RKI Instruments Beacon 200 User manual

www.rkiinstruments.com
Beacon 200 Gas Monitor
Operator’s Manual
Part Number: 71-0059RK
Revision: F
Released: 3/31/16

ii • Product Warranty
Product Warranty
RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free
from defects in materials, workmanship, and performance for a period of
one year from date of shipment from RKI Instruments, Inc. Any parts found
defective within that period will be repaired or replaced, at our option, free
of charge. This warranty does not apply to those items, which by their
nature, are subject to deterioration or consumption in normal service, and
which must be cleaned, repaired, or replaced on a routine basis. Examples
of such items are as follows:
Warranty is voided by abuse including mechanical damage, alteration,
rough handling, or repair procedures not in accordance with the operator’s
manual. This warranty indicates the full extent of our liability, and we are not
responsible for removal or replacement costs, local repair costs,
transportation costs, or contingent expenses incurred without our prior
approval.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER
WARRANTIES AND REPRESENTATIONS, EXPRESSED OR IMPLIED,
AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF
RKI INSTRUMENTS, INC. INCLUDING BUT NOT LIMITED TO, THE
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL RKI INSTRUMENTS,
INC. BE LIABLE FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
LOSS OR DAMAGE OF ANY KIND CONNECTED WITH THE USE OF
ITS PRODUCTS OR FAILURE OF ITS PRODUCTS TO FUNCTION OR
OPERATE PROPERLY.
This warranty covers instruments and parts sold to users by authorized
distributors, dealers, and representatives as appointed by RKI Instruments,
Inc.
We do not assume indemnification for any accident or damage caused by
the operation of this gas monitor, and our warranty is limited to the
replacement of parts or our complete goods.
a) Absorbent cartridges d) Batteries
b) Pump diaphragms and valves e) Filter elements
c) Fuses

Table of Contents • iii
Table of Contents
Chapter 1: Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About the Beacon 200 Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
External Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Internal Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 3: Installation and Start Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Mounting the Beacon 200 Gas Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wiring the Beacon 200 Gas Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Starting Up the Beacon 200 Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Chapter 4: Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Recorder Output Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Alarm Indications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Viewing & Resetting Min/Max Readings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 5: Channel Control and Setup Program . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Enable/Disable Channel(s) Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Configure Channel Settings Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
View System Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

iv • Table of Contents
Chapter 6: Input Setup Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Setting Up a New Channel or Changing an Existing Channel . . . . . . . . . . . . . . 41
Chapter 7: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Calibration Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Replacing the Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Overview • 5
Chapter 1: Introduction
Overview
This chapter briefly describes the Beacon 200 Gas Monitor. This chapter
also describes the Beacon 200 Gas Monitor Operator’s Manual (this
document). Table 1 at the end of this chapter lists the specifications for the
Beacon 200.
About the Beacon 200 Gas
Monitor
The Beacon 200 is a fixed-mounted, continuous-monitoring gas detection
instrument. This gas monitor is capable of detecting gas at up to two
locations. The display screen simultaneously displays the gas readings of
the active channel or channels. Both direct connect (internal amplifier type)
detector heads and 4 - 20 mA transmitter (remote amplifier type) detector
heads may be used with the Beacon 200.
The Beacon 200 includes audible and visual alarms that warn you of
hazardous gas conditions. The alarm circuit includes two levels of gas
alarms. The fail circuit alerts you to failures in the gas detector heads or
Beacon 200.
Three instrument programs allow you to display and change channel and
calibration settings and change channel types. They are the Channel
Control & Setup Program, the Calibration Program, and the Input Setup
Program.

6 • About this Manual
About this Manual
The Beacon 200 Gas Monitor Operator’s Manual is organized as follows:
•Chapters 1 through 6 describe components of the Beacon 200 and
procedures to install, start up, operate, and maintain the Beacon 200.
The Beacon 200 Gas Monitor Operator’s Manual uses the following
conventions for notes, cautions, and warnings.
NOTE: Describes additional or critical information.
CAUTION: Describes potential damage to equipment.
WARNING: Describes potential danger that can result in injury or
death.
I Caution: refer to accompanying documentation
~ Vac (AC voltage)
Vdc (DC voltage)
!

