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Low GWP Large Belt Drive Packaged Series: SB Horizontal and Vertical, shown

Low GWP Large Belt Drive Packaged Units – 6 to 25 tons

Tranquility® (SB) Compact High-Capacity Series 


Low GWP Stamp
Low Global Warming Potential (GWP): The Tranquility (SB) Compact High Capacity Series

The Tranquility® (SB) Compact High-Capacity Series raises the bar for water-source heat pump efficiencies, features and application flexibility. Not only does the Tranquility SB exceed ASHRAE 90.1 efficiencies, but it also uses R-454B low Global Warming Potential (GWP) refrigerant, making it an extremely environmentally friendly space conditioning product solution. Tranquility SB is eligible for additional LEED® (Leadership in Energy and Environmental Design) points due to its innovative and environmentally-conscious design.


  • Horizontal sizes 072 (6 Tons, 21.1 kW) through 120 (10 Tons, 35.2 kW)
  • Vertical sizes 072 (6 Tons, 21.1 kW) through 300
    (25 Tons, 87.9 kW)
  • Environmentally-friendly R-454B low-GWP refrigerant
  • Refrigerant Detection System (RDS) (required for all sizes)
  • Horizontal configurations with left or right return-air discharge and straight or back supply-air discharge. Discharge is field convertible. Field conversion uses all existing parts, including panels and belts
  • Vertical configurations with front or back return-air discharge and top, front, or back supply-air discharge. Fan discharge on vertical unit sizes 072-120 is field convertible. Field conversion uses all existing parts, including panels and belts
  • Electric power entry points from either side of the front
  • Configurable water connections for left or right handling
  • Dual refrigeration circuits (all sizes)
  • Exceeds ASHRAE 90.1 efficiencies
  • Galvanized-steel cabinet construction
  • Insulated divider and separate compressor/air-handler compartments
  • TXV metering device
  • Standard hanger brackets for horizontal units
  • Premium-duty motor that is VFD compatible
  • Communicating Controls Powered by CXM2:
    • Multiple communication pathways for unit access and diagnosis:
      • Cloud-based remote monitoring via Wi-Fi communicating color-touchscreen thermostat
      • Connect directly to the system with a handheld service tool
    • Provides real-time unit operating conditions
    • Reduces startup, commissioning, and service time by providing key system temperatures electronically
    • Captures operating conditions in the event of a safety shutdown


  • Variable Frequency Drive (VFD) fan-motor controls (single-zone VAV compatible)
  • Blower motor/sheave drive packages
  • BACnet, Modbus, and Johnson Controls N2 compatibility options for Building Management Systems (BMS)
  • Sound-absorbing UltraQuiet package
  • Coated air coil
  • Dual-point power
  • Waterside Economizer (WSE): requires the standard CXM2 and heat-pump thermostat with two-stage cooling
  • Extended-range insulation for geothermal applications
  • Motorized and modulating water valves for ultimate part-load operation


  • Wi-Fi communicating (AWC) thermostat with color touchscreen
  • Wide variety of thermostat options to meet your application needs
  • Various length braided-hose kits with optional water valve, PT plugs, blowdown valve, flow regulator, and strainer
  • Externally-mounted manual and motorized water valves
  • 1-inch Merv 8 filter
  • 2-inch Merv 8 or 13 filters
  • Aesthetically-pleasing wall sensors for connection to BMS (MPC) controls

Blower Motor

Tranquility (SB) Compact High-Capacity Series: Close Up Look - Blower Motor

Belt-drive blower with high efficiency motor and multiple pulley adjustments. Galvanized steel cabinet.

Dual Compressors

Tranquility (SB) Compact High-Capacity Series: Close Up Look - Dual Compressors

Dual compressor refrigeration circuit.


Tranquility (SB) Compact High-Capacity Series: Close Up Look - Condensate

Condensate overflow is one of the 8 standard safeties provided by the microprocessor controls in all SB Series units.

Variable Frequency Drive (VFD) (Optional)

Tranquility (SB) Compact High-Capacity Series: Close Up Look - Variable Frequency Drive (VFD) (optional)

VFD’s allow the fan motor to ramp speed (CFM) up or down to match the load of the space. This allows the Tranquility SB to deliver a constant leaving air temperature resulting in variable capacity which optimizes system efficiency and saves owners money.

ClimateMaster, Inc.

7300 S.W. 44th Street

Oklahoma City, OK 73179


Learn more about other Climate Control Group companies

CCG | ClimaCool | ClimateCraft | IEC

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