Product data

ManualsBrandsCarrier ManualsHeat Pump38HDL024

The Ideal Complement to Your

Ducted System When It Is Impractical

or Prohibitively Expensive to Use

Ductwork

• choice of 3 compact, attractive fan

coil types for ultimate flexibility in

any room decor

• wide range of accessories available

to meet a variety of installation

requirements

Features/Benefits

An inexpensive and creative

solution to design problems

Carrier’s cooling only duct-free split

systems are a matched combination of

an outdoor condensing unit and one of

3 decorative indoor fan coil units con-

nected only by refrigerant tubing and

wires. One of the 3 fan coil choices

will fit any application you might

encounter.

The fan coils can be mounted on

the wall, at the ceiling, or in the ceiling.

This selection of fan coils permits

inexpensive and creative solutions to

design problems such as:

• add-ons to current space (an office

or family room addition)

• special space requirements (a com-

puter room)

• when changes in the cooling load

cannot be handled by the existing

system (when adding heat-generat-

ing equipment to a currently condi-

tioned space)

• when adding air conditioning to

spaces that are heated by hydronic

or electric heat and have no

ductwork

• historical renovations or any appli-

cation where preserving the looks of

the original structure is essential

38HDL

with 40QAB,QKB,QNB

Duct-Free Cooling Only

Split Systems

to 5 Nominal Tons

Product

Data

40QNB

40QAB

40QKB

38HDL

Summary of content (60 pages)

