BARD Cabinet Finishes and Corrosion Coating Options

Transcription

1 BARD Cabinet Finishes and Corrosion Coating Options Bard understands that corrosive environments require special cabinet finishes or component coatings to withstand harsh or corrosive outdoor conditions. These conditions may be encountered at various locations, and the following example installations require the use of additional protective options: Wastewater treatment plants Gas and oil refinery operations Battery manufacturers Sulfur water areas Pulp and paper mills Wineries Chemical Plants Salt water coastal installations Mining industry Airports Unit Model Number Nomenclature Cabinet finishes, coil coatings, and unit coatings are listed in the unit specification sheets under the model nomenclature section. Go to the Bard website at to find specifications of all Bard units. Model nomenclature lists 15 individual characters to specify options that may be ordered for equipment. Refer to character position 12 and 14 for specific coating and finish options available for each product * * * * * * * * * * * x * x * Color and Cabinet Finish X Beige textured enamel finish 1 White textured enamel finish 4 Buckeye Gray textured enamel finish 5 Desert Brown textured enamel finish 8 Dark Bronze textured enamel finish A Aluminum S Stainless Steel Coil and Unit Coating Options X Non-Coated Evaporator Coil, Non-Coated Condenser Coil. 1 Coated Evaporator Coil, Non-Coated Condenser Coil. 2 Non-Coated Evaporator Coil, Coated Condenser Coil. 3 Corrosion Resistance Phenolic Coated Evaporator Coil and Condenser Coil. 4 Condenser Section Component Coating, Corrosion Resistance Phenolic Coated Evaporator Coil and Condenser Coil. 5 Internal and External Cabinet Component Coating, Corrosion Resistance Phenolic Coated Evapo rator Coil and Condenser Coil. Form No. S Page 1 of 10

2 Standard Exterior Painted Steel Finishes and Constructions All unit models are available in a variety of colors including Beige, White, Buckeye Gray, Desert Brown, and Dark Bronze. See unit specifications for exact colors offered for each model. Painted steel finishes are very resilient regarding scratches and abrasions. They also offer excellent corrosion protection under most application conditions where the unit is not exposed to harsh chemicals, salt spray, or other severe environmental conditions. Exterior cabinets of standard Bard HVAC products are constructed with 16, 18, or 20 gauge zinc coated steel that is cleaned, rinsed, sealed and dried prior to a polyurethane primer being applied, followed by a baked on textured enamel. This coating system has been tested to 1000 hours exposure time per ASTM B testing standards. Exterior cabinet screws and fasteners use a Magni 550 coating system. Parts coated to this specification are capable of withstanding neutral salt spray testing for a minimum of 1000 hours with no red rust. Exterior Aluminum Finish and Construction Aluminum exterior finish cabinets are often selected for reduction in unit weight, and corrosion resistance. Aluminum exterior finish cabinets are available for most unit models. The exterior sides, door panels, and service access doors are of a stucco textured Aluminum 3003 H14 material with excellent corrosion resistance. Exterior cabinet screws and fasteners use a Magni 550 coating system. Parts coated to this specification are capable of withstanding neutral salt spray testing for a minimum of 1000 hours with no red rust. Form No. S Page 2 of 10

3 Exterior Stainless Steel Finish and Construction Exterior Stainless Steel finish cabinets are often selected for corrosion and chemical resistance. Higher grades of stainless steel are often specified to meet the requirements of harsh environments. Units may not only be exposed to windblown dust, dirt, lint, and fibers but also may be exposed to corrosive agents. The Bard stainless steel unit offers a high quality stainless steel grade enclosure and fasteners for years of operation in these conditions. Features: Sides, doors, grilles, back panels, and top are 316 grade stainless steel. Base, condenser partition, and fan shroud are 304 grade stainless steel. Stainless steel exterior cabinet screws, washers, nuts, and bolts are used. Stainless steel outdoor motor mount and motor mount hardware. Compressor mounting hardware is stainless steel and hex no-spin rivet nuts are used in the unit base. Corrosion resistant coating is applied to fan blade. Bard highly suggests units exposed to extremely harsh environments, high quantities of airborne dirt and dust, or sprayed with water hose and splashing water be ordered with the Blank Off Plate (BOP) ventilation option. The BOP ventilation option installs plates over the fresh air intake and exhaust openings. Stainless Steel Screws 316 Grade Stainless Steel Cabinet Coated Fan Blade Stainless Steel Motor Mount Stainless Steel Compressor Bolts 304 Grade Stainless Steel Base Form No. S Page 3 of 10