Specifications • 7
Specifications
Table 1 lists specifications for the Beacon 200 Gas Monitor.
CAUTION: Cleaning is not to be performed.
CAUTION: The operator of this instrument is advised that if the equipment
is used in a manner not specified in this manual, the protection
provided by the equipment may be impaired.
Table 1: Beacon 200 Specifications
Description Specification
Input Power 115/220V ~ ±10%, 50/60Hz, 0.5/0.3A
or
24 V +10% -8%, 0.6A VDC
Construction (housing) Fiberglass/polyester with lexan window (NEMA 4X)
Dimensions 10.5 in. H x 8.5 in. W x 6.25 in. D
(267 mm H x 216 mm W x 158 mm D)
Weight 8 lbs.
Environmental Conditions • For indoor or outdoor locations (Type 4X)
• 2000m max. altitude
• -20°C to 50°C (-4°F to 122°F) max. ambient
• Maximum humidity of 80% relative
• Mains supply voltage fluctuations not exceeding ± 10% of nominal
• DC supply voltage fluctuations not exceeding +10% -8% of nominal
• Overvoltage Category II, Pollution Degree 2
Safety/Regulatory
C US
186718
Relays • Relay contacts rated for 10A @ 115/220V~resistive or 10A @ 30V
resistive
• SPDT Form C
User Controls • Reset switch
• Program buttons: ESCAPE, UP/YES, DOWN/NO, and ENTER
Standard Accessory Operator’s manual (this document)

8 • Overview
Chapter 2: Description
Overview
This chapter describes external and internal components of the Beacon
200 Gas Monitor.
External Description
This section describes the housing and all external components of the
Beacon 200. For the purposes of this description, the housing door is
considered the front of the monitor.
Housing
The Beacon 200’s fiberglass housing is weather- and corrosion-resistant. It
is suitable for installation where general purpose equipment is in use. The
housing door is hinged on the left side and is secured by two latches on the
right side. The display screen and status lights are visible through windows
in the housing door. Four mounting feet are attached to the back of the
housing (one at each corner). The mounting feet allow you to install the
housing to a vertical surface. Three conduit hubs on the bottom of the
housing are for external wiring connections.
CAUTION: To avoid electrical interference, do not route detector head and
power wiring through the same conduit hub.
Reset Switch
The reset switch is on the bottom of the housing. It is in front of the conduit
hubs. The reset switch serves three functions:
• Resets the alarm circuits for “latched” alarms after an alarm 1 or alarm 2
condition passes.
You can set each channel for latched or self-resetting alarms in the
Channel Control & Setup Program.
• Silences the buzzer during an alarm 1 or alarm 2 condition. You cannot
silence failure alarms.

Internal Description • 9
• Displays and resets the minimum and maximum gas concentration
values.
Buzzer
The buzzer is on the bottom of the housing. It is on the far right. The buzzer
sounds audible alarms to warn you of gas alarms and instrument failures.
Internal Description
This section describes the internal components of the Beacon 200.
Power
Switch
AC Fuses
Controller
Terminal
Strip
Buzzer
Alarm
Terminal
Strip
Alarm Relays
(see Figure 3)
DCFuse
Display PCB
(see Figure 2)
Main PCB
Reset Switch
3/4" Conduit
Hub,3X
Detector/Transmitter
Terminal Strip,
Channel 2
Detector/Transmitter
Terminal Strip,
Channel 1
Power
Supply
AC In
Terminal
Strip
Figure 1. Beacon 200 Gas Monitor Component Location

10 • Internal Description
Display Printed Circuit Board (PCB)
The display PCB is mounted to the power supply mounting plate which is in
turn mounted to the main PCB. The power supply mounting plate and main
PCB are described below. The display PCB includes the display, the status
lights, and the program buttons.
Display
The display simultaneously indicates the channel number, current gas
reading, measuring unit, and target gas of all active channels.
The display also indicates messages, settings, and other data when you
are operating the instrument programs.
ESCAPE
Button
UP/YES
Button
ENTER
Button
DOWN/NO
Button
Button Repeater
Buzzer
Display Screen
FAIL Light
PILOT Light
Display Cable Connector
J1
Display Contrast
Adjust Pot
ALARM 2 Light
ALARM 1 Light
Figure 2. Display Board Component Location

