Honeywell 301EM, 301EM-20 Operating Manual
301EM
MODULE D’EXPANSION
EXPANSION MODULE
Manuel d’utilisateur
User Manual
Gas Detection Device
301EM
User Manual
ERP 512720
2/09
Notices and Trademarks
Copyright by Honeywell International Inc.
Release 512720 February 2009
While this information is presented in good faith and believed to be accurate,
Honeywell disclaims the implied warranties of merchantability for a particular
purpose and makes no express warranties except as may be stated in its written
agreement with and for its customers.
In no event is Honeywell liable to anyone for any indirect, special or consequential
damages. The information and specifications in this document are subject to
change without notice.
Honeywell Analytics
4005 Matte Blvd, Unit G
Brossard, Quebec, Canada, J4Y 2P4
301EM User Manual iii
Symbol Definitions
The following table lists the symbols used in this document to denote
certain conditions:
Symbol Definition
ATTENTI ON: Identifies information that requires
special consideration
TIP: Identifies advice or hints for the user, often
in terms of performing a task
REFERENCE _ INTERNAL: Identifies an
additional source of information within the
bookset.
Indicates a situation which, if not avoided, may
CAUTION
result in equipment or work (data) on the system
being damaged or lost, or may result in the
inability to properly operate the process.
CAUTION: Indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert
against unsafe practices.
CAUTION: Symbol on the equipment refers the
user to the product manual for additional
information. The symbol appears next to required
information in the manual.
WARNING: Indicates a potentially hazardous
situation which, if not avoided, could result in
serious injury or death.
WARNING symbol on the equipment refers the
user to the product manual for additional
information. The symbol appears next to required
information in the manual.
301EM User Manual v
Contents
INTRODUCTION ..............................................................9
Description ............................................................................................... 9
Intended Use ............................................................................................9
Unpacking ................................................................................................ 9
INSTALLATION INSTRUCTIONS .................................10
Installation Guidelines .......................................................................10
Wall Mount Installation ......................................................................10
Recommended Sensor Installation Heights ...........................................11
Determining the Number of Transmitters ..........................................12
Range and Alarm Levels ........................................................................13
Installing Optional Remote Sensors .......................................................14
WIRING DETAILS ..........................................................16
System Wiring ...................................................................................16
Power Connections ................................................................................17
Connecting sensors to transmitter .........................................................18
Communication to Controller .................................................................19
Relay Outputs ........................................................................................19
24 Vdc Output ........................................................................................20
4-20 mA Configuration ...........................................................................20
4-20 Output Configuration ......................................................................22
CALIBRATION / PROGRAMMING ................................ 27
User Interface ....................................................................................27
Operating Mode .....................................................................................27
Pushbutton Definitions ...........................................................................28
Programming the Unit ........................................................................29
Accessing the Programming Menus ..................................................30
Setting the Unit’s Address .................................................................31
Configuring a Sensor .........................................................................32
Changer the Sensor Address .................................................................32
Adding a new Sensor .............................................................................33
Removing a Sensor ...............................................................................34
301EM User Manual vii
Adding Remote Panels ......................................................................34
Using the Service Menu ....................................................................35
Using the SetEvent Menu ..................................................................36
Changing Event Configurations .............................................................37
Using the SetRelay Menu ..................................................................40
Deactivating the Buzzer .....................................................................41
Configuring the Unit’s Alarms ............................................................42
Setting the Unit’s Analog Outputs ......................................................43
Calibrating the Unit ............................................................................44
Connecting the Hardware ......................................................................44
Adjusting the Zero (If Required) .............................................................45
Calibrating the Sensor ...........................................................................46
301EM Specifications ......................................................................48
301IRFS Specifications .....................................................................49
Maintenance ......................................................................................51
Replacement Parts ................................................................................51
Cleaning .................................................................................................51
APPENDIX A ..................................................................52
Available Pre-programmed configurations ........................................52
Type 1 CND (B-52 Canadian Standard for R123) .................................52
Type 2 CND (B-52 Canadian Standard for other Refrigerants) .............52
Type 3 US (ASHRAE 15 Standard for Refrigerants) .............................53
Type 4 (Default configuration - other than B-52 and ASHRAE 15) ........54
LIMITED WARRANTY ................................................... 55
Limited Warranty ....................................................................................55
Re-Stocking Policy .................................................................................55
Exclusions ..............................................................................................56
Warranty Limitation and Exclusion .........................................................56
Disclaimer of Unstated Warranties ........................................................57
Limitation of Liability ...............................................................................57
viii 301EM User Manual
Introduction
Introduction
Description
Honeywell introduces a breakthrough innovation in refrigerant, toxic and
combustible gas monitoring as part of our continued commitment to
cutting-edge technology and customer satisfaction.
