York HVAC Systems: Technical Guide for Contractors
This comprehensive technical guide is designed for HVAC professionals, offering in-depth insights into York HVAC systems. It covers critical aspects such as model lines, technical specifications, common failure modes, and parts compatibility, with a particular focus on the JHC Series air handlers. Our aim is to provide contractors with accurate, practical, and deeply technical information to enhance their diagnostic, installation, and maintenance capabilities when working with York equipment.
I. York JHC Series Air Handlers: Technical Overview
The York JHC Series represents a line of premium variable speed ECM single-piece multi-position air handlers, engineered for flexibility and high performance in various residential and light commercial applications. These units are designed to accommodate upflow, downflow, horizontal right, or horizontal left installations, making them suitable for diverse environments such as closets, utility rooms, attics, crawl spaces, or basements. They are versatile, supporting both cooling and heat pump operations, with or without electric heat [1].
A. Description and Features
Key features of the JHC Series air handlers emphasize durability, efficiency, and ease of service. They incorporate MaxAlloy™ coils, constructed from long-life aluminum to ensure lasting performance and reliability. The units also feature a next-generation even-flow distributor for balanced refrigerant flow and consistent coil circuit performance. A high-efficiency blower, powered by a variable speed ECM motor, delivers increased airflow while reducing blower watts by 10%. The variable speed operation offers application flexibility and upgraded system efficiency. Furthermore, next-generation insulation and gasket designs minimize thermal transmission paths and reduce sweating. For added convenience, 8HK field-installed electric heat kits are available, and the units support two-stage operation, compatible with single-stage and two-stage outdoor equipment. A factory-installed R-454B refrigerant detection sensor ensures compliance with modern refrigerant standards [1].
B. Model Nomenclature and Interpretation
Understanding York\"s model nomenclature is crucial for identifying specific unit configurations and capabilities. The JHC Series nomenclature follows a structured format, where each position or group of characters denotes a particular feature. For example, a model number like JHC18B5AB2SS1A can be broken down to reveal details such as product type, motor type, nominal capacity, cabinet width, refrigerant type, metering device, voltage, and control strategy [1].
Table 1: JHC Series Model Nomenclature Description
| Number | Category | Option | Description |
|---|---|---|---|
| 1 | Product type | J | Air handler |
| 2 | Air handler type | H | One piece |
| S | Shorter cabinet | ||
| 3 | Motor type | E | Constant torque |
| C | Constant CFM | ||
| V | Variable speed ECM | ||
| 4, 5 | Nominal capacity | 18 | 1.5 ton |
| 24 | 2.0 ton | ||
| 30 | 2.5 ton | ||
| 36 | 3.0 ton | ||
| 42 | 3.5 ton | ||
| 48 | 4.0 ton | ||
| 60 | 5.0 ton | ||
| 6 | Cabinet width | A | 14.5 in. |
| B | 17.5 in. | ||
| C | 21.0 in. | ||
| D | 24.5 in. | ||
| E | 19.6 in. | ||
| F | 22.0 in. | ||
| 7 | Refrigerant | 5 | R-454B |
| 8 | Metering device | A-W | TXV |
| 1-9 | EEV | ||
| X | No valve | ||
| 9 | Slab Size | A | 2R-14-18 |
| B | 2R-16-18 | ||
| C | 2R-20-18 | ||
| D | 3R-20-14 | ||
| E | 3R-22-14 | ||
| F | 3R-24-12 | ||
| G | 3R-28-12 | ||
| H | 3R-32-12 | ||
| J | 4R-28-12 | ||
| 10 | Voltage (voltage-phase-hertz) | 2 | 208/230-1-60 |
| 3 | 208/230-3-60 | ||
| 4 | 460-3-60 | ||
| 11 | Control strategy | C | Communicating |
| B | Wireless (communicating) | ||
| S | Standard (conventional) | ||
| W | Wireless (conventional) | ||
| 12 | Accessories | S | A2L sensor |
| N | None (no sensor) | ||
| 13 | Generation (major revision) | 1 | First generation |
| 2 | Second generation | ||
| 3 | Third generation | ||
| 4 | Fourth generation | ||
| 14 | Style letter (minor revision) | A | Style A |
| B | Style B | ||
| C | Style C | ||
| D | Style D |
C. Dimensions and Physical Data
Accurate dimensions are essential for proper installation and space planning. The JHC Series air handlers come in various sizes, with specific measurements for height, width, and duct connections. These physical attributes, along with wiring knockouts and refrigerant line sizes, dictate installation requirements and compatibility with existing ductwork and utility connections [1].
Table 2: JHC Series Dimensions
| Model | Height (in.) | Width (in.) | Opening (in.) | Wiring knockouts Power (in.) | Wiring knockouts Control (in.) | Refrigerant connections Liquid (in.) | Refrigerant connections Vapor (in.) |
|---|---|---|---|---|---|---|---|
| JHC18B5AB2SS1 | 45 5/8 | 17 1/2 | 7 1/2 | 7/8 (1/2) | 7/8 (1/2) | 3/8 | 3/4 |
| JHC24B5AC2SS1 | 48 3/8 | 17 1/2 | 10 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 3/4 |
| JHC36B5AD2SS1 | 48 3/8 | 17 1/2 | 10 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC36C5AD2SS1 | 49 5/8 | 21 | 11 1/2 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC42C5AF2SS1 | 55 5/8 | 21 | 17 1/2 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC42D5AF2SS1 | 55 1/2 | 24 1/2 | 17 1/4 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC48C5CG2SS1 | 60 | 21 | 21 3/4 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC48D5CG2SS1 | 60 | 24 1/2 | 21 3/4 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC60C5CH2SS1 | 61 6/8 | 21 | 23 1/2 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC60D5CH2SS1 | 61 6/8 | 24 1/2 | 23 1/2 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
| JHC60D5CJ2SS1 | 60 | 24 1/2 | 21 3/4 | 1 23/32 (1 1/4) | 1 23/32 (1 1/4) | 3/8 | 7/8 |
D. Coil Technical Data
The performance of an air handler is significantly influenced by its coil design. York JHC Series coils are optimized for efficient heat transfer. Key technical data includes the coil\"s face area, number of rows deep, fins per inch, coil size, tube geometry, tube diameter, and fin type. These specifications are critical for contractors when assessing the unit\"s capacity and compatibility with various refrigerants and system designs [1].
