HVAC
HVAC Marking
HVAC stands for the closely functions of Heating, Ventilating, and Air Conditioning, which are the primarily components to providing indoor environmental comfort. All HVAC pipe labels are required by ANSI standards to be color-coded and feature lettering that explains pipe use and arrows that show the direction of flow. HVAC labels must indicate the name of the contents and use arrows to show the direction of flow of the material. A color is used in combination with the text to note the hazards related to the contents.
ANSI requires labels to be applied close to valves, flanges, branches, changes in direction and wherever pipes pass through walls.
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Pipe marker labels indicate which pipelines are dangerous, direction of flow, and pipe contents.
Duct Labeling
While HVAC pipes are used to transport hot and cold water, ducts are commonly used to deliver and remove air, dust, and gases. Rectangular HVAC ducts are made from firm insulation panels to effortlessly fabricate any custom duct shape and size. And because the ducts are made of insulation themselves, they do not require any further insulation.
HVAC ducts deliver and remove air. They provide supply air, return air, and exhaust air for effective air conditioning in most work settings.
According to ANSI, labels for HVAC ducts should be made of sturdy plastic that is 1/8 inch thick with predrilled holes to attach the label to the duct with metal ties. The lettering has to be yellow, with a minimum size of 1/4 inch, on top of a white background that should be at least 2.5" x .75".
Heavy-Duty Valve Tags from DuraLabel are an ideal solution for HVAC duct labeling. They provide a solid backing for Continuous Vinyl Supply, making lasting and effective labeling for most varieties of HVAC ducts.
Each Valve tag includes pre-drilled holes to hang labels with metal ties. They have a strong construction that allows them to endure locations where harsh and abrasive conditions.
The Air-Conditioning and Refrigeration Institute
The Air-Conditioning and Refrigeration Institute (ARI) assigns colors to containers used for new and reclaimed refrigerants that meet ARI 700 purity standards. ARI 700 tests the quality of new and reclaimed refrigerants used in new and existing refrigeration and air-conditioning equipment.
New refrigerants are not automatically assigned colors. Chemical producers must request color assignments from ARI, but they cannot be assigned based on product tradenames. Colors are only given to general refrigerant designations specified by ASHRAE Standard 34.
ASHRAE Standard 34 sets the numbering and defines Safety Group Classifications for refrigerants according to their toxicity and flammability. Threshold Limit Value-Time Weighted Average classifies toxicity. It is measured over a normal 8 hour workday or 40 hour workweek where nearly all workers may be exposed without negative effect.
Under the ARI 700, the color designation for containers with flammable refrigerants also requires a red band across the top of the label. Refrigerants that do not have an assigned color or are only sold in small quantities will be assigned a light green color.
