York YLUA0248 Series Installation Operation & Maintenance
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York YLUA0248 Series Installation Operation & Maintenance

Air-cooled scroll condensing units
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AIR-COOLED SCROLL CONDENSING UNITS
Supersedes: 150.73-NM2 (609)
Form 150.73-NM2 (920)
INSTALLATION, OPERATION, MAINTENANCE
035-22868-100
YLUA0248 – YLUA0498
AIR-COOLED SCROLL CONDENSING UNITS
STYLE A (50 Hz)
70 ton to 135 ton
245 kW to 475 kW
R-410A
Issue Date:
September 7, 2020

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  • Page 1 AIR-COOLED SCROLL CONDENSING UNITS Supersedes: 150.73-NM2 (609) Form 150.73-NM2 (920) INSTALLATION, OPERATION, MAINTENANCE 035-22868-100 YLUA0248 – YLUA0498 AIR-COOLED SCROLL CONDENSING UNITS STYLE A (50 Hz) 70 ton to 135 ton 245 kW to 475 kW R-410A Issue Date: September 7, 2020...
  • Page 2 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 IMPORTANT! READ BEFORE PROCEEDING! GENERAL SAFETY GUIDELINES This equipment is a relatively complicated apparatus. which it is situated, as well as severe personal injury or During rigging, installation, operation, maintenance, death to themselves and people at the site. or service, individuals may be exposed to certain com- This document is intended for use by owner-authorized ponents or conditions including, but not limited to:...
  • Page 3 Planned Service Agreement that leverages real time and generalized conditions. In lieu of the traditional and historical data, delivering performance reporting, maintenance program, a Johnson Controls YORK corrective actions required and data enabled guidance Conditioned Based Maintenance (CBM) program can for optimal operation and lifecycle assurance.
  • Page 4 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 5: Table Of Contents

    FORM 150.73-NM2 ISSUE DATE: 09/07/2020 TABLE OF CONTENTS SECTION 1 – GENERAL EQUIPMENT INFORMATION AND SAFETY ............11 Introduction ..............................11 Compressors ..............................11 Condenser ..............................11 Refrigerant Circuit ............................11 Warranty ................................. 11 Safety And Quality ............................12 About This Manual............................12 Misuse Of Equipment .............................
  • Page 6 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 TABLE OF CONTENTS (CONT’D) Refrigerant Charge ............................40 Filter Driers/ Sight Glasses/ TXVs ........................40 Refrigerant Piping Notes ..........................41 Control Wiring ..............................43 SECTION 5 – TECHNICAL DATA ........................45 Operational Limitations (English) ........................45 Physical Data (English) ..........................
  • Page 7 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 TABLE OF CONTENTS (CONT’D) Compressor Run Status ..........................133 Alarm Status ..............................133 BAS/EMS Discharge Air Temperature Reset Using A Voltage Or Current Signal ........134 SECTION 9 – SERVICE AND TROUBLESHOOTING ..................135 Clearing History Buffers..........................135 Service Mode ...............................
  • Page 8 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 LIST OF FIGURES FIGURE 1 - Compressors ............................15 FIGURE 2 - Unit Components Front ........................20 FIGURE 3 - Power Panel Components ........................21 FIGURE 4 - Power Panel / Control Components ....................22 FIGURE 5 - Refrigerant Flow Diagram ........................28 FIGURE 6 - Process And Instrumentation Diagram ....................29 FIGURE 7 - Unit Rigging ............................31 FIGURE 8 - Single-Point Supply Connection –...
  • Page 9 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 LIST OF TABLES TABLE 1 - Fitting Equivalent Lengths ........................38 TABLE 2 - Refrigerant Piping Charges ........................38 TABLE 3 - Miscellaneous Liquid Line Pressure Drops ...................38 TABLE 4 - Refrigerant Line Connections .......................39 TABLE 5 - Refrigerant Line Pressure Drops (English) ...................41 TABLE 6 - Voltage Limitations ..........................45 TABLE 7 - Physical Data (English) .........................46 TABLE 8 - Micro Panel Power Supply ........................47...
  • Page 10 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 11: Section 1 - General Equipment Information And Safety

    FORM 150.73-NM2 ISSUE DATE: 09/07/2020 SECTION 1 – GENERAL EQUIPMENT INFORMATION AND SAFETY INTRODUCTION Motors – The fan motors are Totally Enclosed Air- The 70-130 Ton (245 - 475 kW) YLUA Condensing Over, squirrel-cage type, current protected. They fea- Unit Models are shipped complete from the factory ture ball bearings that are double-sealed and perma- ready for field installation.

  • Page 12: Safety And Quality

    FORM 150.73-NM2 SECTION 1 – GENERAL EQUIPMENT INFORMATION AND SAFETY ISSUE DATE: 09/07/2020 • Only genuine YORK approved spare parts, oils, ABOUT THIS MANUAL coolants, and refrigerants must be used. The following terms are used in this document to alert •...

  • Page 13: Misuse Of Equipment

    FORM 150.73-NM2 SECTION 1 – GENERAL EQUIPMENT INFORMATION AND SAFETY ISSUE DATE: 09/07/2020 MISUSE OF EQUIPMENT Suitability for Application ing and locking-off the power supply. Servicing and maintenance on live equipment must only be per- The unit is intended for DX cooling applications and is formed by suitably trained and qualified personnel.
  • Page 14 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 15: Section 2 - Product Description

    FORM 150.73-NM2 ISSUE DATE: 09/07/2020 SECTION 2 – PRODUCT DESCRIPTION INTRODUCTION GENERAL SYSTEM DESCRIPTION YORK Millennium Air-Cooled Scroll Condensing ® Compressors Units can be used for all air conditioning applications The condensing unit has suction-gas cooled, hermetic, using central station air handling or terminal units. They scroll compressors.

  • Page 16: Refrigerant Circuit

    FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 DISPLAY/PRINT of typical information: Condenser Coils – Fin and tube condenser coils of seamless, in- • Suction temperatures (optional) ternally-enhanced, high-condensing-coefficient, corro- • Ambient temperature sion resistant copper tubes are arranged in staggered •...

