Johnson Controls York YH4 Series Installation Manual

Outdoor split-system single-phase heat pump

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Installation Manual: R-454B Outdoor

Split-System Single-Phase Heat Pump -

YH4, XH4, and RH4 Series

York International Corporation, 5005

6396600-UIM-A-0324

York Drive, Norman, OK 73069

Supersedes: Nothing

2024-03-12

Johnson Controls Ducted Systems

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Summary of Contents for Johnson Controls York YH4 Series

Page 1 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series York International Corporation, 5005 6396600-UIM-A-0324 York Drive, Norman, OK 73069 Supersedes: Nothing 2024-03-12 Johnson Controls Ducted Systems...
Page 2 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 3 Charging the system............................38 Measuring indoor airflow........................39 Checking the indoor cubic feet per minute (CFM) settings..............39 Determining the total system charge....................39 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 4 Cooling operation..........................61 Heating operation..........................61 Emergency heat........................... 61 Pressure switch fault detection and lockout..................62 Third-party trademarks notice........................62 Wiring diagrams............................. 63 Start-up sheet..............................64 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 5 Note indicates something of special interest or importance. Notes can contain any type of information except safety information. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 6 R-454B systems operate at higher pressures than R-22 systems. Do not use R-22 service equipment or components on R-454B equipment. Service equipment must be rated for R-454B. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 7 If conducting any hot work on the refrigerating equipment or any associated parts, you must have appropriate fire-extinguishing equipment on hand. Have a dry powder or  fire extinguisher adjacent to the charging area. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 8 Table 3: Minimum room area System charge (lb-oz) Minimum room area Minimum total Minimum system airflow (CFM) conditioned area (ft 4-12 5-12 6-12 7-12 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 9 11-12 12-0 12-4 12-8 12-12 13-0 13-4 13-8 13-12 14-0 14-4 14-8 14-12 15-0 15-4 15-8 15-12 16-0 16-4 16-8 16-12 17-0 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 10 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 11 Remove refrigerant according to the Removal and evacuations section of the outdoor unit's Installation Manual. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 12 Note: The 10-pin mitigation harness is included in the loose parts kit. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 13 NC (Normally Closed) to Test. Make sure to return the test jumper to NC once testing is complete. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 14 When the system is in standby mode, repeat the above test for a W call for heating. When testing is complete, re-install the front cover on the contol box. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 15 4. You may not need to perform tasks indicated with a dashed outline, depending on the specific installation. Figure 4: Installation overview Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 16 Coastal regions where the equipment is prone to atmospheric corrosion • Near hot springs where the equipment is prone to sulfide gas corrosion • In proximity to high-frequency or wireless equipment Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 17 The outdoor unit can be accessed safely when mounted, for example, for servicing. • The location of the outdoor unit allows you provide adequate support for the base pan. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 18 • Recovery equipment (including refrigerant recovery containers) must be specifically designed to handle R-454B. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 19 Install refrigerant pipes and components in locations where they are unlikely to be exposed to corrosive substances, unless the components are made from corrosion-resistant materials or adequately protected against corrosion. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 20 Install the unit in as level a position as possible while maintaining the clearances shown in Figure 5 Figure Fasten the outdoor unit tightly to prevent noise. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 21 Figure 5: Typical installation clearances Figure 6: Alternative installation clearances Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 22 Replace the refrigeration piping when replacing an R-22, R-410A, or other refrigerant unit with an R454B unit to reduce cross-contamination of oils and refrigerants. See Table Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 23 After a total of 10 h runtime where the suction-line pressure drop has not exceeded 3 psig, replace the liquid-line drier, and remove the suction-line drier. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 24 • Install the lines so that they do not obstruct service access to the coil, air handling system, or filter. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 25 Calibration of liquid line pressure loss or gain Determination of vapor line velocity Elevation limitations TXV connections System charging Traps Crankcase heater Figure 8: Underground installation Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 26 You can avoid serious service problems by taking adequate precautions to ensure an internally clean and dry system. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 27 WARNING Never attempt to repair any brazed connections while the system is under pressure. Personal injury could result. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 28 Hand tighten and turn an additional quarter turn to seal. Do not over-tighten fittings. See Figure Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 29 Install the TXV equalizer line onto the vapor line by hand tightening the 1/4 in. SAE coupling nut to the equalizer fitting, and applying an additional third turn to seal. See Figure Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 30 Insulate the bulb using thermal insulation provided to protect it from the effect of the surrounding ambient temperature. Cover completely to insulate. