ASK79.165 | OpenAir Electronic Fusible Link. | Siemens

OpenAir Electronic Fusible Link.

The Electronic Fusible Link (EFL) is a heat responsive deivce used with the Siemens OpenAir UL listed fire and smoke control damper actuator. Upon exceeding the 165F (74C) temperature limits of the EFL model ordered and installed, the EFL cuts power to the electronic damper actutor and the actuator's spring retrun mechanism closes the damper. The EFL is compatible only with OpenAir GNDxxx.xU/F UL listed fire and smoke damper actuators.The EFL must be factory-installed. The UL rating carried by the specific damper and actuator is assigned as an assembly and cannot be added in the field.

Description

The OpenAir direct coupled, fast-acting, two-position, spring return electronic actuators are available as 24 Vac/dc, 120 Vac, and 230 Vac models. They are intended for use on UL-listed smoke control dampers and combination fire/smoke rated dampers.

Features

• Optional built-in auxiliary switches: Fixed switch points at 5° and 85° rotation.
• Optional built-in Electronic Fusible Link (EFL) capability with four temperature ratings: 165°F (74°C), 212°F (100°C), 250°F (121°C), 350°F (177°C).
• Reversible fail-safe spring return.
• All metal housing.
• Pre-cabled Teflon® insulated lead wires.
• Fifteen-second operation at rated torque, temperature and voltage.

Application

This actuator is used for the control of dampers requiring up to 53 lb-in (6 Nm) driving torque. It is intended for control of UL-listed smoke control dampers and combination fire/smoke HVAC dampers. This actuator is designed to meet the 2002 revisions to the UL 555/555S and the AMCA Standard 520 specifications.