Carrier 38HDL024- Manuals

7 STANDARD FEATURES AND FIELD-INSTALLED ACCESSORIES LEGEND *Crankcase heaters are standard on 38HDL units without scroll compressors, and are recommended as an accessory for applications using low-ambient kits. †The 38HDL units are equipped with 4 taps; one for each service valve, and one each on co...

11 UNIT 38HDL 018 024 030 036 048 060 NOMINAL CAPACITY (Btuh) 18,000 24,000 30,000 36,000 48,000 60,000 UNIT OPERATING WEIGHT (LB) 130 136 161 185 222 249 COMPRESSOR Hermetic Type Copeland Copeland Copeland Tecumseh Copeland Copeland Scroll Scroll Scroll Reciprocating Scroll Scroll Model ZR18KC-PFV ...

12 *Full factory charge shipped in outdoor unit. Charge shown is for smallest system combination and is determined based on 25 ft of line. See Application Data section on page 41 for information on longer line lengths and condensing unit combinations. UNIT 40QNB 024 NOMINAL CAPACITY (Tons) 2 NOMINAL...

13 *The 40QAB018 fan coil is a 40QAB024 fan coil, but uses a different motor speed fan tap plug than the 40QAB024. Refer to unit installation instructions for more details. †Condensing (outdoor) unit is shipped with a full charge. The amount of charge shown is for smallest system combination and is ...

14 *The condensing (outdoor) unit is shipped with a full charge. The amount of charge shown is for smallest system combination and is determined based on 25 ft of line. See Application Data section on page 41 for information on longer line lengths and condensing unit combinations. UNIT 40QKB 024 036...

15 Base unit dimensions — 38HDL condensing units UNIT SI ZE 38HD L AB C D E F G H J K L M OP ERA T IN G WE IGHT ft- in . m m ft -in . m m ft -in . m m ft- in . m m ft-i n. mm ft- in . m m ft -in . m m ft-i n. mm ft-i n . mm ft-i n. m m ft- in . m m ft-i n. mm lb kg 018 2-1 1 / 8 638.2 3 -0 15 / 16 9...

21 SYSTEMS INDEX TABLE *Rating at 80 F db, 67 F wb air entering indoor section and 95 F db air entering outdoor section. †The 40QAB024 unit must be field configured to an 018 size unit by changing the motor speed fan tap plug. Refer to Installation Instructions for more details. FAN COIL TYPE INDOOR...

22 COOLING CAPACITIES SYSTEM 1* — 38HDL018 WITH 40QNB024 LEGEND Rating ConditionNot recommended for long-term operation *Refer to Systems Index Table on page 21. NOTES:1. Direct interpolation is permissible. Do not extrapolate.2. The SHG is based on 80 F edb temperature of air entering indoor coil.B...

34 38HDL CONDENSER-ONLY RATINGS See Legend on page 35. SST (F) AIR TEMPERATURE ENTERING CONDENSER (F) 55 65 75 85 95 105 115 125 38HDL018 30 TCG 17.8 16.9 16.0 15.1 14.3 13.4 12.6 12.0 SDT 78.8 88.3 98.0 107.7 117.5 127.4 137.3 145.5 kW 1.07 1.18 1.30 1.44 1.59 1.75 1.94 2.12 35 TCG 19.6 18.7 17.8 1...

36 38HDL CONDENSING UNITS LEGEND *Permissible limits of the voltage range at which unit will operate satisfactorily. †Time-delay fuse. NOTES:1.Control circuit is 24 v on all units and requires an external power source. 2. All motors and compressors contain internal overload protection.3. In complian...

40 Unit selection Select equipment to either match or be slightly less thananticipated peak load. This provides better humidity con-trol, fewer unit cycles, and less part-load operation. For units used in spaces with high sensible loads, base equipment selection on unit sensible load, not on total a...

41 Units equipped with accessory low-ambient kits should also be equipped with accessory wind baffle, crankcaseheater, and winter start kit. Winter start — The use of a winter start control may extend the operation range (generally to 35 F or 40 F)without addition of the low-ambient kit. Winter star...

42 PISTON GUIDE AND REFRIGERANT CHARGES *Charge based on 25 ft of interconnecting tubing. Charge may need to be added for longer tubing runs or when used with certain fan coils.Check unit nameplate for required charge. †The 024 size unit shown is configured as an 018 size unit by changing the motor ...

43 CHANGE IN INDOOR UNIT PISTON SIZE FOR ELEVATION 6. Additional charge — The unit should be charged byweighing in the appropriate charge. Add charge based onthe actual length of line which is over 25 ft of liquid line.Add 0.58 oz of refrigerant per 1 ft increase over the 25 ftline to the charge lis...

44 Sound data CONDENSING UNIT SOUND RATINGS LEGEND dBA — Decibels on the A Scale *Free field is a rating with no reflective surfaces near the unit. Data sound pressure is measured at 1 m from the unit. See Sound PowerData Octave Bands table for more information. NOTE: Units rated in accordance with ...

45 SOUND POWER DATA OCTAVE BANDS — A WEIGHTED LEGEND NOTES:1. Outdoor sound levels are tone corrected values taken in accordance with ARI Sound Standard 270.2. Indoor sound levels are tone corrected values taken in accordance with ARI Sound Standard 350. UNIT FAN SPEED OCTAVE BAND DATA (dBA) 125 250...

49 Control system — The 40QNB unit is equipped with a microprocessor control which operates the system. Thiscontrol is located in the control box of the fan coil unit,with thermistors located in the fan coil inlet and on theindoor coil. These thermistors monitor system operationand control the opera...

50 2. If the room temperature is below the selected tempera- ture, the unit operates for 8 minutes as follows: Thecompressor and outdoor fan will operate for 3 minutes.The indoor fan will operate at low speed, and 30 sec-onds after the compressor stops, the indoor fan stops.The unit remains off for ...

51 Operating mode memory After the system is turned off or after a power failure, thesystem remains in the last operating mode selected. Whenthe system is turned back on, or when power is automati-cally restored, operation continues in the same operatingmode as when the system shut down. Automatic a...

52 Commercial Condensing Units HVAC Guide Specifications Size Range: 1 1 / 2 to 5 Tons Cooling Capacity Carrier Model Number: 38HDL Part 1 — General 1.01 SYSTEM DESCRIPTION A. Outdoor-mounted, air-cooled split system outdoor section suitable for on-the-ground, rooftop, wallhung, balcony, or under-de...

54 Commercial High-Wall Fan Coil Units HVAC Guide Specifications Size Range: 2 Tons Cooling Capacity Carrier Model Number: 40QNB Part 1 — General 1.01 SYSTEM DESCRIPTIONIndoor, wall-mounted, direct-expansion fan coil to bematched with the commercial condensing units. 1.02 QUALITY ASSURANCEUnit shall...

56 Commercial Ceiling-Suspended Fan Coils HVAC Guide Specifications Size Range: 1 1 / 2 to 5 Tons Cooling Capacity Carrier Model Number: 40QAB Part 1 — General 1.01 SYSTEM DESCRIPTIONIndoor, under-ceiling mounted, direct-expansion fancoil to be matched with the 38HDL commercialcondensing unit. 1.02 ...

58 Commercial In-Ceiling Cassette Fan Coil HVAC Guide Specifications Size Range: 1 1 / 2 to 3 Tons Cooling Capacity Carrier Model Number: 40QKB Part 1 — General 1.01 SYSTEM DESCRIPTIONIndoor, in-the-ceiling-mounted, direct-expansion fancoil to be matched with the 38HDL commercialcondensing unit. Uni...