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HEAT CONTROLLER
INSTALLATION INSTRUCTIONS
t i n y
HIGH-EFFICIENCY CONDENSING UNITS FEATURING
e e ar a r r th t h h ffrrie r i i e n n d dl dl l y y y r r e f r i g e r a n t
EARTH-FRIENDLY R-410A REFRIGERANT
1 1
RSG - 6 ⁄2 & 7 ⁄2 TON
WARNING
92-42665-14-01
[ ] INDICATES METRIC CONVERSIONS
SUPERSEDES 92-42665-14-00
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TABLE OF CONTENTS I. SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 II. INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 III. CHECKING PRODUCT RECEIVED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 IV. EQUIPMENT PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 V. WHY USE AN AIR COOLED SPLIT SYSTEM?. . .
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1.0 SAFETY INFORMATION ! WARNING IMPORTANT: ALL MANUFACTUR- ER PRODUCTS MEET CURRENT ! WARNING FEDERAL OSHA GUIDELINES FOR SAFETY. CALIFORNIA THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED PROPOSITION 65 WARNINGS ARE LICENSED SERVICE PERSONNEL FOR PROPER INSTALLATION, REQUIRED FOR CERTAIN PROD- ADJUSTMENT AND OPERATION OF THIS UNIT. READ THESE INSTRUC- UCTS, WHICH ARE NOT COVERED TIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERA- BY THE OSHA STANDARDS. TION. FAILURE TO FOLLOW THES
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II. INTRODUCTION This booklet contains the installation and operating instructions for your self-contained air conditioner. There are a few precautions that should be taken to derive maximum satisfaction from it. Improper installation can result in unsatisfactory operation or danger- ous conditions. Read this booklet and any instructions packaged with separate equipment required to make up the system prior to installation. Give this booklet to the owner and explain its provisions. The owner shou
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V. WHY USE AN AIR COOLED SPLIT SYSTEM? • With an air cooled system, you have no water or sewer connections to make, and no troublesome and costly water treatment problems. • Since the condensing unit is located outside the building, and the low profile air han- dling unit can be installed in the drop ceiling or in the conditioned space, you will not need a separate equipment room which takes up valuable building space. • Because of the simple design of the condensing unit, installation is quick
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1 1 VI. STANDARD UNIT FEATURES — 6 ⁄2 AND 7 ⁄2 CABINET — Galvanized steel with a durable powder coat paint finish. The cabinet front and sides are formed into a one piece unitized design with stamped louvers to provide protection for the condenser coils. SERVICE ACCESS — Control box with separation between line and control voltages, as well as compressor and other refrigerant controls are accessible through removable top and side panels (without affecting normal operation of unit). Condenser fan
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TABLE 2 PHYSICAL AND ELECTRICAL DATA TABLE (RSG) Condensing Unit 078 090 Operating Weight (lbs.) [kg] 264 [119.8] 287 [130.2] Shipping Weight (lbs.) [kg] 283 [128.9] 306 [138.8] COMPRESSOR: Quantity 11 Type Scroll RPM 3500 CONDENSER FANS: Quantity 11 CFM [L/s] 4700 [2218] 4700 [2218] Diameter (in.) [mm] 24 [610] 24 [610] 1 1 Motor Horsepower (ea.) [W] ⁄3 [249] ⁄3 [249] Type PSC PSC RPM 1075 1075 CONDENSER COIL: Quantity 11 1 Rows 1 ⁄2 2 Fins per Inch 20 22 Square Feet [m2] 22.2 [3] 22.2 [3] Fins
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C. ORDER PARTS When reporting shortages or damaged parts, or when ordering repair parts, give the complete unit model and serial numbers which are stamped on the Unit Rating Plate. D. STANDARD ITEMS The condensing unit consists of a completely assembled package which includes a com- pressor, a condenser coil, fan, fan motors, outdoor control box, factory wiring, factory tubing and fittings. E. INSTALLATION GENERAL NOTE: These units must be installed outdoors. No ductwork can be attached, or othe
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FIGURE 4 ROOFTOP INSTALLATION NYLON SLINGS SPREADER BARS VIII. REFRIGERANT PIPING DATA CONDENSING UNITS ARE SHIPPED WITH A NITROGEN HOLDING CHARGE. EVACUATE CONDENSING UNIT BEFORE CHARGING WITH REFRIGERANT. TABLE 3 REFRIGERANT PIPING DATA Equivalent Length (ft.) [m] of straight type “L” tubing for non-ferrous valves and fittings (brazed). Tube Size, Solenoid Angle Short Radius Long Radius Tee, Tee, O.D. Valve Valve Ell Ell Line flow Branch Flow 1/2 70 [21.3] 8.3 [2.5] 1.6 [0.5] 1.0 [0.3] 1.0 [0.