Internal Description • 11
Status Lights
The Beacon 200 includes four status lights that indicate the current status
of the monitor. The status lights are to the left and right of the display (see
Figure 2).
• Pilot Light. The pilot light is on when the Beacon 200 is receiving
incoming power.
• Fail Light. The fail light turns on when the Beacon 200 is experiencing
a fail condition. A fail condition can be caused by a failure within the
Beacon 200 or detector head(s) wired to the Beacon 200. See Chapter
5, Maintenance, or the troubleshooting section in the applicable
detector head manual to respond to a fail condition.
•Alarm 1 Light. The alarm 1 light is on when the Beacon 200 is
experiencing an alarm 1 gas condition.
•Alarm 2 Light. The alarm 2 light is on when the Beacon 200 is
experiencing an alarm 2 gas condition.
Program Buttons
The Beacon 200 includes four program buttons that allow you to enter the
instrument programs, navigate through the programs, update instrument
and channel settings, and save changes to the program settings. When a
program button is pressed, a buzzer located on the display PCB beeps.
The program buttons are near the right edge of the display PCB (see
Figure 2).
Table 2: Beacon 200 Program Button Functions
Button Function
ESCAPE • Moves backward through the program menus
• Cancels changes you make in the program menus
• Enters the Channel Control and Setup program (press with the ENTER button)
UP/YES • Accepts the displayed setting and proceeds to the next setting
• Changes the displayed setting
• Enters the Calibration program (press with the ENTER button)
DOWN/NO • Allows you to update the displayed setting
• Changes the displayed setting
ENTER • Saves changes you make in the programs
• Enters the Channel Control and Setup program (press with ESCAPE button)
• Enters the Calibration program (press with the UP/YES button)
• Enters the Input Setup Program (press while flipping power switch to ON position)

12 • Internal Description
Main PCB
The main PCB is mounted inside the housing. The power supply mounting
plate is mounted to the main PCB with four standoffs and the display PCB
is mounted to the power supply mounting plate with four standoffs. The
main PCB includes the terminal strips, relays, fuses, and power switch.
Terminal Strips
The Beacon 200 includes four terminal strips for external wiring
connections. See “Wiring the Beacon 200 Gas Monitor” for detailed wiring
procedures.
•Detector/Transmitter Terminal Strips. Two detector/transmitter
terminal strips are located near the bottom left corner of the main circuit
board (see Figure 1). These two 9-point terminal strips facilitate wiring
connections to the detectors or transmitters. Although each terminal
strip can accommodate several different detector head models, only
one detector head at a time may be wired per channel. The top terminal
strip is for channel 1 and the bottom terminal strip is for channel 2.
•Alarm Terminal Strip. The alarm terminal strip is located along the
bottom edge of the main circuit board (see Figure 1). This 21-point
terminal strips facilitates wiring connections to external alarm devices
(horn,strobe, etc.). Terminals are provided for individual channel as well
as common alarm relay contacts.
•Controller Terminal Strip. The 10-point controller terminal strip is near
the lower right edge of the main circuit board (see Figure 1). The
controller terminal strip facilitates various internal and external wiring
connections. Table 3 lists the function of each terminal.
Table 3: Terminal Assignments for the Controller Terminal Strip
Terminal Connects to:
BAT - - connection from 24 VDC power source1(or 24 V backup battery)
BAT + + connection from 24 VDC power source1 (or 24 V backup battery)
+ CH1 OUT + connection of 4 - 20 mA output, channel 1
- CH 1 OUT - connection of 4 - 20 mA output, channel 1
+ CH2 OUT + connection of 4 - 20 mA output, channel 2
- CH2 OUT - connection of 4 - 20 mA output, channel 2
RESET (2) Reset switch (factory-wired)
BUZ-/BUZ+ Internal buzzer (factory-wired)
1If DC power is used as the primary power source, do not make wiring connections to the AC terminal strip.

Internal Description • 13
•AC In Terminal Strip. The AC in terminal strip is a 2-point terminal strip
located above the controller terminal strip (see Figure 1). It facilitates
wiring from the AC power source. Table 4 lists the function of each
terminal.
NOTE: The AC power source’s ground wire must be connected to the
ground stud. See “Connecting the AC Power Source” on page 19
for instructions.
Relays
The Beacon 200 includes four channel relays (two per channel) and three
common relays. Both sets of relays are single-pole, double-throw (SPDT)
and are rated for 10 amps at 250 VAC (resistive).
NOTE: You can select normally energized (NE) or normally de-energized
(NDE) settings for each channel in the Channel Control and Setup
program. This section describes the default setting: normally de-
energized.
The alarm 1 and alarm 2 common relays are factory-set as NDE
and the fail common relay is factory-set as NE. The alarm 1, alarm
2, and fail common relays’ NE/NDE settings are not user-
adjustable.
•Channel Relays. The four channel relays are above the alarm terminal
strip (see Figure 1). These relays are dedicated to specific channels
and alarm levels.
For example, the channel 1, alarm 1 relay energizes if channel 1
recognizes an alarm 1 condition. Figure 3 below illustrates the
allocation of the channel relays
Table 4: Terminal Assignments for the AC In Terminal Strip
Terminal Connects to:
LINE Hot wire from AC power source.
NEUT Neutral wire from AC power source.

