the service bypass valve typically utilizes a locking pin to secure the plunger in either the service or bypass position to prevent accidental state changes

Precision Thermal Sensing: High-sensitivity NTC element delivers accurate resistance signals to the boiler control module for fuel-efficient modulation

all installer configurations and user setpoints are permanently retained during power loss without the need for batteries

Its robust construction ensures a low pressure drop

It operates primarily in Enhanced Mode via the JP1 shunt jumper

Bard 800-0255 TXV 323269-701 the service bypass valve typicallyThe Bard 800 0255 Thermostatic Expansion Valve (TXV) is a critical metered flow component designed for high efficiency refrigerant management in specific Bard HVAC systems. This 3 8 x 3 8 ODF valve utilizes a balanced port design to maintain a constant superheat across varying evaporator loads, ensuring the compressor is protected from liquid slugging while maximizing coil heat transfer efficiency. Constructed for R 410A refrigerant systems, it