Geothermal heat pump MARTSOURCE®

water/airR32low greenhouse gases

Overview
Deliver reliable comfort and energy-efficient heating and cooling with the SmartSource® line of single-compressor Water Source Heat Pumps (WSHP). The range is engineered for applications from compact residential installs to large commercial projects, offering configurable options for standard, geothermal and waterside-economizer systems.

Tier structure and models

• Tier 1 — SmartSource® Compact: Models WSCH, WSDH, WSCV, WSDV. Space-saving units for constrained installations; available factory-stocked for quick delivery and configurable for geothermal or boiler/tower water loops.
• Tier 2 — SmartSource® Plus: Models WSMH, WSNH, WSMV, WSNV. Balance of efficiency and flexibility; vertical floor-mounted and horizontal ceiling-mounted configurations (½ to 5 tons).
• Tier 3 — SmartSource® Premium: Models WSSH, WSTH, WSSV, WSTV. Higher-efficiency, low-noise units with EC motors standard; capacities from 1/2 to 6 tons; factory options for geothermal readiness.

Key features

• Low-GWP R-32 refrigerant for reduced charge and improved system efficiency versus common alternatives
• High-efficiency rotary or scroll compressors; two-stage options on selected horizontal models for enhanced energy savings and humidity control
• Optional EC fan motors with multi-position unit-level speed control and BACnet customization
• Smart Dehumidification option for improved moisture control in humid climates
• Waterside economizers to leverage cold loop water for cooling and reduce operating energy
• Multiple factory-installed options: hot gas reheat, auxiliary electric heat, ECM fan motor, two-way motorized valve, compressor sound blanket
• MicroTech® 2300 unit controller for standalone operation or low-cost network integration using BACnet®
• MERV-8 and MERV-13 filter options and closed-cell insulation to prevent fiber contamination
• Double-sloped polymer or stainless-steel drain pan options to limit microbial growth

Performance highlights

• Refrigerant: Low-GWP R-32
• Capacity range: 1/2 to 6 tons
• SmartSource Compact & Premium — Single-stage sizes: 007–070; Two-stage sizes: 024–070
• SmartSource Plus — Single-stage sizes: 007–060; Two-stage sizes: 024–060
• Up to 22.0 EER and 6.0 COP depending on configuration

Applications
Suitable for new construction and retrofit projects including schools, offices, lodging, condominiums, retail, clinics, assisted-living and multi-unit residential buildings, manufacturing facilities and other commercial or institutional buildings where efficiency, low noise and indoor air quality are priorities.

Resources and documentation available
Product catalogs, installation and operation manuals, controller documentation, sales and engineering data, and application software are published for SmartSource® units (catalogs, IM and ED documents, controller firmware and guides).

Technical specifications

• Refrigerant: R-32 (low GWP)
• Capacity range: 0.5–6 tons
• Unit configurations: horizontal ceiling-mounted and vertical floor-mounted; Compact, Plus, Premium tiers
• Compressors: high-efficiency rotary or scroll; two-stage available on selected models
• Fan motors: optional EC motors; adjustable airflow settings; ECM options
• Controls: MicroTech® 2300 unit controller; BACnet® communication modules and firmware available
• Efficiency: Up to 22.0 EER and 6.0 COP; configurable to exceed ASHRAE 90.1 in many arrangements
• Filtration: MERV-8 and MERV-13 options
• Drain pans: double-sloped polymer or stainless-steel options
• Applications: standard or factory geothermal-ready; waterside economizer available
• Factory options: hot gas reheat, auxiliary electric heat, two-way motorized valve, compressor sound blanket, closed-cell insulation