The result of extensive research and design, the 301EM uses the latest in
infrared technology. The 301EM can have up to 20 sensors connected to
allow for accurate monitoring of even the lowest gas concentration.
The 301EM (with an LCD display and keypad) can be installed in a
location separate from the detection area, making it safer to monitor gas
readings.
The 301EM also offers 4-20mA outputs, relay outputs, Modbus
communication, audible alarm options and is compatible with our 301C
controller.
Intended Use
The availability and costs associated with refrigerant gases make
monitoring a necessity for managing equipment rooms. A Honeywell
refrigerant detector provides early warning of refrigerant leaks, which
enhancing the refrigerant conservation strategy by monitoring
equipement room refrigerant gas concentrations. Toxic and combustible
sensors can be linked to the 301EM, allowing it to meet the broadest
range of customer requirements. The 301EM Expansion Module has
been carefully designed with several factory programmed configurations
that meet or exceed ASHRAE B-52 or 15-2201 standards.
Unpacking
After opening the package, remove the equipment and components.
Please make sure that all the items described on the order form or bill of
lading are actually in the box and are undamaged.
301EM User Manual 9
Installation Instructions
Installation Guidelines
Installation Instructions
Installation Guidelines
These guidelines must be strictly observed to ensure that the equipment
will work properly. If they are not applied, Honeywell will not recognize any
liability in case of improper operation:
Make sure to locate all units easily accessible for proper service.
• Avoid any location where units could be subject to vibrations.
• Avoid any location close to any electromagnetic interference.
• Avoid any location where there are large temperature swings.
• Verify local requirements and existing regulations which may affect
the choice of location.
Wall Mount Installation
We recommend installing the
monitor at a height of 1.5 m
(4.9 ft) from the ground (eye
level).
• Mark two holes 162mm (6
3/8”) apart in height
• Mark two holes268.3mm
(10 9/16”) apart in width
• Drill 6.35mm (1/4”) holes
and prepare as necessary
• Mount unit with appropriate screws
Remember to pass all wiring through knock-outs at base of unit, using the
appropriate conduit.
10 301EM User Manual
Installation Instructions
Wall Mount Installation
Recommended Sensor Installation Heights
The installation heights recommended represent general guidelines.
Always confirm with local laws and regulations before proceeding, as
these take precedence over manufacturer's recommendations.
