Honeywell 301EM-20 Specifications

301EM-20

The complete solution for
Mechanical Rooms. Monitor up
to 20 sensors for Refrigerant,
Toxic and Combustible gases.

The 301EM-20 acts
as a controller for
up to 20 remote
sensors and suits
a variety of gas
detection system
solutions for
Mechanical Rooms.

Particularly configured to meet ASHRAE
15, B-52 and International Mechanical
Code requirements, the 301EM-20 is
commonly used to optimize 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 Mechanical Standard
and B-52 Code Compliance

The ASHRAE and B-52 security
standards have been established to
minimize risk and protect the safety of
mechanical room personnel and the
environment at large. Available in a
special configuration, the 301EM-20
mechanical room controller has been
carefully designed to meet and even
exceed these rigorous standards. The
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.

Find out more

www.honeywellanalytics.com

Contact Honeywell Analytics:

Honeywell Analytics, Inc.
4005 Matte Blvd., Unit G
Brossard, QC, Canada
J4Y 2P4
Tel: [phone]
Toll-free: 800.563.2967
Fax: [phone]
[e-mail]

Technical Services

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www.honeywell.com

User Friendly

• Easy to read LCD display

• Auto-diagnostic capabilities

Economical Solution

• Cost-effective answer for installation in Mechanical

Rooms locations

Flexible Operation

• Able to operate with up to 20 remote sensors at a time

• Various types of sensors available to simultaneously

detect a range of different Refrigerant, Toxic and

Combustible gases

• Robust and reliable RS-485 Modbus communication

Please Note:

While every effort has been made to ensure
accuracy in this publication, no responsibility
can be accepted for errors or omissions.
Data may change, as well as legislation, and you
are strongly advised to obtain copies of the most
recently issued regulations, standards, and guidelines.
This publication is not intended to form the
basis of a contract.

DS01007_v7 4/11

© 2011 Honeywell Analytics

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