14 • Internal Description
NOTE: The alarm 2 channel relays may be set to operate as individual
channel fail relays. See the Configure Channel Settings section of
Chapter 5 for instructions.
•Common Relays. The three common relays, alarm 1, alarm 2, and fail,
are to the left of the controller terminalstrip (see Figure 1). These relays
are common for both channels.
For example, the alarm 1 common relay energizes if either channel 1 or
channel 2 recognizes an alarm 1 condition.
Fuses
There are three fuses that are used in the Beacon 200. Two of them are AC
fuses and one of them is a DC fuse.
•AC Fuses. The two fuses located directly to the left of the controller
terminal strip are the AC fuses. They cut off the incoming AC power in
the event of a short circuit or other electrical fault which causes a high
current draw in the Beacon 200. They are housed in vertical fuse
holders and are held in the holder by a quarter turn cover. They are
labelled as F2 (top fuse) and F3 (bottom fuse) on the PCB silk-screen
and are rated to 3 A, 250 V, 1/4 x 1 1/4”, fast acting.
•DC Fuse. The fuse located to the left of the power switch is the DC
fuse. It cuts off incoming DC power in the event of a short circuit or
other electrical fault which causes a high current draw in the Beacon
200. It is also housed in a vertical fuse holder and is held in the holder
by a quarter turn cover. It is labelled as F1 on the PCB silk-screen and
is rated to 6A, 250 V, 1/4 x 1 1/4”, fast acting.
K5 K6 K7
Channel 2, Alarm 1
Channel 1, Alarm 2
Channel 1, Alarm 1
K1 K2 K3
Common Alarm 1
Common Alarm 2
Common Fail
K4
Channel 2, Alarm 2
Figure 3. Beacon 200 Channel Relay Allocation

Internal Description • 15
Power Switch
The power switch is located above the relays and in between the AC and
DC fuses (see Figure 1). The power switch turns the incoming AC power
source on and off at the Beacon 200. When the switch is up, the power
switch is on.
NOTE: The DC power input has no on/off switch and is not affected by the
position of this switch.
Power Supply
The power supply is mounted to the power supply mounting plate which is
located behind the display PCB. The power supply mounting plate is
mounted to the main PCB with four standoffs. The power supply receives
the AC input from the external power source and converts it to a DC
voltage that is usable by the Beacon 200 circuitry.

16 • Overview
Chapter 3: Installation and Start Up
Overview
This chapter describes procedures to mount the Beacon 200 Gas Monitor,
make wiring connections to the monitor, and start up the monitor.
WARNING: Perform all installation and start-up procedures in a
“fresh air” environment (known to be free of combustible
gas, toxic gas, and of normal oxygen content). The
Beacon 200 is not in operation as a gas monitoring
system until the start-up procedure is complete.
Mounting the Beacon 200 Gas
Monitor
WARNING: Only authorized and properly trained personnel should
perform any mounting procedures.
Perform the following procedure to install the Beacon 200 at the mounting
site.
1. Select the mounting site. When you select the mounting site consider
the following factors:
• Is an AC or DC power source available?
• Is there enough room to open the housing door and make wiring
connections through the conduit hubs at the bottom of the housing?
• Are the display screen and status lights visible?
2. Close and latch the housing door.
3. Position the monitor on a vertical surface at eye level (4 1/2 to 5 feet
from the floor).
4. The Beacon 200 is shipped with the mounting feet positioned behind
the housing. Loosen the screws that secure the feet to the housing,
rotate the feet to their mounting position (as shown in Figure 4), then
tighten the screws.

Mounting the Beacon 200 Gas Monitor • 17
5. Insert 1/4 in. or 5/16 in. screws through the slots in the mounting feet at
each corner of the housing to secure the housing to the mounting
surface (see Figure 4).
6. Each of the door clamps has a feature for locking device installation. A
locking device that requires a tool to unlock must be installed in each
door clamp.
Mounting
Feet, 4X
Ø .38 x .50 slot, 4X
.41
6.00
8.50
ALARM 2
PILOT
FAIL
RESET
BEACON 200
GAS MONITOR
ALARM 1
10.5010.94
3/4 " Conduit Hub(3)
.80
Figure 4. Beacon 200 Gas Monitor Outline and Mounting Dimensions

