Bryant Preferredt Series Installation Instructions Manual page 36

On — The Y1 and Y/Y2 outputs are simultaneously energized to satisfy all heating
demands.
Default is OF (off).
Option 24 — Programmable/Non- Programmable
This selection allows the installer to configure the thermostat as either
programmable or non- programmable. Selections are P, nP.
Default is P (programmable models only).
Option 25 — Number of Programmable Periods
This selection allows the installer to configure the thermostat for two or four
periods per day. Two periods is a common commercial application and four periods
is more common for residential. This selection is not available if Option 24 has
been set to nP to configure the thermostat for non- programmable operation.
2 — Periods DAY and SLEEP are available
4 — Periods WAKE, DAY, EVE, and SLEEP are available.
Default is 4.
Option 26 — Minimum Cooling Setpoint
This selection allows the installer to configure the minimum cooling setpoint that
the user is allowed to set. The range is based on the value of the adjustable
deadband Option 11, such that the minimum of the range is 50_F/10_C plus the
adjustable deadband and the maximum is 90_F/32_C.
Default is 52_F/11_C (based on the adjustable deadband default = 2).
Option 27 — Maximum Heating Setpoint
This selection allows the installer to configure the maximum heating setpoint. The
range is based on the adjustable deadband value Option 11, such that the minimum
of the range is 50_F/10_C and the maximum is 90_F/32_C minus the deadband.
Default is 88_F/31_C (based on the adjustable deadband default = 2).
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