PAGE 1
Product Data 38HDL with 40QAB,QKB,QNB Duct-Free Cooling Only Split Systems 11/2 to 5 Nominal Tons The Ideal Complement to Your Ducted System When It Is Impractical or Prohibitively Expensive to Use Ductwork • choice of 3 compact, attractive fan coil types for ultimate flexibility in any room decor • wide range of accessories available to meet a variety of installation requirements 40QNB Features/Benefits An inexpensive and creative solution to design problems 40QAB 40QKB Carrier’s cooling only duct-fr
PAGE 2
These compact indoor fan coil units take up very little space in the room and do not obstruct windows. The fan coils are attractively styled to blend with most room decors. Advanced system components incorporate innovative technology to provide reliable cooling performance at low sound levels. Carrier’s duct-free split systems offer the solution of choice. The compressor is outdoors, linked by refrigerant lines to an indoor fan coil locateddirectly in the room it will cool.
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Features/Benefits (cont) The totally enclosed condenser-fan motor means greater reliability under rain conditions, ensuring dependable performance for many years. Individual room comfort Maximum comfort is provided because each space can have individual set points and may be controlled based on actual usage. The air sweep feature provided on high wall and ceilingsuspended systems permits optimal room air mixing to eliminate hot and cold spots for occupant comfort.
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Features/Benefits (cont) HIGH WALL FAN COILS — 40QNB (2 Ton Only) High walls are the most cost-effective duct-free systems. They can be used for simple add-ons and retrofits where wall space is available. CEILING-SUSPENDED FAN COILS — 40QAB (11/2 to 5 Tons) Use ceiling-suspended systems for office and retrofit applications where there is little or no wall space or there is a need to supply large quantities of outside air.
PAGE 5
Model number nomenclature 38 SERIES COOLING ONLY CONDENSING UNITS 38HD L – 024 –– 3 Model 38HD – Air Cooled Condensing Units Voltage Designation 3 – 208/230-1-60 Nominal Capacity 018 – 1-1/2 Tons 024 – 2 Tons 030 – 2-1/2 Tons 036 – 3 Tons 048 – 4 Tons 060 – 5 Tons L – For Light Commercial Duty 40 SERIES COOLING ONLY FAN COILS 40QNB 024 ––– Model 40QNB – High Wall 40QAB – Ceiling Suspended 40QKB – In-Ceiling Cassette 3 Voltage Designation 3 – 208/230-1-60 Nominal Capacity 018 – 1-1/2 Tons 024 – 2
PAGE 6
ARI* capacities FAN COIL TYPE INDOOR UNIT OUTDOOR UNIT 40QNB024 38HDL018 40QNB024 38HDL024 40QAB024† 38HDL018 40QAB024† 38HDL024 40QAB036 38HDL030 Ceiling Suspended 40QAB036 38HDL036 40QAB048 38HDL048 40QAB060 38HDL060 40QKB024 38HDL018 40QKB036 38HDL024 In-Ceiling Cassette 40QKB036 38HDL030 40QKB036 38HDL036 *ARI — Air Conditioning and Refrigeration Institute. †The 024 size unit is condigured as a 018 size unit by changing the motor speed fan tap plug.
PAGE 7
Accessories (field installed) STANDARD FEATURES AND FIELD-INSTALLED ACCESSORIES STANDARD FEATURE/FIELD-INSTALLED 38HDL/40QNB 38HDL/40QAB 38HDL/40QKB ACCESSORY (High Wall) (Ceiling Suspended) (In-Ceiling Cassette) A A S Internal Condensate Pump S S S Mounting Brackets S — — Microprocessor Controls — S S 24-V Electro-Mechanical Controls S S S Cleanable Filters A — — Charcoal Filter Kit — A A Programmable Electronic Thermostat S S S 3-Speed Indoor-Fan Motor S S S Automatic Indoor-Fan Speed Control S S S Diagno
PAGE 8
Accessories (field installed) (cont) See Standard Features and Field-Installed Accessories table on page 7 for information on system features and accessories. 40QAB CONDENSATE PUMP The 40QAB ceiling-suspended condensate pump provides a maximum lift capability of 20 inches. The pump mounts inside the unit with quick plug-in connections, and is recommended when adequate drain line pitch cannot be provided.
PAGE 9
CHARCOAL FILTER KIT The charcoal (carbon) filter kit is available for duct-free high wall fan coil units. This accessory improves indoor air quality by removing volatile organic compounds (VOCs), odors, and micro-particles from the air. The filter kit can be installed either before or after the unit has been mounted to the wall. Filters must be changed approximately every three months.
