York XT AHU - FIGURE 38 - Pressure Probe Direction; FIGURE 39

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JOHNSON CONTROLS

SECTION 2 - START-UP AND OPERATION

FORM 102.20-OM2

ISSUE DATE: 6/01/2015

TOP VIEW OF UNIT

POSITIVE PRESSURE / AIR BLOWN THROUGH HEATER

NEGATIVE PRESSURE / AIR DRAWN THROUGH HEATER

BLOWER

HEATER

AIRFLOW

PICK UP TU BE TOWARDS BLOWER

ATTACHED TO HIGH PORT OF AIRFLOW SWITCH

PICK UP TUBE TOWARDS BLOWER

ATTACHED TO LOW PORT OF AIRFLOW SWITCH

AIRFLOW

FIGURE 38 - PRESSURE PROBE DIRECTION

LD14268

HIGH PORT

LOW PORT

MOUNTING

BRACKET

FIGURE 39 - AIR FLOW SWITCH CONNECTIONS

LD14270

Main Page

Table of Contents5
Section 1 - General Information and Safety13
- Introduction13
- About this Manual13
- Warranty13
- Responsibility for Safety13
Section 2 - Start-Up and Operation15
- Before Start-Up15
- Operation50
Section 3 - Maintenance53
- General Requirements53
- TABLE 11 - Minimum / Maintenance Requirements According to ASHRAE53
- Inspect Parts54
- Fan Segment (Supply, Return or Exhaust)55
  - Removing the Fan55
  - Checking the Fan55
- Operating Adjustable Motor Base55
- Aligning Sheaves57
- Belt Replacement Tensioning and Sheave Alignment for Top Mount58
- FIGURE 48 - Alignment Using Straight Edge58
- FIGURE 49 - Alignment Using String58
- FIGURE 50 - Sheave Angular Misalignment59
- FIGURE 51 - Motor Base Lowered59
- FIGURE 52 - Sheave Angular Alignment59
- Lubrication60
- Checking Condition of Extended Lubrication Lines61
- Recommended Lubricant for Bearings61
- Proper Interval and Quantity61
- FIGURE 57 - Split Bearing (Assembled)61
- FIGURE 58 - Optional Lubrication Lines61
Lubricating the Fan Segment and Motor62
- TABLE 12 - Fan Bearing Re-Lubrication Intervals for Ball Bearing Pillow Blocks62
- TABLE 13 - Fan Bearing Lubrication Intervals for Spherical Roller Bearing Solid Pillow Blocks62
- TABLE 14 - Fan Bearing Lubrication Intervals for Spherical Roller Bearing Split Pillow Blocks62
- TABLE 15 - Fan Bearing Lubrication Intervals for Dodge ISN Bearings62
- Checking Condition of Mounting Hardware, Adjustable Motor Base and Motor63
- Checking Electrical Connections63
- FIGURE 59 - Open Drip Proof (ODP) Motor63
- FIGURE 60 - Totally Enclosed Fan Cooled (TEFC) Motor63
- Keep Motor Bearing Lubricated63
UVC Emitter Lamps64
- TABLE 16 - Motor Bearing Lubrication Intervals64
- TABLE 17 - Motor Bearing Service Conditions64
- TABLE 18 - Motor Bearing Lubrication Interval Multiplier64
- Three Types of Lamps65
Maintaining and Replacing Filter Segments65
- FIGURE 61 - UV Lamps65
- FIGURE 62 - Installing V-Mod Lamp65
- FIGURE 63 - Installing V-Ray and V-Max Grid Lamps65
- FIGURE 64 - V-Max Grid Lamps65
- FIGURE 65 - Typical Filter Types65
- Replacing the Filters66
Economizer Segment (Dampers)66
- Cleaning Procedure66
- Hardware Check66
Coil Segment Cleaning66
- Tools, Equipment and Materials66
- FIGURE 66 - Installing Angle Filters66
- FIGURE 67 - Installing Side Load Filters66
- Cleaning Procedure67