  • Page 17: High Ambient Kit

    • Each system suction pressure memory for 5 years minimum. • System discharge pressure HIGH AMBIENT KIT • Discharge Air Temperature Reset via a YORK ISN DDC or Building Automation System (by Required if units are to operate when the ambient tem- others) via: perature is above 115°F (46°C).

  • Page 18: Accessories And Options

    SWITCH WITH INDIVIDUAL SYSTEM BREAK- (The standard control panel can be directly connected ERS - Includes unit-mounted disconnect switch with to a YORK Building Automated System via the stan- external, lockable handles (in compliance with Article dard on board RS485 communication port.) 440-14 of N.E.C.) to isolate unit power voltage for...
  • Page 19 Panels prevent unauthorized access to units. Enclosure Panels can provide an aesthetically pleas- ing alternative to expensive fencing. Additionally, for proper head pressure control, YORK recommends the use of Condenser Louvered Panels for winter applica- tions where wind gusts may exceed five miles per hour.

  • Page 20: Unit Components

    FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 UNIT COMPONENTS FAN ASSEMBLIES CONTROL PANEL COMPRESSORS CONDENSER COILS POWER PANEL FIGURE 2 - UNIT COMPONENTS FRONT JOHNSON CONTROLS...

  • Page 21: Figure 3 - Power Panel Components

    FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 DISCONNECT SWITCH FAN FUSES FAN CONTACTORS FAN CONTACTOR COMPRESSOR OVERLOADS XTBF1 COMPRESSOR CONTACTORS LD13247 FIGURE 3 - POWER PANEL COMPONENTS JOHNSON CONTROLS...

  • Page 22: Figure 4 - Power Panel / Control Components

    FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 CONTROL / POWER PANEL COMPONENTS FAN FUSES MICROCOMPUTER CONTROL FAN CONTACTORS CONTROL RELAY CENTER MICROPANEL DISPLAY KEYPAD COMPRESSOR OVERLOADS XTBC1 MICROBOARD XTBC2 COMPRESSOR XTBF2 CONTACTORS LD13248 FIGURE 4 - POWER PANEL / CONTROL COMPONENTS JOHNSON CONTROLS...

  • Page 23: Product Identification Number (Pin)

    FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 PRODUCT IDENTIFICATION NUMBER (PIN) BASIC UNIT 0468 0148 Design Series YC=York Scroll Type Start X=Across-the-Line Voltage Code -50 = 380/415 - 3- 50 Unit 17=200-3-60 28=230-3-60 40=380-3-60 Condensing 46=460-3-60 58=575-3-60...
  • Page 24 FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 PRODUCT IDENTIFICATION NUMBER (PIN) (CON’T) FEATURE FEATURE DESCRIPTION OPTION OPTION DESCRIPTION 0248 0248 0278 0278 0298 0298 0308 0308 Capacity (PIN 5-8) 0338 0338 0408 0408 0468 0468 0498 0498 High Efficiency Standard Efficiency UNIT...
  • Page 25 FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 PRODUCT IDENTIFICATION NUMBER (PIN) (CON’T) FEATURE FEATURE DESCRIPTION OPTION OPTION DESCRIPTION PUMP Motor Current Module (PIN 26) Motor Current Module (standard) REMOTE Remote Panel (PIN 27) Special Quote Sequence Kit (PIN 28) Special Quote Leaving Water Temp = {TEMP/NUM} degrees TEMP...
  • Page 26 FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 PRODUCT IDENTIFICATION NUMBER (PIN) (CON’T) FEATURE FEATURE DESCRIPTION OPTION OPTION DESCRIPTION HEAT Heat Recovery (PIN 46) Special Quote FANMOTORS Fan Motors (PIN 47) TEAO Fan Motors No Enclosure required Wire (Full Unit) Encl Panels (factory) Wire (Full Unit) Encl Panels (field) Wire/Louvered Encl Panels (factory) Wire/Louvered Encl Panels (field)
  • Page 27 FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 PRODUCT IDENTIFICATION NUMBER (PIN) (CON’T) FEATURE FEATURE DESCRIPTION OPTION OPTION DESCRIPTION PIN 59 Special quote PKGOPT PIN 60 Special quote Plant of Manufacture - Monterrey Plant of Mfg (PIN 61) Plant of Manufacture - Sabadell Curitiba, Brazil Mexico, ES...

  • Page 28: Refrigerant Flow Diagram

    FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 REFRIGERANT FLOW DIAGRAM LD04284A FIGURE 5 - REFRIGERANT FLOW DIAGRAM JOHNSON CONTROLS...

  • Page 29: Process And Instrumentation Diagram

    FORM 150.73-NM2 SECTION 2 – PRODUCT DESCRIPTION ISSUE DATE: 09/07/2020 PROCESS AND INSTRUMENTATION DIAGRAM Control Functions: DV - Displa y Value Fans Fans Components: CHT - Chilled Liquid Temperature HPC - High Pressure Cutout Pressure Relief Valve LPC - Low Pressure Cutout HPL - High Pressure Load Limiting Ser vice (Ball) Valve LTC - Low Temperature Cutout...
  • Page 30 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 31: Section 3 - Handling And Storage

    FORM 150.73-NM2 ISSUE DATE: 09/07/2020 SECTION 3 – HANDLING AND STORAGE DELIVERY AND STORAGE UNIT RIGGING To ensure consistent quality and maximum reliability, Use spreader bars to avoid lifting chains hitting the all units are tested and inspected before leaving the fac- unit.
  • Page 32 FORM 150.73-NM2 SECTION 3 – HANDLING AND STORAGE ISSUE DATE: 09/07/2020 Moving the Condensing Unit Lifting Weights Prior to moving the unit, ensure that the installation For details of weights and weight distribution, refer site is suitable for installing the unit and is easily ca- to the data shipped in the unit information packet and pable of supporting the weight of the unit and all as- unit nameplate.

  • Page 33: Section 4 - Installation

    FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 SECTION 4 – INSTALLATION To ensure warranty coverage, this equip- The units must be installed with sufficient clearances ment must be commissioned and serviced for air entrance to the condenser coil, for air discharge by an authorized Johnson Controls away from the condenser, and for servicing access.

