Ingersoll-Rand Precedent D/WHC074H Manuals

Manuals and User Guides for Ingersoll-Rand Precedent D/WHC074H. We have 1 Ingersoll-Rand Precedent D/WHC074H manual available for free PDF download: Installation, Operation And Maintenance Manual

Ingersoll-Rand Precedent D/WHC074H Installation, Operation And Maintenance Manual (68 pages)

Packaged Rooftop Air Conditioners

Brand: Ingersoll-Rand | Category: Heat Pump | Size: 13 MB

Table of Contents
4
Model Number Descriptions
6
Model Number Notes
7
General Information
8
Unit Inspection
8
Storage
8
Unit Nameplate
8
Compressor Nameplate
8
Unit Description
8
Economizer Control Actuator (Optional)
8
System Input Devices and Functions
9
Low Pressure Control
9
High Pressure Control
9
Power Exhaust Control (Optional)
10
Lead/Lag Control (Dual Circuit Only)
10
Pre-Installation
12
Dimensions and Weights
13
Installation
21
Foundation
21
Horizontal Units
21
Ductwork
21
Roof Curb
22
Rigging
23
General Unit Requirements
24
Factory Installed Economizer
24
Temperature Limit Switch Usage for Electric Heat Units
24
Horizontal Discharge Conversion  WSC036H, WSC048H, W/DHC036H
24
Horizontal Discharge Conversion WSC060H, WSC092-120H,  W/DHC048-120H
25
TCO-A Instructions
26
Return Air Smoke Detector
26
Air-Fi ® Wireless Communication Interface
27
Main Electrical Power Requirements
28
Through-The-Base Gas Installation
28
Requirements for Gas Heat
28
Electric Heat Requirements
29
Low Voltage Wiring
29
(AC and DC) Requirements
29
Condensate Drain Configuration
29
Filter Installation
30
Field Installed Power Wiring
30
Standard Wiring
30
Optional TBUE Wiring (Through-The-Base Electrical Option)
30
Field Installed Control Wiring
31
Controls Using 24 Vac
31
Controls Using DC Analog Input/Outputs (Standard Low Voltage Multiconductor Wire)
32
Space Temperature Averaging (Reliatel™ Only)
34
Pre-Start
38
Voltage Imbalance
38
Electrical Phasing (Three Phase Motors)
38
Compressor Crankcase Heaters
39
Reliatel™ Controls
39
Test Modes
40
Unit Start-Up
42
Sequence of Operation
42
Reliatel™ Controls
42
Reliatel™ Controls - Constant Volume (CV)
42
Reliatel™ Control Cooling Without an Economizer
42
Three-Stages of Cooling
42
Reliatel™ Control Evaporator Fan Operation (for Gas Units)
42
Reliatel™ Control Evaporator Fan
42
Operation (for Cooling Only Units)
43
Low Ambient Operation
43
Multi-Speed Indoor Motor
43
Fan Output
43
Multi-Zone VAV Sequence of Operation
43
Supply Air Pressure Control
43
Supply Air Static Pressure Limit
44
Supply Air Temperature Controls
44
Supply Air Setpoint Reset
44
Zone Temperature Control
44
Variable Air Volume Applications (Single Zone VAV)
45
Discharge Air Cool Setpoint Adjustment
45
Reliatel™ Control Cooling with an Economizer
45
Reliatel™ Control Dehumidification
46
Dehumidification Coil Purge Cycle
46
Reliatel™ Control Cooling with an Economizer
46
Economizer Set-Up
46
Reliatel™ Control Heating Operation (for Cooling Only Units)
47
Reliatel™ Control Heating Operation (for Gas Units)
47
Ignition Module
47
Drain Pan Condensate Overflow Switch (Optional)
48
Sequence of Operation - Heat Pumps
49
Heating Operation
49
Demand Defrost
49
Emergency Heat Operation
49
Verifying Proper Air Flow
49
Units with 5-Tap Direct Drive Indoor Fan
49
Units with Belt Drive Indoor Fan
50
Units with Constant CFM Direct Drive Indoor Fan
50
To 5 Ton 17 Plus/Whc/Dhc Units with the Constant CFM Direct Drive Indoor Fan
50
Reliatel™ Units Equipped with Direct Drive Indoor Plenum Fan (Optional Except for 10 Ton Units)
51
Return Air Smoke Detector
52
Economizer Start-Up
52
Compressor Start-Up
53
Heating Start-Up
54
Final System Setup
54
Maintenance
55
Fan Belt Adjustment - Belt Drive Units
55
Monthly Maintenance
56
Filters
56
Return Air Smoke Detector Maintenance
56
Condensate Overflow Switch
56
Cooling Season
56
Heating Season
56
Coil Cleaning
57
Troubleshooting
59
Reliatel™ Control
59
System Status Checkout Procedure
59
Method 1
59
Resetting Cooling and Heating Lockouts
60
Zone Temperature Sensor (ZTS) Service Indicator
61
Clogged Filter Switch
61
Fan Failure Switch
61
Condensate Overflow Switch
61
Zone Temperature Sensor (ZTS) Test
61
Test 1 Zone Temperature Thermistor (ZTEMP)
61
Test 2 Cooling Set Point (CSP) and Heating Set Point (HSP)
61
Test 3 System Mode and Fan Selection
61
Test 4 LED Indicator Test, (SYS ON, HEAT, COOL and SERVICE)
61
Programmable and Digital Zone  Sensor Test
62
Mixed Air Temperature Low Limit Diagnostic
64
Troubleshooting Procedures for Direct Drive Plenum Fan
64
Wiring Diagrams
65
Limited Warranty
67
Heat Pump WCD, WCH, WSC, WHC and DHC (Parts Only)
67
Models Less than 20 Tons for Commercial Use
67

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Ingersoll-Rand Precedent D/WHC074H Installation, Operation And Maintenance Manual (68 pages)

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