20 to 50_F (−7 to 10_C) — Outdoor temperature below which both first and second stages of the compressor are energized to satisfy all heating demands. When a cycle starts under a high heat latch, it will finish the heating cycle on high stage.

On — The Y1 and Y/Y2 outputs are simultaneously energized to satisfy all heating demands.

Default is OF (off).

Option 24 — Programmable/Non−Programmable (programmable models only)

This selection allows the installer to configure the Thermidistat Control as either programmable or non−programmable. Selections are P, nP.

Default is P.

Option 25 — Number of Programmable Periods (programmable models only)

This selection allows the installer to configure the Thermidistat Control 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 Thermidistat Control 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

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Carrier TP-NRH-A, TP-PRH-A installation instructions Option 26 Minimum Cooling Setpoint