Bacharach MGD-100 Quick Start Guide

GAS DETECTOR and CONTROLLER

QUICK INSTALLATION GUIDE

P/N: 6109-9002

Revision 0

January 13, 2016

Standard

IP41 Sensor

Housing

1-2 Sensor
Controller Housing

CAUTION: DO NOT MOUNT the

MGD-100 in an area that may
contain flammable liquids or
vapors. Operaon of electrical
equipment in such an area cons­tutes a safety hazard.

WARNING: Strictly follow the
instrucons in the User Manual
(part number 6109-9000) available
at www.MyBacharach.com.

1: OPERATING AREA AND CONDITIONS

The Bacharach MGD-100 is an instrument for the

connuous monitoring of refrigerant, combusble,
and toxic gases. The system is available with one or
two levels of alarm, and consists of 1 to 6 remote gas
sensors connected to and powered by a controller.

The controller is powered by 12 VDC or 100-230 VAC
50-60 Hz (specified at me of order).

2: SAFETY INSTRUCTIONS

USER MANUAL: Before using this equipment,

carefully read and strictly follow the User Manual
(part number 6109-9000). The user must fully
understand and strictly observe the instrucons.
Use the equipment only for the purposes listed and
under the condions specified in that document.

CODE COMPLIANCE: Comply with all local and
naonal laws, rules and regulaons associated with
this equipment.

GENUINE PARTS: Use only genuine Bacharach spare
parts and accessories, otherwise proper funconing
of the equipment may be impaired.

TECHNICIAN USE ONLY: This unit must be installed
by a suitably qualified technician who will install this
unit in accordance with these instrucons and the
standards in their parcular industry/country. Opera­tors of the unit should be aware of the regulaons
and standards in their industry/country for the
operaon of this unit. These notes are only intended
as a guide and the manufacturer bears no responsi­bility for the installaon or operaon of this unit.

Failure to install and operate the unit in accordance
with these instrucons and with industry guidelines
may cause serious injury including death and the
manufacturer will not be held responsible in this
regard.

SAFE MOUNTING: This monitor must be connected
by a marked, suitably located and easily reached
switch or circuit-breaker as means of disconnecon.

3: WEIGHTS AND DIMENSIONS

Type/Enclosure Dimensions Weights

IP41

IP66

IP66 w/ Splash
Guard

IP66 w/ Remote
Sensor

IP66 w/ Ex d
Remote Head

IP66 w/ PRV
Sensor Head

IP66 Airflow/
Duct (See Table)

Ex d (Enclosure)

3.35” x 5.59” x 2.09”
86 x 142 x 53 mm

6.89” x 6.5” x 3.29”
175 x 165 x 82 mm

6.89” x 8.9” x 3.29”
175 x 225 x 82 mm

6.89” x 6.1” x 3.29”
175 x 155 x 82 mm

6.89” x 6.1” x 3.29”
175 x 155 x 82 mm

6.89” x 6.1” x 3.29”
175 x 155 x 82 mm

6.89” x 4.9” x 3.29”
175 x 125 x 82 mm

5.12” x 6.3” x 3.54”
130 x 160 x 90 mm

Supported CFM & Duct Sizes for Duct Mount Housing

Units

Inches

Feet

Area (ft2)

12 x 12 12 x 24 18 x 18 24 x 24 24 round

1 x 1

1 2 2.25 4 3.14

Duct Size

1 x 2 1.5 x 1.5 2 x 2 Pi x 1 x 1

6.3 oz
180 g

1 lb 6 oz
629 g

1 lb 9 oz
700 g

1 lb 11 oz
790 g

2 lb 10 oz
1185 g

2 lb 0.3 oz
916 g

1 lb 4 oz
578 g

9 lb 4 oz
4200 g

3.39 in (86.0 mm)

Standard
IP41 Housing

4: MOUNTING

ENVIRONMENTAL CONSIDERATIONS: Care-

0.28 in

(7.0 mm)

1.69 in (43.0 mm)

�

0.18 in

(4.50 mm)

2.09 in (53 mm)

fully consider the full range of environmental
condions to which the instruments will be
exposed.

�

0.35 in

(9.0 mm)

TARGET GAS CONSIDERATIONS: The physical
data of the gas or vapor to be detected must
be observed.

APPLICATION CONSIDERATIONS: The specifics
of the applicaon (for example, possible leaks,
air movement/dra, etc.) must be observed.

ACCESSIBILITY CONSIDERATIONS: The degree
of accessibility required for maintenance
purposes must be granted.

4.07 in (103.50 mm)

�

018 in

(4.50 mm)

4.72 in (120 mm)

ACCESSORY CONSIDERATIONS: The types of
oponal and accessory equipment that will be
used with the system must be kept in mind.