  • Page 34: Spring Isolators (Optional)

    The following duct work recommendations are intend- in the YORK Engineering Guide for the specific con- ed to ensure satisfactory operation of the unit. Failure densing unit model. Sound blankets for the compres- to follow these recommendations could cause damage sors and low sound fans are available.

  • Page 35: Compressor Heaters

    FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 Copper power wiring only should be used for supply- ELECTRICAL WIRING ing power to the unit. This is recommended to avoid Field Wiring safety and reliability issues resulting from connection failure at the power connections to the unit. Aluminum Power wiring must be provided through a fused dis- wiring is not recommended due to thermal character- connect switch to the unit terminals (or optional mold-...
  • Page 36 FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 See Air Proving Switch/Remote Start- Evaporator Blower Start Contacts Stop Contacts. For constant fan operation: Terminal block XTBC2 - terminals 23 to 24, are normally open contacts that can be used to switch field supplied power to provide a start signal to the evaporator blower contactor.

  • Page 37: Compressor Heaters

    LEMS, OR LACK OF OIL RETURN. For more details, refer to “ASHRAE Refrigeration Filter driers and sight glasses are shipped loose for field Handbook, Chapter 2” and YORK DX Piping Guide installation on each refrigerant circuit. Field refriger- “Form 050.40-ES2”...

  • Page 38: Table 1 - Fitting Equivalent Lengths

    FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 TABLE 1 - FITTING EQUIVALENT LENGTHS *COPPER FITTING EQUIVALENT LENGTHS LINE SIZE O.D. SHORT-RADIUS ELL LONG-RADIUS ELL 3/4" (19mm) 6.5 ft. (2m) 4.5 ft. (1.4m) 7/8" (22mm) 7.8 ft. (2.4m) 5.3 ft. (1.6m) 1-1/8"...

  • Page 39: Table 4 - Refrigerant Line Connections

    7/8” for the optional factory mounted hot gas bypass valve. Note: Hot gas bypass is only available for refrigerant system number 1. 7. For more information, please refer to either the York DX Piping Guide (Form 050.40-ES2) or the ASHRAE Refrigertion Handbook.

  • Page 40: Refrigerant Line Sizing

    FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 REFRIGERANT LINE SIZING Condenser Below Evaporator When the condensing unit is located below the evapo- Refrigerant piping systems must be designed to pro- rator, the liquid line must be designed for both friction vide practical line sizes without excessive pressure loss and static head loss due the vertical rise.

  • Page 41: Refrigerant Piping Notes

    FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 TABLE 5 - REFRIGERANT LINE PRESSURE DROPS (ENGLISH) SUCTION LINE LIQUID LINE VELOCITY MODEL SYSTEM NOMINAL COPPER PRESSURE NOMINAL COPPER PRES- @ NOMINAL NUMBER NUMBER TONS TYPE L DROP TONS TYPE L SURE DROP CAPACITY INCHES OD...

  • Page 42: Figure 8 - Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch

    FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON- FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER Power Panel Power Panel Power Panel Control Panel Control Panel Control Panel Terminal Block, Terminal Block, MICROPANEL MICROPANEL NF Disconnect SW NF Disconnect SW or Circuit Breaker...

  • Page 43: Control Wiring

    FORM 150.73-NM2 SECTION 4 – INSTALLATION ISSUE DATE: 09/07/2020 CONTROL WIRING PWM INPUT (CAN ONLY BE USED WITH DISCHARGE AIR TEMP CONTROL) LOAD LIMIT INPUT AIR PROVING SWITCH (DISCHARGE AIR TEMP CONTROL AND SUCTION PRESSURE CONTROL) AND REMOTE START/STOP SYSTEM 1 THERMOSTAT (SUCTION PRESSURE CONTROL ONLY) (JUMPER FOR DISCHARGE AIR TEMP CONTROL) SYSTEM 2 THERMOSTAT (SUCTION PRESSURE CONTROL ONLY) XTBC1...
  • Page 44 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 45: Section 5 - Technical Data

    FORM 150.73-NM2 ISSUE DATE: 09/07/2020 SECTION 5 – TECHNICAL DATA OPERATIONAL LIMITATIONS (ENGLISH) VOLTAGE LIMITATIONS The following voltage limitations are absolute and operation Excessive flow will cause damage to beyond these limitations may cause serious damage to the the cooler. Do not exceed max. cooler compressor.

  • Page 46: Physical Data (English)

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 PHYSICAL DATA (ENGLISH) YLUA0248_ – YLUA0498_ 50 Hz TABLE 7 - PHYSICAL DATA (ENGLISH) REFRIGERANT R-410A MODEL NUMBER YLUA - HIGH EFFIECY UNITS GENERAL UNIT DATA 0248YE 0278YE 0298YE 0308YE 0338YE 0408YE 0468YE 0498YE LENGTH 116.1 116.1...

  • Page 47: Electrical Data

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 ELECTRICAL DATA TABLE 8 - MICRO PANEL POWER SUPPLY OVER CURRENT PROTECTION, UNIT CONTROL SEE NOTE B MODEL TYPE NF DISC SW VOLTAGE POWER NOTE A MODELS w/o 115-1-60/50 30 A / 240V CONTROL 380/415-1-60 30A / 415V...

  • Page 48: Table 10 - Unit Electrical Data

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 ELECTRICAL DATA (CONT’D) TABLE 10 - UNIT ELECTRICAL DATA OVERALL UNIT DUAL POINT ELECTRICAL DATA SINGLE POINT ELECTRICAL DATA SYSTEM # 1 SYSTEM # 2 DUAL VOLT DUAL DUAL DUAL DUAL MODEL DUAL...