PAGE 10
Accessories (field installed) (cont) Condensing units Field-fabricated accessories Low-ambient kit includes a solid-state head pressure controller designed to control condenser fan cycling, and is activated by a pressure sensor. It is specifically designed to control fan-motor cycles in response to saturated condensing pressure.
PAGE 11
Physical data — 38HDL condensing units UNIT 38HDL NOMINAL CAPACITY (Btuh) UNIT OPERATING WEIGHT (LB) COMPRESSOR Type Model Oil (oz) Initial/Recharge OUTDOOR FAN Rpm Diameter (in.)...No. of Blades Fan Pitch (Degrees) Motor Hp Nominal Airflow (Cfm) OUTDOOR COIL Face Area (sq ft)...No. of Rows Fins./in.
PAGE 12
Physical data — high wall units UNIT 40QNB 024 2 NOMINAL CAPACITY (Tons) 24,000 NOMINAL SIZE (Btuh) 42.9 OPERATING WEIGHT (lb) 6.3 MOISTURE REMOVAL RATE (Pints/Hr) White FINISH R-22 REFRIGERANT AccuRater® Metering Device Control (Cooling) 5.3 System Charge Required (lb)* Direct Drive Centrifugal INDOOR FAN 1470...570 Rpm...Cfm High 1370...466 Rpm...Cfm Medium 1270...417 Rpm...Cfm Low 49 Motor Watts 2...3.94 x 17.8 Blowers — No. ...Size (in.) Copper Tube, Aluminum Fin INDOOR COIL 2.56 Face Area (sq ft) 3 No.
PAGE 13
Physical data — ceiling-suspended units UNIT 40QAB NOMINAL CAPACITY (Tons) NOMINAL SIZE (Btuh) OPERATING WEIGHT (lb) MOISTURE REMOVAL RATE (Pints/Hr) FINISH REFRIGERANT Control (Cooling) System Charge Required (lb)† INDOOR FAN Rpm...Cfm High Rpm...Cfm Medium Rpm...Cfm Low High Speed Watts Quantity...Motor Hp Blowers — No. ...Size (in.) INDOOR COIL Face Area (sq ft) No. of Rows Fins/in. Circuits FILTERS (Quantity) Size (in.) 018* 11/2 18,000 108 5.8 024 036 048 2 3 4 24,000 36,000 48,000 108 117 149 7.1 9.
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Physical data — in-ceiling cassette units UNIT 40QKB 024 036 11/2 3 NOMINAL CAPACITY (Tons) 18,000 36,000 NOMINAL SIZE (Btuh) 61.6 105.8 OPERATING WEIGHT (lb) 7.0 9.6 MOISTURE REMOVAL RATE (Pints/Hr) Ceiling White FINISH R-22 REFRIGERANT AccuRater® Metering Device Control (Cooling) 4.8 6.0 System Charge Required (lb)* Direct Drive Centrifugal INDOOR FAN 1190...525 970...915 Rpm...Cfm High 930...415 790...745 Rpm...Cfm Medium 840...375 635...635 Rpm...
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UNIT SIZE 38HDL 018 024 030 036 048 060 mm 938.2 938.2 938.2 938.2 1131.9 1131.9 ft-in. 3-015/16 3-015/16 3-015/16 3-015/16 3-89/16 3-89/16 ft-in. 2-11/8 2-11/8 2-11/8 2-11/8 3-13/16 3-13/16 mm 638.2 638.2 638.2 638.2 944.6 944.6 B A ft-in. 1-29/16 1-29/16 1-29/16 1-29/16 1-51/16 1-51/16 C mm 369.9 369.9 369.9 369.9 433.4 433.4 ft-in. 1-4 1-4 1-4 1-4 1-67/16 1-67/16 D mm 406.4 406.4 406.4 406.4 468.3 468.3 ft-in. 1-117/16 1-117/16 1-117/16 1-117/16 2- 61/2 2- 61/2 E mm 595.3 595.3 595.3 595.
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Base unit dimensions — 40QNB024 high wall fan coil unit 1. Dimensions in ( ) are in millimeters. 2. Direction of airflow. 3. Refrigerant, drain, and power connections may be made in unit rear, bottom, left side, or right side. 4. Refrigerant is metered by AccuRater® device at the fan coil unit on 38HDL applications. 5. The 4″ top and left side clearances are absolute minimums. Clearances of 10″ are recommended. 16 UNIT 40QNB 024 WEIGHT — LB (KG) 42.9 (19.
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Directions of airflow. 3. Facing unit discharge, unit clearances are as follows: 0 in. on top and rear 3 in. on left side 12 in. on right side 36 in. on bottom 2. NOTES: 1. Dimensions in [ ] are millimeters. UNIT 40QAB 018,024 036 048 060 WEIGHT (lb) 108 117 149 179 A ft-in. 4- 215/16 4-1013/16 5-119/16 7- 8 mm 1294 1493 1817 2336 ft-in. 3-10 4- 57/8 5- 65/8 7- 3 B mm 1169 1368 1692 2211 ft-in. 4- 15/8 4- 91/2 5-101/4 7- 65/8 E mm 1260 1459 1783 2302 F ft-in.
PAGE 18
OPERATING WEIGHT Lb Kg 61.6 28 2. Dimensions in [ ] are in millimeters. 3. Service clearance is 2 ft on control box side, 0 in. all other sides. 4. Air discharge slots are adjustable; one or 2 may be closed to direct air in the desired direction. 5. Grille is shipped separately from unit. 6. Condensate pump has 20-in. lift capability. 7. AccuRater® device is a required field-installed accessory. NOTES: 1. indicates airflow.
