Macurco 1System Wiring Diagram, Engineer And Architect Specifications, MACURCO DVP-120, coil

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