This document is an instruction manual for the ACTIVALTM electric three-way valve VY54X0L (JIS 10K-FC200). The valve is compact, lightweight, and durable, with low power consumption and linear characteristics. It can be operated using different control signals, including nominal 135 Ω feedback potentiometer, nominal 135 Ω resistance input, 4-20 mA DC input, 2-10 V DC input, and 0-10 V DC input. The product is suitable for general air conditioning control and must be used within the specified operating range.
The ACTIVAL VY54X0L is an electric three‑way valve with integrated actuator, designed for controlling hot and cold water in building systems. It features a compact, lightweight design, low power consumption, and a built‑in feedback potentiometer for proportional control.
This service manual covers safety precautions, technical specifications, installation guidelines, wiring options, operation procedures, accessory information, and regular maintenance and troubleshooting steps for the valve. This manual is written in Chinese.
| Rated pressure | JIS 10K (≈0.98 MPa) |
|---|---|
| Nominal size DN50 | Cv 45, pressure drop 300 kPa |
| Body material | Grey cast iron (JIS FC200) |
| Power supply | 24 VAC ± 15 % 50/60 Hz |
| Power consumption (feedback potentiometer type) | 7 VA |
| Operating temperature range | -20 °C to 50 °C |