Table 3: JHC Series Coil Technical Data
| Model | Application | Refrigerant connection types | Face area (sq. ft.) | Rows deep | Fins per in. | Coil size | Tube geometry | Tube diameter | Fin type |
|---|---|---|---|---|---|---|---|---|---|
| JHC18B5AB2SS1 | Cooling /Heat pump | Sweat | 3.8 | 2 | 18 (2) | 16 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC24B5AC2SS1 | Cooling /Heat pump | Sweat | 4.7 | 2 | 18 (2) | 20 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC36B5AD2SS1 | Cooling /Heat pump | Sweat | 4.7 | 3 | 14 (2) | 20 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC36C5AD2SS1 | Cooling /Heat pump | Sweat | 4.7 | 3 | 14 (2) | 20 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC42C5AF2SS1 | Cooling /Heat pump | Sweat | 5.7 | 3 | 12 (2) | 24 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC42D5AF2SS1 | Cooling /Heat pump | Sweat | 5.7 | 3 | 12 (2) | 24 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC48C5CG2SS1 | Cooling /Heat pump | Sweat | 6.6 | 3 | 12 (2) | 28 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC48D5CG2SS1 | Cooling /Heat pump | Sweat | 6.6 | 3 | 12 (2) | 28 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC60C5CH2SS1 | Cooling /Heat pump | Sweat | 7.6 | 3 | 12 (2) | 32 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC60D5CH2SS1 | Cooling /Heat pump | Sweat | 7.6 | 3 | 12 (2) | 32 x 17 | 1 x 0.675 | 3/8 | Lanced |
| JHC60D5CJ2SS1 | Cooling /Heat pump | Sweat | 6.6 | 4 | 12 (2) | 28 x 17 | 1 x 0.675 | 3/8 | Lanced |
E. Cooling Capacity Data
Cooling capacity is a primary performance metric for any HVAC system. For the JHC Series, cooling capacity is detailed across various models, indicating rated CFM, entering air dry bulb/wet bulb temperatures, and corresponding R-454B evaporation temperatures and pressures. This data is crucial for contractors to select the appropriate unit for specific cooling loads and to ensure optimal system performance [1].
Table 4: JHC Series Cooling Capacity (MBH)
| Model | Rated CFM | Entering air dry bulb/wet bulb (°F) | 35/107.9 (°F/psig) | 40/118.9 (°F/psig) | 45/130.7 (°F/psig) | 50/143.3 (°F/psig) |
|---|---|---|---|---|---|---|
| JHC18B5*B | 600 | 85/72 | 56.0 | 50.0 | 43.3 | 35.9 |
| 80/67 | 45.5 | 39.5 | 32.6 | 25.2 | ||
| 75/62 | 36.0 | 29.8 | 23.0 | 15.4 | ||
| 70/57 | 27.3 | 21.0 | 14.8 | 11.4 | ||
| JHC24B5*C | 800 | 85/72 | 66.1 | 60.1 | 52.9 | 44.6 |
| 80/67 | 54.6 | 48.2 | 40.2 | 31.9 | ||
| 75/62 | 43.9 | 36.9 | 29.1 | 19.0 | ||
| 70/57 | 33.8 | 26.6 | 19.0 | 14.8 | ||
| JHC36B5*D | 1200 | 85/72 | 86.0 | 77.6 | 68.0 | 57.1 |
| 80/67 | 70.6 | 61.7 | 52.0 | 40.7 | ||
| 75/62 | 56.4 | 47.2 | 37.2 | 24.7 | ||
| 70/57 | 43.1 | 33.8 | 23.9 | 18.6 | ||
| JHC36C5*D | 1200 | 85/72 | 86.0 | 77.6 | 68.0 | 57.1 |
| 80/67 | 70.6 | 61.7 | 52.0 | 40.7 | ||
| 75/62 | 56.4 | 47.2 | 37.2 | 24.7 | ||
| 70/57 | 43.1 | 33.8 | 23.9 | 18.6 | ||
| JHC42C5*F | 1400 | 85/72 | 95.4 | 86.1 | 75.5 | 63.0 |
| 80/67 | 78.5 | 68.7 | 57.7 | 45.0 | ||
| 75/62 | 62.9 | 44.6 | 41.5 | 27.7 | ||
| 70/57 | 48.4 | 38.1 | 27.5 | 21.0 | ||
| JHC42D5*F | 1600 | 85/72 | 95.4 | 86.1 | 75.5 | 63.0 |
| 80/67 | 78.5 | 68.7 | 57.7 | 45.0 | ||
| 75/62 | 62.9 | 44.6 | 41.5 | 27.7 | ||
| 70/57 | 48.4 | 38.1 | 27.5 | 21.0 | ||
| JHC48C5*G | 1600 | 85/72 | 115.6 | 104.2 | 91.0 | 76.2 |
| 80/67 | 94.9 | 82.8 | 67.4 | 54.3 | ||
| 75/62 | 75.6 | 63.1 | 49.4 | 33.6 | ||
| 70/57 | 57.9 | 45.1 | 32.1 | 24.8 | ||
