button (or either Up/Down
button) to display the current value.
NOTE: Sequences 2 and 3 have two setpoints
indicated by "snowflake/cool" and "fire/
heat" icons. When the Cooling setpoint is
showing, pushing the Setpoint button will
display the Heating setpoint.
2. Use the Up/Down buttons to change the value.
3. Press the Setpoint button again, and the thermo-
stat will control at the new setpoint. (Alternately,
after about 30 seconds of no activity, the display
reverts back to displaying room temperature.)
NOTE: Setpoint range is 55 to 85° F (13 to 30° C),
with a default of 74° (for cooling or 70° for
heating).
Max.
(Colder
Limit
Output
Heating
Span
Setpoint
(Heating)
Setback
Min.
Limit
Proportional
Band
Change Configuration
Press and hold both the Up and Down arrows but-
tons for about ten seconds until the display starts
flashing "LIMITS."
NOTE: When a menu is flashing (LIMITS,
ADVANCE, SYSTEM, or EXIT),
pressing Up or Down displays the next
menu item and pressing Setpoint selects
that menu. When a menu is NOT flashing
(e.g., DEAD BD), pressing Up or Down
changes the value and pressing Setpoint
displays the next menu item.
To change any of the limits (output span) when
"LIMITS" is flashing, press the Setpoint button
until the desired limit (AO1 MIN, AO1 MAX, AO1
AUX, AO2 MIN, or AO2 MAX) is displayed.
(Limits are adjustable from 0 to 12 VDC, with MIN = 0,
General Information (All Applications)
Room Temperature
Warmer)
Cooling
Setpoint
(Cooling)
Setback
Deadband
Proportional
Band
MAX = 12, and AUX = 0 as defaults.) Use the Up and
Down buttons to change the desired values. (If no
Auxiliary Flow is desired, set AO1 AUX to 0.)
To change any of the system or advanced features,
press the Up or Down button until the desired (flash-
ing) ADVANCE or SYSTEM menu appears and
then press the Setpoint button.
The ADVANCE menu enables changing (via the
Up/Down buttons) the values of:
• DEAD BD—Deadband or "minimum setpoint
differential" (adjustable from 1 to 10° F, 2° F de-
fault)
• SETBACK—Standby/unoccupied setback off-
set (adjustable from 0 to 10° F, 2° F default)—does
not apply to morning warm-up
• PROP BD—Loop proportional band or "throt-
tling range" (adjustable from 1 to 10° F, 2° F default)
• Rm OFST—Room temperature offset (adjust-
able ±5° F, 0 default)
• CNG OVR—changeover temperature (adjustable
from 55 to 85° F, 77° F default)
• I TIME—Loop integral time (adjustable from 0 to
60, 30 minutes default, 0 = cancel integral action)*
The SYSTEM menu enables changing:
• Sequence (SEQ1, SEQ2, or SEQ3)—see
Sequences on page 7
• °F (ENGLISH) or °C (METRIC)
• BLANK—Display blanking (NO or YES)—
when blanked, the temperature will display for
no more than 30 seconds after a button is pushed
When done, navigate to (flashing) Exit to save
changes. Letting the menu time-out (about 30
seconds) will not permanently save changes.
*NOTE: As long as there is an error between room
temperature and setpoint, the integral
action will cause the output to integrate up
or down. I TIME is the time it takes the
integral action to repeat the effect of the
proportional action.
6
CTE-5202 Applications Guide, AN0912A Rev. D
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