Detected Gas
CO Carbon Monoxide 0.968 1 - 1.5 m (3 - 5 ft.) from floor
*NO2 Nitrogen Dioxide 1.58 (cold) 30 cm -1 m (1-3 ft.) from ceiling
H2 Hydrogen 0.07 30 cm (1 ft.) from ceiling
CL2 Chlorine 2.50 30 cm (1 ft.) from floor
H2S Hydrogen Sulfide 1.19 30 cm (1 ft.) from floor
O2 Oxygen 1.43 1 - 1.5 m (3 - 5 ft.) from floor
HCL Hydrogen Chloride 1.30 30 cm (1 ft.) from floor
HCN Hydrogen Cyanide 0.932 30 cm (1 ft.) from ceiling
ETO Ethylene Oxide 1.50 30 cm (1 ft.) from floor
SO2 Sulfur Dioxide 2.25 30 cm (1 ft.) from floor
R11 Refrigerants 5.04 30 cm (1 ft.) from floor
R12 Refrigerants 4.20 30 cm (1 ft.) from floor
R13B1 Refrigerants 5.14 30 cm (1 ft.) from floor
R114 Refrigerants 5.9 30 cm (1 ft.) from floor
R22 Refrigerants 3.11 30 cm (1 ft.) from floor
R123 Refrigerants 5.27 30 cm (1 ft.) from floor
R125 Refrigerants 4.14 30 cm (1 ft.) from floor
R134A Refrigerants 3.52 30 cm (1 ft.) from floor
R227 Refrigerants 5.90 30 cm (1 ft.) from floor
R245A Refrigerants 30 cm (1 ft.) from floor
R404A Refrigerants 3.43 30 cm (1 ft.) from floor
R407C Refrigerants 3.0 30 cm (1 ft.) from floor
R410A Refrigerants 3.0 30 cm (1 ft.) from floor
R507 Refrigerants 3.43 30 cm (1 ft.) from floor
R508b Refrigerants 30 cm (1 ft.) from floor
COMB Most combustibles are heavier than air, with the exception of methane,
hydrogen,ethylene and acetylene. Sensors for gases that are heavier than
air should be installed approximately 30 cm (1 foot) from the floor. For
combustibles that are lighter than air, sensors should be installed 30 cm (1
foot) from the ceiling, close to the potential leak source.
Relative Density
(air = 1)
Installation Height
* May differ in certain applications. Hot NO2 from exhaust systems is lighter than ambient air.
301EM User Manual 11
Installation Instructions
Determining the Number of Transmitters
Determining the Number of Transmitters
The number of units required to protect an area is determined by the
unit’s detection radius, which depends on the type of gas detected, as
shown in the following table.
Gas Detected
CO Carbon monoxide 15 m (50 ft)
NO2 Nitrogen dioxide 15 m (50 ft)
Others 7 m (23 ft)
Surveillance
Radius
Area Covered
2
707 m
(7610 ft2)
2
707 m
(7610 ft2)
154 m2 (1658 ft2)
12 301EM User Manual
Installation Instructions
Determining the Number of Transmitters
Range and Alarm Levels
Gas Detected Range Alarm A Alarm B Alarm C
CL2 Chlorine 0-15 ppm 0.5 ppm 1 ppm 13,5 ppm
CO Carbon monoxide 0-250 ppm 25 ppm 200 ppm 225 ppm
2S Hydrogen sulfide 0-50 ppm 10 ppm 15 ppm 45 ppm
H
2 Nitrogen dioxide 0-10 ppm 0.72 ppm 2 ppm 9 ppm
NO
O
2 Oxygen 0-25% Vol. 19.5% Vol. 22% Vol. 22,5% Vol.
SO2 Sulfur dioxide 0-10 ppm 2 ppm 5 ppm 9 ppm
R-123 Refrigerant 0-1000 ppm 50 ppm 500 ppm 900 ppm
R-11 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R-12 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R13B1 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R114 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R-22 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R-125 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R134A Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R227 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R245A Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R404A Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R407C Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R410A Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R507 Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
R508b Refrigerant 0-1000 ppm 250 ppm 500 ppm 900 ppm
Comb Combustibles 0-100% LEL 25% LEL 50% LEL 90% LEL
A different alarm level may have been programmed in order to satisfy the
constraints of a particular application.
Deadband and Accuracy
(Refrigerant detection)
The deadband is the area of signal or detection range where no action
occurs. The IRF deadband is 20 ppm.
301EM User Manual 13
Installation Instructions
A
(white)
Power Comm.
sensor #5
sensor #6
sensor #7
sensor #8
External
Power
Supply
To next
sensors
B
(green)
V+ (red)
V- (black)
HPTV5DC8,
Input: 115 VAC 1A,
Output: 4.0A@6 and
12VDC, 2.5A@
24VDC
From
301EM
Determining the Number of Transmitters
Installing Optional Remote Sensors
301IRFS Sensor
The refrigerant sensor should be installed at the recommended height,
which is 30 cm (1 foot) from the floor.
