AAON RQ NextGen Series Manuals

Manuals and User Guides for AAON RQ NextGen Series. We have 1 AAON RQ NextGen Series manual available for free PDF download: Installation Operation & Maintenance

AAON RQ NextGen Series Installation Operation & Maintenance (108 pages)

Packaged Rooftop Units, Heat Pumps, & Outdoor Air Handling Units

Brand: AAON | Category: Air Handlers | Size: 9.46 MB

Table of Contents
3
AAON ® RQ Series Features and Options Introduction
7
Safety
8
RQ Series Unified Feature String Nomenclature
14
General Information
22
Codes and Ordinances
22
Receiving Unit
23
Figure 1 - Lockable Handle
23
Storage
24
Wiring Diagrams
24
Installation
24
Unit Location
24
Table 1 - Unit Clearances
24
Setting the Curb
25
Figure 2 - RQ Series Orientation
25
Figure 3 - RQ Cabinet Standard and Power Exhaust Gasket Locations
26
Forklifting the Unit
27
Figure 4 - Forklifting an RQ Series Unit from the Side
27
Figure 5 - Forklifting an RQ Series Unit from the Front
27
Lifting the Unit
28
Figure 6 - Lifting Details of a 2-6 Ton Standard or Power Exhaust Unit
28
Figure 7 - Lifting Details of a 2-6 Ton Energy Recovery Wheel Unit
28
Vertical Duct Connection
29
Figure 8 - Vertical Duct Connection
29
Seismic Curb Installation
30
Figure 9 - Solid Bottom Seismic Curb with Filters
30
Figure 10 - Seismic Solid Bottom Curb Without Filters Cross Section
31
Figure 11 - Seismic Solid Bottom Curb Without Filters Detail a
31
Figure 12 - Seismic Solid Bottom Curb Without Filters Detail B
31
Horizontal Duct Connection
32
Outside Air Rain Hood
32
Figure 13 - Seismic Rigid Mount Curb Cross Section
32
Figure 14 - Horizontal Duct Connections
32
Metal Mesh Filters
33
Figure 15 - RQ Series Unit Closed Rain Hood
33
Figure 16 - RQ Series Unit Open Rain Hood
33
Figure 17 - Rain Hood with Metal Mesh Filter Rack Installation
33
Electrical
34
Table 2 - Nameplate Voltage Markings & Tolerances
34
Figure 18 - Unit Base Utility Entry
34
Figure 19 - Back View of Power Switch from Control Compartment
35
Variable Speed Compressors
36
Table 3 - 35 KAIC Fuse Sizing
36
Table 4 - 65 KAIC Fuse Sizing
36
Thermostat Control Wiring
37
Condensate Drain Piping
37
Table 5 - Single Circuited Variable Speed Compressor Frequency Range
37
Table 6 - Control Wiring
37
Draw-Through Coils
38
Table 7 - Draw-Through Drain Trap Dimensions (Metric)
38
Table 8 - Draw-Through Drain Trap Dimensions (Imperial)
38
Figure 20 - Draw-Through Drain Trap
38
Non-Compressorized Liquid and Suction Line Piping
39
Figure 20 - Post Corner Hole Location
39
Figure 21 - Post Back Hole Location
39
Figure 22 - Post Corner Hole Piping
40
Figure 23 - Post Back Hole Piping
40
Startup
41
Filters
41
Supply Fan EC Motor Startup
42
Figure 24 - PIN Connectors on EC Supply Fan Motor Electronics
42
Adjusting Refrigerant Charge
43
Checking Liquid Sub-Cooling
43
Checking Evaporator Superheat
44
Table 9 - Acceptable Refrigeration Circuit Values (Metric)
44
Table 10 - Acceptable Refrigeration Circuit Values (Imperial)
44
Table 11 - Acceptable Microchannel Air-Cooled Condenser Coil Liquid Sub-Cooling Values (Metric)
44
Adjusting Sub-Cooling and Superheat Temperatures
45
Table 12 - Acceptable Microchannel Air-Cooled Condenser Coil Liquid Sub-Cooling Values (Imperial)
45
Table 13 - R-410A Refrigerant Temperature-Pressure Chart (Metric)
46
Table 14 - R-410A Refrigerant Temperature-Pressure Chart (Imperial)
47
Table 15 - R-454B Refrigerant Temperature-Pressure Chart (Metric)
48
Table 16 - R-454B Refrigerant Temperature-Pressure Chart (Imperial)
49
Freeze Stat Startup
50
Condenser Fan EC Motor Startup
