5
1.4
Features
Externally visible LCD display showing the status of each transducer and relay
External keypad for user selection of the transducer/alarm display and setting the configuration (password protected)
Up to three ventilation control zones can be defined
Each zone can be controlled based on transducer signals and/or time of day
Each relay is configurable for delay before activation and minimum on time
Fail safe operation can be implemented
Lockable NEMA 1 type enclosure
Modular input and output connectors
Three RS-485 digital input channels - 29 addressable sensors per channel*
Compatible with all Macurco 6-Series gas detectors and MRS-485 adapter*
Twelve analog (current loop) input channels
Three 10A, 240 VAC SPDT fan/alarm relays
Drivers for external Horn and Strobe
ETL Listed to UL 508A, CAN/CSA-C22.2 No. 14-13
*DVP-120M only
1.5
Specifications
Size:
10.5” x 12.5” x 2.” (267 mm x 318 mm x 51 mm)
Weight:
6 ½ lb (2.9 kg)
Enclosure: NEMA
1
Type
Operating Temperature:
32 to 104°F (0° to 40°C )
Operating Humidity:
0% to 95% RH non-condensing
Power Input:
90 – 250 VAC, 1 Amp, 47 – 63 Hz, single phase
Relay Rating (3):
SPDT, 120/240 VAC, 10 A resistive
LCD Display:
2 rows of 16 characters with backlight
Status Indicators (LED):
Power, ALARM/warning, Hush, Relay 1, Relay 2 & Relay 3
Audible indicator:
Internal buzzer, 90 dBA at 1ft
External Drivers (2):
24VDC, maximum 250 mA
Carbon Monoxide (CO) Range:
0 – 200 PPM
Nitrogen Dioxide (NO2)Range:
0 – 20 PPM
Combustible (EX) Range:
0 – 50% LEL
Ammonia (NH3) Range:
0 – 100 PPM
Hydrogen Sulfide (H2S) Range:
0 – 50 PPM
Refrigerant (REF) Range:
0 – 1,000 PPM
Oxygen (O2) Range:
0 – 25%
Carbon Dioxide (CO2) Range:
0 – 5,000 PPM
Wild Card (WC) Range:
Variable
Relay On Delay:
0 – 15 minutes in 1 second increments
Relay Minimum Run Time:
0 – 15 minutes in 1 second increments
2
Installation & Connection
Gas detection and exhaust fan control is provided by a Macurco™ DVP-120 system. System wiring includes the main power
connection for the DVP-120, 4-20mA current loop and 24VDC power connections between the remote sensors and the DVP-120, the
fan control connections and/or alarm connections from the DVP-120 to the building ventilation and automation systems. The DVP-
120M also includes the RS-485 serial interface from the DVP-120M to the MRS-485 and remote detectors. Power to the MRS-485 and
detectors is provided by isolated/remote low voltage power supply.
The system configuration is entered by the user through the LCD display and keypad. The system display provides the user with the
system status, and the status of each configured sensor. In addition, all control functions of the DVP-120 may be accessed through the
system display and keypad.