Condensate Drain Pan, Trap and Line Cleaning67
- Tools, Equipment and Materials67
- Schedule and Conditions67
- Cleaning Procedure68
- Coil Freeze Protection68
Energy Recovery Wheel68
Airxchange68
- Tools and Materials68
- Cleaning the Wheel69
- Adjusting Air Seals69
- FIGURE 68 - Rinse Segments69
- FIGURE 69 - Diameter Seal Adjustment69
- Inspect Wheel Drive Components70
Novelaire ® Technologies70
- Cleaning the Wheel70
- FIGURE 70 - Airxchange ® Energy Recovery Wheel with Bearing Support Beam Side70
- Adjusting Air Seals71
- Inspect Wheel Drive Components71
- How to Measure, Assemble and Install71
- FIGURE 71 - How to Measure71
- FIGURE 72 - Disassembly71
- FIGURE 73 - Assembly71
Thermotech72
- Cleaning the Wheel72
- Adjusting Air Seals72
- FIGURE 74 - Installation72
- FIGURE 75 - Loosen Screws before Adjusting Seals72
- Inspect Wheel Drive Components73
Innergy Tech73
- Cleaning the Wheel73
- Adjusting Air Seals73
- FIGURE 76 - ERW Seal Locations73
- Inspect Wheel Drive Components74
- FIGURE 77 - Airloop™ Labyrinth Seal Adjustment74
Econo-Disk75
- Maintenance Instructions75
P-Cone75
- Maintenance of P-Cone75
- FIGURE 78 - Plenum Fan Tap Location and Connection Illustration75
- FIGURE 79 - Maintenance Requirements76
Section 4 - Service and Repair77
- Service Tools and Equipment77
- Service Information78
- Troubleshooting78
- Pitot Tube78
- FIGURE 80 - Construction of Pitot Tube78
- FIGURE 81 - Pitot Tube78
- Inclined Manometer79
- Filter Gauge79
- U-Tube Manometer79
- FIGURE 84 - Magnehelic Filter Guage79
- FIGURE 82 - Inclined Manometer79
- FIGURE 83 - Minihelic Filter Gauge79
- Duct Pressures80
- Requesting Assistance81
- FIGURE 87 - Static Pressure Air System81
- Adjusting, Removing, and Installing Sheaves82
Section 5 - Wiring Diagrams87
FIGURE 93 - Full Voltage Starter88
Controls89
- FIGURE 94 - Full Voltage Starter with Single Point Power Connection (204195)90
- Controls91
- FIGURE 95 - Outside Air Damper Kit (Relay Installation)92
- Installing Kit (if Applicable)92
- FIGURE 96 - Solution XT Termination Chart Inside Enclosure Door93
- FIGURE 97 - Typical FPC Wiring Diagram94
- FIGURE 98 - Transformer Enclosure Wiring Detail (Shown Open)96
- FIGURE 99 - Transformer Wiring Diagram97
- FIGURE 100 - UV Control Panel Wiring (8 Amps)99
- FIGURE 101 - UV Control Panel Wiring ( Greater than 8 Amps)100
- FIGURE 102 - Gas Heat, Single Phase, 1500Va Transformer Wiring Diagram102
- FIGURE 103 - Gas Heat, Three Phase, 1000Va Transformer Wiring Diagram103
- FIGURE 104 - Gas Heat, Three Phase, 500Va Transformer Wiring Diagram104
- FIGURE 105 - Typical Wiring Diagram for Electric Heat Control Type Vermier105
- FIGURE 106 - Typical Wiring Diagram for Control Type Full SCR106
Appendix A - Start-Up Checklist107
Appendix B - Long-Term Storage111
- Temperature116
- TABLE 21 - si Metric Conversion116

York XT AHU - FIGURE 38 - Pressure Probe Direction; FIGURE 39 - Air Flow Switch Connections

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