UFC 4-740-14
1 August 2002
not encase the tubing in concrete slabs if hot water radiant floor heating is utilized.
Consider recovered heat from sources such as refrigerant desuperheaters, water-
source heat pumps (including ground-source), air-source water heaters, and heat from
exhaust air heat recovery coils, if available, for the radiant floor system.
7-2.2.4
HVAC Distribution. Provide uniform air velocities of no more than 9.14 m
per minute (30 ft. per minute) 300 mm (12 in.) from the floor in all child activity spaces,
unless otherwise noted. Supply each space with a minimum of 15 liters/second (32
ft.3/minute) of outdoor air per each occupant to control odors.
7-2.2.5
system for easy maintainability with all controls on as few panels as possible in the
mechanical room. Design so CDC personnel maintain control for individual care area
temperatures. Consider providing for connection to installation EMCS for monitoring
purposes.
The Navy may require a connection to installation EMCS in which
EMCS overrides local thermostat controls. Exceptions to this rule will be considered on
a case-by-case basis.
7-2.2.5.1
Design for temperature in all child activity areas to be 20 to 24 degrees C
(68 to 75 degrees F) in the winter and 20 to 26 degrees C (68 to 78 degrees F) in the
summer. Since children spend a great deal of time on the floor, temperature control is
very important. Monitor temperature within 300 mm (12 in.) of the finished floor by
means of a remote mounted bi-metallic thermometer. Use room thermostats that adjust
accordingly to maintain the appropriate temperature as measured by the bi-metallic
thermometer.
7-2.2.5.2
Design to maintain a minimum relative humidity of 35 during the heating
season to prevent drying of mucous membranes and to control the spread of diseases.
Design to maintain a maximum relative humidity of 50 percent during the cooling
season. Limit humidity requirements to child activity areas only.
7-2.2.5.3
Provide thermostats 1370 mm (54 in.) above the floor. Incorporate night
and weekend setback capability. The optimum temperature control is zoned and should
be appropriately adjusted for different activity areas. For instance, infant areas may be
more comfortable at a 1 to 3 degrees C (2 to 5 degrees F) warmer temperature than
other areas. Consider this issue and make recommendations for the optimal solution to
heating and cooling distribution at the concept development stage. Install thermostats
accessible to the center director or other designated staff members.
7-2.2.6
Other Special HVAC Systems and Equipment. Consider noise level,
service, and efficiency when locating equipment. Whenever possible, provide HVAC
separate from the other building systems. Apart from other advantages, this will
facilitate better filtration of the dust and molds that many children are particularly
sensitive to. In addition to heating and cooling equipment, consider a
humidifier/dehumidifier to meet required levels. Also note the following:
Provide proper exhaust venting for range and clothes dryer.
7-15
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