Carrier Infinity 25VNA4 Installation Instructions Manual

Also see for Infinity 25VNA4: Service manual Owner's manual

25VNA4: Installation InstructionsManufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.5Outdoor units may be connected to indoor section using accessorytubing package or field-supplied refrigerant grade tubing of correct sizeand condition. For tubing requirements beyond 80 ft. (24.38 m),substantial capacity and performance losses can occur. Follow the pipesizing recommendations in the 25VNA Product data to manage theselosses.Refer to Table 1 for field tubing diameters. Refer to Table 2 foraccessory requirements.* Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length line sets.Notes:1.Do not apply capillary tube indoor coils to these units.2.For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal and / or greater than 20 ft. (6.1 m) vertical differential, an accessory Liquid Line Solenoid must be installed.CAUTION!UNIT DAMAGE HAZARDFailure to follow this caution may result in equipment damage orimproper operation.Do not leave system open to atmosphere any longer than minimumrequired for installation. POE oil in compressor is extremelysusceptible to moisture absorption. Always keep ends of tubing sealedduring installation.CAUTION!UNIT DAMAGE HAZARDFailure to follow this caution may result in equipment damage orimproper operation.If ANY refrigerant tubing is buried, provide a 6 in. (152.4 mm) verticalrise at service valve. Refrigerant tubing lengths up to 36 in. (914.4 mm)may be buried without further special consideration. Do not bury lineslonger than 36 in. (914.4 mm).Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)UNIT SIZELIQUID VAPOR*ConnectionDiameterTubeDiameterConnectionDiameterMax (Rated)DiameterMinimum TubeDiameter25VNA424 3/8 3/8 3/4 3/4 5/825VNA436 3/8 3/8 7/8 7/8 5/825VNA448 3/8 3/8 7/8 1-1/8 3/425VNA460 3/8 3/8 7/8 1-1/8 3/4Table 2 – Accessory UsageACCESSORYREQUIRED FORLOW-AMBIENT COOLINGAPPLICATIONS(Below 55°F/12.8_C)REQUIRED FOR LONG LINEAPPLICATIONS*(Over 80 ft/24.38 m)*. For tubing set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) vertical differential (total equivalent length), an accessory Liquid Line Solenoid must beinstalled.REQUIRED FOR SEACOAST APPLICATIONS(Within 2 miles/3.22 km)Stator Heater Standard Standard StandardEvaporator Freeze Protection Standard with Infinity Control No NoLiquid-Line Solenoid Valve No Yes NoLow-Ambient Control Standard with Infinity Control No NoPuron Refrigerant Balance PortHard-ShutOff TXV Yes††. Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.Yes † Yes†Support Feet Recommended Recommended RecommendedWinter Start Control Standard with InfinityControlStandard with InfinityControl Standard with Infinity ControlEMI Kit No No No