| JHC48D5*G | 1600 | 85/72 | 115.6 | 104.2 | 91.0 | 76.2 |
| 80/67 | 94.9 | 82.8 | 67.4 | 54.3 | ||
| 75/62 | 75.6 | 63.1 | 49.4 | 33.6 | ||
| 70/57 | 57.9 | 45.1 | 32.1 | 24.8 | ||
| JHC60C5*H | 1800 | 85/72 | 113.0 | 102.6 | 90.1 | 75.7 |
| 80/67 | 93.2 | 82.1 | 68.8 | 54.3 | ||
| 75/62 | 74.7 | 62.9 | 49.4 | 33.4 | ||
| 70/57 | 57.5 | 45.1 | 32.2 | 25.1 | ||
| JHC60D5*H | 1800 | 85/72 | 113.0 | 102.6 | 90.1 | 75.7 |
| 80/67 | 93.2 | 82.1 | 68.8 | 54.3 | ||
| 75/62 | 74.7 | 62.9 | 49.4 | 33.4 | ||
| 70/57 | 57.5 | 45.1 | 32.2 | 25.1 | ||
| JHC60D5*J | 1800 | 85/72 | 111.3 | 100.0 | 87.1 | 72.3 |
| 80/67 | 91.5 | 79.6 | 66.3 | 51.3 | ||
| 75/62 | 73.1 | 60.9 | 46.9 | 32.6 | ||
| 70/57 | 56.1 | 43.0 | 32.5 | 25.0 |
Note: Actual capacity varies with the outdoor air conditioning unit or heat pump used with the system. Airflow is calculated for each system tonnage [1].
F. Electrical Data (Single-phase and Multi-phase)
Electrical data is paramount for safe and compliant installation. This includes physical and electrical data for cooling-only models, such as blower motor horsepower, nominal RPM, voltage, and full load amps. Furthermore, detailed electrical data for single-source and multi-source power supplies (208/230-1-60 and 208/230-3-60) is provided, covering heater amps, minimum circuit ampacity (MCA), and maximum overcurrent protection (MOP) [1].
Table 5: JHC Series Physical and Electrical Data - Cooling Only
| Model | Blower - diameter x width | Motor HP | Nominal RPM | Voltage | Full load amps at 230 V | Filter Type | Filter Size | Shipping / Operating weight (lb) |
|---|---|---|---|---|---|---|---|---|
| JHC18B5*B | 11 x 8 | 1/3 HP | 1050 | 208/230 | 2.6 | Disposable or cleanable | 16 x 20 x 1 | 98 / 90 |
| JHC24B5*C | 11 x 8 | 1/3 HP | 1050 | 208/230 | 2.6 | Disposable or cleanable | 16 x 20 x 1 | 104 / 96 |
| JHC36B5*D | 11 x 8 | 1/2 HP | 1050 | 208/230 | 3.8 | Disposable or cleanable | 16 x 20 x 1 | 105 / 97 |
| JHC36C5*D | 11 x 10 | 1/2 HP | 1050 | 208/230 | 3.8 | Disposable or cleanable | 20 x 20 x 1 | 121 / 111 |
| JHC42C5*F | 11 x 10 | 3/4 HP | 1050 | 208/230 | 5.4 | Disposable or cleanable | 20 x 20 x 1 | 132 / 122 |
| JHC42D5*F | 11 x 11 | 3/4 HP | 1050 | 208/230 | 5.4 | Disposable or cleanable | 23 x 20 x 1 | 142 / 131 |
| JHC48C5*G | 11 x 10 | 1 HP | 1050 | 208/230 | 7.0 | Disposable or cleanable | 20 x 20 x 1 | 140 / 129 |
| JHC48D5*G | 11 x 11 | 3/4 HP | 1050 | 208/230 | 5.4 | Disposable or cleanable | 23 x 20 x 1 | 152 / 140 |
| JHC60C5*H | 11 x 10 | 1 HP | 1050 | 208/230 | 7.0 | Disposable or cleanable | 20 x 20 x 1 | 153 / 141 |
| JHC60D5*H | 11 x 11 | 3/4 HP | 1050 | 208/230 | 5.4 | Disposable or cleanable | 23 x 20 x 1 | 158 / 146 |
| JHC60D5*J | 11 x 11 | 1 HP | 1050 | 208/230 | 7.0 | Disposable or cleanable | 23 x 20 x 1 | 162 / 150 |
Note: The filter is field supplied [1].
Table 6: JHC Series Electrical Data - Cooling Only
| Model | Motor FLA* | Minimum circuit ampacity | MOP (A) |
|---|---|---|---|
| JHC18B5*B/JHC24B5*C | 2.6 | 3.3 | 15 |
| JHC36B5*D/JHC36C5*D | 3.8 | 4.8 | 15 |
| JHC42C5*F/JHC42D5*F/JHC48D5*G/JHC60D5*H | 5.4 | 6.8 | 15 |
| JHC48C5*G/JHC60C5*H/JHC60D5*J | 7 | 8.8 | 15 |
*FLA = Full load amps. MOP = Maximum overcurrent protection device; must be a HACR type circuit breaker or a time delay fuse. Refer to the latest edition of the National Electric Code, or, in Canada, the Canadian electrical Code and local codes to determine correct wire sizing [1].
