Yazaki - Gas Fired Double-Effect Chiller-Heaters

Gas Fired Double-Effect Chiller-Heaters

CH-K Series: 30, 40, 50, 60, 80, 100 RT Cooling with Standard Heating Capacities


  • "G" Series control package utilizing VFD solution pumps are used on the 30 to 80 ton chiller-heaters.
  • Each modular chiller-heater serves a dual purpose: Cooling and Heating.
  • Cooling or heating operation can be selected from a remote or built-in switch with a 30-minute changeover.
  • A two pipe hydronic system can be used to circulate chilled or hot water to a central air handling unit or to multiple fancoils.
  • Can be vented with inexpensive Double Wall Type B Vent using Category I rules.
  • Vacuum vessel is hermetically sealed at the factory for a level of vacuum integrity that is unmatched in the industry, with no field welding necessary.
  • Safe, odorless, non-toxic lithium bromide and water are the working fluids and operate under a vacuum at all times.
  • Proprietary solution and inhibitor blends ELIMINATE the need for regular chemical analysis, resulting in much simpler regular maintenance when compared with other manufacturers.
  • Only two moving parts – the solution pump and the burner blower – are needed. We don't use multiple pumps as some other manufacturers do, because we allow gravity to do the work for us.
  • All field piping and wiring connections are conveniently located on the rear of each module.
  • Built-in control panel with microprocessor control simplifies installation and maintenance.
  • Safety shutdown for abnormal cooling water conditions is included in the logic of the microprocessor control.
  • The DOUBLE-EFFECT absorption cycle and forced-draft burner reduce fuel consumption and require less heat to be rejected to the cooling tower, resulting in energy savings and a smaller required cooling tower size.
  • UL Listed in the USA and Canada.
  • Cabinets are UL50E Type 3R and are suitable for indoor or outdoor installation without modification.
  • Each unit is run-tested at the factory prior to shipment. The factory trims and balances the solution concentration so you don't have to.
  • Needs no back-up power source to prevent crystallization during a power failure, as gravity alone can handle it.