  • Page 49: Table 11 - Lug Sizing

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 Lug Sizing TABLE 11 - LUG SIZING Non-Fuse Disc Sw. Circuit Breaker Terminal Block MODEL Rating Size Rating Size S6-600 S6: (2) 250kcmil - 500kcmil S5-400 S5: (2) 3/0 - 250kcmil (4) 4AWG - 500kcmil S6-600 S6: (2) 250kcmil - 500kcmil...
  • Page 50 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 NOTES: 1. Minimum Circuit Ampacity (MCA) is based on breakers must be used. Maximum HACR circuit 125% of the rated load amps for the largest mo- breaker rating is based on 225% of the rated load tor plus 100% of the rated load amps for all other amps for the largest motor plus 100% of the rated loads included in the circuit, per N.E.C.
  • Page 51 PUMP CONTACTOR PART STANDARD YORK ACCESSORIES - KP (INCLUDING COIL SUPPRESSOR) WIRING AND ITEMS SHOWN THUS ARE - KT RELAY TIMER NOT SUPPLIED BY YORK COMPRESSOR MOTOR ITEMS THUS ENCLOSED FORM A COM- PONENTS OR SETS OF COMPONENTS 035-21966-101 REVG JOHNSON CONTROLS...
  • Page 52 Thus, these circuits when used must be fed via the common point of isolation the voltage to these circuits is removed when the common point of isolation to the unit is opened. This common point of isolation is not supplied by YORK. The YORK voltage free contacts are rated at 100va.
  • Page 53 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 ELECTRICAL NOTES AND LEGEND (CONTINUED) Low ambient kit -FSC for fan -MF1 is only fitted on systems with less than 4 fans. Only fitted on YLUA0308. Only fitted on YLUA0298, 0308 & 0468. Input dual point circuit breaker option replaces input terminal block.

  • Page 54: Wiring Diagrams

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 WIRING DIAGRAMS ELEMENTARY WIRING DIAGRAMS 035-21583-101 REV D FIGURE 11 - ELEMENTARY WIRING DIAGRAM JOHNSON CONTROLS...
  • Page 55 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 56: Figure 12 - Elementary Wiring Diagram

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 035-21583-102 REVD FIGURE 12 - ELEMENTARY WIRING DIAGRAM JOHNSON CONTROLS...
  • Page 57 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 58: Figure 13 - Elementary Wiring Diagram

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 FIGURE 13 - ELEMENTARY WIRING DIAGRAM JOHNSON CONTROLS...
  • Page 59 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 60: Figure 14 - Elementary Wiring Diagram

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 035-21589-107 REV A FIGURE 14 - ELEMENTARY WIRING DIAGRAM JOHNSON CONTROLS...
  • Page 61 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 62: Figure 15 - Elementary Wiring Diagram

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 035-21589-106 REVE FIGURE 15 - ELEMENTARY WIRING DIAGRAM JOHNSON CONTROLS...
  • Page 63 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 64: Figure 16 - Power Options Connection Diagram

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 POWER OPTIONS CONNECTION DIAGRAM 035-21589-103 REVB LD13234A FIGURE 16 - POWER OPTIONS CONNECTION DIAGRAM JOHNSON CONTROLS...
  • Page 65 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 LD13901 JOHNSON CONTROLS...

  • Page 66: Figure 17 - Power Panel

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 035-21589-101 REVC FIGURE 17 - POWER PANEL JOHNSON CONTROLS...
  • Page 67 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 68: Figure 18 - Single Point & Dual Point Wiring

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 035-21583-116_rev - FIGURE 18 - SINGLE POINT & DUAL POINT WIRING JOHNSON CONTROLS...
  • Page 69 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 70: Figure 19 - Wiring

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 WIRING 035-21583-106 REVA LD13238 FIGURE 19 - WIRING JOHNSON CONTROLS...
  • Page 71 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 LD13239 JOHNSON CONTROLS...

  • Page 72: Figure 20 - Micro Panel Connections

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 MICRO PANEL CONNECTIONS 035-21589-102 REVD FIGURE 20 - MICRO PANEL CONNECTIONS JOHNSON CONTROLS...
  • Page 73 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 74: Figure 21 - Elementary Diagram

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 035-21583-103 REV. B LD13992A FIGURE 21 - ELEMENTARY DIAGRAM JOHNSON CONTROLS...
  • Page 75 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 LD13993A JOHNSON CONTROLS...

  • Page 76: Figure 22 - Elementary Diagram

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 035-21589-105 REVA FIGURE 22 - ELEMENTARY DIAGRAM JOHNSON CONTROLS...
  • Page 77 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 JOHNSON CONTROLS...

  • Page 78: Dimensions (English)

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 DIMENSIONS (ENGLISH) DIMENSIONS – YLUA0248 TO 0498 (ENGLISH) Dimensions inches unless otherwise specified. CONNECTION SYSTEM 1 SYSTEM 2 LENGTH WIDTH HEIGHT SIZES DIMENSIONS DIMENSIONS MODEL SUCTION LIQUID SUCTION LIQUID SUCTION LIQUID IN 1/2 OUT 1/2...
  • Page 79 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 DIMENSIONS – YLUA0308 TO 0408 (ENGLISH) 5/8 in. dia. mounting holes (typ) Top view L1-OUT S1-IN L2-OUT S2-IN Front view Side view LD19671a CONNECTION SYSTEM 1 SYSTEM 2 LENGTH WIDTH HEIGHT SIZES DIMENSIONS DIMENSIONS...
  • Page 80 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 DIMENSIONS – YLUA0468 TO 0498 (ENGLISH) CONNECTION SYSTEM 1 SYSTEM 2 LENGTH WIDTH HEIGHT SIZES DIMENSIONS DIMENSIONS MODEL SUCTION LIQUID SUCTION LIQUID SUCTION LIQUID IN 1/2 OUT 1/2 YLUA0468YE 187.5 88.3 95.3 89.7 43.9...

  • Page 81: Clearances

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 CLEARANCES (2 m) (1.3 m) LD13243 NOTES: 1. No obstructions allowed above the unit. 2. Only one adjacent wall may be higher than the unit. 3. Adjacent units should be 10 feet (3 Meters) apart. FIGURE 23 - UNIT CLEARANCES –...

  • Page 82: Weight Distribution And Isolator Mounting Positions

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 WEIGHT DISTRIBUTION AND ISOLATOR MOUNTING POSITIONS GENERAL Whenever the isolator option is ordered, the isolators Weights of specific chiller models vary significantly as will be shipped loose with the chiller. Packed with options are added.

