Danfoss 034N0083 Regulator

The Danfoss 034N0083 CPCE 15 is a professional-grade hot gas bypass regulator engineered to maintain precise evaporator pressure by adapting compressor capacity to actual load conditions. Featuring a 5/8" ODF solder connection, this servo-operated valve is typically installed in a bypass line between the high-pressure and low-pressure sides of the system. It is designed to inject hot gas between the thermostatic expansion valve (TXV) and the evaporator, ideally paired with an LG liquid-gas mixer to ensure a homogenous mixture and prevent high suction superheat. With a maximum working pressure of 392 psig (28 bar) and a versatile operating range from -40°F to 140°F, the CPCE 15 provides reliable capacity regulation for HVACR refrigeration systems using HCFC, HFC, and HC refrigerants. This regulator is essential for preventing short-cycling and evaporator icing during low-load periods, ensuring stable system operation and protecting the compressor from liquid slugging through consistent pressure management.

Key Benefits for Contractors:

• Enhanced system stability by preventing evaporator pressure from dropping below a preset limit during low-load cycles.
• Robust 5/8" ODF solder connections ensure leak-free integration into standard refrigeration piping.
• Advanced servo-operated design provides high-precision modulation compared to direct-acting alternatives.
• Wide refrigerant compatibility, making it a versatile stock item for various commercial cooling applications.
• Protection against compressor short-cycling, which reduces mechanical wear and energy consumption.

Common Questions & Technical Insights:

Where should the CPCE 15 be installed in the system?
For maximum efficiency, the Danfoss 034N0083 should be installed in a bypass line from the discharge side to the suction side, specifically injecting hot gas between the expansion valve and the evaporator. Using an LG liquid gas mixer at the injection point is highly recommended to protect the compressor from excessive heat.

Is the CPCE 15 compatible with modern low-GWP refrigerants?
Yes, as a veteran-choice hot gas bypass valve, it is rated for use with a broad range of refrigerants, including common HFCs and HCFCs. Always verify specific chemical compatibility and pressure ratings when retrofitting older systems.

How do I adjust the pressure setting on this regulator?
The setting is adjusted via the screw on the pilot head. Turning the screw clockwise increases the pressure at which the valve begins to open, allowing more hot gas to bypass and maintain the desired suction pressure.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.