Bryant Preferredt Series Installation Instructions Manual page 33

Option 19 — Dry Contact Configuration (programmable models only)
There are 2 available selections, OF and 1.
OF — The dry contact is always de- energized.
1 — The dry contact will be energized for the specified number of minutes per
hour. This selection is programmable by period. When this selection is changed
from OF to 1, the period icons are shown and the minute segments of the clock
display are shown. The triangle icon next to the WAKE period will be on and a
value between 0 and 60 will be shown in the minutes display. See Operational
Information and Wiring Diagrams for further explanation of dry contact
configuration and use. To change the period or minutes, press the soft key below
the period or minutes and then use the UP/DOWN buttons to change to the desired
value.
Default is OF (off).
Option 20 — Outdoor Air Temperature Offset Adjustment
This selection allows the calibration, or deliberate miscalibration of the outdoor air
temperature sensor reading. The selection ranges from - 5 to +5_.
Default is 0.
Option 21 — Keypad Lockout (programmable models only)
This selection allows the installer to limit access to the keypad. Selections are OF
(off), 1, 2, 3.
OF (off) — The user has full access to the keypad.
1 — The user has access to modify setpoints, time of day.
2 — The user has access to change the setpoints only.
3 — The entire keypad is locked. When a button is pressed, the backlight will turn
on but none of the operating parameters will be changed.
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