Installation Instructions; Location & Mounting - Macurco DVP-120C User Instructions

Macurco DVP-120C Manual

3 Installation Instructions

Gas detection and exhaust fan control are provided by a Macurco DVP-120C system. System wiring includes the
main power connection for the DVP-120C, the fan control connections and/or alarm connections from the DVP-120C
to the building ventilation and automation systems. The DVP-120C also includes the RS-485 serial interface from the
DVP-120C 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 is configured 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-120C may be
accessed through the system display and keypad.
This equipment helps monitor for the presence and concentration level of certain
specified airborne gases. Misuse may produce an inaccurate reading, which means that
higher levels of the gas being monitored may be present and could result in
overexposure. For proper use, see supervisor or User manual, or call Macurco Technical
Service at 1-844-325-3050.
This DVP-120C system should be used with Macurco™ CM-6 and TX-6-ND transducers and each unit will measure
the level of the target gas (i.e. CO, and NO
communication loop. The transducers operate on low voltage (24VDC). All power and signal connections for the
transducers are provided via unshielded two conductor cable from an external power source. DVP-120C Modbus
applications use shielded 3-conductor wire with one twisted pair providing a pair for signal (A & B), common (COM)
and shield ground (SHD) connections. The DVP-120C control panel provides three relays which can be used for
ventilation fan control or alarm signaling. These relays (SPDT - Form C) are for pilot duty only, capable of switching
10 amp loads up to 240 VAC. Main power wiring should conform to national and local electrical codes and may
require separate inspections and certification. Contact your local building authority for further details.
DVP-120C may not function effectively below 32°F (0°C) or above 104°F (40°C). Using
the equipment outside of this temperature range may adversely affect product.
3.1 Location & Mounting
The DVP-120C should be installed in a centralized location, easy to access and protected weather and other
environmental elements. DVP-120C is intended for indoor use only. A Mechanical room, Alarm Control Room or
other similar areas are recommended.
Mounting holes are provided in the DVP-120C case at the four corners. The top two are keyhole shaped so that the
panel can be hung and then the two bottom screws driven to hold the panel. See figure 3-1. The panel should be
mounted with sufficient space around the panel for access to conduit entry holes provided on the top, bottom and
right side of the panel.
REV – 1.0
WARNING
) and provide this information to the DVP-120C over Modbus
2
WARNING
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