PAGE 19
OPERATING WEIGHT Lb Kg 105.8 48 2. Dimensions in [ ] are in millimeters. 3.Service clearance is 2 ft on control box side, 0 in. all other sides. 4. Air discharge slots are adjustable; one or 2 may be closed to direct air in the desired direction. 5. Grille is shipped separately from unit. 6. Condensate pump has 20-in. lift capability. 7. AccuRater® device is a required field-installed accessory. NOTES: 1. indicates airflow.
PAGE 20
Selection procedure (with example) I Determine the type of fan coil which best suits the application (refer to Systems Index table on page 21). Duct-free split systems have 3 types of fan coils with overlapping capacities to choose from. Select the system type which best meets the job conditions. This example uses a 2-ton ceiling-suspended fan coil (assume wall space is not available for a wall-mounted unit). II Determine cooling load requirements at design conditions.
PAGE 21
Performance data SYSTEMS INDEX TABLE FAN COIL TYPE INDOOR SECTION OUTDOOR SECTION NET COOLING (Btuh)* 40QNB024 38HDL018 17,600 High Wall 40QNB024 38HDL024 22,600 40QAB024† 38HDL018 18,000 40QAB024 38HDL024 23,000 40QAB036 38HDL030 29,000 Ceiling Suspended 40QAB036 38HDL036 34,000 40QAB048 38HDL048 45,500 40QAB060 38HDL060 58,500 40QKB024 38HDL018 17,800 40QKB036 38HDL024 24,000 In-Ceiling Cassette 40QKB036 38HDL030 29,000 40QKB036 38HDL036 34,400 *Rating at 80 F db, 67 F wb air entering indoor section and
PAGE 22
Performance data (cont) COOLING CAPACITIES SYSTEM 1* — 38HDL018 WITH 40QNB024 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — 22 TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 456/0.04 57 17.3 17.3 17.2 1.10 0.937 40.1 38.8 16.8 14.9 16.6 1.23 1.06 41.4 39.5 16.
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COOLING CAPACITIES (cont) SYSTEM 2* — 38HDL024 WITH 40QNB024 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 456/0.04 57 21.4 20.2 21.3 1.24 1.09 34.9 34.4 20.7 19.8 20.5 1.40 1.25 35.9 35.4 19.8 19.3 19.7 1.55 1.40 37.
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Performance data (cont) COOLING CAPACITIES (cont) SYSTEM 3* — 38HDL018 WITH 40QAB024† TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — 24 TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 320/0.02 57 15.3 14.3 15.1 1.14 0.929 32.9 32.9 14.8 14.0 14.6 1.22 1.018 33.
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COOLING CAPACITIES (cont) SYSTEM 4* — 38HDL024 WITH 40QAB024 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 400/0.03 57 20.8 19.1 20.5 1.28 1.09 31.8 31.7 20.0 18.7 19.7 1.43 1.25 32.9 32.8 19.3 18.2 19.0 1.58 1.39 34.
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Performance data (cont) COOLING CAPACITIES (cont) SYSTEM 5* — 38HDL030 WITH 40QAB036 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — 26 TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 640/0.02 57 26.7 26.5 25.8 1.89 1.47 38.4 37.8 25.8 25.8 24.9 2.08 1.67 39.5 38.
PAGE 27
COOLING CAPACITIES (cont) SYSTEM 6* — 38HDL036 WITH 40QAB036 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 640/0.03 57 32.9 30.1 32.1 2.37 2.03 34.0 33.0 31.4 29.4 30.7 2.58 2.23 35.1 34.3 28.4 27.6 27.6 2.78 2.43 37.
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Performance data (cont) COOLING CAPACITIES (cont) SYSTEM 7* — 38HDL048 WITH 40QAB048 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — 28 TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 1100/0.05 57 44.9 44.9 43.6 3.01 2.33 38.9 38.2 43.5 43.5 42.2 3.35 2.67 40.2 38.
PAGE 29
COOLING CAPACITIES (cont) SYSTEM 8* — 38HDL060 WITH 40QAB060 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 1040/0.03 57 55.5 52.9 53.5 4.05 3.16 34.6 34.5 53.6 51.8 51.7 4.38 3.50 35.6 35.5 51.7 50.7 49.7 4.72 3.
PAGE 30
Performance data (cont) COOLING CAPACITIES (cont) SYSTEM 9* — 38HDL018 WITH 40QKB024 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — 30 TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 375/0.03 57 16.1 15.5 15.8 1.13 0.918 36.4 36.0 15.8 15.4 15.5 1.23 1.02 36.7 36.
