Macurco RD-xx User Manual
REV – 2.1
[34-2900-0511-7 ]
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Use Instructions and Limitations
WARNING
Each person using this equipment must read and understand the information in this user manual
before use. Use of this equipment by untrained or unqualified persons or use that is not in
accordance with this user manual, may adversely affect product performance.
2.1
Use For
The Macurco RD-xx is a dual relay Refrigerant (REF) detector for industrial applications. The RD-xx has selectable 4-20 mA
output, and buzzer. The RD-xx has a long-life solid-state sensor (expected lifespan of 7+ years). The RD-xx is a low-level meter
with alarm point set to 1000ppm of refrigerant gas. It is an electronic detection system used to measure the concentration of
refrigerant gas and provide feedback and automatic exhaust fan control to help reduce refrigerant gas concentrations in
industrial refrigeration, cold storage, warehouses, hockey rinks, etc. The RD-xx is capable of detecting several refrigerants
including R-22, R-134A, R-404A, R-407C and R-410A. The RD-xx is factory calibrated and 100% tested for proper operation.
Refrigerants are colorless and nearly odorless liquids or gases divided into two groups according to toxicity and flammability.
See ANSI/ASHRAE Standard 34-2007 - Designation and Safety Classification of Refrigerants for details. Always review the
refrigerant MSDS and safety classifications before use. RD-xx can be used stand alone, with the Macurco Detection and
Ventilation Control Panel, other 12 VAC or 24 VDC fire/security panels or building automation systems.
WARNING
Use only for monitoring the gas which the sensor and monitor is designed to detect. Failure to
do so may result in exposures to gases not detectable and cause serious injury or death. For
proper use, see supervisor or user manual, or contact Technical Support at 1-844-325-3050.
2.2
Do NOT use for
The RD-xx is not intended for use in hazardous locations or residential applications such as hotel rooms, dorm rooms,
apartments, etc. as a refrigerant leak detector. The RD-xx should also not be used in applications with rapid humidity/carbon
dioxide changes and the presence of aerosols and hydrocarbons. Do not mount the RD-xx where the normal ambient
temperature is below 0°F or exceeds 125°F (below -18°C or above 52°C). The RD-xx mounts on a 4x4 electrical box supplied by
the contractor. Do not install the RD-xx inside another box unless it has good air flow through it.
WARNING
This equipment may not function effectively below 0°F or above 125°F (-18°C or above 52°C).
Using the detector outside of this temperature range may adversely affect product performance.