Table 7: Electrical Data for Single-Source Power Supply: 208/230-1-60
| Air handler model | Electric heat kit model | Heater amps (A) at 240 V | Minimum circuit ampacity (A) 208 V | Minimum circuit ampacity (A) 230 V | MOP (A) 208 V | MOP (A) 230 V |
|---|---|---|---|---|---|---|
| JHC18B5*B | 8HK(0,1)6500206 | 10 | 14.1 | 15.2 | 15 | 20 |
| 8HK(0,1)6500506 | 20 | 24.9 | 27.2 | 25 | 30 | |
| 8HK(0,1)6500806 | 32 | 38.1 | 41.8 | 40 | 45 | |
| 8HK(0,1)6501006 | 40 | 46.5 | 51.1 | 50 | 60 | |
| JHC24B5*C | 8HK(0,1)6500206 | 10 | 14.1 | 15.2 | 15 | 20 |
| 8HK(0,1)6500506 | 20 | 24.9 | 27.2 | 25 | 30 | |
| 8HK(0,1)6500806 | 32 | 38.1 | 41.8 | 40 | 45 | |
| 8HK(0,1)6501006 | 40 | 46.5 | 51.1 | 50 | 60 | |
| 8HK(1,2)6501506 | 60 | 68.2 | 75.0 | 70 | 80 | |
| JHC36B5*D | 8HK(0,1)6500206 | 10 | 15.6 | 16.7 | 20 | 20 |
| 8HK(0,1)6500506 | 20 | 26.4 | 28.7 | 30 | 30 | |
| 8HK(0,1)6500806 | 32 | 39.6 | 43.3 | 40 | 45 | |
| 8HK(0,1)6501006 | 40 | 48.0 | 52.6 | 50 | 60 | |
| 8HK(1,2)6501506 | 60 | 69.7 | 76.5 | 70 | 80 | |
| 8HK(1,2)6502006 | 80 | 91.3 | 100.4 | 100 | 110 | |
| JHC36C5*D | 8HK(0,1)6500206 | 10 | 15.6 | 16.7 | 20 | 20 |
| 8HK(0,1)6500506 | 20 | 26.4 | 28.7 | 30 | 30 | |
| 8HK(0,1)6500806 | 32 | 39.6 | 43.3 | 40 | 45 | |
| 8HK(0,1)6501006 | 40 | 48.0 | 52.6 | 50 | 60 | |
| 8HK(1,2)6501506 | 60 | 69.7 | 76.5 | 70 | 80 | |
| 8HK(1,2)6502006 | 80 | 91.3 | 100.4 | 100 | 110 | |
| JHC42C5*F | 8HK(0,1)6500206 | 10 | 17.6 | 18.7 | 20 | 20 |
| 8HK(0,1)6500506 | 20 | 28.4 | 30.7 | 30 | 35 | |
| 8HK(0,1)6500806 | 32 | 41.6 | 45.3 | 45 | 50 | |
| 8HK(0,1)6501006 | 40 | 50.0 | 54.6 | 60 | 60 | |
| 8HK(1,2)6501506 | 60 | 71.7 | 78.5 | 80 | 80 | |
| 8HK(1,2)6502006 | 80 | 93.3 | 102.4 | 100 | 110 | |
| JHC42D5*F | 8HK(0,1)6500206 | 10 | 17.6 | 18.7 | 20 | 20 |
| 8HK(0,1)6500506 | 20 | 28.4 | 30.7 | 30 | 35 | |
| 8HK(0,1)6500806 | 32 | 41.6 | 45.3 | 45 | 50 | |
| 8HK(0,1)6501006 | 40 | 50.0 | 54.6 | 60 | 60 | |
| 8HK(1,2)6501506 | 60 | 71.7 | 78.5 | 80 | 80 | |
| 8HK(1,2)6502006 | 80 | 93.3 | 102.4 | 100 | 110 | |
| JHC48C5*G | 8HK(0,1)6500206 | 10 | 19.6 | 20.7 | 20 | 25 |
| 8HK(0,1)6500506 | 20 | 30.4 | 32.7 | 35 | 35 | |
| 8HK(0,1)6500806 | 32 | 43.6 | 47.3 | 45 | 50 | |
| 8HK(0,1)6501006 | 40 | 52.0 | 56.6 | 60 | 60 | |
| 8HK(1,2)6501506 | 60 | 73.7 | 80.5 | 80 | 90 | |
| 8HK(1,2)6502006 | 80 | 95.3 | 104.4 | 100 | 110 | |
| JHC48D5*G | 8HK(0,1)6500206 | 10 | 17.6 | 18.7 | 20 | 20 |
| 8HK(0,1)6500506 | 20 | 28.4 | 30.7 | 30 | 35 | |
| 8HK(0,1)6500806 | 32 | 41.6 | 45.3 | 45 | 50 | |
| 8HK(0,1)6501006 | 40 | 50.0 | 54.6 | 60 | 60 | |
| 8HK(1,2)6501506 | 60 | 71.7 | 78.5 | 80 | 80 | |
| 8HK(1,2)6502006 | 80 | 93.3 | 102.4 | 100 | 110 | |
| 8HK(1,2)6502506 | 100 | 114.9 | 126.3 | 125 | 150 | |
| JHC60C5*H | 8HK(0,1)6500206 | 10 | 19.6 | 20.7 | 20 | 25 |
| 8HK(0,1)6500506 | 20 | 30.4 | 32.7 | 35 | 35 | |
| 8HK(0,1)6500806 | 32 | 43.6 | 47.3 | 45 | 50 | |
| 8HK(0,1)6501006 | 40 | 50.0 | 54.6 | 60 | 60 | |
| 8HK(1,2)6501506 | 60 | 73.7 | 80.5 | 80 | 90 | |
| 8HK(1,2)6502006 | 80 | 95.3 | 104.4 | 100 | 110 | |
| JHC60D5*H | 8HK(0,1)6500206 | 10 | 17.6 | 18.7 | 20 | 20 |
| 8HK(0,1)6500506 | 20 | 28.4 | 30.7 | 30 | 35 | |
| 8HK(0,1)6500806 | 32 | 41.6 | 45.3 | 45 | 50 | |
| 8HK(0,1)6501006 | 40 | 50.0 | 54.6 | 60 | 60 | |
| 8HK(1,2)6501506 | 60 | 71.7 | 78.5 | 80 | 80 | |
| 8HK(1,2)6502006 | 80 | 93.3 | 102.4 | 100 | 110 | |
| 8HK(1,2)6502506 | 100 | 114.9 | 126.3 | 125 | 150 | |
| JHC60D5*J | 8HK(0,1)6500206 | 10 | 19.6 | 20.7 | 20 | 25 |
| 8HK(0,1)6500506 | 20 | 30.4 | 32.7 | 35 | 35 | |
| 8HK(0,1)6500806 | 32 | 43.6 | 47.3 | 45 | 50 | |
