valutazioni - 2, GPA: 4
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Facilità d'uso
Remove the outer panel and remove the no. 10 screw on the door. Swing open door, remove screws on barrier panel and remove barrier panel. On 38AB054,064 and 084 units, remove two screws holding hinged sheet metal barrier and swing open barrier. Condenser fans must rotate clockwise when viewed from above. If necessary, correct direction of fan rotation by interchanging any two power input wires at disconnect switch. Affix crankcase heater decal to unit disconnect switch. Control Circuit Wiring — Internal control voltage on 38AD units is 115 volts. Internal control voltage on 208- and 230-volt 38AB units is the same as unit voltage. On 460- and 575-volt 38AB units, it is 115 volts. All control circuit wiring must comply with applicable local and national codes. Remote control wiring must enter unit control box thru control opening (G on Fig. 1) and connect to terminal block inside the control box. 772 6 Table 7 — Maximum Field Wire Sizes UNIT SIZE VOLTS (60-Hz* WIRE SIZE CONN. 38AD 024,028,034 208 230 6 AWG to 350 MCM TB 460 575 14 AWG to 2/0 044 460 575 208 230 6 AWG to 350 МС1Щ TB CT 38 A В 054,064 208 230 6 AWG to 350 MCM CT 460 575 6 AWG to 3/0 084 All 6 AWG to 350 MCM. CT CT — Compression Terminal (attached to terminal block) TB — Terminal Block (with integral compression terminal) TB Eb- Ш-- Œb- B-- ЕЪ -т I -I - TC|’ TC2‘ ---- E----------LL-S2fe3-- TWO STEP COOLING 38AB054, 064 AND 084 . J LEGEND CR — Control Relay TC — Thermostat, Cooling LLS — Liquid Line Solenoid ---Field Wiring TB — Terminal Board (at unit) *Field Supplied Fig. 10 — Control Circuit Wiring with Line Voltage (115, 208- or 230-volt) Thermostat LINE VOLTAGE REMOTE CONTROL - Install field-supplied line voltage thermostat(s) as shown in Fig. 10 for two-step cooling. Wire liquid line solenoid as shown. LOW-VOLTAGE REMOTE CONTROL - Install field-supplied accessories as shown in Fig. 11 or Fig. 12 for either two-step cooling or two-step cooling, one-step heating. Wire liquid line solenoids as shown. START-UP Preliminary Checks 1. Compressor oil level must be visible at sight glass in each compressor crankcase. Add oil if necessary. Each compressor must float freely on its mounting springs. All internal wiring connections must be tight, and all barriers and covers must be in place. Toggle switches for units 38AB054.,064 and 084 must be in “On” position. Electrical power source must agree with unit nameplate rating. All service valves must be open. Fan cycling thermostat sensing bulb must be in air stream under fan no. 1. Crankcase heater must be firmly locked into the compressor crankcase. Leak Test the entire refrigerant system by the Pressure Method described in the Carrier Standard Service Techniques Manual, Chapter 1, Section 1-6. Use R-22 at approximately 25 psig backed up with an inert gas to a total pressure not to exceed 245 psig. Evacuate and Dehydrate the entire refrigerant system by either of the methods described in the Carrier Standard Service Techniques Manual, Chapter 1, Section 1-7. 2 3. 4. 5. 6. 7. 58AB, 0 5 4,0 6 4, 084. SDRl „CRj—ЧЦ— SDRzHZ i-ig---- t-2i (IMS) -44^0 —@h5" <0-O-2- THERMOSTAT НН07ДТ072 SUBBASE HH93AZ080 LEGEND AHA — Adjustable Heat Anticipator Cooling Compensator Control Relay Heating Device Indoor Fan Relay Indoor Motor Starter Liquid Line Solenoid Relay (Accessory) CC CR HD IFR IMS LLS R SR — Solenoid Relay TB — Terminal Board TC — Thermostat, Cooling TH — Thermostat, Heating - Factory Wired - Field Wired j Terminal Board Conn. at Unit SDR — Solenoid Dropping Relay *Field Supplied Fig. 11 — Control Circuit Wiring with 24-Volt Accessories (38AB Units Only) 7 772 CONTROL POWER AT 38AD UNIT ♦ 115-1-60 VOLT ♦
Fans - 38AB064 (1.24 mb)
Fans - 38AB054 (1.24 mb)
Fans - 38AB084 (1.24 mb)
Fans - 38AD028 (1.24 mb)