Product Overview
This document provides installation guidance for the Danfoss Electric Expansion Valve (ETS) series 12.5 and 25, and the Electric Regulating Valve (KVS) series 15. It details technical specifications, compatibility, operating conditions, and assembly procedures.
Technical Specifications
| Parameter | Details |
|---|---|
| Compatible Refrigerants | ETS: R134a, R404A, R507, R407C, R410A, R22, R1234ze KVS: R134a, R404A, R507, R407C, R410A, R22, R452 and other refrigerants |
| Inlet Fluid Temperature | Max. 65 °C / 149 °F Min. -40 °C / -40 °F |
| Allowable Ambient Temperature | Max. 60 °C / 140 °F Min. -40 °C / -40 °F |
| Max. Working Pressure (PS/MWP) | 45.5 bar / 660 psig |
| Stepper Motor Type | Bipolar |
| Phase Current | 100 mA RMS |
| Resistance | 52 Ω |
| Nominal Voltage | 12 V DC |
Important Warnings
- ⚠️ WARNING: Do not connect directly to AC/DC power source. Connect the valve only to an appropriate controller/driver. Do not operate the valve while assembling or disassembling.
- Maximum brazing temperature: 110 °C / 230 °F.
- Maximum valve body temperature: 700 °C / 1300 °F.
Installation Instructions
The following steps outline the general installation process. Refer to specific diagrams for detailed visual guidance.
Step 1: Valve Assembly
Assemble the valve components. This involves attaching the stepper motor assembly to the valve body. Ensure parts are correctly aligned and secured, potentially by screwing them together (indicated by '1-2 x' in diagrams).
Step 2: System Connection
Connect the assembled valve to the refrigeration system. Diagrams illustrate inserting specific components or seals into the valve housing.
Step 3: Securing Components
Secure the assembled valve and its components. This may involve tightening fittings or housings.
Step 4: Final Tightening and Electrical Connection
Perform final tightening of connections using appropriate tools. A 27 mm (1 1/16 in.) wrench is used for some connections, and a 24 mm (1 in.) wrench for others. A torque of 50 Nm (36 ft-lbf) is specified for a 30° turn on certain fittings.
The valve features an M12 connector cable for electrical connection. The stepper motor is bipolar and has two coils, each with a resistance of 52 Ω. An electrical check of the stepper motor and wiring is recommended. The M12 connector has four pins: 1 (Red), 2 (Green), 3 (White), 4 (Black).
Valve States
The valve can operate in two primary states: 'Closed' or 'Fully open'. Diagrams illustrate these operational positions.
Service Information
This guide is intended for installation and service purposes. Specific part numbers for variants include 034G2088, ETS 12.5: 034G2345, ETS 25: 034G2346, and 034G2344.
