Each Chiller-Heater Serves a Dual Purpose: Cooling and Heating
This compact chiller-heater reduces floor space and installation costs because it
replaces the traditional chiller-boiler combination and simplifies piping, pumps, valves and controls.
High Cooling COP of 1.2
Reduces fuel consumption and operating costs by up to 17% compared with other
double-effect absorption units.
Part Load IPLV Rating >1.3
Reduces seasonal fuel consumption because the chiller operates more efficiently at
part load for most of the time.
Low NOx Gas Burner <30 ppm
Advanced Riello low NOx gas burners are used to meet the strict air quality
requirements of California and other states.
Strict quality control and testing with a mass spectrometer ensures the vacuum
section is airtight and eliminates the need for an onboard mechanical purge pump.
Hydrogen, a by-product of the absorption cycle, is continuously removed through a palladium cell or stored with other noncondensible gases in an external purge tank
PID (proportional, integral and differential) controls are utilized to optimize the
absorption cycle performance and provide stable chilled water and hot water outlet
temperatures under all load conditions.
Burner Firing is Modulated 30% to 100%
The burner is proportionally controlled to match the output capacity of the chiller- heater and reduce operating costs.
Safe, Odorless, Non-toxic Working Fluids
Ozone safe and CFC free. Working fluids of non-toxic lithium bromide and water
operate safely under a vacuum at all times.
A Single VFD Hermetic Solution Pump
One variable speed pump circulates solution and reduces electrical consumption at
part load. Additional pumps are not required because gravity feed drippers are used
to distribute refrigerant and solution instead of spray nozzles. This eliminates the need for periodic nozzle maintenance.
Low Cooling Water Temperature
Cooling operation allowed down to 65°F inlet cooling water without the need for cooling tower bypass control.
Equipment room is not required because the chiller-heater is enclosed in a
weatherproof cabinet suitable for indoor or outdoor installation.
Low Electrical Consumption
Since less than 19.3 VA/RT is required to operate the chiller-heater, it is not
neccessary to upgrade the existing electrical service.
Built-In Shutdown Controls
Safely shuts down the chiller-heater under abnormal operating conditions.
Ideal for a Two Pipe Hydronic System
Installation costs reduced because only two pipes are required to transport chilled or
hot water to a central air handling unit or multiple fan-coil units.
30 Minute Changeover
Cooling/heating changeover only requires a 30 minute delay.
Simple Mode Selection
Cooling or heating operation can be selected at the chiller-heater or remotely from
the building management system.
Built-In Digital Display Panel
Used for mode selection, operating status and troubleshooting.
Remote Chilled Water and Hot Water Reset
Raise chilled water setpoint or lower hot water setpoint to reduce operating costs during unoccupied hours.
Hinged Marine Water Boxes
Allow easy access to the condenser and absorber for tube cleaning and maintenance
without disconnecting piping.
Factory Installed Crossover Pipe and Insulation
Eliminates site fabrication and installation of crossover pipe between the absorber
and condenser and site insulation of cold and hot surfaces.
Simplified Transportation and Lifting
Each modular chiller-heater is mounted on a steel frame and anchor points are
provided for lifting.
Since the chiller-heater has relatively few moving parts, the noise level is
typically less than 74idB(A) and there is no vibration. The chiller-heater is ideal for
installation adjacent to occupied spaces because it does not compromise occupant comfort.
Only two routine service calls are required per year to evacuate noncondensible
gases and check other operating conditions. Start-up, routine maintenance and
troubleshooting are provided by a network of independent Yazaki authorized service providers with backup from the factory.
Factory Charged and Performance Tested
Since each chiller-heater is shipped completely assembled and tested, installation and
start-up are simplified.
ISO9001 and ISO14001 Factory Certification
Quality control is assured by compliance with strict manufacturing and industry