User manual GOODMAN MANUFACTURING IO-258B CONDENSING UNIT

[. . . ] CONDENSING UNIT AIR CONDITIONING INSTALLATION & SERVICE REFERENCE Important Safety Instructions The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It is the owner's and installer's responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure to heed safety information increases the risk of personal injury, property damage, and/or product damage. Goodman Manufacturing Company, L. P. © 2005-2006 2550 North Loop West, Suite 400, Houston, TX 77092 www. goodmanmfg. com -or- www. amana-hac. com P/N: IO-258B Date: April 2006 tion and disposal of refrigerants. [. . . ] · Never add anything other than R-22 to an R-22 cylinder or R-410A to an R-410A cylinder. The service equipment used must be listed or certified for the type of refrigerant used. · Store cylinders in a cool, dry place. Never use a cylinder as a platform or a roller. 1 1/2 2 2 1/2 3 3 1/2 4 5 5/8 5/8 5/8 3/4 3/4 7/8 7/8 1/4 1/4 1/4 3/8 3/8 3/8 3/8 3/4 3/4 3/4* 3/4** 7/8** 1 1/8 1 1/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/4 3/4 7/8 7/8** 1 1/8 1 1/8 1 1/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 * 7/8" required for full ratings ** 1 1/8" required for full ratings *** Lines greater than 74 feet in length or vertical elevation changes more than 50 feet refer to the Remote Cooling Service Manual or contact your distributor for assistance. 2 Liquid Line Suction Line 1. The ends of the refrigerant lines must be cut square, deburred, cleaned, and be round and free from nicks or dents. Any other condition increases the chance of a refrigerant leak. Mounting the evaporator coil above the condensing unit will require an inverted loop in the suction line adjacent or near the connection to the evaporator. The top of the loop must be slightly higher than the top of the coil. 2. "Sweep" the refrigerant line with nitrogen or inert gas during brazing to prevent the formation of copper-oxide inside the refrigerant lines. The POE oils used in R-410A applications will clean any copper-oxide present from the inside of the refrigerant lines and spread it throughout the system. This may cause a blockage or failure of the metering device. After brazing, quench the joints with water or a wet cloth to prevent overheating of the service valve. Ensure the filter drier paint finish is intact after brazing. If the paint of the steel filter drier has been burned or chipped, repaint or treat with a rust preventative. This is especially important on suction line filter driers which are continually wet when the unit is operating. NOTE: Be careful not to kink or dent refrigerant lines. Kinked or dented lines will cause poor performance or compressor damage. Do NOT make final refrigerant line connection until plugs are removed from refrigerant tubing. NOTE: Before brazing, verify indoor piston size by checking the piston kit chart packaged with indoor unit. Mounting the condensing unit above the evaporator coil will require oil traps at equal intervals along the suction line. Install 1 oil trap for a height difference of 15­25 feet between indoor and outdoor units. Install 2 oil traps for a difference of 26-50 feet, 3 for 51-100 feet, and 4 for 101-150 feet. Insulation is necessary to prevent condensation from forming and dropping from the suction line. Armflex (or satisfactory equivalent) with 3/8" min. In severe conditions (hot, high humidity areas) 1/2" insulation may be required. [. . . ] Refer to the superheat table provided for proper system superheat. Add charge to lower superheat or recover charge to raise superheat. SYSTEM SUPERHEAT Am bient Condenser Inlet Tem p. (°F Drybulb) 65 115 100 95 90 85 80 75 70 65 60 5 5 13 17 5 5 10 14 19 25 5 7 10 12 17 20 26 30 5 5 12 17 21 25 28 32 33 Return Air Tem perature (°F Drybulb) 70 75 80 85 3 5 5 18 20 26 29 32 35 37 Two-Stage Thermostat with Three Low Voltage Wires to Remote System Start Up Adequate refrigerant charge for a matching evaporator and 15 feet lineset is supplied with the condensing unit. NOTE: If lineset exceeds 15 feet in length, refrigerant should be added at . 6 ounces per foot of liquid line. [. . . ]