4 Coil Only Coating Options Evaporator and Condenser Coil Coating Options All models use a standard aluminum fin copper hairpin evaporator and condenser coil. An additional corrosion resistant coating may be ordered for the evaporator coil, condenser coil, or both evaporator and condenser coils. Phenolic Coated coils will withstand exposure to many corrosive atmospheres with the exception of strong alkalis, strong oxidizers, wet bromine, and chlorine and fluorine in concentrations greater than 100 ppm (part per million). Because the resistance is dependent upon the environment and unit application, contact Bard for job specific recommendations. Aluminum Fin (Standard Coil) Corrosion Resistance Coated Fin (Optional Coil Coating) * * * * * * * * * * * x * x * Coil Coating Options X Option - All models use a standard aluminum fin copper hairpin evaporator and condenser coil. The X option unit contains our standard non-coated evaporator and condenser coils which are acceptable for typical non-corrosive environments. 1= Evaporator Coated - The 1 option unit contains a corrosion resistance phenolic coated evaporator coil and non-coated condenser coil. Coated evaporator coils are normally suggested for use in the areas where indoor corrosive chemicals be present for additional coil protection. 2= Condenser Coated - The 2 option unit contains a phenolic coated condenser coil and a standard non-coated evaporator coil. Coated condenser coils are normally suggested for use in areas where outdoor corrosive chemicals or salt may be present for additional coil protection. 3= Evaporator and Condenser Coated - The 3 option unit contains our corrosion resistance phenolic coated evaporator coil and a corrosion resistance phenolic coated condenser coil. Coated evaporator and condenser coils are normally suggested for use in areas where indoor and outdoor corrosive chemicals or salt may be present for additional coil protection. Form No. S Page 4 of 10

5 Coil and Unit Coating Options Evaporator Coil, Condenser Coil, and Cabinet Coating Options Bard now offers a high performance, multipurpose, surface tolerant, two-component chemically-cured epoxy semi-gloss coating for wall mount units. Two options are available to offer additional equipment protection for applications in chemical processing, fertilizer storage areas, power plants, petroleum refineries, pulp and paper mills, water and sewage treatment plants and mining operations. Adhesion: (ASTM D 4541) Excellent Salt Spray Resistance: (ASTM B 117) Excellent Direct Impact Resistance: (ASTM D 2794) Very Good Abrasion Resistance: (ASTM D 4060) Excellent Humidity Resistance: (ASTM D 2247) Excellent Exterior Exposure: (45 South Lt. Industrial) Very Good (Normal, expected loss of gloss for epoxy coatings) Chemical Resistance*: (ASTM D hr. contact) Excellent. Resists splash and spillage of alkalis, salts, moisture, oils, greases, food stuffs, and detergents, 50% sodium hydroxide, 28% ammonia, 5% trisodium phosphate, 25% citric acid, 25% lactic acid, 10% sulfuric acid, crude oil, 10% hydrochloric acid, 20% tannic acid, 5% sodium chloride, 10% ammonium hydroxide, sewage, 50% ethanol, gasoline, methanol, kerosene, naphtha, xylol. * All results based on testing of system comprised of two coats at 4 mils (100 microns) DFT per coat * * * * * * * * * * * * * x * Coil Coating Options 4 Condenser Section Component Coating, Corrosion Resistance Coated Evaporator Coil and Condenser Coil. 5 Internal and External Cabinet Component Coating, Corrosion Resistance Coated Evaporator Coil and Condenser Coil. Highest Level of Protection. 4= Exterior Unit Cabinet & Condenser Section - The 4 option unit contains our corrosion resistance phenolic coated coils and a coated unit condenser section. By coating the condenser section, the copper tubing, motor mount, sheet metal parts, filter/drier and compressor housing in the condenser area are protected with a epoxy semi-gloss coating. 5= Exterior & Interior - The 5 option unit contains our corrosion resistance phenolic coated coils and is both internally and externally coated. By coating the interior and exterior of the unit, the copper tubing, motor mount, sheet metal parts, filter/drier, compressor housing, blower assembly, and any optional ventilation features are protected with a epoxy semi-gloss coating. This is the highest level of protection available. It is required for applications where the internal and external features of the unit are exposed to a high level of salt or corrosive chemicals. Form No. S Page 5 of 10