ELECTRONIC CONSIDERATIONS: The system
contains sensive electronic components that

0.31 in

(8.0 mm)

1.0 in

(25.00 mm)

1.4 in

(36.00 mm)

1.0 in

(25.00 mm)

can be easily damaged. Do not touch nor
disturb any of these components.

Mount the MGD-100 and Controller according
to the above consideraons, product dimen­sions (see Secon 3), maximum wiring lengths
(see Secon 5), and the corresponding mount-

Screw

0.2 in
(5.0 mm)

0.4 in (9.0 mm)

0.6 in
(15.5 mm)

2.0 in

(50.0 mm)

ing dimensions shown in the illustraons that
follow.

3.5 in

(90 mm)

5.4 in

(138 mm)

2 x Clearance for M6

Mounng Holes

4.8 in

(122 mm)

5.1 in

(130 mm)

Ex d Housing

5.9 in (151 mm)

5.1 in (130 mm)

6.3 in (160 mm)

0.6 in

(15.0 mm)

0.5 in (12.7 mm)

0.4 in (10.0 mm)

1-2 Sensor

Controller

Housing

2.9 in (74.5 mm)

10.26 in (260.50mm)

Mounng

Hole

Screw

0.2 in
(4.8 mm)

0.6 in (15.0 mm)

0.5 in (12.7 mm)

5.13 in (130.25 mm)

O 0.20 in (5.10 mm)

IP66 Housing

5.7 in

4.8 in
(123 mm)

mounng slots =

0.35 in (9mm) long x

4.0 in

0.24 in (6mm) wide

(101 mm)

Use 3/16-inch screws
(5mm - 6mm )

1.7 in

(42 mm)

2.3 in

(59 mm)

5.7 in

(146 mm)

(144 mm)

M42 thread

Exd Remote

Head

PRV/IP66
Vent Pipe

Monitoring 1

in BSP Head

1”BSP thread

9.47 in (240.50 mm)

8.85 in (224.70 mm)

4-6 Sensor

Controller Housing

O 0.18 in (4.60 mm)

9.55 in (242.50 mm)

5: WIRING

CABLE OPENINGS: The metal IP51 controller

housing provides a number of PG7 openings for
cable glands or plugs. Each MGD-100 IP41 transmit­ter will have a single opening for an M20 cable
gland, as well as an oponal knockout opening.
Each MGD-100 IP66 tranmier has 3 openings
These openings can be used for field wiring, direct
aachment of a sensor or wiring of a remote
sensor. Unused openings must be closed with a
suitable plug and gasket, maintaining the IP or Ex d
rang.

NOTE: To make wiring connecons,
you must first open the MGD-100
housing. The enclosure lid of the IP66
housing has four capve screws.

Refer to the User Manual (part number 6109-

9000) at www.MyBacharach.com for detailed
instrucons on accessing the internal components
for wiring.

WARNING: The mains power supply
cable should be of an approved type
based on local regulaons. Connec­on to the mains power supply
must be made via an approved,
readily-accessible, switched and
fused plug and socket (or as per
local wiring regulaons) which
should be within 10 feet (3 meters)
of the control unit.

SHIELD WIRE WARNING: Con-
nect the shield of the power wires
to the earth ground of the central
control system (e.g., chassis,
ground bus bar, etc.).

1: Strip 0.2 to 0.25 inches (5 to 7 mm)
of wiring insulaon.
2: Connect the wires as indicated.

NOTE: Aer wiring is completed,
carefully re-assemble the enclosure
and its components, nong the
keyed ribbon cable and sensor
connectors. Aer installaon is
complete, be sure to refer to the
User Manual (part number 6109-

9000) for detailed instrucons on
registering the sensors and configur­ing the MGD-100 for proper opera­on.

Volt Free
Alarm
Relay

Relay

NC COM NO

HIGH

SAFE

ON

B

m

r

a

l

A

FAIL

u

e

l

KEY

z

z

e

r

A

u

d

b

i

OFF

RED

RED

LED (Opt.)

Chan 2 Alm

SENSOR 2

ON OFF

SENSOR 1

ON OFF

Channel 2

(Oponal)

Channel 1

Chan 1

Alarm LED

GRN

Fuse 2

Fuse 1

Mains

Power

Controller PCB

MAINS

Transformer

12V

2 Channel 1 Alarm

50/60Hz

ON

NC COM NO

High Relay

RED

Chan 4

Alarm LED

Mains

Power

Horn
(12 VDC, 200 mA Max)

MAINS

Fuse

12V

PSU

+ 12V -

RED

GRN

Chan 1

Alarm LED

SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4 SENSOR 5 SENSOR 6

ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF

- SIREN +

Chan 2

Alarm LED

KEY

RED

REPLACE FUSE
WITH M205
T2AL250V

OFF

Chan 3

Alarm LED

Fuse

FAIL SAFE

RED

Key
Switch

RED

Chan 5

Alarm LED

500  (152 m) max;

