6.9.3 Swimming Pools

Configuration and Design Requirements

Pool Name
Applicability	All pools
Definition	A unique identifier that keys the pool to the construction documents
Units	Text, unique
Input Restrictions	None
Baseline Rules	The name for the baseline building pool should be similar to the proposed design.

Volume
Applicability	All pools
Definition	The volume of the pool
Units	Cubic feet (ft³)
Input Restrictions	None
Baseline Rules	Same as the proposed design

Surface Area
Applicability	All pools
Definition	The surface area of the pool affects heat loss and evaporation.
Units	Square feet (ft²)
Input Restrictions	None
Baseline Rules	Same as the proposed design

Cover
Applicability	All pools
Definition	An indication
Units	Boolean (Yes/No)
Input Restrictions	None
Baseline Rules	The baseline building shall have a pool cover per Section 7.4.5.2 of ASHRAE Standard 90.1-2007.

Cover Schedule
Applicability	All pools
Definition	A schedule indicating when the pool cover is in place
Units	Data structure: schedule, on/off or fractional
Input Restrictions	None
Baseline Rules	Same as the proposed design

Filtration Rate
Applicability	All pools
Definition	The rate at which the pool water is passed through the filtering system when the filtration system is operating
Units	Hours per pool change
Input Restrictions	None
Baseline Rules	Same as the proposed design

Filtration Schedule
Applicability	All pools
Definition	A schedule indicating when the pool filtration system is in operation
Units	Data structure: schedule, on/off or fractional
Input Restrictions	None
Baseline Rules	Same as the proposed design

Temperature
Applicability	All pools
Definition	The temperature at which the pool is maintained
Units	Degrees Fahrenheit (°F)
Input Restrictions	None
Baseline Rules	Same as the proposed design

Temperature Schedule
Applicability	All pools
Definition	A schedule indicating variation in the pool temperature, either seasonally or monthly
Units	Data structure: schedule, temperature
Input Restrictions	None
Baseline Rules	Same as the proposed design

Pumping and Filtration

Pumping Power
Applicability	All pools
Definition	The power used by the pumping system. This is a function of the pumping head (which depends on pipe lengths, sizes, and filtration type), the pump efficiency, the motor efficiency, and the flow rate. Some software may allow these to be entered as separate building descriptors. This value should be consistent with the filtration rate noted above.
Units	Watts (W)
Input Restrictions	None
Baseline Rules	Same as the proposed design unless the proposed design uses special low head filters and premium efficiency motors

Heating Equipment

Heater Type
Applicability	All pools
Definition	The type of equipment that is used to maintain the pool temperature
Units	List: solar, heat pump, gas, oil, or electric resistance
Input Restrictions	None
Baseline Rules	If there is gas or oil on the site, the baseline building shall be modeled with a natural gas or oil pool heater meeting the requirements of Table 7.8 for ASHRAE Standard 90.1-2007. If there is no gas or oil on the site, the baseline building shall be modeled with a heat pump pool heater meeting the requirements of Table 7.8 for ASHRAE Standard 90.1-2007.

Heater Efficiency
Applicability	All pools with heaters
Definition	The thermal efficiency of the pool heater
Units	Unitless, thermal efficiency
Input Restrictions	None
Baseline Rules	See the baseline building rules for heater type

Solar System Features
Applicability	All pools with solar pool heaters
Definition	The collector area, size, efficiency, and pumping characteristics of the solar pool system
Units	Data structure
Input Restrictions	None
Baseline Rules	Not applicable. The baseline building has a pool cover, not solar