Document Part # 026-4413 Rev 2 Page 1 of 4
©2018 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
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The Modular Refrigeration Leak Detection Sensor is
Emerson’s state-of-the-art infrared refrigerant gas
detector that can detect a wide range of gases. The
MRLDS-250 can be used on a stand-alone basis or
integrated into supervisory controls. The MRLDS-250
can be used in locations that require continuous
monitoring and to add gas detection solutions to an
existing system.
The MRLDS-250 is available in two versions:
• The broadband gas detector is used as a general
purpose gross leak detector and is factory tested and
certified to +/- 35% accuracy.
• The gas specific versions come factory certified and
calibrated with +/- 3% accuracy to the target refrigerant
when there is a need for more accurate detection.
For complete part number and installation information, see
the full MRLDS-250 manual (P/N 026-1315).
MRLDS-250 Installation
Mounting the MRLDS-250
1. To open the housing as received, use a flat blade
screwdriver and depress the top latch. While pushing
the latch, grasp the back edge of the housing near the
latch and pull the back away.
2. Position the base to the pre-determined mounting
location.
3. For Wall Mount, attach the MRLDS-250 base to the
mounting surface using two #6 screws (provided)
through two of the seven mounting holes
(see Figure 2). For Junction Box Mount, attach the
MRLDS-250 base to the junction box through the two
junction box holes.
Figure 1 - MRLDS-250 Components
Figure 2 - Front and Back of the MRLDS-250 Base
Quick Setup Guide
MRLDS-250
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