Communication cables should be 2-24
AWG, twisted and shielded (Belden 9841
or equivalent), which should be connected
in a daisy chain from the 301EM (as
shown).
Power cables should be 14 AWG cable,
maximum length of 60 m (200 ft). The first
four sensor power cables may be wired
directly to the 301EM. Additional sensors
require an external power supply (one per
group of four sensors, to a maximum of 20
sensors in total), using the same rated
cable as units wired to the 301EM.
14 301EM User Manual
Installation Instructions
Monitor
Shielding must be grounded at the terminal
This housing not included
Calibration tubing
Thread dimension
3/4
Determining the Number of Transmitters
S301D2 Remote Sensor
The drawing below illustrates the connection for a 301D2 sensor with the
D2RS-PC option.
Communication: Use 224 AWG, twisted and
shielded cable (Belden
9841 or equivalent)
Power: Use 2-18 AWG
cable, maximum length of
160 m (500 ft).
301EM User Manual 15
WIRING DETAILS
Contact
input
LCD screen
J8 J9
EOL Positions
Disabled
R
RC
GND BLACK WHITE
GREEN
ABAB
A
B
SHIELD
+-+-
J10
J1
6
J17
OUT #1
OUT #2
OUT #3
4@20
(4)
4@20
(3)
4@20
(2)
4@20
(1)
+ 4@20
- 4@20
N.O. N.C. N.O. N.C.
N.O.
N.C.
N.O.
N.C.
J6
J1
+VDC RED
V+
V+ V-
V-
24 IN
24
IN
DOWN
SW8
ESC
SW6
UP
SW2
ENTER
SW7
SW3
FAN
SW4
RESET
SILENCE
SW1
Sensor #1 IRF
ABV+ V-
Terminal J17
see page 20 for complete sensor wiring details
J13 J14
Terminals J8, J9
see pages 22, 25 and 27
for complete 4-20 wiring
details
Terminals J13, J14, J1, J6
See page 21 for complete
relay wiring instructions
Terminal J10
Used for communication
connections to a control
unit (such as 301C)
Terminal J16
Used (normally) to
connect a breakglass
switch (see page 23)
Sensor #2 GasPoint2
System Wiring
WIRING DETAILS
System Wiring
Both GasPoint II (301D2) and IRFS sensors can be linked to the 301EM
system. The drawing below illustrates an overview of PCB terminal
wiring.
.
16 301EM User Manual
Power Connections
+VDC RED
V+ V-
24
IN
24
IN
The power requirement range is 22-27
Vac, 29-38 Vdc, 2.0 A max. The polarity is
not important. The system must be
grounded on the transformer.
A dedicated circuit-breaker must be
used.
Separate power supplies must be
provided for each group of 4 sensors
The 301EM requires a 100VA transformer that must be
installed near the unit to prevent voltage loss. If there is no
CAUTION
transformer, or if the transformer capacity is insufficient, 24
Vdc outputs will not have sufficient power, which will have an
impact on RFS/RFSA and other device options.
WIRING DETAILS
System Wiring
301EM User Manual 17
WIRING DETAILS
GND
BLACK
WHITE
GREEN
A
B
J17
+VDC RED
V+
V-
24
IN
sensor #3
S
e
n
s
o
r
#
1
S
e
n
s
o
r
#
2
S
e
n
s
o
r
#
3
S
e
n
s
o
r
#
4
A
(white)
Power Comm.
sensor #5
sensor #6
sensor #7
sensor #8
External
Power
Supply
To next
sensors
sensor #1
sensor #4
POWER:
Maximum 4 power
connections direct to unit.
Additional power sources
required for every group of 4
sensors.
COMMUNICATION:
Communication must be
connected in daisy chain
configuration.
B
(green)
V+ (red)
V- (black)
A
sensor #2
HPTV5DC8,
Input: 115 VAC 1A,
Output: 4.0A@6 and
12VDC, 2.5A@ 24VDC
System Wiring
Connecting sensors to transmitter
Connect the sensor to the transmitter as shown in the diagram below. The
maximum distance between sensor and power supply is 200 ft. (60 m) for
refrigerant and 500 ft. (160 m) for toxic and combustible gases. Color
coding (black, red, green, white) must be respected.
