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York VERSECON YSWD 048
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Johnson Controls York VERSECON YSWD 048 manual available for free PDF download: Installation Operation & Maintenance
Johnson Controls York VERSECON YSWD 048 Installation Operation & Maintenance (128 pages)
AIR CONDITIONING UNIT
Brand:
Johnson Controls
| Category:
Air Conditioner
| Size: 2 MB
Table of Contents
Changeability of this Document
3
Table of Contents
4
List of Tables
9
List of Figures
10
Section 1 - Introduction
11
About this Manual
11
Description of Unit
11
Nomenclature
11
Table 1 - Acronym Chart
11
Section 2 - Installation
13
Approvals
13
Limitations
13
Unit Inspection
13
Table 2 - Voltage Limitations
13
Table 3 - Operating Limitations
13
Location and Clearances
14
Rigging and Unit Handling
14
Table 4 - Access Requirements
14
Fig. 1 - Recommended Service and Maintenance Clearance
14
Table 5 - Weights
15
Factory-Supplied Plenum
17
Vibration Isolators
17
Segmented Unit Assembly
17
Remove Shipping Restraints
18
Fig. 2 - Shipping Restraint Locations
18
Table 6 - Data Table
19
Table 7 - Refrigerant Charge Data
23
Electrical Data
27
Field Power Wiring
27
Disconnect
27
Electrical Service Sizing
27
Mca
27
Mop
27
Field Control Wiring
28
Pump Start
28
Table 8 - Fan Motor Data
28
Table 9 - Compressor Motor Data
28
Fan Start
29
VAV Box Full Open
29
Phase Monitor
29
Ducting
29
Supply Air
29
Return Air
29
Ducted Return
29
Free Return
29
Water Piping
30
General
30
Condenser Connections
30
Cooling Towers
31
Water Temperature Requirements
31
Waterside Piping Arrangements
31
Condensate Drain Connections
31
Static Pressure Transducer Installation (Vav Units Only)
31
Installation Instructions
32
Mounting Instructions
32
Static Pressure Transducer Installation (Flexsys Units Only)
32
Hot Water Heat
33
Mixed Air Sensor
33
Outdoor Air Sensor
33
Return Air Sensor
33
Return, Outdoor, Supply Air, and Mixed Air Sensors
33
Specification
33
Steam Heat
33
Steam Piping
33
Supply Air Sensor
33
Electric Heat
34
Filters
34
Hot Water Piping
34
Section 3 - Start-Up
35
Crankcase Heaters
35
Pre-Startup Requirements
35
Table 10 - Setscrew Torques
35
Initial Start-Up
36
Unit Checks - Power Applied
36
Verifying Compressor Rotation
36
Leak Checking
37
Refrigerant Charge
37
Subcooling
37
Superheat (R-22)
37
Table 11 - Temperature/Pressure Chart - Refrigerant R-22
38
Section 4 - Maintenance
39
Compressors
39
Fan Bearing Lubrication
39
Filters
39
General
39
Linkages
39
Oil Analysis
39
Periodic Maintenance - Monthly
39
Recommended Lubricant for Fan Bearings
39
Table 12 - Fan Bearing - Lubrication Intervals
39
Belt Tension
40
Motor Bearing Lubrication
40
Periodic Maintenance - Three to Six Months
40
Periodic Maintenance - Yearly
40
Entire Unit Inspection
40
Sheave Alignment
40
Table 13 - Belt Tension Data
40
Fig. 3 - Sheave Alignment
40
Belts
41
Belt Replacement
41
Belt Tensioning
41
Filter Drier Replacement
41
Supply Fan
41
Fig. 4 - Belt Tensioning Gauge
41
Fan Motor
42
Fan Shaft Bearings
42
Mounting Details
42
Bearing Locking Devices
43
Condenser Coil Cleaning
43
Water Pressure Drop Tables
44
Section 5 - Sequence of Operation
47
On / off
47
Supply Fan Operation
47
Constant Volume Fan Operation
47
VAV Fan Operation
48
Communicated VFD Speed Input
48
Flexsys Dew Point Control
49
Sequence of Operation
49
Economizer Operation
49
Sequence of Operation
50
Outdoor Air Economizer
50
Waterside Economizer
50
Condenser Water Valve Operation
51
Sequence of Operation
51
Condenser Water Bypass
51
Mechanical Cooling Operation
51
Sequence of Operation
52
Coil Leaving Temperature Control (Flexsys Units)
52
Compressor Analog Output
52
Dew Point Temperature Control (Flexsys Units)
52
Return Air Temperature Control
52
Supply Air Temperature Control
52
Table 14 - Window of Operation, Compressor Staging
52
Compressor Staging
53
Lead Lag Operation
54
Four Compressor Units
54
Two Compressor Units
54
Fig. 5 - Keypad / Display
59
Table 16 - Setpoint Screen Parameters
63
Table 17 - Forced on Parameters
64
Fig. 6 - Communication Wiring
69
TABLE 18 - Bacnet MS/TP Points
70
Table 19 - N2 Points List
102
Table 20 - Definitions
107
Table 21 - Temperature Sensor Resistance
113
Table 22 - Vav Duct Static Pressure Transducer
113
Table 23 - Flexsys Duct Static Pressure Transducer
113
Table 24 - Coil Pressure Drop (Flexsys)
114
Table 25 - Refrigerant Pressure Transducers
114
Table 26 - Humidity Sensor Output
115
Fig. 7 - Main Control Board Pin Positions
118
Fig. 10 - Auxiliary Control Board
119
Fig. 8 - Auxiliary Control Board Pin Positions
119
Fig. 9 - Main Control Board
119
Table 27 - Constant Volume / Variable Air Volume Main Control Board
120
Table 28 - Constant Volume / Variable Air Volume Expansion Control Board
121
Table 29 - Flexsys Main Control Board
122
Table 30 - Flexsys Expansion Control Board
123
Fig. 11 - Elementary Control Wiring Diagram, Ywsu- All Options
124
Fig. 12 - Elementary Control Wiring Diagram, Yswu
125
Fig. 13 - Elementary Power Wiring Diagram, Yswu
126
Fig. 14 - Elementary Control Wiring Diagram, Yswu Downflow
127
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