valutazioni - 5, GPA: 3.6
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Facilità d'uso
Supply voltage must be within tolerances shown in Table 6. See Fig. 6 for System Label Diagram. Phase unbalance must not exceed 2%. Operation of unit on improper supplv voltage or with excessive phase unbalance constitutes abuse and is not covered by Carrier Warranty. POWER WIRING — All power wiring must comply with applicable local requirements and National Electrical Codes. Install a field-supplied branch circuit disconnect switch of a type that can be locked OFF or OPEN. Run power wires from disconnect switch through unit power opening (D on Fig 1) and connect to terminal block just inside opening. See Table 5 for maximum allowable wire size. Power terminal block is in the control box. Remove outer panel and #10 screw on the door. Swing door open, remove screws on barrier panel and remove barrier panel. Replace barrier panel when power wiring is completed. Condenser fans must rotate clockwise when viewed from above. If necessary, correct direction of fan rotation by reversing any 2 power input wires at disconnect switch. Affix crankcase heater decal to unit disconnect switch. CONTROL CIRCUIT WIRING — Internal control voltage on 38 AQ units is both 115-volts and 24-volts. All control circuit wiring must comply with applicable local Table 3 — Refrigerant (R-22) Charge and Piping Selection Data LENGTH OF PIPING (ft)* OUTDOOR 0-25 26-60 61-100f UNIT 38AQ Line Size (in. O.D.) L V L V L V 024 % 1% % 1% % 1 % 028 % 1% % 1% % 21/8 034 % 15/8 % 2'/s % 2'/s Approximate System Charge (lb)t 024 55 58 75 028 61 65 83 034 71 79 93 L — Liquid Line V — Vapor Line 'Approximately 4 elbows assumed In determining pipe sizes fMaximum length of interconnecting piping is 100 feet. ^Approximate system charge is for estimating only It includes charge requirements for one outdoor unit, matching Indoor coil, and Interconnecting piping System should be charged in accordance with installation instructions NOTE Maximum liquid line size is %-in OD Maximum R-22 system charge Is 85 lb (024), 95 lb (028), 105 lb (034) Table 4 — Minimum Outdoor Air Operating Temperature UNIT 38AQ COMPR CAP. (%) COND TEMP (F) MINIMUM OUTDOOR TEMPERATURE (F)* Std Unit 32LT Motormaster® 100 90 28 -20 50 80 41 -20 100 90 34 -20 67 80 37 -20 100 90 30 -20 67 80 33 -20 'Applies to cooling mode of operation only Table 5 — Maximum Allowable Field Wire Sizes UNIT 38AQ VOLTS (60-Hz) WIRE SIZE CONN. 024,028,034 208/230 6 AWG to 350 MCM TB 460, 575 14 AWG to 2/0 TB — Terminal Block (with integral compression terminal) and national codes. Route remote control wiring to unit control box through control opening (C on Fig. I) and connect to control terminal block inside the control box. All external control wiring is 24-volt, NEC Class 2. SAIL SWITCH — It is highly recommended that an indoor airflow switch (field installed) be installed and interlocked with the outdoor unit, to prevent the outdoor unit from operating in the event of indoor airflow failure (example: broken fan belt). Operation of compressor with no indoor airflow causes compressor to operate in a vacuum which can damage bearing surfaces. Therefore, install a field-supplied sail switch in the supply air ductwork of the mating indoor fan coil unit, and wire to outdoor unit. See Fig 7. 4 Table 6 — Electrical Data (3 Phase, 60 Hz) UNIT COMPRESSOR FANS 38AQ Model Volts MCA MOCP RLA LRA MTA Total Kw (total) FLA (ea) Nameplate Supplied* No. 1 No 2 No. 3 Min Max 510 208/230 187 253 103 175 76 0 345 53* 45 4 6 46 024 600 460 414 508 51 80 36 0 173 50t 3 3 4 1 9 1 9 1 9 100 575 518 632 41 60 28 6 120 40* 1 6 1.6 1.6 510 208/230 187 253 145 225 100 0 446 70* 6 2 6 6 6 6 028 600 460 414 508 69 110 48 0 223 33* 3 34 3 0 3 0 3 0 100 575 518 632 62 100 43.4 164 6 it 2.5 2.5 2.5 510 208/230 187 253 170 250 120 0 506 84* 6 2 6 6 6 6 034 600 460 414 508 72 110 50 0 253 35* 3 3 6 30 3 0 3 0 100 575 518 632 64 100 45 0 176 63* 2 5 2 5 2 5 FLA — Full Load Amps (fan motors) LRA — Locked Rotor Amps MCA — Minimum Circuit Amps Complies with NEC Section 430-24 MOCP — Maximum Overcurrent Protection (fuse only) MTA — Must Trip Amps (circuit breaker) NEC — National Electric Code RLA — Rated Load Amps (compressor) 'Units are suitable for use on electrical systems where voltage supplied to the unit terminals is not below or above the listed limits t3-Pole circuit breaker ^6-Pole circuit breaker r Tfc- -| . 40RR900I80 IFM 40 RR 024,028,034 I----1 .DISCONNECT. FIELD . ~ ^ I 1- - - - - - - KD>+ “ -—»«/IRE PE^V I PER .POWER ^ ^ w *WIKt KtK , NEC U,SUZPLI i i i i |_ H M H H -N§HI^2Hi - .4 MOTOR 1 r”1 FIELD DISCONNECT pH mt I DISCONNECT pa mt m I ffl] ■ POWER “ I PER P ™ .SUPPLY == 101 EQUIP JWJgND TB1 T CONNECTION GRN ' EQUIP I GND ^cKcP ______A. LEGEND Equip Gnd — Equipment Ground IFC — Indoor Fan Contactor IFM — Indoor Fan Motor TB — Terminal Block (Board) NOTE...
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