  • Page 83: Isolator Information

    FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 ISOLATOR INFORMATION ONE INCH DEFLECTION SPRING ISOLATOR CROSS-REFERENCE 5/8" Ø1/2" H" C" T" B" L" D" W" LD13759A MOUNT DIMENSION DATA (INCHES) TYPE 7-3/4 6-1/2 4-3/4 5-5/8 10-1/2 9-1/4 7-3/4 9/16 RATED CAPACITY (FOR UNITS WITH ALL LOAD POINTS LESS THAN 1785 LBS (810 KG)
  • Page 84 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 One Inch Deflection Spring Isolators Installation Instructions 1. Read instructions in their entirety before begin- 6. The adjustment process can only begin after the ning installation. equipment or machine is at its full operating weight.
  • Page 85 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 TWO INCH DEFLECTION SEISMIC ISOLATOR CROSS-REFERENCE Y2RS 1-1/8" 5" 5/8" 2-3/4" 2-3/4" 12" 3/8" GAP 5/8-11UNC Ø3/4" TYP. (4) TYP.(4) 3/4" 7/8" 1/2" LIMIT STOP and 8-3/8" OPER. HEIGHT 12-1/4" 14"...
  • Page 86 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 SEISMIC ISOLATOR INSTALLATION AND ADJUSTMENT 1. Read instructions in their entirety before begin- equipment or bracket to the top plate (“A”) of iso- ning installation. lator with a minimum 3/8 fillet welds 2” long @ 3”...
  • Page 87 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 DURULENE ISOLATOR CROSS-REFERENCE RD-Style Isolators MOLDED DURULENE ø D THRU TYP 2 PLACES Notes: 1. All dimensions are inches, interpreted per ANSI Y14. 2. See the following page for installation instructions. 3.
  • Page 88 FORM 150.73-NM2 SECTION 5 – TECHNICAL DATA ISSUE DATE: 09/07/2020 INSTALLATION OF DURULENE VIBRATION ISOLATORS 1. Read instructions in their entirety before begin- 4. Bolt or anchor all isolators to supporting structure ning installation. utilizing base thru holes (“B”). 2. Isolators are shipped fully assembled and are to be 5.

  • Page 89: Section 6 - Commissioning

    SECTION 6 – COMMISSIONING COMMISSIONING Compressor Oil To add oil to a circuit - connect a YORK hand oil pump Commissioning of this unit should only be carried out by Johnson Controls Au- (Part No. 470-10654-000) to the 1/4” oil charging thorized personnel.

  • Page 90: Preparation - Power On

    FORM 150.73-NM2 SECTION 6 – COMMISSIONING ISSUE DATE: 09/07/2020 PREPARATION – POWER ON Switch Settings Assure the condensing unit OFF/ON UNIT switch at Perform the commissioning using the de- the bottom of the keypad is OFF. Place the optional tailed checks outlined in the EQUIPMENT circuit breaker handle on the panel door to ON.
  • Page 91 FORM 150.73-NM2 SECTION 6 – COMMISSIONING ISSUE DATE: 09/07/2020 NEW RELEASE Form 150.73-CL2 (1012) YLUA INSTALLATION AND START-UP CHECKLIST CUSTOMER: _________________________________ JOB NAME: _________________________________ ADDRESS: __________________________________ LOCATION: _________________________________ PHONE: _____________________________________ CUSTOMER ORDER NO: ______________________ JCI TEL NO: ____________________ JCI ORDER NO: ________________ JCI CONTRACT NO: ____________ CHILLER MODEL NO: ____________________________ UNIT SERIAL NO: ___________________________ ___________...
  • Page 92 FORM 150.73-NM2 FORM 150.73-CL2 SECTION 6 – COMMISSIONING ISSUE DATE: 09/07/2020 ISSUE DATE: 10/29/2012 3. Program/verify the Cooling Setpoints, Program 4. Put the unit into Service Mode (as described Setpoints, and unit Options. Record the values under the Control Service and Troubleshooting below.
  • Page 93 P.O. Box 1592, York, Pennsylvania USA 17405-1592 800-861-1001 Subject to change without notice. Printed in USA Copyright © by Johnson Controls 2012 www.johnsoncontrols.com...
  • Page 94 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 95: Section 7 - Unit Controls

    INTRODUCTION MICROPROCESSOR BOARD The Microprocessor Board is the controller and deci- The YORK MicroComputer Control Center is a micro- processor based control system designed to provide the sion maker in the control panel. System inputs such as pressure transducers and temperature sensors are entire control for the condensing unit.

  • Page 96: Unit Switch

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 UNIT SWITCH BATTERY BACK-UP A unit ON/OFF switch is just underneath the keypad. The Microprocessor Board contains a Real Time Clock This switch allows the operator to turn the entire unit integrated circuit chip with an internal battery backup.

  • Page 97: Status Key

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 STATUS KEY 00066VIP UNIT STATUS F L O W S W I T C H / R E M S T O P Pressing the STATUS key will enable the operator to R U N P E R M determine current unit operating status.
  • Page 98 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 tion pressure drops to within 15% above the suction S Y S T I M E R pressure cutout. On a standard system programmed S Y S T I M E R for 80 PSIG/5.52 Bar suction pressure cutout, the mi- cro would inhibit loading of the affected system with The anti-recycle timer message shows the amount of...
  • Page 99 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 tem to be shut down. Unit safeties are faults that cause This cutout is completely ignored for the first 30 sec- all running compressors to be shut down. Following onds of system run time to avoid nuisance shutdowns, are display messages and explanations.
  • Page 100 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 Whenever the motor protector or discharge sensor start is allowed after the unit is fully powered again and shuts down a compressor and the system, the inter- the anti-recycle timers have finished counting down. nal compressor contacts will open for a period of 30 U N I T F A U L T :...

  • Page 101: Table 12 - Status Key Messages Quick Reference List

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 STATUS KEY MESSAGES TABLE 12 - STATUS KEY MESSAGES QUICK REFERENCE LIST STATUS KEY MESSAGES General Messages Fault Messages System Safeties Unit Safeties Unit Warnings Unit Switch Off Shutdown Remote Controlled System X High Disch Pressure Low Ambient Temp Low Battery...

  • Page 102: Display/Print Keys

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 DISPLAY/PRINT KEYS 00067VIP The Display/Print keys allow the user to retrieve sys- able under the Oper Data key in the order that they are tem and unit information that is useful for monitoring displayed.
  • Page 103 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 S Y S 7 2 . 1 P S I G L O A D T I M E R S E C = 2 2 7 . 0 P S I G U N L O A D T I M E R S E C...
  • Page 104 The second message indicates the system run time in days – hours – minutes – seconds. Please note that this ISN – YORK Talk via ISN allows remote load is not accumulated run time but pertains only to the limiting and temperature reset through an ISN current system cycle.

