Carrier 48/50PG C03-14 manual Appendix B - Control Modes With, Humidi−MiZer SYSTEM AND ECONOMIZER

APPENDIX B — CONTROL MODES WITH

Humidi−MiZer SYSTEM AND ECONOMIZER

Thermostat input shown for cooling demand (versus temperature sensor and set point). Humidistat input shown for dehumidification demand (versus relative humidity sensor and set point). Economizer cooling availability is dependent on outdoor temperature or enthalpy.

Circuit Subcooling mode = REHEAT 1

Circuit HGRH mode = hot gas reheat = REHEAT 2 Circuit ON mode = normal cooling

Thermostat Control type configuration = 0 = Adaptive, or Unit Control Type configuration = 3 = Space Temperature, for Dual-circuit and Tri-Circuit units results in added staging timers and flex between 1-stage Y1 and 2-stage Y1.

48/50PG and PM

SINGLE-CIRCUIT UNITS

(Thermostat Control Type configuration is ignored)

ECONO AVAILABLE?	Y1	Y2	HUMIDISTAT	CIRCUIT A	ECONOMIZER
NO	OFF	OFF	LOW	OFF	Min. Position	(Econo closed if fan off)
NO	OFF	OFF	HIGH	HGRH	Min. Position
NO	ON	OFF	HIGH	Subcooling	Min. Position
NO	OFF	ON	HIGH	Subcooling	Min. Position	alarm T411: Y2 without Y1
NO	ON	ON	HIGH	Subcooling	Min. Position	no alarm
NO	ON	OFF	LOW	ON	Min. Position
NO	OFF	ON	LOW	ON	Min. Position	alarm T411: Y2 without Y1
NO	ON	ON	LOW	ON	Min. Position	no alarm
YES	OFF	OFF	LOW	OFF	Min. Position	(Econo closed if fan off)
YES	OFF	OFF	HIGH	HGRH	Min. Position
YES	ON	OFF	HIGH	Subcooling	Min. Position
YES	OFF	ON	HIGH	Subcooling	Min. Position	alarm T411: Y2 without Y1
YES	ON	ON	HIGH	Subcooling	Min. Position	no alarm
YES	ON	OFF	LOW	OFF or ON	Cooling
YES	OFF	ON	LOW	OFF or ON	Cooling	alarm T411: Y2 without Y1
YES	ON	ON	LOW	OFF or ON	Cooling	no alarm

DUAL CIRCUIT UNITS

1-Stage Y1 (Thermostat Control Type configuration = 1)

and 2-Stage Y1 (Thermostat Control Type configuration = 2)

ECONO AVAILABLE?	Y1	Y2	HUMIDISTAT	CIRCUIT A	CIRCUIT B	ECONOMIZER
NO	OFF	OFF	LOW	OFF	OFF	Min. Position	(Econo closed if fan off)
NO	OFF	OFF	HIGH	HGRH	HGRH	Min. Position
NO	ON	OFF	HIGH	Subcooling	HGRH	Min. Position
NO	OFF	ON	HIGH	Subcooling	Subcooling	Min. Position	alarm T411: Y2 without Y1
NO	ON	ON	HIGH	Subcooling	Subcooling	Min. Position
NO	ON	OFF	LOW	ON	OFF	Min. Position
NO	OFF	ON	LOW	ON	ON	Min. Position	alarm T411: Y2 without Y1
NO	ON	ON	LOW	ON	ON	Min. Position
YES	OFF	OFF	LOW	OFF	OFF	Min. Position	(Econo closed if fan off)
YES	OFF	OFF	HIGH	HGRH	HGRH	Min. Position
YES	ON	OFF	HIGH	Subcooling	HGRH	Min. Position
YES	OFF	ON	HIGH	Subcooling	Subcooling	Min. Position	alarm T411: Y2 without Y1
YES	ON	ON	HIGH	Subcooling	Subcooling	Min. Position
YES	ON	OFF	LOW	OFF or ON	OFF	Cooling
YES	OFF	ON	LOW	OFF or ON	OFF or ON	Cooling	alarm T411: Y2 without Y1
YES	ON	ON	LOW	OFF or ON	OFF or ON	Cooling

DUAL-CIRCUIT UNITS

Digital (Thermostat Control Type configuration = 3)

ECONO AVAILABLE?	Y1	Y2	HUMIDISTAT	CIRCUIT A	CIRCUIT B	ECONOMIZER
NO	OFF	OFF	LOW	OFF	OFF	Min. Position	(Econo closed if fan off)
NO	OFF	OFF	HIGH	HGRH	OFF	Min. Position
NO	ON	OFF	HIGH	HGRH	HGRH	Min. Position
NO	OFF	ON	HIGH	Subcooling	HGRH	Min. Position
NO	ON	ON	HIGH	Subcooling	Subcooling	Min. Position
NO	ON	OFF	LOW	ON	OFF	Min. Position
NO	OFF	ON	LOW	ON	ON	Min. Position
NO	ON	ON	LOW	ON	ON	Min. Position
YES	OFF	OFF	LOW	OFF	OFF	Min. Position	(Econo closed if fan off)
YES	OFF	OFF	HIGH	HGRH	OFF	Min. Position
YES	ON	OFF	HIGH	HGRH	HGRH	Min. Position
YES	OFF	ON	HIGH	Subcooling	HGRH	Min. Position
YES	ON	ON	HIGH	Subcooling	Subcooling	Min. Position
YES	ON	OFF	LOW	OFF or ON	OFF	Cooling
YES	OFF	ON	LOW	OFF or ON	OFF or ON	Cooling
YES	ON	ON	LOW	OFF or ON	OFF or ON	Cooling

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