The most unique feature is integrating the FX10 into the Envision series as both the heat pump and DDC controller providing both a cost advantage and providing features not typically found on WLHP controls. This integration allows heat pump monitoring sensors, status and service diagnosis faults to be communicated thru the DDC direct to the building automation system (BAS), giving building supervisors detailed and accurate information on every piece of equipment without removing an access panel.

3 General Installation Information................................................. 4 Dimensional Data............................................................ 5-11 Installation Steps........................................................... 12-15 System Cleaning and Flushing...................................................16 Open Loop Ground Water Systems ..............................................17 Electrical Connections.........................................................18 Auxi

2 NS SPLIT INSTALLATION MANUAL General Installation Information Safety Considerations WARNING: Before performing service or maintenance operations on a system, turn off main power switches to both units. Turn off accessory heater power switch if applicable. Electrical shock could cause personal injury. Installing and servicing heating and air conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified ser vice personnel should install, rep

Geothermal/Water Source Heat Pumps • R-410A Refrigerant • 2, 2.5, 3, 3.5, 4, 5, 6 Ton Single Speed • 2, 3, 4, 5, 6 Ton Dual Capacity RESIDENTIAL Geothermal/Water Source Heat Pumps • R-410A Refrigerant • 2, 2.5, 3, 3.5, 4, 5, 6 Ton Single Speed • 2, 3, 4, 5, 6 Ton Dual Capacity RESIDENTIAL Installation Information Water Piping Connections Desuperheater Connections Electrical Startup Procedures Troubleshooting Preventive Maintenance IM1585 12/08 Envision Manual ENVISION RESIDENTIAL INSTALLATION MA

Envision Series Geothermal Indoor Split Heat Pumps • R-410A Refrigerant • 2 - 6 Ton Single Speed • 2 - 6 Ton Dual Capacity Envision Installation Information Water Piping Connections Desuperheater Connections Electrical Startup Procedures Troubleshooting Preventive Maintenance IM1592 06/07 ENVISION SERIES INSTALLATION MANUAL Model Nomenclature NDZ049A1 1AC Coax Options Model Type C= Copper N= Envision N= Cupronickel Compressor Type Open Option D= Dual Capacity A= Standard S= Single Speed Hot Wate