OVERVIEW

Official designation: Belimo Z220S-230 (Z..S Series, 2-way Zone Valve)

Role/Application: A 2-way motorized zone valve with a spring return actuator for open or closed hot and cold water systems in HVAC fan coil units.

KEY SPECS SUMMARY

Power: 230 V AC, 6.5 W running

Interfaces / Ports: Cable 1 meter, 2 x 0.75 mm square

Indicators: Refer to the latest manufacturer manual.

Operating Temp: 0 to 93 degrees C (Fluid)

Platform / Compatibility: Fan Coil Unit, Internal thread 3/4 inch

Limit: Close-off pressure 344 kPa (PN 20)

Lifecycle: Active / Standard HVAC Valve

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the nominal pressure rating and kvs value for the Z220S-230 valve?

A: The nominal pressure is PN 20, and the flow coefficient is kvs 2.2 cubic meters per hour.

Wiring & Installation:

Q: What type of electrical control signal is used by the 230 V AC actuator?

A: The actuator is designed for simple open and close control (On/Off type).

Troubleshooting & Compatibility:

Q: What is the maximum percentage of glycol allowed in the fluid handled by the valve?

A: The valve is compatible with cold and hot water containing a maximum of 50 percent volume of glycol.

Replacement & Upgrades:

Q: What is the running time range for the motor to fully stroke the valve?

A: The motor running time is specified between 13 and 18 seconds for full travel.