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Hotels ,Motels ,Design Criteria, Public Spaces

Public Spaces

In areas where freezing may be a problem, fan coil units shall have a minimum space temperature control point.

Public Space air conditioning shall be on a separate and independent circuit from Guest Rooms. The design shall allow individual areas to be heated or cooled as required; therefore, consideration shall be given to the use of separate air handling units for similar spaces or subdivision thereof.

Public Spaces heating and cooling units shall be central station, packaged type, air handling units, which have chilled water for cooling and hot water or steam coils for heating. Control valves shall be two or three way modulating type.

The AHUs for public spaces shall be installed in a machine room. Ceiling mounted units are not preferable. If units are to be ceiling mounted provide fixed access ladders, catwalks, lighting and sufficient head room and space for servicing.

Reheat systems may NOT be used unless prior approval is obtained from Sheraton.

Low velocity distribution system shall be used wherever appropriate. High velocity distribution system is applicable only for high ceiling areas.

Tamper proof space thermostats shall be located to sense average room temperature at a height of 1500mm above the finished floor.

Ceiling diffusers shall be used for all air distribution systems. Perforated ceilings (plenum type) are not permitted. Air return systems shall be ducted. Plenum type return systems are not permitted.

The amount of outside air introduced into the conditioned spaces for ventilation shall be no less than that required by local codes, or that indicated below. Manual controls shall be provided to allow full air recirculation for preheating or precooling of spaces and adjustment of the fresh air damper.

At least one thermostat shall be provided for each separate system and zone.

Each zone shall be provided with means of shutting off or reducing the energy used during periods of no use or alternate uses.

For areas such as bars with high levels of smoke, an electronic smoke filtration system must be installed.

Reheat systems serving multiple zones, other than those employing variable air volume for temperature control, shall be provided with automatic controls that shall reset the system cold air supply to the highest temperature that will satisfy the zone requiring the greatest cooling.

Control systems which measure CO2 levels may be considered as an energy saving device for large public area spaces with varying population densities. These devices control the outside air ventilation rates.

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