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Resumen del manual
Relieve refrigerant pressure from tubing. Back off locknut from Compatible Fitting onto tube. Cut fitting between threads and O-ring. See Fig. 3. Remove tubing section remaining in threaded portion of fitting. Discard locknut. Clean, flux and insert new tube end into remaining portion of Compatible Fitting. Wrap valve in wet rag to prevent damaging factory-made joints. Heat and apply low-temperature (430 F) solder. SWEAT CONNECTION — Frontseat unit service valves. Relieve refrigerant pressure from tubing. Clean and flux area around leak. Repair, using low-temperature (430 F) solder Evacuate or purge evaporator coil and tubing system. Add refrigerant charge. See Refrigerant Charging. Step 4 — Make Electrical Connections — Be sure field wiring complies with local and national fire, safety and electrical codes, and voltage to system is within limits shown in Table 3. Contact local power company for correction of improper line voltage. NOTE: Operation of unit on improper line voltage constitutes abuse and could affect Carrier warranty. See Table 3. Do not install unit in system where voltage may fluctuate above or below permissible limits. See Table 3 for recommended fuse sizes. When making electric connections, provide clearance at unit for refrigerant piping connections. INSTALL BRANCH CIRCUIT DISCONNECT PER NEC of adequate size to handle unit starting current. Locate disconnect within sight from and readily accessible from unit, per Section 440-14 of NEC (National Electrical Code). ROUTE LINE POWER LEADS — Extend leads from disconnect through power wiring hole provided (see Fig. 1) and into unit splice area. Remove control box cover to gain access to unit wiring. CONNECT GROUND LEAD AND POWER WIRING — Connect ground lead to ground connection in control box for safety. Then connect power wiring. See Fig. 4. Splice line power leads to yellow and black pigtails. Use wire nuts and tape at each connection. Connect unit wiring to copper power wiring only. ---GROUND LEAD - l-PHASE CONN. TO DISCONNECT" PER NEC « SPL _------------— yel CE CONNECTIONS ----FIELD WIRING - FACTORY WIRING -GEIgrounding lug - — BLK - 1- PHASE COND UNIT Fig. 4 — Line Power Connections CONNECT CONTROL POWER WIRING — Route 24-v control wires through control wiring hole and connect to pigtails supplied with unit (Fig. 1). Splice control leads to brown and blue pigtails on all units. See Fig. 5. Use furnace or fan coil transformer as 24-v (40-va minimum) supply for system as shown in Fig. 5, or use accessory transformer. NOTE: Some 38EH units are equipped with a fan time delay. This permits indoor fan to continue to operate for Table 3 — Electrical Data (60 Hz) OUTDOOR UNIT 38EH V/PH OPER VOLTS* COMPR FAN FLA MCA MAX FUSEf OR HACR TYPE CKT BKR (Amps) Max Min LRA RLA 015 018 024 030 036 042 048 208-230/1 253 197 37 5 43 0 66 0 88 0 88 0 108 0 110.0 64 78 140 18 6 18 1 21 4 26 0 07 0.7 07 09 0.9 0.9 25 87 105 18 2 24 2 23 6 27.7 35.0 15 15 30 40 40 45 50 060 230/1 253 207 130 0 29 3 1 9 38.5 60 036-5 042-5 048-5 060-5 208-230/3 253 187 65.1 74.0 92 0 98 0 97 17.1 196 20 9 09 09 25 1.9 15.3 22.3 27 0 28.0 25 35 45 45 036-6 042-6 048-6 060-6 460/3 508 414 32 8 37 0 46 0 49.0 4 76 69 72 104 1 6 1 6 1 6 1 6 74 103 106 145 15 15 15 20 FLA — Full Load Amps HACR — Heating, Air Conditioning, Refrigeration LRA — Locked Rotor Amps MCA — Minimum Circuit Amps RLA — Rated Load Amps ‘Permissible limits of the voltage range at which unit will operate satisfactorily fTime-delay fuse NOTE: Control circuit is 24 v on all units and requires external power source 3 886 THERMOSTAT SUBBASE 99TZ90008I25 OR THERMOSTAT SUBBASE 99TZ90008I25 OR (COOLING AND ONE-STAGE HEATING) THERMOSTAT SUBBASE 99TZ90036120 (COOLING AND TWO-STAGE HEATING) *|FR and IFM are located in furnace on heating-cooling applications If accessory IFR is required for cooling-only applications, locate (IFR) in fan coil C — Contactor (12-va) Field Splice HC — Heating Control IFM — Indoor Fan Motor _____Field Wiring IFR — Indoor Fan Relay Trans — Transformer - Factory Wiring NOTE1 Refer to unit wiring label for wire colors C to G and Cto Y connections. Fig. 5 — Control Circuit Connections 90 seconds, which provides additional cooling after compressor has cycled off. Refer to separate installation instructions packaged with fan time delay (shipped with unit). A WARNING To avoid personal injury, be sure indoor blower has stopped before attempting service or maintenance. Step 5 — Start-Up 1. When equipped with a crankcase heater, energize heater a minimum of 24 hours before starting unit. To energize heater only, set thermostat at OFF position and close electrical disconnect to outdoor unit. 2. Backseat (open) liquid and suction line service valves. 3. Unit is shipped with valve stem(s) frontseated, and caps installed. Replace stem caps after system is opened to refrigerant flow (backseated). Replace caps finger tight and tighten additional 1/6...