| 8HK(0,1)6501006 | 40 | 50.0 | 54.6 | 60 | 60 | |
| 8HK(1,2)6501506 | 60 | 73.7 | 80.5 | 80 | 90 | |
| 8HK(1,2)6502006 | 80 | 95.3 | 104.4 | 100 | 110 | |
| 8HK(1,2)6502506 | 100 | 116.9 | 128.3 | 125 | 150 |
Note: For electric heat kit model numbers in this table that include (0,1), 0 indicates no service disconnect or 1 indicates with service disconnect. For electric heat kit model numbers that include (1,2) - 1 indicates with service disconnect and no breaker jumper bar or 2 indicates with service disconnect and breaker jumper bar. MOP = Maximum overcurrent protection device; must be HACR type circuit breaker or a time delay fuse. Refer to the latest edition of the National Electric Code or in Canada the Canadian electrical Code and local codes to determine correct wire sizing [1].
Table 8: Electrical Data for Multi-Source Power Supply: 208/230-1-60
| Air handler model | Electric heat kit model | Heater amps (A) at 240 V | Minimum circuit ampacity (A) 208 V | Minimum circuit ampacity (A) 230 V | MOP (A) 208 V | MOP (A) 230 V | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| First Circuit | Second Circuit | Third Circuit | First Circuit | Second Circuit | Third Circuit | First Circuit | Second Circuit | Third Circuit | First Circuit | Second Circuit | Third Circuit | |||
| JHC24B5*C | 8HK16501506 | 60 | 24.7 | 43.5 | — | 26.9 | 48.1 | — | 25 | 45 | — | 30 | 50 | — |
| JHC36B5*D | 8HK16501506 | 60 | 26.2 | 43.5 | — | 28.4 | 48.1 | — | 30 | 45 | — | 30 | 50 | — |
| 8HK16502006 | 80 | 48.0 | 43.3 | — | 52.6 | 47.8 | — | 50 | 45 | — | 60 | 50 | — | |
| JHC36C5*D | 8HK16501506 | 60 | 26.2 | 43.5 | — | 28.4 | 48.1 | — | 30 | 45 | — | 30 | 50 | — |
| 8HK16502006 | 80 | 48.0 | 43.3 | — | 52.6 | 47.8 | — | 50 | 45 | — | 60 | 50 | — | |
| JHC42C5*F | 8HK16501506 | 60 | 28.2 | 43.5 | — | 30.4 | 48.1 | — | 30 | 45 | — | 35 | 50 | — |
| 8HK16502006 | 80 | 50.0 | 43.3 | — | 54.6 | 47.8 | — | 60 | 45 | — | 60 | 50 | — | |
| JHC42D5*F | 8HK16501506 | 60 | 28.2 | 43.5 | — | 30.4 | 48.1 | — | 30 | 45 | — | 35 | 50 | — |
| 8HK16502006 | 80 | 50.0 | 43.3 | — | 54.6 | 47.8 | — | 60 | 45 | — | 60 | 50 | — | |
| JHC48C5*G | 8HK16501506 | 60 | 30.2 | 43.5 | — | 32.4 | 48.1 | — | 35 | 45 | — | 35 | 50 | — |
| 8HK16502006 | 80 | 52.0 | 43.3 | — | 56.6 | 47.8 | — | 60 | 45 | — | 60 | 50 | — | |
| JHC48D5*G | 8HK16501506 | 60 | 28.2 | 43.5 | — | 30.4 | 48.1 | — | 30 | 45 | — | 35 | 50 | — |
| 8HK16502006 | 80 | 50.0 | 43.3 | — | 54.6 | 47.8 | — | 50 | 45 | — | 60 | 50 | — | |
| 8HK16502506 | 100 | 50.0 | 43.3 | 21.6 | 54.6 | 47.8 | 23.9 | 60 | 45 | 25 | 60 | 50 | 25 | |
| JHC60C5*H | 8HK16501506 | 60 | 30.2 | 43.5 | — | 32.4 | 48.1 | — | 35 | 45 | — | 35 | 50 | — |
| 8HK16502006 | 80 | 52.0 | 43.3 | — | 56.6 | 47.8 | — | 60 | 45 | — | 60 | 50 | — | |
| JHC60D5*H | 8HK16501506 | 60 | 28.2 | 43.5 | — | 30.4 | 48.1 | — | 30 | 45 | — | 35 | 50 | — |
| 8HK16502006 | 80 | 50.0 | 43.3 | — | 54.6 | 47.8 | — | 60 | 45 | — | 60 | 50 | — | |
| 8HK16502506 | 100 | 50.0 | 43.3 | 21.6 | 54.6 | 47.8 | 23.9 | 60 | 45 | 25 | 60 | 50 | 25 | |
| JHC60D5*J | 8HK16501506 | 60 | 30.2 | 43.5 | — | 32.4 | 48.1 | — | 35 | 45 | — | 35 | 50 | — |
| 8HK16502006 | 80 | 52.0 | 43.3 | — | 56.6 | 47.8 | — | 60 | 45 | — | 60 | 50 | — | |
| 8HK16502506 | 100 | 52.0 | 43.3 | 21.6 | 56.6 | 47.8 | 23.9 | 60 | 45 | 25 | 60 | 50 | 25 | |
Note: MOP = Maximum overcurrent protection device; must be HACR type circuit breaker or time delay fuse. Refer to the latest edition of the National Electric Code or in Canada the Canadian electrical Code and local codes to determine correct wire sizing [1].