PAGE 31
COOLING CAPACITIES (cont) SYSTEM 10* — 38HDL024 WITH 40QKB036 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 635/0.08 57 24.5 24.5 24.0 1.35 1.09 41.3 39.5 23.7 23.7 23.1 1.52 1.26 42.6 40.2 22.9 22.9 22.4 1.67 1.
PAGE 32
Performance data (cont) COOLING CAPACITIES (cont) SYSTEM 11* — 38HDL030 WITH 40QKB036 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — 32 TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 635/0.08 57 26.5 26.5 25.9 1.81 1.50 37.7 37.6 25.6 25.6 25.0 1.99 1.68 39.1 38.
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COOLING CAPACITIES (cont) SYSTEM 12* — 38HDL036 WITH 40QKB036 TEMP (F) AIR ENTERING CONDENSER (Edb) 55 65 75 85 95 105 115 125 BF — CMP — Edb — Ewb — kW — LDB — LWB — SHG — TC — TCG — TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB TCG SHG TC kW CMP LDB LWB 635/0.02 57 32.4 29.5 32.0 2.29 2.03 34.1 32.9 30.8 28.8 30.4 2.49 2.22 35.3 34.3 28.0 27.1 27.5 2.68 2.
PAGE 34
Performance data (cont) 38HDL CONDENSER-ONLY RATINGS SST (F) 30 35 40 45 50 55 30 35 40 45 50 55 55 65 TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW 17.8 78.8 1.07 19.6 79.8 1.08 21.5 81.1 1.08 23.5 82.7 1.09 25.7 84.4 1.10 27.9 86.2 1.10 16.9 88.3 1.18 18.7 89.4 1.19 20.6 90.7 1.19 22.6 92.1 1.20 24.7 93.8 1.21 26.9 95.6 1.22 TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW 23.8 80.4 1.37 26.2 82.1 1.37 28.7 84.0 1.38 31.3 86.2 1.39 34.1 88.5 1.41 37.0 91.1 1.
PAGE 35
38HDL CONDENSER-ONLY RATINGS (cont) SST (F) 30 35 40 45 50 55 30 35 40 45 50 55 30 35 40 45 50 55 TCG — SDT — kW — SST — 55 65 TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW 37.4 88.0 2.31 41.5 91.2 2.42 45.7 92.8 2.48 50.1 96.6 2.60 54.7 100.8 2.73 59.6 105.2 2.87 34.8 95.5 2.45 38.7 98.5 2.56 42.8 101.8 2.68 47.3 105.4 2.81 53.2 100.6 2.86 58.2 110.2 3.00 TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW TCG SDT kW 46.5 78.5 2.54 51.1 79.9 2.60 55.9 81.5 2.67 61.1 83.
PAGE 36
Electrical data 38HDL CONDENSING UNITS UNIT SIZE 38HDL 018 024 030 036 048 060 V-PH-Hz OPERATIONAL VOLTAGE* Min 208/230-1-60 187 COMPRESSOR Max RLA 254 10.7 13.2 15.7 16.4 24.3 28.6 LEGEND FLA — Full Load Amps HACR — Heating, Air Conditioning, Refrigeration LRA — Locked Rotor Amps MCA — Minimum Circuit Amps per NEC Section 430-24 NEC — National Electrical Code RLA — Rated Load Amps (Compressor) *Permissible limits of the voltage range at which unit will operate satisfactorily. †Time-delay fuse.
PAGE 37
Typical piping and wiring — high-wall systems 24,000 Btuh LEGEND National Electrical Code Piping Line Voltage 24 V Thermistor *Standard. †Field supplied. NEC — NOTES: 1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System Design Manual. 2. All wiring must comply with the applicable local and national codes. 3. Liquid line need not be insulated. 4. Wiring and piping shown are general points-of-connection guides only and are not intended for a specific installation. 5.
PAGE 38
Typical piping and wiring — ceiling-suspended systems LEGEND φ — Phase NEC — National Electrical Code Piping Line Voltage 24 V Thermistor *Standard. †Accessory item. **Field supplied. NOTES: 1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System Design Manual. 2. All wiring must comply with the applicable local and national codes. 3. Liquid line need not be insulated. 4. Wireless or wired remote controller accessory is required. 5.
PAGE 39
Typical piping and wiring — in-ceiling cassette systems LEGEND φ — Phase NEC — National Electrical Code Piping Line Voltage 24 V Thermistor *Standard. †Accessory item. **Field supplied. NOTES: 1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System Design Manual. 2. All wiring must comply with the applicable local and national codes. 3. Liquid line need not be insulated. 4.
PAGE 40
Application data Unit selection Select equipment to either match or be slightly less than anticipated peak load. This provides better humidity control, 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 anticipated load. Adjust for anticipated room wet bulb temperature to avoid undersizing equipment.
PAGE 41