22 AWG; Max 8.8Ω/wire

4-conductor cable (stranded);

Fail Safe Jumper Seng:

ON

ON: High Relay Is Normally
Energized (De-energized on
High Alarm or Mains
Failure Condion)

OFF

OFF: High Relay Is Energized
On Alarm (Energized on High
Alarm Condion)

To Lid

Ground

Connecon

Base Ground

Connecon

RED

Chan 6

Alarm LED

SC

SENSOR

IR Gas Sensor PCB

ON

OFF

ON

OFF

RV1

Jumper Seng:

Fail Safe

ON: High Relay Is
Normally Energized
(De-energized on
High Alarm or Mains
Failure Condion)

OFF: High Relay Is
Energized On Alarm
(Energized on High
Alarm Condion)

Relay
Output

Sensor Enable

Jumper Sengs:

ON: Sensor is
enabled for this
channel

OFF: Sensor is
disabled for this
channel

High Alarm

Relay

(Volt Free)

Low Alarm

Relay

(Volt Free)

Mains

Power

GRN

Relay 2

NC COM NO

HIGH

Relay 1

Fuse 2

Controller PCB

ON

m

r

a

l

NC COM NO

Fuse 1

FAIL
SAFE

u

B

A

e

l

LOW

KEY

RESET

SENSOR 2

ON OFF

RED

OFF

z

z

e

r

YEL

A

u

Chan 2 Alm LEDs (Opt.)

d

b

i

RED

SENSOR 1

ON OFF

Channel 2

(Oponal)

Channel 1

YEL

Chan 1 Alarm LEDs

GRN

MAINS

Transformer

12V

2 Channel 2 Alarm

Horn
(12 VDC, 200 mA Max)

MAINS

Fuse

12V

PSU

+ 12V -

YEL

RED

Chan 1

Alarm LEDs

SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4 SENSOR 5 SENSOR 6

ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF

- SIREN +

YEL

Chan 2

Alarm LEDs

KEY RESET

RED

REPLACE FUSE
WITH M205
T2AL250V

YEL

Chan 3

Alarm LEDs

Fuse

OFF

FAIL SAFE

RED

Mains

Power

Key
Switch

50/60Hz

ON

NC COM NO

NC COM NO

High Relay Low Relay Fault Relay

YEL

Chan 4

Alarm LEDs

YEL

RED

Chan 5

Alarm LEDs

RED

500  (152 m) max;

22 AWG; Max 8.8Ω/wire

4-conductor cable (stranded);

Fail Safe Jumper Seng:

ON

ON: High Relay Is Normally
Energized (De-energized on
High Alarm or Mains
Failure Condion)

OFF

OFF: High Relay Is Energized
On Alarm (Energized on High
Alarm Condion)

To Lid

Ground

Connecon

Push

Buon
Switch

Base Ground

Connecon

NO COM NC

YEL

RED

Chan 6

Alarm LEDs

SC Gas Sensor PCB

SC

SENSOR

RV1

IR Gas Sensor PCB

ON

OFF

ON

Fail Safe

Jumper Seng:

ON: High Relay Is
Normally Energized
(De-energized on
High Alarm or Mains
Failure Condion)

OFF: High Relay Is
Energized On Alarm
(Energized on High
Alarm Condion)

Relay
Outputs

Sensor Enable

Jumper Sengs:

ON: Sensor is
enabled for this
channel

OFF

OFF: Sensor is
disabled for this
channel

World Headquarters

621 Hunt Valley Circle

New Kensington, PA 15068 USA

Phone: [phone] • Fax: [phone]

Toll Free: 1-800-736-4666

Website: www.MyBacharach.com

E-mail: [e-mail]

114A Georges Street Lower

Dun Laoghaire • Co Dublin • Ireland

Phone: [phone] • Fax: [phone]

Repeat for sensor

channels 3 through

6 as required.

4-conductor cable (stranded) (6 places max);
500  (152 m) max; 22 AWG; Max 8.8Ω/wire

Ensure that connecons 1 to 4

RV1

on each sensor connect to their

corresponding numbers on the
terminal block in the main
alarm unit, otherwise the
system will not funcon
correctly and could be
damaged.

RV1

4-conductor cable (stranded) (6 places max);
500  (152 m) max; 22 AWG; Max 8.8Ω/wire

Ensure that connecons 1 to 4

on each sensor connect to their

corresponding numbers on the
terminal block in the main
alarm unit, otherwise the
system will not funcon
correctly and could be
damaged.

6 Channel 1 Alarm

Repeat for sensor

channels 3 through

6 as required.

6 Channel 2 Alarm