Honeywell 301EM-20 Controller

Delivers sophisticated control functionality for up to twenty remote refrigerant sensors and detects a wide variety of gases. Protects personnel and property when mounted in mechanical or chiller rooms. Optional horn and strobe will quickly alert personnel when gas is detected.

Features & Benefits

  • Easy to read LCD display
  • Auto-diagnostic capabilities
  • Convenient stand-alone or network operation
  • Three alarm levels
  • Combine with 301IRF and S301D2 sensors for a complete solution.

Quick Specs

  •  Power requirement: 22-27 VAC, 29-38 VDC, 2A max @ 29 VDC
  •  Size: 11 (H) x 8 (W) x 2.7 (D) in. (28 x 20.3 x 7cm)
  •  Weight: 2.25 lbs. (1.02 kg)

Product Overview

Easily configured to meet ASHRAE 15, B-52 and International Mechanical Code requirements, the 301EM is commonly used to optimise gas detection in mechanical and chiller rooms.

A full complement of sensors (including toxic, Oxygen, combustible gases and a full line of refrigerant sensors), horns, strobes and remote panels provide added flexibility to suit a variety of gas detection system solutions.

ASHRAE No 15-2001 Mechanical Standard and B-52 Code Compliance
The ASHRAE and B-52 security standards have been established to minimise risk and protect the safety of mechanical room personnel and the environment at large. Available in a special configuration, the 301EM mechanical room controller has been carefully designed to meet and even exceed these rigorous standards. The Vulcain 301EM can be configured to offer automatic fan, horn and strobe activation in addition to manual fan activation. Latching relay for manual alarm recognition, silence key for manual horn deactivation, built-in 24 Vdc outputs for horn operation, and 2 breakglass switch accessories for manual alarm activation ensure optimal performance.

Features & Benefits

User Friendly
•  Easy to read LCD display
•  Auto-diagnostic capabilities

Economical Solution
•  Cost-effective answer for installation in hazardous locations

Flexible Operation
•  Able to operate with up to four remote sensors at a time
•  Various sensors available to simultaneously detect a range of different gases
•  Robust and reliable RS-485 Modbus communication

Output Adaptability
•  Three 24 Vdc alarm outputs and four 4-20 mA outputs

Safety Measures
•  Four fully programmable relays
•  Three alarm levels with built-in visual indicators and audible alarm

Beneficial Options
•  Convenient stand-alone or network operation

Additional Information

  1. Datasheet
  2. Spec Sheet
  3. User’s Guide 

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