Page 2 IM-738
Table of Contents
Introduction ......................................................................................3
Unit Nameplate ............................................................................3
Compressor Nameplate ................................................................3
Gas Burner Nameplate .................................................................3
Hazard Identification Information ...............................................3
Nomenclature ...............................................................................3
Unit Description ...........................................................................4
Condenser Fan Arrangement .......................................................6
Refrigerant Circuit Schematic ......................................................6
Refrigeration Piping .....................................................................7
Control Locations .......................................................................10
Control Panel Locations .............................................................12
Controls, Settings, and Functions ..............................................18
Mechanical Installation ..................................................................20
Receiving Inspection ..................................................................20
Unit Clearances ..........................................................................20
Ventilation Clearance .................................................................21
Overhead clearance ....................................................................21
Roof Curb Assembly and Installation ........................................22
Post and Rail Mounting ..............................................................24
Rigging and Handling ................................................................24
Reassembly of Split Units ..........................................................26
RPS Factory Split at Condenser .................................................27
RPS/RDT Factory Split at Fan ...................................................33
Piping Recommendations ..........................................................35
Holding Charge ..........................................................................35
Leak Testing ...............................................................................35
Evacuation ..................................................................................35
Refrigeration Service Valves .....................................................37
Charging the System ..................................................................37
Refrigerant Charge .....................................................................37
Subcooling .................................................................................38
Condensate Drain Connection ...................................................38
Unit Piping .................................................................................38
Steam Coil Piping ......................................................................39
Steam Piping Recommendations ...............................................39
Steam Trap Recommendations ..................................................39
Damper Assemblies ...................................................................40
Cabinet Weatherproofing ...........................................................41
Installing Ductwork ....................................................................41
Installing Duct Static Pressure Sensor Taps ..............................42
Electrical Installation .....................................................................44
Field Power Wiring ....................................................................44
Field Control Wiring ..................................................................47
Preparing Unit for Operation .........................................................48
Relief Damper Tie-Down ...........................................................48
Spring Isolated Fans ...................................................................48
Adjustment of Scroll Dampers ...................................................49
Adjustment of Supply Fan Thrust Restraints .............................49
Adjustment of Seismic Restraints ..............................................50
Sequences of Operation .................................................................51
Power-up ....................................................................................51
Fan Operation .............................................................................51
Economizer Operation ...............................................................51
Mechanical Cooling Operation ..................................................52
Heating .......................................................................................53
Wiring Diagrams ...........................................................................54
Typical Power Circuit Wiring (6 Compressor / VFD ................55
Typical Main Circuit Wiring
(Inlet Vane & Controls by Others) ............................................56
Typical Main Circuit Wiring (VFD & Controls by Others) ......57
Typical Condensing Unit Control for RPS
with MicroTech II Control .........................................................58
Typical Condensing Unit Control w Control Schematic for RPS
(Controls by Others, 6 Compressor Unit ...................................59
Typical Supply / Return Fan Control Circuit Wiring
(No Controls) .............................................................................60
Typical Gas Furnace Control Circuit
(Modulating Burner, Mixed Air Intake) ....................................61
Unit Options ...................................................................................62
Enthalpy Control ........................................................................62
Hot Gas Bypass ..........................................................................63
SpeedTrol (NA Unit Sizes 015C - 030C) ..................................64
External Time Clock ..................................................................65
Smoke Detectors ........................................................................65
Freeze Protection .......................................................................65
Mixed Air Temperature Alarm ..................................................65
Duct High Pressure Limit ..........................................................65
Variable Inlet Vanes ..................................................................66
Variable Frequency Drive Operation .........................................71
Convenience Receptacle/Section Lights ....................................71
DesignFlow‰ Outdoor Air Damper Option .............................71
Propeller Exhaust Fan Option ....................................................73
Propeller Exhaust Fan Control ...................................................76
Check, Test, and Start Procedures .................................................77
Before Start-up ...........................................................................77
Power-up ....................................................................................77
Fan Start-up ...............................................................................77
Economizer Start-up ..................................................................78
Compressor Start-up ..................................................................78
Heating System Start-up ............................................................80
Air Balancing .............................................................................80
Sheave Alignment ......................................................................81
Drive Belt Adjustment ...............................................................81
Mounting and Adjusting Motor Sheaves ...................................82
Rooftop Equipment Warranty Registration Form: ....................85
Final Control Settings ....................................................................89
Maintenance ...................................................................................93
Preventive Maintenance .............................................................93
Unit Storage ...............................................................................93
Gas Furnace ...............................................................................94
Bearing Lubrication ...................................................................94
Setscrews ...................................................................................95
Supply Fan Wheel-to-Funnel Alignment ...................................95
Refrigerant Charge .....................................................................96
Replacing Failed Refrigerant Sensors or Switches ....................96
Winterizing Water Coils ............................................................96
Replacement Parts List ..................................................................97
Service and Warranty Procedure ...................................................98
Limited Product Warranty (North America) ..................................99
Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and
regulations, and experienced with this type of equipment.
Caution:
Sharp edges and coil surfaces are a potential
injury hazard. Avoid contact with them.
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