Johnson Controls DU-20 Manuals

Manuals and User Guides for Johnson Controls DU-20. We have 1 Johnson Controls DU-20 manual available for free PDF download: Installation Manual

Johnson Controls DU-20 Installation Manual (68 pages)

GAS/ELECTRIC SINGLE PACKAGE AIR CONDITIONERS

Brand: Johnson Controls | Category: Air Conditioner | Size: 0 MB

Table of Contents
2
General
4
Safety Considerations
4
Inspection
4
Reference
4
Renewal Parts
5
Approvals
5
Product Nomenclature
6
Installation
7
Installation Safety Information
7
Limitations
7
Location
8
Unit Application Data
8
Rigging and Handling
9
Clearances
9
Typical Rigging
9
Center of Gravity
9
Ductwork
10
Fixed Outdoor Air Intake Damper
10
Condensate Drain
11
Compressors
11
Filters
11
Service Access
11
Fixed Outdoor Air Damper
11
Recommended Drain Piping
11
Typical Field Wiring
12
Thermostat
13
Space Sensor
13
Power and Control Wiring
13
Optional Electric Heat
13
Control Wire Sizes
13
Optional Gas Heat
14
Gas Piping
14
Electric Heat Application Data
14
Gas Heat Application Data
14
Pipe Sizing
14
Gas Connection
15
L.p. Units, Tanks and Piping
16
Vent and Combustion Air Hoods
16
External Supply Connection External Shut-Off
16
Bottom Supply Connection External Shut-Off
16
Optional Economizer/Motorized Damper Rain Hood
17
Optional Power Exhaust/Barometric Relief Damper Rain Hood
17
Optional Economizer and Power Exhaust Damper Set Point Adjustments and Information
17
Minimum Position Adjustment
17
Enthalpy Set Point Adjustment
17
Power Exhaust Damper Setpoint
17
Vent and Combustion Air Hood
17
Indoor Air Quality Aq
18
Optional Bas-Ready Economizer Power Exhaust Damper Set Point Adjustment
18
Optional Variable Air Volume (Vav)
18
Duct Static Pressure Transducer
18
Vav Control Board
18
Factory-Installed Vfd
19
Manual Bypass
20
Bas-Ready Vfd
20
Vfd-Ready' for Customer-Installation
21
Optional Hot Gas Bypass (Hgbp)
21
Enthalpy Setpoint Adjustment
22
Honeywell Economizer Control
23
Four and Six Point Loads
23
Center of Gravity
24
Du -15, -18, -20 & -25 Four and Six Point Load Weight Distribution
24
Physical Data
25
Operating Weights (Lbs.)
25
Supply Fan Vfd Weights, in Lbs
25
Du-15, -18 & -20 Electrical Data Without Powered Convenience Outlet
26
Outlet
27
Du-15, -18 & -20 Electrical Data with Powered Convenience Outlet
28
Electrical Data Standard Motor with Powered Convenience Outlet
29
Electrical Data High Static Motor with Powered Convenience Outlet
29
Front View Dimensions
30
Rear View Dimensions
31
Unit Clearances and Rain Hood Dimensions
32
Cfm, Static Pressure, and Power - Altitude and Temperature Corrections
33
Altitude Correction Factors
33
Altitude/Temperature Conversion Factor
34
Supply Air Blower Performance (15 Ton) - Cooling Only 180 Mbh - Bottom Duct Connections
35
Supply Air Blower Performance (17.5 Ton) - Cooling Only 210 Mbh - Bottom Duct Connections
36
Supply Air Blower Performance (20 Ton) - Cooling Only 240 Mbh - Bottom Duct Connections
37
Supply Air Blower Performance (15 Ton) - Gas Heat 180 Mbh - Bottom Duct Connections
38
Supply Air Blower Performance (17.5 Ton) - Gas Heat 210 Mbh - Bottom Duct Connections
39
Supply Air Blower Performance (20 Ton) - Gas Heat 240 Mbh - Bottom Duct Connections
40
Supply Air Blower Performance (25 Ton) - Gas Heat 300 Mbh - Bottom Duct Connections
41
Static Resistances
42
Power Exhaust Performance
42
Blower Motor and Drive Data
42
Phasing
43
Checking Supply Air Cfm
43
Belt Adjustment
43
Air Balance
44
Pressure Drop Across a Dry Indoor Coil Vs Supply Air Cfm for All Unit Tonnages
44
Operation
45
Sequence of Operations Overview
45
Cooling Sequence of Operation
45
Continuous Blower
45
Intermittent Blower
45
Optional Vav Blower Operation
45
No Outdoor Air Options
45
Economizer with Single Enthalpy Sensor
45
Economizer with Dual Enthalpy Sensors
46
Economizer (Single or Dual Enthalpy) with Power Exhaust
46
Economizer with Optional Vav or Intelli-Comfort™ Control
46
Economizer with Optional Vav Blower with Power Exhaust
47
Economizer with Optional Intelli-Comfort™ with Power Exhaust
47
Motorized Outdoor Air Dampers
47
Cooling Operation Errors
47
High-Pressure Limit Switch
47
Low-Pressure Limit Switch
47
Freezestat
47
Low Ambient Cooling
48
Safety Controls
48
Compressor Protection
48
Flash Codes
48
Reset
48
Electric Heating Sequence of Operations
48
Heating Operation Errors
49
Temperature Limit
49
Safety Controls
49
Flash Codes
49
Reset
49
Heat Anticipator Setpoints
49
Limit Control Setting
49
Gas Heating Sequence of Operations
50
Electric Heat Anticipator Setpoints
50
Gas Heating Operation Errors
51
Temperature Limit
51
Gas Valve
51
Safety Controls
51
Gas Valve Piping
51
Flash Codes
52
Resets
52
Heat Anticipator Setpoints
52
Start-Up (Cooling)
52
Prestart Check List
52
Gas Valve and Controls
52
Limit Control Setting
52
Gas Heat Anticipator Setpoints
52
Operating Instructions
53
Post Start Check List
53
Shut down
53
Start-Up (Gas Heat)
53
Pre-Start Check List
53
To Light Pilot and Main Burners
53
To Shut down
53
Post-Start Check List (Gas)
53
Manifold Gas Pressure Adjustment
54
Pilot Checkout
54
Burner Instructions
54
Typical Gas Valves
54
Proper Flame Adjustment
54
Typical Flame Appearance
54
Burner Air Shutter Adjustment
55
Checking Gas Input
55
Natural Gas
55
Adjustment of Temperature Rise
55
Belt Drive Blower
55
Gas Rate - Cubic Feet Per Hour
55
Troubleshooting
56
Cooling Troubleshooting Guide
56
Gas Heat Troubleshooting Guide
60
Unit Control Board Flash Codes
64
Unit Control Board Option Setup
65
Option Byte Setup
65
Heat Delay Setup
65
Unit Control Board
65
Codes
66
Heat Delay
66
Vav Control Board Flash Codes
66

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