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Sun Select YV28
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York Sun Select YV28 - Page 89
110 pages
Manual
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5.
For modulating furnaces, when
commissioning is complete return the System
Selection bottom pin jumper to NORM
OPERA
TION on the Modulating Furnace
Control.
Installation Manual: YORK
®
Sun
™
Select YV28 to YV50
89
Johnson Controls Ducted Systems
88
90
Table of Contents
Main Page
Table of Contents
3
General
5
Safety Considerations
5
Inspection
6
Reference
6
Renewal Parts
6
Approvals
6
Nomenclature
8
Installation
9
Installation Safety Information
9
Limitations
9
Requirements in the U.S.A
9
Requirements in Canada
9
Unit Components
11
Unit Limitations
12
Location
12
Clearances
12
Rigging and Handling
13
Weights and Dimensions
14
Rain Hood Dimensions
16
Economizer Outdoor Air Hood Assembly
16
Manual Damper Outdoor Air Hood Assembly
18
Exhaust Air Hood Assembly
20
Pressure Line Connections for VAV
22
Utilities Entry
24
Condensate Drain Line Installation
24
Accessory Weights
26
Roof Curbs
27
Ductwork
29
Placing the Equipment over a Trane Curb
29
Compressors
29
Converting between 2-In. and 4-In. Filters
30
Dirty Filter Switch Pressure Setting
31
Power and Control Wiring
31
Power Wiring Detail
32
Thermostat Wiring
33
Toolless Access Handle Installation
35
Convenience Outlet Cover Installation
36
Electrical Data
38
Constant Volume Standard Static
38
Constant Volume Medium Static
40
Constant Volume High Static
42
VFD Two-Stage Standard Static
44
VFD Two-Stage Medium Static
46
VFD Two-Stage High Static
48
VFD Four-Stage Standard Static
50
VFD Four-Stage Medium Static
52
VFD Four-Stage High Static
54
VFD Customer Supplied Standard Static
56
VFD Customer Supplied Medium Static
58
VFD Customer Supplied High Static
60
Physical Data
62
Optional Gas Heat
66
Gas Piping
66
Gas Connection
68
Propane Units, Tanks, and Piping
69
Flue Exhaust Hood
69
Economizer Sequences
71
Economizer Minimum Position
71
Free Cooling Operation
71
Dry Bulb Changeover
72
Single Enthalpy Changeover
72
Dual Enthalpy Changeover
72
Auto
72
Free Cooling Operation
72
Thermostat
72
Sensor
72
Power Exhaust
73
Setpoints
73
Inputs
73
Outputs
73
Operation
73
Modulating Power Exhaust with VFD
73
Setpoints and Related Data
73
Smart Equipment™ Economizer Board
74
Indoor Air Quality
77
Phasing
77
Blower Rotation
77
Adjusting the Belt Tension
77
Drive Selection
79
Airflow Performance
80
Air Balance
81
Checking Air Quantity
82
Supply Air Drive Adjustment
83
Operation
84
Cooling Sequence of Operation
84
Compressor Operation
84
Stage Cooling
84
Gas Heat Sequence of Operation
84
Two Stage Gas Heat Ignition Control Board Function
85
Ignition Control Board on Standby
85
Pressure Switch Proving
85
Pre-Purge
85
Ignition Trial Period
85
Flame Stabilization Period
85
Main Burner Operation
85
Post Purge
86
Lockout
86
High Temperature Limit Switch
86
Roll-Out Switch
86
Power Interruptions
86
Flame Present with Gas off
86
Welded Gas Valve Relay Response
86
Cooling Start-Up
87
Cooling Pre-Start Checklist
87
Operating the Unit
87
Post-Start Checklist
87
Gas Heat Start-Up
88
Gas Heat Pre-Start Checklist
88
Operating Instructions
88
Gas Heat Post-Start Checklist
88
Shutting down the Unit
88
Checking Gas Heat Input
90
To Determine the Rate of Gas Flow at Second Stage (Full Input)
90
To Determine the Rate of Gas Flow at First Stage (Minimum Input)
90
Manifold Gas Pressure Adjustment
91
Two Stage
91
Adjustment of Temperature Rise
91
Burners/Orifices Inspection/Servicing
92
Charging Tables
93
Smart Equipment™ Unit Control Board
96
Four-Stage Board
101
Cable Recommendations
103
Start-Up Sheet
104
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