  • Page 105: Table 13 - Operation Data

    System 2 Discharge and Suction Pressure Operating Data printout is shown below. (Note: Not all values are printed for all models.) *System X Accumulated Hours *System X Accumulated Starts YORK INTERNATIONAL CORPORATION MILLENNIUM CONDENSING UNIT Load and Unload Timers UNIT STATUS 2:04PM 01 MAR 09...
  • Page 106 Printer Installation information. here. The difference is that the Daily Schedule is not printed in the history print and the header will be as follows. YORK INTERNATIONAL CORPORATION MILLENNIUM CONDENSING UNIT SAFETY SHUTDOWN NUMBER 1 SHUTDOWN @ 3:56PM...
  • Page 107 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 History Displays L O C A L / R E M O T E M O D E The HISTORY key gives the user access to many unit X X X X X X X X X and system operating parameters at the time of a unit Displays Local or Remote control selection.
  • Page 108 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 A M B I E N T A I R T E M P L O W A M B I E N T T E M P X X X . X °...
  • Page 109 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 Further explanation of the above displays is cov- S Y S S U C T X X X . X ° F ered under the STATUS, OPER DATA, COOLING S A T S U C T X X X .

  • Page 110: Entry Keys

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 ENTRY KEYS 00068VIP The Entry Keys allows the user to view, change pro- Enter/adv Key grammed values. The ENTRY keys consist of an ↑ (UP) The ENTER/ADV key must be pushed after any change arrow key, ↓...

  • Page 111: Setpoints Keys

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 SETPOINTS KEYS 00069VIP Programming of the cooling setpoints, daily schedule, Following are the four possible messages that can be and safeties is accomplished by using the keys located displayed after pressing the COOLING SETPOINT under the SETPOINTS section.
  • Page 112 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 cooling setpoint will be determined by a remote device The setpoint and range are programmed with the UP such as an ISN control. The message also indicates that arrow. DOWN arrow, and ENTER/ADV key as de- the control point is based on Discharge Air Tempera- scribed in the previous setpoint message.
  • Page 113 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 As with the other setpoints, the Up Arrow and Down After SUN (Sunday) schedule appears on the display Arrow keys are used to change the Temp Reset value. a subsequent press of the SCHEDULE/ADVANCE After using the UP and DOWN ARROWS to adjust DAY key will display the Holiday schedule.
  • Page 114 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 software shutdown that acts as a backup for the me- F A N C O N T R O L chanical high pressure switch located in the refriger- P R E S S U R E = X X X P S I G ant circuit.
  • Page 115 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 A single system condensing unit MUST 460VAC System Trip Volts have a jumper between terminals 13 - For individual system high current trip programming 17 on terminal block XTBC1. If the on 460VAC units: jumper is not installed, which is the •...

  • Page 116: Table 14 - Cooling Setpoints Programmable Limits And Defaults

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 TABLE 14 - COOLING SETPOINTS PROGRAMMABLE LIMITS AND DEFAULTS SETPOINT VALUE LOW LIMIT HIGH LIMIT DEFAULT 45.0 °F 70.0°F 44.0°F Discharge Air Temp. Setpoint 7.2°C 21.1°C 12.7°C 3.0°F 10.0°F 5.0°F Discharge Air Temp.

  • Page 117: Figure 24 - Setpoints Quick Reference List

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 OPER DATA QUICK REFERENCE LIST The following provides a quick reference of the set- points list for the Setpoints Keys. SETPOINTS KEYS Cooling Setpoints Key Schedule/ Program Mode (press key to adv.) Advance Day Key (press enter to adv.) Local/Remote Discharge...

  • Page 118: Unit Keys

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 UNIT KEYS OPTIONS CLOCK 00070VIP OPTIONS KEY S Y S S W I T C H O F F There are many user programmable options under the S Y S S W I T C H O F F OPTIONS key.
  • Page 119 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 Option 4 – Local/Remote Control Type Option 7 – Lead/Lag Type (two system units only) L O C A L R E M O T E M O D E L L E A D / L A G C O N T R O L L O C A L...
  • Page 120 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 Option 9 – Manual Override Mode P O W E R F A I L R E S T A R T M A N U A L M A N U A L O V E R R I D E M O D E D I S A B L E D...
  • Page 121 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 Option 15 – Expansion Valve Type Option 17 – Remote Temperature Reset R E M O T E T E M P R E S E T E X P A N S I O N V A L V E T Y P E I N P U T...
  • Page 122 FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 CLOCK The CLOCK display shows the current day, time, and The line under the F is the cursor. If the day is correct, date. Pressing the CLOCK key will show the current press the ENTER/ADV key.

  • Page 123: Figure 25 - Unit Keys Programming Quick Reference List

    FORM 150.73-NM2 SECTION 7 – UNIT CONTROLS ISSUE DATE: 09/07/2020 Options Key Expansion Valve Type (Press Options Key (Thermoplastic or Electric) to Adv.) (Programmed Under Service Display Language Mode, Viewable Only) Must be Programmed for Thermostatic System Switches On/Off Hot Gas Bypass Type Flash Card Update Ambient Control (Standard or Low)
  • Page 124 FORM 150.73-NM2 ISSUE DATE: 09/07/2020 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 125: Section 8 - Unit Operation

    FORM 150.73-NM2 ISSUE DATE: 09/07/2020 SECTION 8 – UNIT OPERATION CAPACITY CONTROL DISCHARGE PRESSURE LIMIT CONTROLS To initiate the start sequence of the unit, all run permis- The discharge pressure limit controls unload a sys- sive inputs must be satisfied (air proving/remote start/ tem before it reaches a safety limit due to high load stop switch), and no unit or system faults exist.

  • Page 126: Figure 26 - Discharge Air Temperature Control

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 20 sec. 30 sec. 60 sec. control range 60 sec. unloading unloading unloading (no compressor staging) loading 51.5°F 52.5°F 53.0°F 55.0°F 57.0° (10.8°C) (11.4°C) (11.7°C) (12.8°C) (13.9°C) Low Limit Setpoint High limit Discharge Air Temperature Control –...

