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RDS 802C
McQuay RDS 802C User Manual
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McQuay IM 987
5
Introduction
Control Panel
The unit control panels and their locations are shown in the
following figures. These figures show a typical unit
configuration. Specific unit con
figurations may differ slightly
from these figures depend
ing on the part
icular unit options.
Figure 3: Control Panel Locations
Main control panel
Electric heat
control panel
(optional)
Supply fan
section
VFDs, line reactors, and
manual bypass
(optional)
Prop exhaust VFDs
(not shown)
(optional)
4
6
Table of Contents
Default Chapter
2
Table of Contents
2
Introduction
3
Gas Burner Nameplate
3
Hazard Identification Information
3
Typical Component Locations
4
Control Locations
4
Control Panel
5
Controls, Settings, and Functions
12
Mechanical Installation
14
Unit Clearances
14
Ventilation Clearance
15
Overhead Clearance
15
IBC Seismic Compliant Units
20
Roof Curb Arrangement
20
Post and Rail Arrangement
22
Post and Rail Mounting
24
Rigging and Handling
24
Split Units
26
Unit Piping
31
Steam Coil Piping (All Units)
33
Steam Piping Recommendations
33
Steam Trap Recommendations
34
Vestibule Assembly Instructions
38
Damper Assemblies
40
Cabinet Weather Protection
44
Installing Ductwork
45
Installing Duct Static Pressure Sensor Taps
46
Installing Building Static Pressure Sensor Taps
47
Electrical Installation
48
Field Power Wiring
48
Field Control Wiring
51
Mechanical Installation
52
Preparing Unit for Operation
52
Spring Isolated Fans
52
Relief Damper Tie-Down
53
Adjusting Scroll Dampers
53
Adjusting Supply Fan Thrust Restraints
53
Adjusting Seismic Restraints
54
Sequences of Operation
55
Power-Up
55
Fan Operation
55
Economizer Operation
56
Heating
56
Microtech III Controller Operation
57
Using the Keypad/Display
57
Passwords
57
Navigation Mode
58
Edit Mode
58
Wiring Diagrams
59
Legend
59
Unit Options
84
Control Actuators
84
Enthalpy Control
84
External Time Clock
85
Smoke and Fire Protection
85
Smoke Detectors
85
Emergency Shutdown
86
Freeze Protection
86
Field Output Signals
87
Entering Fan Temperature Sensor
87
Duct High Pressure Limit
88
Variable Frequency Drive Operation
88
Convenience Receptacle/Section Lights
88
Designflow™ Outdoor Air Damper Option
88
Propeller Exhaust Fan Option
91
Exhaust Fan On/Off Control
93
Ultraviolet Lights Option
94
Ultraviolet Light Operation
95
Check, Test, and Start Procedures
96
Servicing Control Panel Components
96
Before Start-Up
96
Power up
96
Fan Start-Up
97
Economizer Start-Up
97
Heating System Startup
98
Air Balancing
98
Sheave Alignment
99
Drive Belt Adjustment
99
Mounting and Adjusting Motor Sheaves
100
Final Control Settings
103
Maintenance
106
Servicing Control Panel Components
106
Planned Maintenance
106
Unit Storage
106
Gas Furnace
107
Bearing Lubrication
107
Setscrews
109
Supply Fan Wheel-To-Funnel Alignment
110
Winterizing Water Coils
111
Control Panel Components
111
Replacement Parts List
115
Replacement Parts
115
Service and Warranty Procedure
116
In-Warranty Return Material Procedure
116
Limited Product Warranty (North America)
117
Exceptions
117
Assistance
117
Sole Remedy
117
Rooftop Equipment Warranty Regist. Form
118
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McQuay RDS 802C Specifications
General
Brand
McQuay
Model
RDS 802C
Category
Air Handlers
Language
English
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