Macurco RD-xx User Manual
REV – 2.1
[34-2900-0511-7 ]
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2.3
Features
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ETL Listed to UL 61010-1 and CSA C22.2 No 61010-1
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Low level meter with non-adjustable alarm set to 1,000 ppm refrigerant gas
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Fan and alarm relay activation set at 1000 ppm
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5 A SPDT fan relay controls starters of exhaust fans
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0.5 A N.O. or N.C. alarm relay connects to warning devices or control panels
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4-20 mA Current Loop
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RD-xx mounts on a standard 4x4 electrical box and becomes cover for the box
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Supervised system: any internal detector problem will cause the fan & alarm relay to activate
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Calibration kit is available.
2.4
Specifications
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Shipping Weight: 1 pound (0.45 kg)
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Size: 4 1/2 x 4 x 2 1/8 in. (11.4 x 10.2 x 5.4 cm)
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Color: White or Dark grey
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Connections: plugs/terminals
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Mounting box: (not included) 4x4 electric
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Fan relay: 5 A, 240 VAC, pilot duty, SPDT, latching or non-latching
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Fan Delay Settings of 0, 1, 3 (default), 5 and 10 minutes
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Fan Relay Minimum Runtime settings are 0 (default), 3, 5, 10 or 15 minutes
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Fan relay latching or not latching (default) selectable
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Alarm relay: 0.5A 120 V, 60 VA
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Alarm relay actuation: selectable N.O. (default) or N.C.
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Current Loop: 4-20 mA for 0 or 1,000 ppm refrigerant gas, selectable to ’bAS’ (default), ‘EnH’, OFF
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Buzzer: 85 dBA at 10cm settable to on (default) or off
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Digital display: 3-digit LED
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Operating environment 0°F to 125°F (-18°C to 52°C).10 to 90% RH non-condensing
2.4.1
6-Series Low Voltage
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Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC
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Current @ 24 VDC: 75 mA in alarm (two relays), 50 mA (fan relay only) and 23 mA stand by
2.4.2
12-Series Line Voltage
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Power: 100-240VAC (50 TO 60 HZ)
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Current 1.0 A MAX