  • Page 127: Suction Pressure Control

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 SUCTION PRESSURE CONTROL If the suction pressure falls below the Setpoint Low The setpoint in Suction Pressure Control is the suction Limit, unloading (compressors cycling off) occurs at pressures each individual system on the condensing a rate of 30 seconds per system.

  • Page 128: System Lead/Lag

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 SYSTEM LEAD/LAG ANTI-COINCIDENCE TIMER This timer is not present on single-system units. Two (Discharge Air Temp Control Only) Lead/lag between systems may be selected to help timing controls are present in software to assure com- equalize average run hours between systems on con- pressors within a circuit or between systems, do not densing units with 2 refrigerant systems.

  • Page 129: Figure 28 - Ylua0248 - Ylua0298 Fan Location (Typical)

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 CONDENSER FAN CONTROL - YLUA0248 – YLUA0298 TABLE 18 - YLUA0248 – YLUA0298 CONDENSER FAN CONTROL USING OUTDOOR AMBIENT TEMPERATURE AND DISCHARGE PRESSURE (Discharge pressure controls not function unless the optional discharge pressure transducer is installed) I/O BOARD CONTACTOR FAN #...

  • Page 130: Table 20 - Ylua0248 - Ylua0298 Low Ambient Condenser Fan Control - Discharge Pressure Control

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 CONDENSER FAN CONTROL - YLUA0248 – YLUA0298 TABLE 20 - YLUA0248 – YLUA0298 LOW AMBIENT CONDENSER FAN CONTROL – DISCHARGE PRESSURE CONTROL I/O BOARD CONTACTOR FAN # OUTPUT FAN STAGE SYS 1 SYS 2 SYS 1...

  • Page 131: Figure 29 - Ylua0308 - Ylua0408 Fan Location

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 CONDENSER FAN CONTROL - YLUA0308 – YLUA0408 Condenser Fan Control (YLUA0308 – YLUA0408 CONDENSING UNITS) The following Figures and Tables outline fan sequenc- Condenser fan control on models YLUA0308 – YLUA0408 will always be by discharge pressure.

  • Page 132: Condenser Fan Control

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 CONDENSER FAN CONTROL - YLUA0468 – YLUA0498 CONDENSER FAN CONTROL (YLUA0468 – YLUA0498 UNITS) The following Figure and Table outlines fan sequenc- Condenser fan control on models YLUA0468 – ing for the various models. These models are equipped YLUA0498 will always be by discharge pressure.

  • Page 133: Load Limiting

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 Simultaneous operation of Remote Load LOAD LIMITING Limiting and EMS-PWM Temperature Load Limiting is a feature that prevents the unit from Reset (described on following pages) loading beyond the desired value. 2 and 4 compres- cannot occur.

  • Page 134: Bas/Ems Discharge Air Temperature Reset Using A Voltage Or Current Signal

    FORM 150.73-NM2 SECTION 8 – UNIT OPERATION ISSUE DATE: 09/07/2020 BAS/EMS DISCHARGE AIR TEMPERATURE RESET USING A VOLTAGE OR CURRENT SIGNAL If a 4-20mA signal is supplied, it is applied to termi- nals A+ and A- and jumper JP1 on the I/O board The Remote Reset Option allows the Control Center of the must be installed between pin 1 and 2.

  • Page 135: Section 9 - Service And Troubleshooting

    FORM 150.73-NM2 ISSUE DATE: 09/07/2020 SECTION 9 – SERVICE AND TROUBLESHOOTING CLEARING HISTORY BUFFERS SYS 1 COMP 1 STATUS TB7-2 IS: The history buffers may be cleared by pressing the SYS 1 LLSV STATUS TB7-3 IS: HISTORY key and then repeatedly pressing the UP SYS 1 COMP 2 STATUS TB7-4 IS: arrow key until you scroll past the last history buffer SYS 1 COMP 3 STATUS TB7-5 IS:...

  • Page 136: Service Mode - Condensing Unit Configuration

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 SERVICE MODE – CONDENSING UNIT SERVICE MODE – ANALOG AND DIGITAL CONFIGURATION INPUTS After the Outputs are displayed, the next group of dis- After entering Service Mode (PROGRAM ↑↑ ↓↓), plays relate to unit configuration and start/hour coun- all digital and analog inputs to the microboard can be ters.

  • Page 137: Control Inputs/Outputs

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 The digital inputs will display the input connection and TABLE 25 - I/O DIGITAL OUTPUTS ON/OFF status such as: TB7-2 SYS 1 Compressor 1 TB7-3 SYS 1 Liquid Line Solenoid Valve F L O W S W / R E M S T A R T...

  • Page 138: Figure 31 - Microboard Layout

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 I/O BOARD BOARD TB10 LD12721 FIGURE 31 - MICROBOARD LAYOUT JOHNSON CONTROLS...

  • Page 139: Checking Inputs And Outputs

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 CHECKING INPUTS AND OUTPUTS Digital Inputs TABLE 28 - OUTDOOR AIR SENSOR Refer to the unit wiring diagram. All digital inputs are TEMPERATURE/VOLTAGE/ connected to J13-1 of the I/O board. The term “digital” CORRELATION refers to two states –...

  • Page 140: Table 29 - Discharge Air Temp. Sensor Temperature/Voltage/Resistance Correlation

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 Discharge Air Temperature Sensor TABLE 29 - DISCHARGE AIR TEMP. SENSOR TEMPERATURE/VOLTAGE/ J6-5 = +5 VDC regulated supply to sensor. RESISTANCE CORRELATION J6-8 = VDC input signal to the microboard. TEMP °F VOLTAGE RESISTANCE TEMP °C...

  • Page 141: Table 30 - Pressure Transducers

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 System 2 Discharge Transducer TABLE 30 - PRESSURE TRANSDUCERS J9-6 = +5VDC regulated supply to transducer. 0-400 PSIG SUCTION 0-600 PSIG DISCHARGE J9-11 = VDC input signal to the microboard. See the PRESSURE TRANS- PRESSURE TRANS- formula above for voltage readings that correspond to...