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! WARNING DO NOT USE OXYGEN TO PURGE LINES OR PRESSURE SYSTEM FOR LEAK TEST. OXYGEN REACTS VIOLENTLY WITH OIL, WHICH CAN CAUSE AN EXPLOSION RESULTING IN SEVERE PERSONAL INJURY OR DEATH. FIGURE 5 LIQUID LINE PRESSURE DROP PER 100 FEET EQUIVALENT LENGTH (TYPE L COPPER TUBING) NOTES: 1. When evaporator coil is above condenser, the pressure drop due to vertical lift (.5 PSIG per foot of lift) must be added to the pressure drop derived from this curve. 2. Size liquid line for no more than 10°F loss (
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7. Insulate the liquid line whenever the heat pick-up or transfer can affect the sub-cool- ing. 8. Care should be taken to avoid transmission of noise or vibration to building structure. FIGURE 6 SUCTION LINE SYSTEM CAPACITY LOSS IN PERCENT PER 100 FEET EQUIVALENT LENGTH (TYPE L COPPER TUBING) NOTES: 1. The minimum velocity line (700 fpm) is recommended for cooling only units with verti- cal or horizontal run refrigerant lines. 2. For suction pressure drop (PSIG), multiply percent (%) loss by 1.
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5. When making up refrigerant piping, take every precaution to prevent dirt and moisture from entering the piping. 6. Locate the condensing unit and evaporator(s) as close together as possible to mini- mize piping runs. 7. Liquid or suction lifts not to exceed 60 ft. TABLE 4 RECOMMENDED VAPOR AND LIQUID LINE SIZES FOR VARIOUS LENGTHS OF RUN RECOMMENDED VAPOR AND LIQUID LINE SIZES FOR VARIOUS LENGTHS OF RUN EQUIVALENT LIQUID LINE O.D. VAPOR LINE O.D. LENGTH TO SIZES (INCHES) SIZES (INCHES) EVAPOR
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VIX. WIRING NOTE: Field wiring must comply with the National Electric Code (CEC in Canada) and any local ordinance that may apply. X. ELECTRICAL POWER It is important that proper electrical power is available at the unit. Voltage must not vary more than 10% of that stamped on the rating plate. (See Electrical Data Table for mini- mum and maximum voltage.) Interphase voltage variation on three-phase units must not be more than 3%. Contact local power company for correction of improper voltage or
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XVI. R-410A REFRIGERANT A. TOOLS REQUIRED FOR INSTALLING & SERVICING R-410A MODELS Manifold Sets: -Up to 800 PSIG High Side -Up to 250 PSIG Low Side -550 PSIG Low Side Retard Manifold Hoses: -Service Pressure Rating of 800 PSIG Recovery Cylinders: -400 PSIG Pressure Rating -Dept. of Transportation 4BA400 or 4BW400 ! CAUTION R-410A systems operate at higher pressures than R-22 systems. Do not use R-22 service equipment or components on R-410A equipment. B. SPECIFICATION OF R-410A: Application: R-
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D. REPLACEMENT UNITS To prevent failure of a new condensing unit, the existing evaporator tubing system must be correctly sized and cleaned or replaced. Care must be exercised that the expansion device is not plugged. For new and replacement units, a liquid line filter drier should be installed and refrigerant tubing should be properly sized. Test the oil for acid. If positive, a suction line filter drier is mandatory. IMPORTANT: WHEN REPLACING AN R-22 UNIT WITH AN R-410A UNIT, EITHER REPLACE TH
