Read ANSI/ASHRAE/ACCA Standard 180-2008 text version

ASHRAE/ACCA Standard 180-2008

Addresses "often inconsistent" practices for inspecting and maintaining HVAC systems in commercial institutional and other buildings where the public may be exposed to the indoor environment Practices range from rigorous maintenance to run-to-failure policies

ASHRAE/ACCA Standard 180-2008

Systems fail to provide the level of work they were designed for without inspection and maintenance Standard practice needed because manufacturer information typically applies only to individual components

Types of Facilities Covered

Governmental facilities Educational facilities Healthcare/hospital facilities Institutional buildings Offices Places of assembly Restaurants Retail and wholesale businesses

Purpose

Purpose: to establish minimum HVAC inspection and maintenance requirements that preserve a system's ability to achieve acceptable thermal comfort, energy efficiency, and indoor air quality in commercial buildings (i.e., not industrial or residential buildings of three or fewer stories above grade)

"Where maintenance is neglected, energy costs rise significantly and equipment life drops dramatically. With HVAC&R systems responsible for about 60 percent of site electrical energy use, it's imperative that we provide consistent maintenance and inspection to improve energy efficiency along with thermal comfort and indoor air quality. When systems are not maintained, indoor air quality, occupant comfort and energy efficiency all suffer. -Robert Baker,

chair of the committee that wrote the standard

Energy Concerns

In the U.S. alone, buildings account for:

72% of electricity consumption 39% of energy use 38% of all carbon dioxide (CO2) emissions 40% of raw materials use 30% of waste output (136 million tons/yr) 14% of potable water consumption

Written Maintenance Program ­ Minimum Requirements

Inventory of equipment and systems to be inspected/ maintained that impact the buildings performance -Use this list to establish unacceptable performance indicators -List will include inspection frequencies -List will include maintenance tasks

Written Maintenance Program ­ Minimum Requirements

Maintenance Plan Development -Performance objectives, from basis of design and operational criteria (document the source, could be design documents, ASHRAE standards and other documents) -Defines how maintenance will be performed for a specific facility in terms of time and resource allocation

Written Maintenance Program ­ Minimum Requirements

Maintenance Plan Development -Condition indicators (could be deformation, discoloration, oxidation, corrosion, scale, leakage of fluid or vapor, excessive noise/ vibration, loose/missing fasteners, ice, frost or condensate, worn or damaged insulating materials, design and operational criteria)

Written Maintenance Program ­ Minimum Requirements

Inspection or Maintenance Tasks -Description or list of tasks -Frequency -If two successive inspections show unacceptable conditions, then the responsible party shall investigate causes -Inspection results may warrant a change in the frequency of inspections

Written Maintenance Program ­ Minimum Requirements

Verification -Document that the inspection has been conducted -Verification ­ confirmation by examination or commissioning that a specific objective has been fulfilled

Inspection Lists

Inspection Lists

Air Distribution Systems

-Control systems and devices -Grilles, registers and diffusers -Bearings -Dampers -Moisture/mold -Insulation/vapor barriers -Inspect internal lining from AHU to first turn or up to 20 feet into the supply air plenum

Inspection Lists

Air handling units (AHUs)

-Filters and housing -Control boxes, devices -P-traps -Fan belt -Motor contactor -Fan blades -Refrigerant -Drive alignment

Inspection Lists

Air handling units

-Panels -Bearings -Condensate drip pan -Thermal coils -Evidence of moisture carry-over -Dampers -Condensate pump -Insulation (Inspect internal lining from AHU to first turn or up to 20 feet into the supply air plenum)

Inspection Lists

Chillers Absorption chillers Air-cooled chillers Water-cooled chillers Condensing units Cooling tower and evaporative cooled devices

Inspection Lists

Control systems Dehumidification and humidification devices Steam distribution systems HVAC water distribution systems Pumps

Inspection Lists

Boilers Engines, Micro-Turbines Furnaces, Micro-Heaters

Inspection Lists

Free-standing heating or cooling coils Free-standing fans (e.g., exhaust, transfer, return) Indoor section duct-free splits

Inspection Lists

Fan coils, hot water and steam unit heaters Terminal and Control boxes (e.g., VAV, fan-powered, bypass)

Inspection Lists

Package terminal air conditioners Package terminal heat pumps Rooftop units Water source heat pumps

Broken Linkage

Torn Screen - OAI

Dirty Screen - OAI

Water in Fan Motor Compartment

· Water in OAI

Information

ANSI/ASHRAE/ACCA Standard 180-2008

27 pages

Find more like this

Report File (DMCA)

Our content is added by our users. We aim to remove reported files within 1 working day. Please use this link to notify us:

Report this file as copyright or inappropriate

188482


You might also be interested in

BETA
Microsoft Word - HK-BEAM-4-03 Pilot May 2003 Ver2.doc
SECTION 15900 - HVAC INSTRUMENTATION AND CONTROLS
0504LP0267530.pdf