50
Table 17 - EC Condenser Fan Cycling Options
50
Adjustable Fan Cycling Switch Procedure
51
Operation
53
Thermostat Operation
53
Packaged DX Cooling Operation and Control
53
Gas Heater Operation
53
Electric Heating Operation
54
Steam or Hot Water Preheating and Heating Operation
54
Modulating Electric Preheat
54
Chilled Water or Non-Compressorized DX Cooling Operation
54
Maintenance
54
Supply Fan
54
DX Cooling
55
Condensate Drain Pans
55
Figure 25 - 2-6 Ton Supply Fan
55
Figure 26 - RQ Supply Fan Removal Bolts
55
Figure 27 - RQ Supply Fan Removal Slide
55
E-Coated Coil Cleaning
56
Microchannel Coil Cleaning
57
Options
59
Heating Coils
59
Chilled Water Coil
59
Table 18 - Hot Water Coil Connection Sizes
59
Table 19 - Steam Coil Connection Sizes
59
Packaged Direct Expansion (DX) Units
60
Table 20 - Chilled Water Coil Connection Sizes
60
Table 21 - Min and Max Water Pressures and Temps
60
Variable Capacity Compressor Controller
61
Figure 28 - Variable Capacity Compressor Controller
61
Table 22 - Demand Signal Vs. Compressor Capacity Modulation
62
Figure 29 - Compressor Controller Flash Code Details
62
Evaporator Coil
63
Condenser Fan
63
Figure 30 - Evaporator Coil Access
63
Refrigerant-To-Water Heat Exchanger
64
Water-Source Heat Pump Applications
64
Open Loop Applications
64
Figure 31 - Removal of a Condenser Fan Assembly
64
Freezing Water in the Heat Exchanger
65
Water Piping
66
Table 23 - Glycol Concentration Freezing Points
66
Table 24 - Condenser Water Connections
66
Energy Recovery Units
68
Energy Recovery Wheel General Cleaning
71
Gas or Electric Heating
77
Table 25 - Electric and Gas Heating Capacities
77
Table 26 - Auxiliary Electric Heating Capacities
77
Electric Preheat
78
Status Display Screens
78
Figure 32 - Preheat Controller
78
System Setting Screens
79
Table 27 - Stages of Electric Preheat
79
LED Flash Alarm Codes
80
Operation
81
Gas Heating
81
Table 28: 2-6 Ton Gas Connections
82
Table 29 - (Metric) Natural Gas Maximum Piping Capacities (M 3 /Hr)
82
Table 30 - (Imperial) Natural Gas Maximum Piping Capacities (Ft 3 /Hr)
82
Figure 33 - RQ Series Gas Heat Exchanger
82
Piping Sizing Examples
83
Inlet and Manifold Pressures
83
Table 31 - (Metric) Propane (Kw) Maximum Piping Capacities
83
Table 32 - (Imperial)Propane (Kbtu/Hr) Maximum Piping Capacities
83
Gas Pressure Regulator & Overpressure Protection Device
84
Piping Supports
84
Additional Gas Piping Considerations
84
Table 33 - Gas Piping Supports (Metric)
84
Table 34 - Gas Piping Supports (Imperial)
84
Figure 34 - Example 2-6 Ton through the Base Gas Piping Note: RQ Units will Only Contain One Heat Exchanger
86
Leak Testing
87
Gas Heater Operating Instructions
88
Figure 35 - Gas Heater Instructions
88
Gas Heating Maintenance
89
Gas Heat Exchanger Removal
90
Figure 36 - Gas Heat Exchanger
90
Phase and Brownout Protection Module
91
Filter Replacement
93
Table 35 - RQ Series 2-6 Ton Pre Filters
93
Table 36 - RQ Series 2-6 Ton Unit Filters
93
Table 37 - RQ Series 2-6 Ton Energy Recovery Wheel Filters
93
Replacement Parts
94
Figure 37 - RQ Series 2-6 Ton Standard Filter Layout
94
Appendix A - Heat Exchanger Corrosion Resistance
97
Appendix B - Thermistor Temperature Vs. Resistance Values
99
RQ Series Startup Form
100
Maintenance Log
104
Maintenance Log (E-Coated Coil)
105
Literature Change History
106
G149150 · Rev. a · 231127
108

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AAON RQ NextGen Series Installation Operation & Maintenance (108 pages)

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