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TABLE 5 FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS SOLID COPPER WIRE - AWG 3.0 16 14 12 10 10 10 2.5 16 14 12 12 10 10 2.0 18 16 14 12 12 10 50 100 150 200 250 300 Length of Run - Feet (1) (1) Wire length equals twice the run distance. NOTE: The condensing unit is shipped with a holding charge of dry nitrogen which must be purged from the unit before evacuation. 1. Since the condensing unit itself must be evacuated, open the suction, discharge and liquid shut-off valves. 2. Use a refrigerat
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TABLE 6 REQUIRED OZS. R-410A PER FT. OF TUBING Tube Size Liquid Vapor O.D., In. oz/ft oz/ft 1/2 1.06 0.04 5/8 1.65 0.07 3/4 2.46 0.10 7/8 3.28 0.13 1 1/8 0.22 1 3/8 0.34 1 5/8 0.48 2 1/8 0.84 Quantities based on 110°F liquid and 45°F vapor. BASIC SYSTEM CHARGE* Unit Basic System Model Charge, Oz. [g] * RSG078 178 [5046] RSG090 242 [6861] *-System with 0 Feet [0] of tubing. 15. Note weight of refrigerant tank. 16. When system has stabilized, check superheat at the suction line service valve. The
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FIGURE 10 ANTI-SHORT CYCLE TIMER B. LIQUID PRESSURE CONTROL Outdoor fan motor speed control designed to regulate condenser head pressure at low ambients by varying the air volume through the condenser. Has been tested and is avail- able through the parts department. C. LIQUID LINE SOLENOID VALVE LIQUID LINE SOLENOID VALVE (24V) — Recommended for all split system applica- tions, to prevent refrigerant migration during off cycles. See wiring connection (See Figure 11). Solenoid to be located in li
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XX. MISCELLANEOUS A. CHARGE CHARTS FIGURE 12 RSG078 SYSTEM CHARGE CHART 1 6 ⁄2 TON CONDENSER 6-1/2 TON CONDENSING UNIT 60HZ. REFRIGERANT R-410A 525 115 500 110 475 105 450 100 425 95 400 90 375 85 350 80 325 75 70 300 65 275 60 250 55 225 200 175 100 105 110 115 120 125 130 135 140 145 150 155 160 165 Pressure at Suction Service Port (psig) REQUIRED OUNCES R-410A CHARGE PER FOOT OF TUBING TUBE SIZE LIQUID VAPOR LINE LINE O.D. IN. 1/2 1.06 5/8 1.65 1-1/8 .22 1-3/8 .34 REFRIGERANT REQUIRED: 178 OZ
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FIGURE 13 RSG090 SYSTEM CHARGE CHART 1 7 ⁄2 TON CONDENSER WITH 10 TON EVAPORATOR 7-1/2 TON CONDENSING UNIT 60HZ. REFRIGERANT R-410A 525 115 500 110 475 105 450 100 425 95 400 90 375 85 350 80 325 75 300 70 275 65 250 60 55 225 200 175 100 105 110 115 120 125 130 135 140 145 150 155 160 165 Pressure at Suction Service Port (psig) REQUIRED OUNCES R-410A CHARGE PER FOOT OF TUBING VAPOR TUBE SIZE LIQUID LINE O.D. IN. LINE 1/2 1.06 5/8 1.65 1-1/8 .22 .34 1-3/8 REFRIGERANT REQUIRED: 239 OZ. WITH 0 FT.