Table 9: Electrical Data for Multi-Source Power Supply: 208/230-3-60
| Air handler model | Electric heat kit model | Heater amps (A) at 240 V | Minimum circuit ampacity (A) 208 V | Minimum circuit ampacity (A) 230 V | MOP (A) 208 V | MOP (A) 230 V | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| First Circuit | Second Circuit | First Circuit | Second Circuit | First Circuit | Second Circuit | First Circuit | Second Circuit | |||
| JHC36B5*D | 8HK16502025 | 46.2 | 29.7 | 25.0 | 32.4 | 27.6 | 30 | 25 | 35 | 30 |
| JHC36C5*D | 8HK16502025 | 46.2 | 29.7 | 25.0 | 32.4 | 27.6 | 30 | 25 | 35 | 30 |
| JHC42C5*F | 8HK16502025 | 46.2 | 31.7 | 25.0 | 34.4 | 27.6 | 35 | 25 | 35 | 30 |
| JHC42D5*F | 8HK16502025 | 46.2 | 31.7 | 25.0 | 34.4 | 27.6 | 35 | 25 | 35 | 30 |
| JHC48C5*G | 8HK16502025 | 46.2 | 33.7 | 25.0 | 36.4 | 27.6 | 35 | 25 | 40 | 30 |
| JHC48D5*G | 8HK16502025 | 46.2 | 31.7 | 25.0 | 34.4 | 27.6 | 35 | 25 | 35 | 30 |
| 8HK16502525 | 57.7 | 38.0 | 31.2 | 41.3 | 34.5 | 40 | 35 | 45 | 35 | |
| JHC60C5*H | 8HK16502025 | 46.2 | 33.7 | 25.0 | 36.4 | 27.6 | 35 | 25 | 40 | 30 |
| JHC60D5*H | 8HK16502025 | 46.2 | 31.7 | 25.0 | 34.4 | 27.6 | 35 | 25 | 35 | 30 |
| 8HK16502525 | 57.7 | 38.0 | 31.2 | 41.3 | 34.5 | 40 | 35 | 45 | 35 | |
| JHC60D5*J | 8HK16502025 | 46.2 | 33.7 | 25.0 | 36.4 | 27.6 | 35 | 25 | 40 | 30 |
| 8HK16502525 | 57.7 | 40.0 | 31.2 | 43.3 | 34.5 | 40 | 35 | 45 | 35 | |
Note: The 20 kW and 25 kW heater models (8HK16502025 and 8HK16502525) come with circuit breakers standard. MOP = Maximum Overcurrent Protection device; must be HACR type circuit breaker or time delay fuse. Refer to the latest edition of the National Electric Code or in Canada the Canadian electrical Code and local codes to determine correct wire sizing [1].
G. Airflow Data
Airflow is a critical parameter for ensuring proper system operation, comfort, and efficiency. The JHC Series provides detailed airflow data (CFM) across various models and DIP switch settings for both high (HI) and low (LO) cooling operations. This information allows contractors to configure units for optimal airflow based on ductwork design and space requirements [1].
