System type

system_type – One of two methods for describing HVAC system presence within house.

Synopsis
module residential; class house { set {RESISTIVE=16, TWOSTAGE=8, FORCEDAIR=4, AIRCONDITIONING=2, GAS=1} system_type; } object house { system_type RESISTIVE|FORCEDAIR; }

GAS
Specifies natural gas heating

AIRCONDITIONING
Specifies electric cooling units

FORCEDAIR
Specifies central ventilation system (including duct fans)

TWOSTAGE
Specifies two-speed central ventilation fan systems

RESISTIVE
Specifies purely resistive heating

Default
If neither GAS nor RESISTIVE are set, the model assumes the house has a heat pump, a one-speed central ventilation fan, and auxiliary heating with an auxiliary deadband for heating.

Examples
Gas Heating //method 1 object house { system_type GAS; } //method 2 object house { heating_system_type GAS; cooling_system_type NONE; auxiliary_system_type NONE; }

Heat pump with two-speed fan

//method 1 object house { system_type AIRCONDITIONING|TWOSTAGE; } //method 2 object house { heating_system_type HEAT_PUMP; cooling_system_type ELECTRIC; fan_type TWO_SPEED; auxiliary_system_type ELECTRIC; auxiliary_strategy DEADBAND; }