Low steam pressure is supplied for direct and indirect heating systems and medium pressure steam is supplied for the kitchen equipment. The electrical current for lighting is 220-110 volts A.C. and for power is 240-120 volts D.C. In the machinery room, in the second sub-basement there are located the electrically-driven centrifugal pumps for the high and low pressure water systems, the suction tanks, the hot water generators for supplying hot water to bathrooms and kitchens, the vacuum return pumps and separators for the vacuum heating system, water filters, cold water and steam condensation meters, drip tanks and ejectors, electrical-driven air compressors, receivers and storage tanks, the vacuum cleaning plant, the ammonia compressors, brine and water coolers, condensers, ice-making tank, ice storage space, ice cubers and crushers, filters for drinking water and water supply to freezing tank and circulating pumps for the brine and drinking water sys tems. HEATING AND VENTILATING SYSTEMS The heating system is of the vacuum type with duplicate, motor-driven vacuum pumps. The heating system is divided into two separate systems, one which serves the lower portion of the building, known as the lower system, and the high system which serves that portion of the building above the lower pipe space. The high system is of the down-feed type, with supply mains in the pipe space above the fifteenth floor at an elevation of 270 ft. From the machinery room there is carried an 18 in. supply main to this pipe space, at which level it is distributed through loops to the various risers. From these loops there are taken risers which feed the various radiators throughout the ball room, private dining rooms, reception rooms, bed and bath rooms. The return risers for the high system are collected in the lower pipe space at an elevation of 93 ft. and main return riser is run to vacuum pumps in the machinery room. The low system is of the up-feed type with supply and return mains on the ceiling of the first sub-basement. system is for all of the public rooms on the lower floors, such as dining rooms, grille, lobby and waiting room, together with the various service quarters. The above systems also serve the various indirect fan stacks throughout the building. All radiators are of the smooth-section, cast-iron type, with nipples at bottom and top tie rods. Radiators are in general located under windows and are exposed in all cases, except in the main rooms. All radiators in exterior bath rooms are of the same type as those installed in the bedrooms while those in the interior bath rooms are of the wall type. Throughout the main rooms the radiators are enclosed in ornamental grills and are in general provided with thermostat control operated by multiple thermostats. All steam and return piping throughout the building is covered with nonheat-conducting covering, same being recanvased where exposed in finished spaces. Expansion and contraction of piping is taken care of by swings and bends, the expansion loops being in the furred ceiling or pipe chases at exterior walls. The main supply riser is provided with a slip expansion joint. The piping is anchored at suitable points so that all expansion is away from the anchors towards expansion loops or swings. Sleeves have been provided around piping where same pass through walls or floors. Where pipe is exposed in finished. rooms escutcheons are placed around same. Thermostat control is installed on al tempering and reheating stacks of the supply fans, these also being of the multiple type. Adjacent to thermostats, located in ducts, there has been installed mercurial thermometers with perforated stem casing and flange for connection to sheet metal work. The vacuum valves are of the Haines manufacture and the duplicate vacuum return pumps are of the Nash Engineering Company's manufacture. This is the first building in which a pump of this type and manufacture has been used for vacuum heating purposes. These pumps are provided with the usual automatic vacuum control apparatus, gauge board, air separating tank and strainers. |