Units equipped with accessory low-ambient kits should also be equipped with accessory wind baffle, crankcase heater, 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 start bypasses the low-pressure switch for 3 minutes.
PAGE 42
Application data (cont) PISTON GUIDE AND REFRIGERANT CHARGES SYSTEM TYPE INDOOR UNIT 40QNB024 40QNB024 40QAB024† 40QAB024 40QAB036 40QAB036 40QAB048 40QAB060 40QAE024† 40QAE024 40QAE036 40QAE036 40QAE048 40QAE060 40QKB024 40QKB036 40QKB036 40QKB036 40QKE024 40QKE036 40QKE036 40QKE048 High Wall Ceiling Suspended Ceiling Suspended With Electric Heat In-Ceiling Cassette In-Ceiling Cassette With Electric Heat OUTDOOR UNIT 38HDL018 38HDL024 38HDL018 38HDL024 38HDL030 38HDL036 38HDL048 38HDL060 38HDL018 38
PAGE 43
CHANGE IN INDOOR UNIT PISTON SIZE FOR ELEVATION OUTDOOR UNIT ABOVE INDOOR UNIT Ft Piston Change 0-25 0 26-50 –3 51-75 –5 INDOOR UNIT ABOVE OUTDOOR UNIT Ft Piston Change 0.25 0 26-65 +4 6. Additional charge — The unit should be charged by weighing in the appropriate charge. Add charge based on the 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 ft line to the charge listed Piston Guide and Refrigerant Charges table on page 42.
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Application data (cont) STATIC CAPABILITY AND DESIGN CONSIDERATIONS, CASSETTE SYSTEMS ONE DIFFUSER CLOSED TWO DIFFUSERS CLOSED Sound data CONDENSING UNIT SOUND RATINGS UNIT 38HDL024 38HDL030 38HDL036 38HDL048 38HDL060 44 SOUND RATING (Decibels) 68 64 71 72 71 FREE FIELD dBA* 58.0 54.0 61.0 62.0 61.0 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.
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SOUND POWER DATA OCTAVE BANDS — A WEIGHTED UNIT 38HDL018 38HDL024 38HDL030 38HDL036 38HDL048 38HDL060 40QNB024 40QAB018 40QAB024 40QAB036 40QAB048 40QAB060 40QKB024 40QKB036 ARI dBA H L M — — — — — FAN SPEED H H H H H H H M L H M L H M L H M L H M L H M L H M L H M L 125 48.9 48.9 46.4 62.9 61.9 60.9 44.9 43.7 40.7 38.1 36.4 35.1 39.2 38.1 36.4 50.2 47.9 46.2 48.7 47.8 NA 52.5 51.2 49.5 32.1 NA NA 45.0 35.5 31.2 250 51.4 48.9 49.9 62.9 57.4 55.9 51.9 50.5 47.7 50.0 47.7 46.2 50.9 50.0 47.7 61.
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— — — — — — — — — — — — — — — — — — — AGING C CAP CH COMP CN EMI EQUIP.
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Typical wiring schematic — 38HDL018-036 with 40QKB024,036 cooling only in-ceiling cassette system NOTES: 1. If any of the original wire furnished must be replaced, it must be replaced with Type 90° C wire or its equivalent. 2. Wire in accordance with National Electrical Code (NEC) and local codes. 3. Transformer is thermally protected and will reset automatically. 4. IFM(S), OFM and COMP have internal thermal protection. 5. Heating contactor energizes electric heater in fan coil.
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Typical wiring schematic — 38HDL024-060 with 40QAB024-060 cooling only ceiling suspended system NOTES: 1. If any of the original wire furnished must be replaced, it must be replaced with Type 90° C wire or its equivalent. 2. Wire in accordance with National Electrical Code (NEC) and local codes. 3. Transformer is thermally protected and will reset automatically. 4. IFM(S), OFM and COMP have internal thermal protection. 48 LEGEND ASM ASR C CAP CH CKT BD COMP CR DR EQUIP.
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Controls — systems using high-wall fan coils (40QNB) WIRELESS CONTROLLER Control system — The 40QNB unit is equipped with a microprocessor control which operates the system. This control is located in the control box of the fan coil unit, with thermistors located in the fan coil inlet and on the indoor coil. These thermistors monitor system operation and control the operating mode. To change settings or modes of operation, use the factory-supplied infrared wireless remote controller (see above).
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Controls — systems using high-wall fan coils (40QNB) (cont) 2. If the room temperature is below the selected temperature, the unit operates for 8 minutes as follows: The compressor and outdoor fan will operate for 3 minutes. The indoor fan will operate at low speed, and 30 seconds after the compressor stops, the indoor fan stops. The unit remains off for 1 minute, and then the indoor fan starts at ultra-low speed for 30 seconds. The unit then switches to normal dehumidification operation.
