Table of Contents
RT-SVX24J-EN 5
unit) (in addition to Two-piece unit rigging
and placement) ..................... 93
Unit Startup ............................ 96
Sequence of Operation ................ 96
Cooling Sequence of Operation ....... 96
Compressor Sequence of Operation . . . 96
Units with Evaporative Condenser Sequence
of Operation ....................... 97
Modulating Dehumidification (Hot Gas
Reheat) Sequence of Operation ...... 101
Energy Recovery Sequence of Operation 103
Gas Heating Sequence of Operation
Standard ......................... 105
Honeywell Ignition System .......... 105
Modulating Gas Sequence of Operation 106
Electric Heat Sequence of Operation . . 106
Electric Heat—CV, VAV Daytime Warm-up
107
VAV Active Occupied Discharge Heating 107
SZVAV Occupied Heating ........... 107
Demand Control Ventilation Sequence of
Operation ........................ 107
Return Fan Sequence of Operation .... 107
Wet Heat Sequence of Operation ..... 108
Unit Startup Check List ............... 108
Performance Data ................... 118
Supply Fan with or without Variable
Frequency Drive ................... 118
Airside Pressure Drop Standard Evaporator
Coil .............................. 120
Exhaust Fan Performance ........... 122
Return Fan Performance ............ 123
Component Static Pressure Drops .... 125
Pressure Curves ..................... 134
Components ........................ 143
Standard Unit without Energy Recovery
Wheel ........................... 143
Standard Unit with Energy Recovery
Wheel ........................... 146
Energy Recovery Wheel (ERW) ....... 151
Service and Repair ................. 156
Seal Adjustment ................... 158
Compressor Startup .................159
Compressor Operational Sounds ......160
Evaporative Condenser Startup .......161
Thermostatic Expansion Valves .......163
Measuring Superheat ...............163
Charging by Subcooling .............163
Standard Ambient Units .............163
Electric, Steam and Hot Water Startup . .164
Gas Furnace Startup ................164
Two Stage Gas Furnace ..............165
Full Modulating Gas Furnace .........167
Final Unit Checkout .................169
Service and Maintenance ...............173
Scroll Compressor Replacement ......181
VFD Programming Parameters ........182
Monthly Maintenance ...............183
Filters .............................183
Air-Cooled Coil Cleaning .............185
Evaporative Condenser Coil Cleaning . .186
Final Process .......................188
Unit Wiring Diagram Number ............190
Warranty and Liability Clause ............196
Index ..................................197
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