18 • Mounting the Beacon 200 Gas Monitor
NOTE: AC ground
connection is m ade
to ground stud in
lower rightcorner
of circuitboard.
115V/220V~
+
COM-A1 COM-FAILCOM-A2
BAT
CH2-A1CH1-A2
Reset Switch
(Fa ctor y W ire d)
Buzzer
(Fa ctor y W ire d)
Oxygen
Detector
Channel 1Recorder
1K MaxImpedance
BUZ
Green
+
White
+S
LEL
OXYG ENAMP/P REAM P
NO NC C NO NC CNO NC CNO NC C NO NC C
CHANNEL 2
+S +
LEL
OXYG ENAMP/P REAM P
Typical Detector/Transmitter
Terminal StripWiring
Only one detector or transmitter canbe
wired to Ch1 orCh2 ata time. See detector
head wiring diagram for specific wiring.
BUZ +
RESET
RESET
CH2-A2
Typical Alarm Relay TerminalStrip Wiring
BAT +
AC In TerminalStripWiring
CH1
OUT
Line (Hot)
Neutral
Black
LEL Detector
Contact Rating of10 Ampsat 115/220V~
Resistive or 10A @ 30V Resistive for Each
SetofAlarmRelayContacts.
NO NC C
RW G B
Green
FB (4-20 mA) 2-Wire 4-20ma
Transmitter
+24V
3-Wire 4-20ma
Transmitter
- DC GROUND
FB (4-20 mA)
RW GB
+24V
Alarm Devices
Channel 2Recorder
1K MaxImpedance
CHANNEL 1CH2
OUT
+
White
Red
NO NC C
Controller Terminal
Strip Wiring
24V
CH1-A1
4- 20mAOut
4- 20mAOut
Alarm Device
Power
Figure 5. Beacon 200 Gas Monitor General External Wiring Diagram

Wiring the Beacon 200 Gas Monitor • 19
Wiring the Beacon 200 Gas
Monitor
WARNING: Only authorized and properly trained personnel should
perform any wiring procedures.
This section describes procedures to connect the AC power source, DC
power source, external alarm(s), recorder, and detector head(s). See
Figure 5 for a general wiring diagram of all external wiring to the Beacon
200.
WARNING: Make all connections to the Beacon 200 before you plug
in or connect mains power. Before you make any wiring
adjustments, always verify that mains power to the
Beacon 200 is turned off or disconnected.
Connecting the AC Power Source
NOTE: If you are using DC power as the primary power source, go to the
next section, “Connecting the DC Power Source.”
The AC In terminal strip will accept 24 - 14 AWG wire. For 115 VAC
connection, select wire that is rated to a minimum of 80°C, 0.75 A, and
150V. For 220 VAC connection, select wire that is rated to a minimum of
80°C, 0.5 A, and 250 V. When selecting wire, be sure to meet the local
electrical code.
A certified switch or circuit breaker must also be installed in the AC line. For
115 VAC connection, the switch or circuit breaker must be rated to 115
VAC, 50/60 Hz, and 0.5 A. For 220 VAC connection, the switch or circuit
breaker must be rated to 220 VAC, 50/60 Hz, and 0.3 A.
Perform the following procedure to connect the AC power source to the
Beacon 200.
WARNING: Verify that mains power to the Beacon 200 is turned off or
disconnected before you continue with this procedure.
1. Turn off or disconnect mains power to the Beacon 200.
2. Open the housing door, then place the power switch in the OFF
position.
3. Install an appropriately rated cable bushing or conduit to the right-most
conduit hub on the bottom of the Beacon 200 housing.

20 • Wiring the Beacon 200 Gas Monitor
4. Locate the 2-point AC In terminal strip (see Figure 1). The terminals
are labelled LINE and NEUT.
5. Guide the AC power cord or wires through the right-most conduit hub
on the bottom of the Beacon 200 housing.
CAUTION: Do not route power and detector head wiring through the same
conduit hub. The power wiring may disrupt the transmission of
the detector head signal to the monitor.
6. Connect the line (hot) and neutral AC wires to the AC power terminal
strip as shown in Figure 6.
7. Connect the ground wire to the unused crimp terminal that is factory
installed at the base of the ground stud.
a. Remove all installed connections (from conduit hubs and power
supply).
b. Remove the bottom lug.
c. Crimp the ground wire to the lug.
d. Reinstall the lug.
e. Reinstall all of the other ground connections (from conduit hubs and
power supply).
WARNING: Follow this grounding procedure to maintain the CSA
classification of the Beacon 200.
Line (Hot)
Neutral 115 V/220 V ~ ± 10%,
50/60 Hz
Disconnect Device
AC In Terminal Strip
Figure 6. AC Power Wiring