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Indoor, Water-Cooled
Single-Stage Water Source Heat Pump
with Puron® Refrigerant (R-410A)

½ to 6 nominal Tons

50PSH - Horizontal
50PSV - Vertical
50PSD - Downflow
Carrier 50PTH Water Source Heat Pump

The 50PS indoor, water-cooled heat pump unit is designed for vertical, horizontal, or downflow installation with a variety of airflow configurations. Units utilize Puron® refrigerant and Carrier’s modulating hot water reheat to provide a practical and economical approach for comfort conditioning requirements in renovation and new construction applications. The 50PS unit can be used in both traditional and geothermal applications, and is also ideally suited for geothermal projects seeking LEED® certification.
Performance Features
  • Capacities of 1 ½, 2, 2 ½, 3, 3 ½ , 4, 5, and 6 tons
  • EERs up to 28.1
  • Puron® non-ozone depleting R-410A refrigerant
  • Fan motor options:
    • ECM (electronically controlled motor)
    • PSC (permanent split capacitor)
    • PSC high-static
  • Scroll compressor (sizes 024-070) or rotary compressor (size 018) mounted on computer selected vibration isolator springs
  • Water loop (boiler/tower and ground loop/water) application use with operating temperature range of 20 to 110 F
  • Extended range package for open loop and geothermal applications (factory-installed option)
  • Fully insulated unit with acoustic type insulation
  • Modulating hot water reheat (factory-installed option)
  • Equipped with performance monitor to ensure efficient heat pump operation
  • TXV (thermostatic expansion valve) controlled
  • Copper or cupronickel heat exchanger (factory-installed option)
  • Blower upgrades for high-static applications (sizes 018-060; factory-installed option)
  • Hot water generator (factory-installed option)
  • Mute package for applications requiring especially low noise levels (factory-installed option)
  • Complete control system (standard) or deluxe microprocessor conrtol, PremierLink™, and LON (Local Operating Network) control systems (factory-installed options)
  • Exceeds ASHRAE 90.1 performance requirements
  • ARI/ISO 13256-1 certified
  • Energy Star certified
Reliability Features
  • Galvanized steel construction
  • Stainless steel, coated, and insulated condensate pan
  • E-coated coils for corrosive environments (factory-installed option)
  • Eight standard safeties include anti-short cycle, random start delay, high/low refrigerant pressure protection, condensate overflow sensor, high/low voltage protection, automatic intelligent reset, water coil freeze protection, and air coil freeze protection
  • Shipped with “report card” validating factory test and proper operation
  • Two-way motorized control valve available for open type systems or variable speed pumping (factory-installed option or field-installed accessory)
  • Reversing valve (4-way), water-to-refrigerant coaxial coil, and enhanced aluminum fin/rifled copper tube refrigerant-to-air heat exchanger standard
  • Microprocessor control with DDC (Direct Digital Controls) options
  • UL and ETL certified
Maintenance Features
  • Access to compressor section through service panels on three sides
  • All service may be done through large, removable front or side panels
  • Blower housing serviceable without disconnecting ductwork
  • Permanently lubricated bearings on blower units
  • Quick electrical disconnects on blower motor and control box components
  • Easily removable control box
  • Refrigerant circuit equipped with high/low pressure ports
  • No tools required to change filters
  • Standard, 1-in. filter
Installation Features
  • Units may be mounted in ceilings, closets, attics, etc.
  • Ducted or free return connections
  • Field convertible discharge
  • Pre-wired and factory charged with Puron® (R-410A) refrigerant
  • Horizontal units include factory-installed hanger isolation brackets
  • Vertical units have internally trapped condensate drain
  • Water and condensate connections are FPT and secured to cabinet
  • Single point electrical connection
Standard Warranty
  • One-year unit
  • 5-year compressor
  • Extended warranty packages available
Factory-Installed Options
Permanent split capacitor, high-static blower motor
Electronically controlled blower motor
Copper or cupronickel heat exchangers
Deluxe microprocessor control system
Extended range units
Hot water generator
PremierLink™ controller
LONMark® compliant controller
Sound attenuation (mute) package
Two-way motorized control valve
Water circuit options
Modulating hot water reheat
E-coated coils
Field-Installed Accessories
2-in. filter rack
Ball valves (brass body)
Fire-rated hoses
Hose kit assemblies
Loop controller
Non-programmable thermostat
PremierLink accessories
Programmable 5-day thermostat
Programmable 7-day flush-mount thermostat
Programmable 7-day light-activated thermostat
Programmable 7-day thermostat
Remote sensors
Solenoid water control valves (brass body)
Two-way motorized control valve
Y strainers (bronze body)
ASHRAE 90.1Energy starANSI/AHRI/ASHRAE/ISO13256-1 water source hp
Canada, us etlC-UL-US

Additional Information
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