6 Enginering Specification for Coating Process and Materials Coils: 1. The condenser (and/or) evaporator coil(s) shall be coated with Blygold PoluAl XT by a certified licensed applicator. The coating product manufacturer shall be able to document a Class 5B result on a Cross Hatch Adhesion Test (ASTM D5339) and the successful completion of accelerated product testing for a minimum 4000 hours in both salt spray (ASTM B117) and acid salt spray (ASTM G85) tests. Blygold PoluAlXT aluminum-impregnated polyurethane coil coating shall be applied ensuring total penetration and coverage without bridging or significantly affecting the heat transfer ability of the coil. The total dry film thickness of the coating shall be 25 microns (1 mil). The coating shall provide inherent protection against ultraviolet radiation and have a dry temperature resistance from -4 F to 302 F (-20 C to 150 C). Refrigerant Circuit and Casing/Cabinets: 2. The refrigerant circuit, piping and equipment components, and all exposed metal surfaces including the exterior (and/or) interior casing/cabinets are to be coated with Devoe Devran 224HS high-build epoxy & Devoe Devthane 379UV A high-gloss aliphatic urethane. The objective is to coat all piping, equipment components and exterior (and/or) interior sheet metal with a protective coating. DEVRAN 224HS High Build Epoxy Coating Performance Data Property Method Result Abrasion Resistance ASTM D 4060, CS-17, 1000 gram load, 1000 cycles 101 mg loss Adhesion ASTM D psi Elongation ASTM D 522, Method B Passes 180 bend 1/4 inch mandrel Exterior Exposure Exposed in light industrial area facing 45 South for 3 years No blistering, cracking or delamination. Less that 1/8 inch under cutting at scribe. Humidity Resistance ASTM D 2247, 4000 hours No blistering, cracking, softening or adhesion loss. Impact Resistance ASTM D 2794, 10 ga. steel >48 inch-pounds, direct impact. 32 inch-pounds, reverse impact. Moisture Permeability ASTM E perms Pencil Hardness ASTM D H Salt Fog Resistance ASTM B 117, 1000 hours No effect on film integrity or adhesion. Less than 1/8 inch undersutting at scribe. Less than 4% rusting at edges. Coating Process and Warranty Unit coating process requires extended lead times. Contact Bard at time of purchase for estimated delivery. Units may ship separately after coating process, and additional shipping costs may apply. Coating warranty will be supplied by NJC/Blygold Atlanta. Please review and complete all warranty and registration provided. More information is vailable at Form No. S Page 6 of 10

7 Coating Process and Warranty Form No. S Page 7 of 10

8 Coating Process and Warranty Form No. S Page 8 of 10

9 Coating Process and Warranty Form No. S Page 9 of 10

10 DEVTHANE TM 379UVA Aliphatic Urethane Gloss Enamel Performance Data Abrasion Resistance Property Method Result ASTM D 4060, CS-17, 1000 gram load, 1000 cycles 69 mg loss Accelerated Weathering ASTM G 53, UVB 313, 5000 hours 92% gloss retention Adhesion ASTM D psi Exterior Exposure Exposed in Florida facing 45 South for 3 years No blisering, cracking or loss of adhesion. Less than 15% loss of gloss. Humidity Resistance ASTM D 4585, 1000 hours No blistering, cracking, softening, or loss of adhesion. Pencil Hardness ASTM D H Salt Fog Resistance ASTM B 117, 1000 hours (no primer) No effect on film integrity or adhesion. Less than 1/8 inch undercutting at scribe. Less than 5% rusting at edges. Stain Resistance ASTM D 1308, 1 week contact at 77 F. Crayon, lipstick, coffee, soil medium, show polish, grape juice, ink, marker, spray paint. Stains were removed with detergent and water or Xylene or MEK, or Graffiti Cleaner. Form No. S Page Page of 10 of 10 Bard Manufacturing Company, Inc. Bryan, Ohio Due to our continuous product improvement policy, all specifications subject to change without notice. Before purchasing this appliance, read important energy cost and efficiency information available from your retailer. Form No. S3556 June 2018 Supersedes: 318