OAK geothermal heat pump are available in

R22     390kW-4213kW

R134a   255kW-2669kW

Features and benifits:

High efficiency & stability

Unique structure design of heat exchanger and multi refrigerant circulation ensure highly efficient operation under partial or full load running condition.

Advanced twin screws compressor with optimum structure can realize automatic stopless or 4 steps capacity control to achieve high efficiency.

Running noise is low thanks to low friction area inside the compressor.

The compressor has a long lifetime profiting from high performance of interior oil segregator.

High reliability and lower noise

Working noise reduced by inner positioned oil separator

Oil supply automatically controlled by pressure difference

No oil pump, less working parts, higher reliability

Highly efficient and reliable heat exchanger

Flooded type (optional)/dry type evaporator and shell & tube condenser, with unique heat exchanger structure and optimum copper pipe combination, enhance the heat emission and exchange efficiency greatly.

Self-cleaning, high intensity and anti-shaking design ensure the heat exchanger unstained, reliable, quiet.

Complete protections ensure high reliability and stability

Compressor overload protection

Overheat protection

Wrong or reverse phase protection

High/low pressure protection

Oil level protection

Chilled or cooling water storage protection

Anti-freezing protection for chilled water

Temperature sensor or communication failure malfunction alarm.

Control functions

Distant control function

Multiple operation control function: cooling. Self-diagnostic, manual chagerover.

Record the malfunction query function

User-friendly operation touch controller

Intelligent control compatible with most communication protocol, PPI/MPI and BMS by PROFIBUS

Network communication

Support multiple electronic communication protocol

Group control for multiple master units & network communication with multiple intelligent equipments

Compressor start up in sequence and balance the friction each other

Self-diagnostic & self-lock function

Fully automatically energy saving operation