  • Page 142: Figure 32 - I/O Board Relay Contact Architecture

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 Digital Outputs SYS 1 TB7-2 COMP 1 Refer to the unit wiring diagram and Figure 32 on page TB7-3 LLSV 1 142. The digital outputs are located on TB7, TB8, and SYS 1 TB9 and TB-10 of the microboard.

  • Page 143: Optional Printer Installation

    “HISTORY” key. (International Orders Only) The part number for the printer that is packaged spe- cifically for YORK is P/N 950915576. The cable to connect the printer can either be locally assembled from the parts listed, or ordered directly from WEIGH- TRONIX under part number 287-040018.

  • Page 144: Troubleshooting

    FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 TROUBLESHOOTING TABLE 31 - TROUBLESHOOTING PROBLEM CAUSE SOLUTION 1. No 115VAC to 24 VAC Trans- 1a. Check wiring and fuse 1FU. former. 1b. Check wiring emergency stop contacts 5 to L of XTBC2 Terminal Block.
  • Page 145 FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 TROUBLESHOOTING (CONT’D) PROBLEM CAUSE SOLUTION 1. Improper suction pressure cut- 1. Adjust per recommended set- outs adjustments. tings. 2. Low refrigerant charge. 2. Repair leak if necessary and add refrigerant. 3.
  • Page 146 FORM 150.73-NM2 SECTION 9 – SERVICE AND TROUBLESHOOTING ISSUE DATE: 09/07/2020 TROUBLESHOOTING (CONT’D) PROBLEM CAUSE SOLUTION 1. Demand not great enough. 1. No problem. Consult “Instal- lation” Manual to aid in under- standing compressor operation and capacity control. 2. Compare the display with a 2.

  • Page 147: Section 10 - Maintenance

    Exercise care when cleaning the coil so not cover other related system components which may that the coil fins are not damaged. or may not be furnished by YORK. System compo- nents should be maintained according to the individual manufacture’s recommendations as their operation will affect the operation of the unit.

  • Page 148: Isn Control

    FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 ISN CONTROL Received Data (Control Data) TABLE 33 - ISN TRANSMITTED DATA The unit receives 8 data values from the ISN. The first CHARACTER TYPE DATA PAGE 4 are analog values and the last 4 are digital values. These 8 data values are used as control parameters Leaving Chilled 8-11...
  • Page 149 FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 ISN CONTROL (CON’T) TABLE 33 – ISN TRANSMITTED DATA (CONT’D) CHARACTER TYPE DATA CHARACTER TYPE DATA PAGE PAGE Evaporator Heater Coded ---- Digital Status SYS 1 Condenser Coded Evaporator Pump Fan Stage Digital Status Coded...

  • Page 150: Table 34 - Isn Operational And Fault Codes

    FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 ISN CONTROL (CON’T) TABLE 34 - ISN OPERATIONAL AND FAULT CODES P56/58 OPERATIONAL CODE P57/59 FAULT CODE NO ABNORMAL CONDITION NO FAULT UNIT SWITCH OFF VAC UNDER VOLTAGE SYSTEM SWITCH OFF LOW AMBIENT TEMPERATURE LOCK-OUT HIGH AMBIENT TEMPERATURE...

  • Page 151: Bacnet And Modbus Data Communication

    FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 BACNET AND MODBUS DATA COMMUNICATION In some cases, BACnet parameters may need to be Data can be read and in some cases modified using a se- modified. Modification is accomplished by pressing rial communication BACnet or Modbus network con- the PROGRAM, DOWN ARROW, DOWN ARROW, nection.

  • Page 152: Table 35 - Minimum, Maximum And Default Values

    FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 The table below shows the minimum, maximum, and default values. TABLE 35 - MINIMUM, MAXIMUM AND DEFAULT VALUES DESCRIPTION MINIMUM MAXIMUM DEFAULT DE MODIFIER ADDRESS 41943 DE MODIFIER OFFSET P1 BAUD RATE 1200 76800 4800...

  • Page 153: Table 37 - Serial Communication Analog Value Data

    FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 Unit data that can be read and modified using specific Modbus Register Addresses; and the data associated with the addresses, is outlined in the following description: SERIAL COMMUNICATION ANALOG VALUE DATA This data can be read and modified using a BACnet or Modbus network connection.
  • Page 154 FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 Continued from previous page BACNET NAME ANALOG INPUT DESCRIPTION AC_TIMER ANTI-COINCIDENT TIMER S2_SUCT_TEMP SYS 2 SUCTION TEMPERATURE (EEV AND COND UNIT ONLY) S2_RUN_TIME SYS 2 RUN TIME (SECONDS) S2_SUCT_PR SYS 2 SUCTION PRESSURE S2_DSCH_PR SYS 2 DISCHARGE PRESSURE S2_CIR_TEMP...

  • Page 155: Table 40 - Serial Communication Binary Input Data

    FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 SERIAL COMMUNICATION BINARY INPUT DATA This data can be read using a BACnet or Modbus network connection and can NOT be modified using this connec- tion. The Modbus Register Address for these points is 1281 + BI #. TABLE 40 - SERIAL COMMUNICATION BINARY INPUT DATA BACNET NAME BINARY INPUT DESCRIPTION...
  • Page 156 FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 TEMPERATURE CONVERSION CHART TEMPERATURE CONVERSION CHART Temperature Conversion Chart - Temperature Conversion Chart - Actual Temperatures Differential Temperatures ° F ° C °C °F ° F ° C °C °F -17.8 -0.4 -15.6 -13.3...
  • Page 157 FORM 150.73-NM2 SECTION 10 – MAINTENANCE ISSUE DATE: 09/07/2020 R410A PRESSURE TEMPERATURE CHART PSIG TEMP ˚F PSIG TEMP ˚F JOHNSON CONTROLS...
  • Page 158 5000 Renaissance Drive, New Freedom, Pennsylvania USA 17349 1-800-524-1330 Subject to change without notice. Printed in USA Copyright © by Johnson Controls 2020 www.johnsoncontrols.com ALL RIGHTS RESERVED Form 150.73-NM2 (920) Issue Date: September 07, 2020 Supersedes: 150.73-NM2 (609)

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