The first four sensors can be connected directly to the 301EM. Additional
sensors must have external power supplies (T300VA, 120/24Vac-300VA
Transformer) for every group of 4 sensors and communication must be in
daisy-chain connection
Note: Use 2-18 AWG wire gauge for toxic and explosives sensor power
wiring. Use 14 AWG wire gauge for refrigerant sensor power
wiring.
18 301EM User Manual
WIRING DETAILS
Previous
Next
Contact
input
J16
Communication Wire Gauge:
2-24 AWG (Belden 9841)
Twisted and shielded cable
2000 feet (600 m) per channel
T-tap: 65 feet (20 m) / T-tap
130 feet (40 m) total
COMMUNICATION
SHIELD A B A B
J10
N.O. N.C.
N.O. N.C.
N.O.
N.C.
N.O.
N.C.
RELAY OUTPUTS
3+5
4+6
1+3
2+4
Normally
open
Normally
closed
5
31
642
System Wiring
Communication to Controller
Terminal J10 is for communication connections from the 301EM to the
301C Controller. The cables must be grounded using the shield terminal.
The network can be up to 2000 ft. (609 m) per channel. The length of a Ttap can be a maximum of 65 feet (20 m). A maximum of 130 ft. (40 m) for
all the T-taps must be respected.This diagram illustrates network
communication wiring on terminal J10; wires come in from a previous
device and go out to the next device.
Relay Outputs
The relay outputs will withstand up to 5 amps
at 30 Vdc or 250 Vac (resistive load only).
They can be used to activate horns, strobes,
etc. Refer to the drawing for proper wiring.
Failsafe Relay Outputs
When power is applied to the 301EM, these
relays are also powered up. The devices
connected to these outputs will be triggered
when power is cut, which allows detection of
power failures or interruptions.
The 301EM is factory configured in Normal
mode, which means that the relay outputs
are not in failsafe mode.
See the APPENDIX section for more details about B-52 and
ASHRAE 15 standard configurations.
301EM User Manual 19
WIRING DETAILS
Contact
input
J8 J9
RFS
RFSA
System Wiring
24 Vdc Output
The three 24 Vdc / 250 mA outputs are provided to activate DC horn,
strobe, etc.
Note: Terminal connectors labeled OUT #1 and OUT #2 must be
dedicated to RFSA use only, if applicable.
Terminal connector labeled OUT #3 must be used for RFS only, if
applicable.
RFS: Optional built-in stobe
RFSA: Optional built-in stobe and horn
4-20 mA Configuration
Output 4-20 mA, J9
The 4-20 mA output option will provide a real time analog readout of the
gas concentration read by the 301EM for each of its sensors. It can be
connected to a third party controller, DDC, BMS, etc.
Polarity must be observed.
CAUTION
20 301EM User Manual
Do not apply electrical power to the 301EM until all
connections are made. Significant damage can result from
incorrect wiring.
Contact Input, J16
Contact 1
Contact 2
J16
The contact input is mainly used to connect a
manual break glass switch to comply with the
mechanical code. It is also possible to
connect a third break glass switch in series if
needed.
The drawing illustrates the ASHRAE 15
configuration where:
Contact 1 = Electrical shut down (ASHRAE 15
config.)
Contact 2 = Fan activation (ASHRAE 15 config.)
WIRING DETAILS
System Wiring
301EM User Manual 21
WIRING DETAILS
System Wiring
4-20 Output Configuration
4-20 mA Current Sourcing Output Configuration
The transmitter supplies the loop current. The maximum impedance
supported by the loop is 400 ohms. Set jumpers on JP4 at 1-2, 3-4 and 5-
6.
A dedicated power supply must be used with each 301EM.
CAUTION
22 301EM User Manual
Considerable damage may occur if this condition is not strictly
followed.