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 31 500 microns. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 32 Replace the service valve cap finger tight, then tighten an additional 1/12 turn (1/2 hex flat). Replace the cap to prevent leaks. See for checking and recording system charge. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 33 Wire size must be sized per NEC requirements. • The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 34 Do not place it on an outside wall or where it is exposed to the radiant effect from exposed glass or appliances, drafts from outside doors or supply air grilles. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 35 NOTICE Do not bond any of the outdoor unit W wires together. NOTICE *W2 input only available on two-stage gas heat models. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 36 Refer to the JHE air handler Installation Manual for full details. Figure 15: Standard ECM air handler and standard multi-stage heat pump - conventional wiring Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 37 If a dehumidification control is installed, it is recommended that a minimum air flow of 325 CFM/ton be supplied at all times. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 38 Ensure that the refrigerating system is properly grounded before charging it with refrigerant. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 39 Calculate the additional charge for the refrigerant piping using the Tabular Data Sheet if the line length is greater than 15 ft (4.6 m) (item 3). Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 40 For all other cooling charging charts and the heating charging charts, see Table Table 40. You can also access these charts in the Service Application Data section at www.simplygettingthejobdone.com. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 41 Note: An asterisk (*) on indoor match names is used in place of the cabinet width, refrigerant type, and metering device characters. Refer to the indoor unit manuals for the details on indoor unit nomenclature. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 42 460 (6) 466 (6) 472 (6) 488 (6) 487 (6) 493 (6) 499 (6) 516 (6) 514 (6) 520 (6) 526 (6) Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 43 461 (6) 467 (6) 473 (6) 490 (6) 488 (6) 494 (6) 501 (6) 517 (6) 515 (6) 521 (6) 528 (6) Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 44 476 (11) 482 (11) 489 (11) 506 (11) 504 (12) 511 (11) 518 (11) 535 (12) 533 (12) 540 (12) 548 (12) Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 45 455 (1) 462 (1) 469 (2) 483 (1) 481 (1) 489 (1) 496 (2) 511 (1) 508 (1) 516 (1) 523 (2) Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 46 467 (7) 474 (7) 481 (8) 496 (7) 495 (7) 502 (7) 509 (8) 524 (7) 522 (7) 530 (7) 537 (8) Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 47 (11) (12) (13) (14) (17) (15) (17) (19) (19) (21) (23) (20) (22) (25) (22) (25) (27) (32) (35) (37) Suction pressure Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 48 1600 Liquid pressure (subcool) (18) (18) (18) (21) (21) (21) (38) (39) (40) (22) (23) (24) (21) (23) (26) (31) (31) (32) Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 49 (32) (32) (35) (35) (35) (37) (37) (37) (35) (36) (38) (34) (34) (34) (34) (34) (35) (35) (35) (35) Suction pressure Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 50 (subcool) (32) (33) (34) (36) (36) (38) (37) (38) (40) (37) (39) (41) (35) (35) (39) (35) (36) (37) (36) (35) (34) Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 51 (32) (33) (34) (35) (37) (35) (36) (38) (35) (37) (39) (32) (34) (36) (32) (33) (35) (32) (32) (33) Suction pressure Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 52 With the fan switch in the AUTO position, a circuit is made from the thermostat cooling contact through the blower relay to provide blower operation. The system cycles with thermostat demand to provide cooling as needed. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 53 The compressor body must not be heated by an open flame or other ignition sources to accelerate this process. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 54 Procedure Safely remove refrigerant, following local and Required national codes. Purge circuit with inert gas (oxygen-free Required nitrogen). Evacuate the refrigerant. Required Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 55 For appliances containing flammable refrigerants, ensure that there are labels on the equipment stating that the equipment contains a flammable refrigerant. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 56 > 5 the STATUS LED six times (0.1 s ON / 0.1 s OFF) to indicate that the error memory is clear. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 57 Figure 17: Heat pump flow diagram Figure 18: Demand defrost control module Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 58 1/3 s on, 1/3 s off flashes, waits 2 s, then energizes the output for three more 1/3 s on, 1/3 s off flashes and repeats. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 59 This happens only if the coil sensor temperature conditions allow defrost to occur. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 60 When power is applied to the control and after the completion or termination of each defrost cycle, the control starts a 40 min timer. When this timer expires, the Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 61 When the thermostat calls for emergency heat operation (W signal without a Y signal), the control energizes the W out terminal immediately. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 62 Third-party trademarks notice Third-Party Trademarks Notice: For information about third-party trademarks, refer to the relevant company websites. Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 63 Wiring diagrams Figure 20: Wiring diagram - single-phase - 208/230V PSC fan motor Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 64 Start-up sheet Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...
Page 65 Installation Manual: R-454B Outdoor Split-System Single-Phase Heat Pump - YH4, XH4, and RH4 Series Johnson Controls Ducted Systems...

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York xh4 series York rh4 series York r-454b