| (2) Mechanical equipment shall be mounted on vibration isolators as required to prevent unacceptable structure-borne vibration. Ducts, pipes, etc. connected to mechanical equipment which is a source of vibration shall be isolated from the equipment with vibration isolators. (3) Prior to completion and acceptance of the facility, all mechanical systems shall be tested, balanced, and operated to demonstrate to the design engineer or his representative that the installation and performance of these systems conform to the requirements of the plans and specifications. (A) Upon acceptance of the mechanical system, the owner shall be provided with parts lists and procurement information with numbers and description for each piece of equipment. (B) Upon acceptance of the mechanical system, the owner shall be provided with instructions in the operational use of systems and equipment as required. (4) All heating, ventilating and air conditioning (HVAC) systems shall comply with and shall be installed in accordance with the requirements of National Fire Protection Association 90A, Standard for the Installation of Air Conditioning and Ventilating Systems, 2002 edition (NFPA 90A), NFPA 99, Chapter 6 and the requirements contained in this subsection. (5) All rooms and areas in the ESRD facility shall have provision for positive ventilation. Fans serving exhaust systems shall be located at the discharge end and shall be conveniently accessible for service. Exhaust systems may be combined, unless otherwise noted, for efficient use of recovery devices required for energy conservation. Supply air to the building and exhaust air from the building shall be regulated to provide a positive pressure within the building with respect to the exterior. (A) The systems serving all treatment areas/rooms, exam rooms, and isolation rooms, shall be capable of maintaining a temperature range between 68 and 78 degrees Fahrenheit and a relative humidity range between 45% and 60%. (B) The indoor design temperature in all other areas shall be between 68 and 75 degrees Fahrenheit with relative humidity of not less than 30%. (6) Ventilation systems for the reuse room and airborne isolation room shall be connected to an air exhaust system to the outdoors which is separate from the building exhaust system, have an exhaust fan located at the discharge end of the system, and have an exhaust duct system of noncombustible corrosion-resistant material as needed to meet the planned usage of the system. (A) The bottoms of wall-mounted return and exhaust air openings shall be at least six inches above the floor. All exhaust air openings and return air openings located higher than six inches but less than seven feet above the floor shall be protected with grilles or screens having openings through which a one-half inch sphere will not pass. (B) Exhaust outlets shall be above the roof level and arranged to minimize recirculation of exhaust air into the building. Exhaust outlets shall be located at least 25 feet from any fresh air intake of ventilating systems. (Prevailing winds and proximity to other structures may require more stringent requirements.) Plumbing and vacuum vents that terminate five feet above the level of the top of the air intake may be located as close as 10 feet. (C) If applicable, the reuse room and the airborne isolation room exhaust systems shall be connected to the emergency electrical system and shall meet the requirements of paragraph (10) of this subsection. (7) All toilet exhaust ventilation shall be exhausted to the outdoors. Exhaust systems may be combined, unless otherwise noted, for efficient use of recovery devices required for energy conservation. (8) To reduce utility costs, facility design may utilize energy conserving procedures including recovery devices, variable air volume, load shedding, systems shutdown, or reduction of ventilation rates (when specifically permitted) in certain areas when unoccupied. In no case shall patient care be jeopardized. (9) Mechanical systems shall be arranged to take advantage of outside air conditions by using an economizer cycle when appropriate to reduce heating and cooling systems loads. Innovative design that provides for additional energy conservation while meeting the intent of this subsection for acceptable patient care may be presented to the department for consideration. (10) Outside air intakes shall be located at least 25 feet from exhaust outlets of ventilating systems, combustion equipment stacks, plumbing vents, or areas which may collect vehicular exhaust or other noxious fumes. (Prevailing winds and proximity to other structures may require more stringent requirements). Plumbing vents that terminate five feet above the level of the top of the air intake may be located as close as 10 feet. (11) Fully ducted supply, return and exhaust air for HVAC systems shall be provided for all patient treatment care areas, storage rooms, and where required for fire safety purposes. Combination systems, utilizing both ducts and plenums for movement of air in these areas, shall not be permitted. (12) Air handling systems shall not be started or operated without 30% or equal minimum efficient rating value (merv) of 8 and the filters installed in place. Ducts shall be cleaned thoroughly and throughout by a certified air duct cleaning contractor when the air handling systems have been operating without the required filters in place. When ducts are determined to be dirty or dusty, the department shall require a written report assuring cleanliness of duct and clean air quality. (13) Ductwork with duct-mounted humidifiers shall be provided with a means of removing water accumulation. An adjustable high-limit humidistat shall be located downstream of the humidifier to reduce the potential of condensation inside the duct. All duct take-offs shall be sufficiently downstream of the humidifier to ensure complete moisture absorption. Reservoir-type water spray or evaporative pan humidifiers shall not be used. (14) All central air handling systems shall be equipped with filters having efficiencies 30% or equal to 8 merv. Filter efficiencies shall be average efficiencies tested in accordance with American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE), Inc., Standard 52.2, 1999 edition, Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size. All joints between filter segments, and between filter segments and the enclosing ductwork, shall have gaskets and seals to provide a positive seal against air leakage. Air handlers serving more than one room shall be considered as central air handlers. All documents published by ASHRAE as referenced in this section may be obtained by writing or calling the ASHRAE, Inc. at the following address or telephone number: ASHRAE, Inc., 1791 Tullie Circle, Northeast, Atlanta, Georgia 30329; telephone (404) 636-8400. (A) Filtration requirements for air handling units serving single rooms. Dedicated air handlers serving single rooms shall be equipped with nominal filters installed at the return air system. (B) A filter bed shall be located upstream of the supply fan. Filter frames shall be durable and constructed to provide an airtight fit with the enclosing ductwork. (15) Thermal and acoustical insulation for air handling systems. Asbestos insulation shall not be used. (A) Air ducts and casings with outside surface temperature below ambient dew point or temperature above 80 degrees Fahrenheit shall be provided with thermal insulation. (B) Linings in air ducts and equipment shall meet the Erosion Test Method described in Underwriters Laboratories (UL), Inc., Standard Number 181 (relating to Factory-Made Duct Materials and Air Duct Connectors), April 4, 1996 edition. This document may be obtained from the Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, Illinois 60062-2096. (C) Interior and exterior insulation, including finishes and adhesives on the exterior surfaces of ducts and equipment, shall have a flame spread rating of 25 or less and a smoke developed rating of 50 or less as required by NFPA 90A, Chapters 4 and 5. (D) Insulation of soft and spray-on types shall not be used where it is subject to air currents or mechanical erosion or where loose particles may create a maintenance problem. (16) Fire dampers shall be located and installed in all ducts at the point of penetration of a required two-hour or higher fire rated wall or floor in accordance with the requirements of NFPA 101, §20.1. (17) Smoke dampers shall be located and installed in accordance with the requirements of NFPA 101, and NFPA 90A, Chapter 5. (A) Smoke dampers shall close on activation of the fire alarm system by smoke detectors installed and located as required by National Fire Protection Association 72, National Fire Alarm Code, 2002 Edition (NFPA 72), Chapter 8; NFPA 90A, Chapter 6; and NFPA 101, §18.3.7; the fire sprinkler system; and upon loss of power. Smoke dampers shall not close by fan shutdown alone unless it is a part of an engineered smoke removal system. Cont'd... |