Current Sourcing Output Configuration
DDC SYSTEM
24 VAC
24 VAC
24 VAC
24 VAC
4-20 mA
4-20 mA
- MORE THAN ONE TRANSMITTER CONNECTED
- ONE TRANSMITTER CONNECTED
LEGEND
TRANSMITTER 1
TRANSMITTER X
J9 J9J16J16
V+
V-
V+
V-
+4@20
-4@20
+4@20
-4@20
Sensor #1
Sensor #2
Sensor #3
Sensor #4
Sensor #1
Sensor #2
Sensor #3
Sensor #4
WIRING DETAILS
System Wiring
301EM User Manual 23
WIRING DETAILS
System Wiring
Output Loop-Powered Operation
(Factory Setting)
The 4-20 mA output is factory set for loop-powered operation and
requires a power source of 12 Vdc to 30 Vdc. The overall impedance
depends on the voltage supplied at the 4-20 mA loop. Set jumpers on
JP4 at 2-3, 4-5 and 6 for this type of configuration.
Permitted Impedance in the 4-20 mA Loop
Voltage Source Applied Total Impedance
12 Vdc 400 Ohms
16 Vdc 600 Ohms
20 Vdc 800 Ohms
24 Vdc 1,000 Ohms
30 Vdc 1,300 Ohms
24 301EM User Manual
3 Wire Configuration
DDC SYSTEM
24 VDC
24 VAC 24 VAC 4-20 mA4-20 mA
MORE THAN ONE TRANSMITTER CONNECTED
ONE TRANSMITTER CONNECTED
LEGEND
TRANSMITTER 1
TRANSMITTER X
J9 J9J16J16
V+
V-
V+
V-
+4@20
-4@20
+4@20
-4@20
Sensor #1
Sensor #2
Sensor #3
Sensor #4
Sensor #1
Sensor #2
Sensor #3
Sensor #4
DDC SYSTEM
24 VDC
24 VAC 24 VAC 4-20 mA4-20 mA
- MORE THAN ONE TRANSMITTER CONNECTED
- ONE TRANSMITTER CONNECTED
LEGEND
TRANSMITTER 1
TRANSMITTER X
24 VAC
J9 J9J16J16
V+
V-
V+
V-
+4@20
-4@20
+4@20
-4@20
Sensor #1
Sensor #2
Sensor #3
Sensor #4
Sensor #1
Sensor #2
Sensor #3
Sensor #4
4 Wire Configuration
WIRING DETAILS
System Wiring
301EM User Manual 25
Programming and Calibration
User Interface
Programming and Calibration
User Interface
When power is initially applied, the unit’s LCD screen will display the
product’s name and firmware version.
Operating Mode
Normal Mode When the 301EM is in Normal mode, no user
intervention is required. The display will scroll to
display (gas and concentration) readings from up to 20
sensors. The Tx LED will blink when there is a
transmission on the communication channel (if the unit
is connected to a controller)
Alarm Mode Red LEDs light according to the alarm level detected
(Alarm A, B or C). If the unit is equipped with a horn or
strobe, these will also be activated with the
corresponding alarm.
Fault Mode If a sensor has communication problems, the yellow
Fault LED lights. This LED will also light when the
service alarm is activated.
Programming The programming mode is password protected.
Mode Only qualified technicians should access this mode.
The enter key provides access to programming and
confirms an entry, while the arrow keys allow
technicians to increase or decrease values and scroll
throughout the menus.
301EM User Manual 27
Programming and Calibration
User Interface
Pushbutton Definitions
The 301EM has “pushbuttons” that serve as an interface to the unit’s
programming functions. Below is a description for each button’s function:
Key Description
Used to exit the menus or cancel an input. Also used to
stop the alternating reading between the connected
sensors.
Used to scroll through the sensor data displays or through
menus or to change a specific value.
Serves as an “enter” key and is used to access a
programming field or to confirm a specific value.
Fan start switch (For B-52 or ASHRAE 15 programming).
See the Events table
Used to reset all outputs after system returns to normal
operating mode (linked to the Reset function in the Events
menu).
Turns off the buzzer and horns
28 301EM User Manual
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