ENGINEER AND ARCHITECT SPECIFICATIONS

Gas detection and exhaust fan control is provided by a Macurco DVP-120 system. This System will use CM-2B or CM-3 Carbon Monoxide (CO) to current transducers, ND-2 Nitrogen Dioxide to current transducers or GT- 11A Combustible Gas to current transducers. Each transducer will measure the level of the target gas and provide this information to the DVP-120 over a 4-to-20 mA current loop. The Transducers are mounted in a standard 6" x 6" electrical enclosure, and operate on low voltage (24 VDC).

All power and signal connections for the transducers are provided from the DVP-120 control panel, via unshielded four conductor cable. The DVP-120 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 .

NOTE:

1.Power connections at the sensor are non-polarized.

2.DVP-120 connections are representative of J7, J8, J10, J11, J13 and J14.

 

 

CM-2B

 

 

 

 

 

 

 

 

GT-11A

 

 

 

 

 

 

 

output

 

 

 

 

 

V

 

 

mA

 

 

 

power

 

 

 

 

 

 

 

 

 

output

power

B

A

 

 

 

 

output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D C -

+

 

 

- +

- +

D C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J7, J8,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J10, J11,

8

 

7

6

5

 

4

3

2

1

 

 

 

 

J13, L14

 

 

 

 

 

 

+24 V RET

 

-I LOOP

+I LOOP

+24 VDC

 

+24 V RET

-I LOOP

+I LOOP

+24 VDC

 

 

 

 

Main Fan Power

 

 

 

 

 

 

 

 

 

 

 

J2

 

 

 

 

 

 

 

 

 

 

 

 

MACURCO DVP-120

 

 

 

 

- Strobe

4

Exhaust Fans

coil

 

 

 

 

 

+ Strobe

3

 

GAS DETECTION AND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VENTILATION CONTROL PANEL

 

 

- Horn

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+ Horn

1

 

 

 

 

 

 

 

 

Relay 1

 

 

Relay 2

 

Relay 3

 

 

coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Panel Power

 

 

 

 

 

 

 

 

 

 

120 VAC

 

Gnd

120/250 VAC

N.C.

 

N.O.

COM

N.C.

N.O.

COM

N.C.

N.O.

COM

STARTER RELAYS

 

N

 

L

 

ALARM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120 VAC COILS

J4

1

 

3

1

 

2

3

4

5

6

7

8

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J2

120 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.Typical coverage for a CO sensor is 5000 sq. ft., 900 sq. ft. for combustible gasses. Extra sensors may be needed near areas where people work, such as toll booths.

2.Macurco provides only the control panels and sensors. Fans, relays, and other devices are provided by the contractor.

3.See the appropriate building code for the size of fans and air changes per unit of time.

exhaust fan

Typical layout in Parking Garage

Air inlet:

 

 

door, damper,

 

 

louvier

DVP-120

 

 

panel

 

 

CM-2B,

CM-2B,

CM-2B,

CM-3 or

CM-3 or

CM-3 or

SS102HC-1

SS102HC-1

SS102HC-1

 

space sensors equally,

 

 

mount 5 feet above floor

 

 

 

Air inlet:

exhaust fan

 

door, damper,

 

louvier

 

 

Figure 1-1 System Wiring Diagram

Revision 0.07

6

Page 5 Page 7
Page 6
Image 6
Macurco DVP-120 operating instructions System Wiring Diagram
Page 5 Page 7

DVP-120 specifications

The Macurco DVP-120 is an advanced gas detection sensor that is designed for various commercial and industrial applications. It provides real-time monitoring of hazardous gases, ensuring safety in environments where gas leaks can pose significant risks. The device is built with high-precision technology, allowing for accurate detection of gases such as carbon monoxide, methane, propane, and others.

One of the standout features of the DVP-120 is its dual-channel sensing capabilities. This allows the unit to simultaneously monitor two different gas types, which significantly enhances its versatility in diverse settings. Users can customize the device to target specific gases relevant to their operations, making it a highly adaptable tool for a variety of workplaces.

The DVP-120 utilizes state-of-the-art electrochemical sensors that deliver reliable and fast response times, allowing businesses to act quickly in the event of a gas leak. These sensors are known for their long lifespan and low maintenance requirements, thus reducing the total cost of ownership over time. Additionally, the sensor head is designed for easy replacement, further simplifying maintenance for users.

Another notable characteristic of the DVP-120 is its user-friendly interface. The device features an intuitive LCD display that provides clear readings, making it easy for operators to monitor gas levels at a glance. The display also includes alarm indicators, ensuring that users are alerted promptly in an emergency situation. The alarms can be configured with different sound levels and visual alerts to suit the needs of the environment.

Moreover, the Macurco DVP-120 is equipped with advanced connectivity options, including wired and wireless communication capabilities. This allows the device to be integrated into existing monitoring systems or networks, ensuring seamless operation alongside other safety equipment.

In terms of durability, the DVP-120 is built to withstand harsh environmental conditions. Its rugged housing is resistant to dust and moisture, making it suitable for use in industrial settings where exposure to various elements is a concern.

Overall, the Macurco DVP-120 is a comprehensive solution for gas detection and monitoring. With its combination of advanced sensing technology, user-friendly design, and robust construction, it stands out as an essential tool for ensuring the safety and efficiency of operations across various industries.
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