Carrier 50HX024-060- Manuals

Table 1 — Physical Data UNIT 50HX 024 030 036 042 048 060 REFRIGERANT R-22 Refrigerant Control* Acutrol™ System SHIPPING WEIGHT (lb) Without Base Rail 309 340 368 368 411 425 With Optional Base Rail 296 327 355 355 398 412 COMPRESSOR Type Scroll INDOOR FAN Centrifugal — Direct Drive Speeds 3 3 3 3 V...

• Size ductwork for cooling air quantity (cfm). The mini- mum air quantity for proper electric heater operation islisted in Table 2. Heater limit switches may trip at air quan-tities below those recommended. NOTE: A 90-degree elbow must be provided in the supplyductwork to comply with UL (Underwrite...

CONVERTING HORIZONTAL DISCHARGE UNITS TODOWNFLOW (Vertical) DISCHARGE — ICM (IntegratedControl Motor) UNITS — Units are shipped in a horizontalconfiguration. To convert a horizontal unit for downflow (ver-tical) discharge, perform the following steps: Before performing service or maintenance operati...

5. Fully secure the duct flanges using the remaining screws provided. The finished kit installation accommodates a 14 3 ⁄ 4 -in. x 14 3 ⁄ 4 -in. duct. Step 6 — Provide for Condensate Disposal NOTE: Ensure that condensate-water disposal methods com-ply with local codes, restrictions, and practices. T...

CONNECTING GROUND LEAD TO GROUND LUG —Refer to Fig. 27 and 28. Connect the ground lead to the chas-sis using the ground lug in the wiring splice box. ROUTING CONTROL POWER WIRES — NON-ICMUNITS (24 v) — Form a drip-loop with the thermostat leadsbefore routing them into the unit. Route the thermostat ...

NOTE: Dimensions shown are for round-duct units. For rectangular-duct units, see Fig. 4 and 5. Fig. 26 — Duct Panel Knockouts Fig. 27 — Wiring Splice Boxes LEGEND NEC — National Electrical Code Field Wiring Splice Connections NOTE: Use copper wire only. Fig. 28 — Line Power Connections Fig. 29 — Con...

SPECIAL PROCEDURES FOR 208-V OPERATION Make sure that the power supply to the unit is switchedOFF before making any wiring changes. Electrical shockcan cause personal injury or death. 1. Disconnect the orange transformer-primary lead from the contactor. See unit wiring label. 2. Remove the wirenut f...

CHECKING AND ADJUSTING REFRIGERANT CHARGE— The refrigerant system is fully charged with R-22 refrig-erant, and is tested and factory sealed.NOTE: Adjustment of the refrigerant charge is not requiredunless the unit is suspected of not having the proper R-22charge. The charging label and the tables sh...

Table 4B — Superheat Charging Table, 50HX030 TEMP (F) OUTDOOR ENTERING AIR INDOOR AIR — 1000 CFM Indoor Air — Ewb (F) 54 56 58 60 62 64 66 68 70 72 74 76 65 SPH 5.5 5.5 5.5 5.5 12.5 19.6 26.6 26.9 27.2 27.5 26.5 25.4 70 SPH * * * * 10.5 17.5 24.5 24.8 25.1 25.4 25.1 24.8 75 SPH * * * * 8.4 15.5 22.5...

Table 4E — Superheat Charging Table, 50HX048 TEMP (F) OUTDOOR ENTERING AIR INDOOR AIR — 1600 CFM Indoor Air — Ewb (F) 54 56 58 60 62 64 66 68 70 72 74 76 65 SPH 25.8 26.3 27.0 27.6 28.6 29.6 30.5 30.9 31.3 31.7 31.2 30.7 70 SPH 24.2 24.0 23.8 23.6 25.0 26.4 27.8 28.4 29.0 29.7 29.6 29.5 75 SPH 19.7 ...

Table 5 — Required Suction-Tube Temperature (F)* SUPERHEAT TEMP (F) SUCTION PRESSURE AT SERVICE PORT (psig) 61.5 64.2 67.1 70.0 73.0 76.0 79.2 82.4 85.7 0 35 37 39 41 43 45 47 49 51 2 37 39 41 43 45 47 49 51 53 4 39 41 43 45 47 49 51 53 55 6 41 43 45 47 49 51 53 55 57 8 43 45 47 49 51 53 55 57 59 10...

For Integrated Control Motors (ICM) — To configure the 50HXunit, move the 5 Easy Select board wires to the terminalswhich control the airflow. Refer to the Easy Select interfaceboard (Fig. 32) located next to the terminal and to Fig. 31. Perform the following steps for basic system configuration.AUX...

STRAINER ACCUMULA T O R COMPRESSOR STRAINER LCS OUTDOOR COIL INDOOR COIL A B D C Check Valves A Closed B Open C Closed D Open LEGEND LCS — Loss of Charge Switch Acutrol™ Metering Device Check Valve (Arrow indicates direction of flow) COOLING CYCLE 1. Hot gas from compressor flows through the 4-way v...

STRAINER ACCUMULA T O R COMPRESSOR STRAINER LCS OUTDOOR COIL INDOOR COIL A B D C Check Valves A Open B Closed C Open D Closed LEGEND LCS — Loss of Charge Switch Acutrol™ Metering Device Check Valve (Arrow indicates direction of flow) HEATING CYCLE 1. Hot gas from compressor flows through the 4-way v...

Table 8 — Wet Coil Pressure Drop UNIT SIZE 50HX AIRFLOW (cfm) PRESSURE DROP (in. wg) 024 600 0.012 700 0.022 800 0.027 900 0.039 030 900 0.039 1000 0.057 1200 0.072 036 1000 0.051 1200 0.061 1400 0.068 1600 0.075 042 1000 0.030 1200 0.048 1400 0.057 1600 0.078 048 1400 0.068 1600 0.075 1800 0.088 06...

d. Remove caked-on dirt from wheel and housing with a brush. Remove lint and/or dirt accumulations from wheeland housing with vacuum cleaner, using soft brush at-tachment. Remove grease and oil with mild solvent. e. Reassemble wheel and cut-off plate into housing.f. Reassemble motor into housing. Be...

COOLING AND HEATING TROUBLESHOOTING CHART SYMPTOM CAUSE REMEDY Compressor and out-door fan will not start. Power failure Call power company. Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer,control relay, or defrost board Repla...

COOLING AND HEATING TROUBLESHOOTING CHART (cont) SYMPTOM CAUSE REMEDY Excessive suctionpressure. (Heat) Outdoor coil frosted Move timer on control board to 30 minutesbetween defrost cycles. (Cool) High heat load Check for source and eliminate. Compressor valves leaking Replace compressor. Reversing ...

START-UP CHECKLIST (Remove and Store in Job File) I. PRELIMINARY INFORMATION MODEL NO.: DATE: SERIAL NO.: TECHNICIAN: II. PRE-START-UP (insert checkmark in box as each item is completed) M VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT M REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS...