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Geothermal Heat Pump Design and Installation Standards
ENERGY STAR Homes Northwest
Geothermal Heat Pump
Design and Installation Standards
1.0
CLOSED LOOP GROUND HEAT EXCHANGERS................................................... 1
1.1 INSTALLATION PERSONNEL AND TRAINING REQUIRED. .................................................... 1
1.4. DESIGN METHODS AND COMPLIANCE................................................................................ 2
1.5 EQUIPMENT INSTALLATION................................................................................................ 2
1.6. GROUND HEAT EXCHANGER MATERIALS.......................................................................... 2
1.7 PIPE JOINING METHODS ...................................................................................................... 3
1.8 FLUSHING, PURGING, PRESSURE AND FLOW TESTING ....................................................... 3
1.9 PIPING ARRANGEMENT ....................................................................................................... 4
2.0 PIPE PLACEMENT AND BACKFILLING ................................................................. 4
2.1. HORIZONTAL SYSTEMS ...................................................................................................... 4
2.2 VERTICAL BORE HOLES. .................................................................................................... 4
3.0 INDOOR PIPING AND CIRCULATION SYSTEM.................................................... 5
3.1 CIRCULATOR SIZING AND SYSTEM AND COMPONENTS ..................................................... 5
3.2. ANTIFREEZE SELECTION AND USE. .................................................................................... 5
4.0 GROUND SOURCE HEAT PUMPS.............................................................................. 6
4.1 WATER SOURCE HEAT PUMPS............................................................................................ 6
4.2 HEAT PUMP PIPING AND MATERIALS. ................................................................................ 6
5.0 COMMISSIONING AND VERIFICATION FOR GROUND SOURCE HEAT
PUMPS.............................................................................................................................. 7