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Controls — systems using ceiling-suspended (40QAB) or cassette (40QKB) fan coils REMOTE THERMOSTAT Mode Air Sweep Fan Day/Night Operating mode memory After the system is turned off or after a power failure, the system remains in the last operating mode selected. When the system is turned back on, or when power is automatically restored, operation continues in the same operating mode as when the system shut down.
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Guide specifications — outdoor units Commercial Condensing Units HVAC Guide Specifications Size Range: 11/2 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, wall hung, balcony, or under-deck installation. Unit shall consist of a scroll or reciprocating compressor, an air-cooled coil, propeller-type blow-thru outdoor fans, full refrigerant charge, and control box.
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G. Controls and Safeties: Operating controls and safeties shall be factory selected, assembled, and tested. The minimum control functions shall include the following: 1. Controls: a. Automatic restart on power failure. b. A time delay control sequence provided through the fan coil board, thermostat, or controller. c. Liquid line low-pressure switches. d. Automatic outdoor-fan motor protection. e. Start capacitor and relay (single-phase units without scroll compressors). 2. Safeties: a.
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Guide specifications — high-wall units 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 DESCRIPTION Indoor, wall-mounted, direct-expansion fan coil to be matched with the commercial condensing units. 1.02 QUALITY ASSURANCE Unit shall be rated per ARI Standards 210/240 and listed in the ARI directory as a matched system. 1.
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G. Filters: Unit shall have filter track with factory-supplied cleanable filters. H. Electrical Requirements: Unit shall operate on 208 v or 230 v, 60 Hz power supply as specified on the equipment schedule. Power and control connections shall have terminal block connections. I. Operating Characteristics: 1. The unit shall be matched with an outdoor unit.
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Guide specifications — 40QAB ceiling-suspended units Commercial Ceiling-Suspended Fan Coils HVAC Guide Specifications Size Range: 11/2 to 5 Tons Cooling Capacity Carrier Model Number: 40QAB Part 1 — General 1.01 SYSTEM DESCRIPTION Indoor, under-ceiling mounted, direct-expansion fan coil to be matched with the 38HDL commercial condensing unit. 1.02 QUALITY ASSURANCE Units shall be rated (when matched with appropriate outdoor unit) per ARI Standard 210/240. Units shall be certified by UL and CSA. 1.
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J. Special Features (Field Installed): Certain features are not applicable when the features designated by * are specified. For assistance in amending the specifications, contact your local Carrier Sales Office. * 1. Internal Condensate Pump: The condensate pump shall remove condensate from the pan when gravity cannot be used. The lift capability shall be 20 inches. Float control shall be in the condensate sump to shut unit down in case of pump malfunction. 2.
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Guide specifications — 40QKB in-ceiling cassette units Commercial In-Ceiling Cassette Fan Coil HVAC Guide Specifications Size Range: 11/2 to 3 Tons Cooling Capacity Carrier Model Number: 40QKB Part 1 — General 1.01 SYSTEM DESCRIPTION Indoor, in-the-ceiling-mounted, direct-expansion fan coil to be matched with the 38HDL commercial condensing unit. Units shall fit standard 2 ft x 4 ft ceiling grid. 1.
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Carrier Corporation • Syracuse, New York 13221 8-99 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Pg 60 Catalog No. 523-738 Printed in U.S.A.