Table 10: Airflow Data JHC18 Models to JHC42 Models (CFM)
| DIP switch | JHC18B5*B | JHC24B5*C | JHC36B5*D | JHC36C5*D | JHC42C5*F | JHC42D5*F | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HI COOL | LO COOL | HI COOL | LO COOL | HI COOL | LO COOL | HI COOL | LO COOL | HI COOL | LO COOL | HI COOL | LO COOL | |
| 000 | 575 | 400 | 700 | 475 | 800 | 550 | 825 | 600 | 1100 | 700 | 1125 | 675 |
| 001 | 625 | 450 | 725 | 525 | 900 | 600 | 900 | 650 | 1200 | 750 | 1225 | 875 |
| 010 | 675 | 475 | 800 | 575 | 975 | 650 | 1000 | 700 | 1300 | 800 | 1325 | 925 |
| 011 | 725 | 525 | 850 | 625 | 1075 | 700 | 1050 | 750 | 1400 | 850 | 1425 | 1000 |
| 100 | 775 | 550 | 925 | 650 | 1150 | 775 | 1150 | 825 | 1500 | 925 | 1550 | 1075 |
| 101 | 850 | 575 | 975 | 700 | 1250 | 825 | 1225 | 850 | 1625 | 975 | 1675 | 1150 |
| 110 | 900 | 625 | 1075 | 725 | 1325 | 900 | 1300 | 900 | 1725 | 1050 | 1775 | 1225 |
| 111 | 950 | 650 | 1100 | 775 | 1400 | 950 | 1350 | 950 | 1825 | 1100 | 1875 | 1275 |
Table 11: Airflow Data for JHC48 Models to JHC60 Models (CFM)
| DIP switch | JHC48C5*G | JHC48D5*G | JHC60C5*H | JHC60D5*H | JHC60D5*J | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| HI COOL | LO COOL | HI COOL | LO COOL | HI COOL | LO COOL | HI COOL | LO COOL | HI COOL | LO COOL | |
| 000 | 1150 | 725 | 1125 | 700 | 1400 | 975 | 1400 | 975 | 1375 | 925 |
| 001 | 1250 | 775 | 1225 | 875 | 1525 | 1075 | 1550 | 1075 | 1475 | 1050 |
| 010 | 1350 | 850 | 1325 | 925 | 1650 | 1150 | 1700 | 1150 | 1750 | 1125 |
| 011 | 1450 | 900 | 1425 | 1000 | 1800 | 1250 | 1850 | 1250 | 1875 | 1225 |
| 100 | 1575 | 975 | 1550 | 1075 | 1925 | 1350 | 2000 | 1350 | 2000 | 1350 |
| 101 | 1675 | 1025 | 1675 | 1150 | 2050 | 1425 | 2125 | 1425 | 2000 | 1400 |
| 110 | 1775 | 1100 | 1800 | 1225 | 2050 | 1525 | 2125 | 1550 | 2000 | 1475 |
| 111 | 1875 | 1150 | 1900 | 1275 | 2050 | 1600 | 2125 | 1650 | 2000 | 1575 |
Note: Air handler units have been tested to UL 60335-2-40 / CSA 22.2 No. 236 standards up to 0.60 in. W.C. external static pressure. Dry coil conditions only, tested without filters. For optimal performance, external static pressures of 0.2 in. to 0.5 in. are recommended. Heating applications tested at 0.50 in. W.C. esp. Above 0.5 in. CFM is reduced by 2% per 0.1 in. increase in static. Low speed cooling is used only with two-stage outdoor units. Dehumidification speed is 85% of the selected High speed COOL. When operating in both heat pump and electric heat modes, the airflow (CFM) will be whichever speed is greater. At some settings, LOW COOL and/or LOW HEAT airflow may be lower than what is required to operate an airflow switch on certain models of electronic air cleaners. Consult the instructions for the electronic air cleaner for further details. Airflow (CFM) indicator light (LED2) flashes once for every 100 CFM. for example, 12 flashes is 1200 CFM. Blinks are approximate +/- 10% of actual CFM [1].
II. Common York HVAC System Troubleshooting
Effective troubleshooting is paramount for HVAC contractors to quickly diagnose and resolve issues, minimizing downtime and ensuring client satisfaction. York HVAC systems, while robust, can encounter various operational challenges. This section outlines general troubleshooting steps and delves into specific issues related to air conditioners, gas furnaces, and chillers.
A. General Troubleshooting Steps
Before initiating complex diagnostics, contractors should follow a systematic approach:
- Verify Power Supply: Ensure the unit is receiving power and that circuit breakers are not tripped.
- Check Thermostat Settings: Confirm the thermostat is set to the correct mode (HEAT/COOL) and desired temperature.
- Inspect Air Filters: Clogged air filters restrict airflow, leading to reduced efficiency and potential system shutdowns. Regularly check and replace filters.
- Examine Outdoor Disconnect Switch: Ensure the outdoor unit\"s disconnect switch is in the ON position.
- Listen for Unusual Noises: Atypical sounds can indicate mechanical issues, such as failing motors or loose components.
- Visual Inspection: Look for obvious signs of damage, leaks, or blockages around the indoor and outdoor units.
B. Air Conditioner Troubleshooting
For York air conditioners, common issues often revolve around cooling performance. Contractors should consider the following [2]:
- No Cooling: Check thermostat settings (COOL mode, desired temperature), ensure outdoor unit is running, and verify circuit breakers.
- Poor Airflow: Blocked air filters are a frequent culprit. Also, ensure air registers (supply or return ducts) are open and unobstructed.
- Refrigerant Leaks: Low refrigerant levels can severely impact cooling capacity. This requires professional diagnosis and repair, adhering to refrigerant handling guidelines.
- Frozen Evaporator Coil: Often a symptom of restricted airflow or low refrigerant, a frozen coil will prevent effective cooling.
C. Gas Furnace Troubleshooting
York gas furnaces require specific attention to heating elements and safety controls [2]:
- No Heat: Confirm thermostat is in HEAT mode and set above ambient temperature. Check if the fan is running and if circuit breakers are tripped.
- Ignition Problems: Inspect the ignitor for cracks or wear. A faulty ignitor or inadequate fuel supply can prevent the furnace from firing.
- Blower Issues: If the blower isn\"t running, check the thermostat\"s fan setting and the furnace\"s SSU light switch.
- Dirty Air Filter: Similar to AC units, a dirty filter can cause a furnace to shut down due to airflow restrictions.
D. Chiller Fault Codes and Diagnostics
York chillers are sophisticated systems that often provide fault codes to aid in diagnostics. Understanding these codes is crucial for efficient troubleshooting [3]:
- Unit Won\"t Start or Run: This can be due to a lack of power supply, wiring issues, defective control/display boards, or a blown line fuse. Contractors should verify the main power supply and inspect electrical components.
