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value between 0 and 60 will be shown in the minutes display. See Operational
Information and Wiring Diagrams for further ex planation 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_F.
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.
When the keypad lock selection is turned on, the padlock icon will be displayed.
To unlock the keypad, press and hold the UP/DOWN buttons simultaneously for
five seconds. When the keypad is unlocked, the padlock icon will turn off. The
keypad will remain unlocked for two minutes after the last button press. After
two minutes with no button presses, the keypad will lock again. The keypad will
not lock in the software configuration mode or in the installer test mode.
Default is OF (off).