- Low Ambient Temperature Fault: Occurs when the ambient temperature falls below the programmed operating temperature or if the ambient sensor is faulty. Verify sensor readings against a thermometer.
- High Ambient Temperature Fault: Indicates ambient temperature above the maximum operating limit or a malfunctioning ambient sensor.
- Low Leaving Chilled Liquid Fault: May result from restricted flow, rapid flow changes, flow below minimum requirements, or a small water loop. A broken chilled water sensor can also be a cause.
- Control Voltage System Fault: Typically signifies a blown system fuse, requiring an authorized technician for repair.
- High Oil Temperature System Fault: Can be caused by a broken oil temperature sensor, malfunctioning condenser fans (e.g., running backward), or dirty coils.
- High Discharge Pressure System Fault: Often linked to damaged or dirty coils, inoperable fans, or an overcharged system. Cleaning coils, checking fan operation, and verifying refrigerant charge are key steps.
- High Motor Temperature System Fault: Indicates high temperature input from sensors, potentially due to a broken discharge temperature sensor, faulty condenser fans, dirty coils, or high superheat.
- Low Suction Pressure System Fault: May stem from low flow or charge, an incorrect transducer reading, or an inoperable feed/drain valve.
- Discharge Pressure Limiting System Fault: Can be caused by a broken discharge transducer, high ambient temperature (normal response), or inoperable fans due to obstruction or damage.
- Motor Current Limiting System Fault: Activated by high motor current anticipatory control, often due to high ambient temperature, remote/panel limiting, dirty condenser coils, or inoperable fans.
- VSD Fault: High Baseplate Temperature: Suggests low coolant levels or a broken glycol pump, VSD board, or IBGT module.
- VSD Fault: Low DC Bus Voltage: Points to a broken SCR/diode module or SCR trigger board.
III. York HVAC Parts and Compatibility
For HVAC contractors, ensuring the use of correct and compatible replacement parts is critical for maintaining the efficiency, reliability, and longevity of York HVAC systems. Using genuine York parts or approved equivalents helps preserve system integrity and warranty coverage.
A. Importance of Genuine York Parts
Genuine York parts are designed and tested to meet the exact specifications and performance standards of York equipment. They ensure optimal fit, function, and durability, which is vital for system performance and energy efficiency. Using non-genuine or incompatible parts can lead to reduced efficiency, premature component failure, and voided warranties. Contractors should prioritize sourcing parts from authorized distributors or reputable suppliers to guarantee authenticity and quality [4].
B. Identifying Compatible Replacement Parts
Identifying the correct replacement part requires careful attention to the unit\"s model and serial numbers. These identifiers allow contractors to cross-reference with official York parts catalogs and technical documentation. Many online platforms and authorized distributors offer tools to look up parts based on unit information, ensuring compatibility. When in doubt, consulting with York technical support or experienced parts specialists is recommended [4].
C. Common Replacement Parts Overview
A wide array of replacement parts are commonly needed for York HVAC systems, ranging from electrical components to mechanical parts. These include, but are not limited to, blower motors, capacitors, contactors, relays, ignitors, flame sensors, fan blades, evaporator coils, condenser coils, compressors, and various sensors. Specialized tools and accessories, such as HVAC tools, are also essential for proper installation and maintenance. For specific needs, contractors can explore resources like HVAC parts suppliers and HVAC contractor resources.
IV. Frequently Asked Questions (FAQ)
Q1: What are the key features of York JHC Series air handlers?
The York JHC Series air handlers are known for their premium variable speed ECM motors, multi-position installation flexibility, MaxAlloy™ coils, next-generation even-flow distributors, and A2L refrigerant readiness with factory-installed sensors. They are designed for ease of installation and serviceability, offering robust and efficient performance for both cooling and heat pump applications.
Q2: How do I interpret York HVAC model nomenclature?
York HVAC model nomenclature is a coded system where each character or group of characters represents specific features such as product type, capacity, motor type, voltage, and control strategy. Contractors can refer to the detailed nomenclature tables in York\"s technical guides to decode these model numbers and understand the exact specifications of a unit.
Q3: What are common troubleshooting steps for a York air conditioner that isn\"t cooling?
If a York air conditioner isn\"t cooling, contractors should first check the thermostat settings and ensure the unit has power. Next, inspect the air filter for blockages and verify that the outdoor unit\"s disconnect switch is ON. Further investigation may involve checking refrigerant levels, coil cleanliness, and the operation of the outdoor fan and compressor.
Q4: Where can I find genuine York replacement parts and ensure compatibility?
Genuine York replacement parts can be sourced through authorized York distributors and reputable HVAC parts suppliers. To ensure compatibility, it is crucial to use the unit\"s model and serial numbers to cross-reference with official York parts catalogs or consult with knowledgeable parts specialists. Using genuine parts guarantees optimal system performance and maintains warranty validity.
Q5: What are some common fault codes for York chillers and their meanings?
York chillers can display various fault codes. Common examples include \"Unit Won\"t Start or Run\" (indicating power issues or control board failures), \"Low/High Ambient Temperature Fault\" (related to sensor readings or environmental conditions), and \"High Discharge Pressure System Fault\" (often due to dirty coils or inoperable fans). Each code points to a specific issue, requiring targeted diagnostic and repair procedures.
References
- YORK Technical Guide: JHC Series. Johnson Controls Ducted Systems.
- HVAC Troubleshooting Guide. YORK®.
- York Chiller Troubleshooting & Fault Codes. Parts Town.
- York® Residential HVAC Replacement Parts. YorkNow.com.