ENGLISH
TABLE OF CONTENTS VA301EM
1. INTRODUCTION
1.1 DESCRIPTION........................................................................................................3
1.2 INTENDED USE.....................................................................................................3
1.3 UNPACKING...........................................................................................................3
2. INSTALLATION INSTRUCTIONS
2.1 INSTALLATION GUIDELINES ...............................................................................4
2.2 SURFACE-MOUNT INSTALLATION ......................................................................4
2.3 DETERMINING THE NUMBER OF TRANSMITTERS ..........................................5
2.4 OPTIONAL REMOTE SENSOR MOUNTING........................................................6
3. WIRING DETAILS
3.1 SYSTEM WIRING ...................................................................................................7
3.1.1 POWER .....................................................................................................8
3.1.2 CONNECT SENSOR TO TRANSMITTER ................................................8
3.1.3 COMMUNICATION..................................................................................9
3.1.4 RELAY OUTPUTS.....................................................................................9
3.1.5 Output 24 Vdc, J8....................................................................................10
3.2 4@20mA CONFIGURATION..............................................................................10
3.2.1 Contact/4@20mA Input, J16 .................................................................10
3.2.2 Contact Input.........................................................................................10
3.2.3 4@20 OUTPUT CONFIGURATION .....................................................11
4. CALIBRATION / PROGRAMMING
4.1 USER INTERFACE ................................................................................................14
4.2 OPERATING MODE.............................................................................................14
4.3 KEY DEFINITION ................................................................................................15
4.4 SPECIFICATIONS.................................................................................................16
4.4.1 TRANSMITTER VA301EM ......................................................................16
4.4.2 SENSOR VA301IRFS...............................................................................17
4.4.3 SENSOR VA301D2..................................................................................17
4.5 RANGE AND ALARM LEVELS..............................................................................18
5. MAINTENANCE
5.1 PERIODIC INSPECTIONS AND CALIBRATION.................................................19
5.2 REPLACEMENT PARTS ........................................................................................19
5.2.1 LED REPLACEMENT INSTRUCTIONS..................................................19
5.3 CLEANING............................................................................................................19
6. APPENDIX
6.1 AVAILABLE PRE-PROGRAMMED CONFIGURATIONS ...................................20
TABLE OF CONTENTS VA301EMRP .........................................................25
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1. INTRODUCTION
1.1 DESCRIPTION
In continuing with its commitment towards cutting-edge technology and customer satisfaction, Vulcain introduces a breakthrough innovation in Refrigerant, toxic and
Combustible Gas Monitoring.
The result of extensive research and design, the VA301EM uses the latest in infrared
technology. The remote sensor allows for accurate monitoring of the lowest gas
concentration. This sensor can be placed at a distance of up to 500 feet for toxic and
combustible gas monitoring and 200 feet for refrigerant gas monitoring from the
transmitter.
The transmitter is equipped with a backlight LCD display and keypad that can be placed
at eye level and in a different location from the refrigerant gas reading area. Thus allowing the monitoring from a safe and remote location.
Furthermore, it offers 4@20mA outputs, relay outputs, Modbus communication, audible alarm options and it is compatible with our VA301C controller.
1.2 INTENDED USE
Refrigerant availability and increasing refrigerant cost makes refrigerant surveillance
a necessity for people managing equipment rooms. Having a Vulcain refrigerant
monitor provides early warning of refrigerant loss, enhancing a refrigerant conservation strategy while indicating mechanical equipment room refrigerant concentrations. Moreover, toxic and combustible sensors can be tied in the VA301EM to meet
the broadest range of customer requirements. Available in a special configuration,
the VA301EM Expansion Module has been carefully designed to meet and even
exceed the B-52 and ASHRAE 15-2001 standards.
1.3 UNPACKING
After opening the package, remove the equipment and components. Please make
sure that all the items described on the order form or packing slip are actually in
the box and are undamaged.
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2. INSTALLATION INSTRUCTIONS
2.1 INSTALLATION GUIDELINES
These guide lines must be strictly observed to assure that the equipment will work
properly. If they are not applied, Vulcain 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 witch may affect the
choice of location.
2.2 SURFACE-MOUNT INSTALLATION
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VA301EM - VA301EMRP USER’S MANUAL
Table 1
Recommended Height
Detected Gas
Relative Density
(air = 1)
Installation Height
CO
Carbon Monoxide
*NO2 Nitrogen Dioxide
H2
Hydrogen
CL2
Chlorine
H2S
Hydrogen Sulfide
O2
Oxygen
HCL Hydrogen Chloride
HCN Hydrogen Cyanide
ETO Ethylene Oxide
SO2
Sulfur Dioxide
R11
R12
R22
Refrigerants
R123
R125
R134A
0.968
3 - 5 ft. (1 - 1.5 m) from floor
1.58 (cold)
1 - 3 ft. (30 cm to 1 m) from ceiling
0.07
1 ft. (30 cm) from ceiling
2.50
1 ft. (30 cm) from floor
1.19
1 foot (30 cm) from floor
1.43
3 - 5 ft. (1 - 1.5 m) from floor
1.30
1 foot (30 cm) from floor
0.932
1 ft. (30 cm) from ceiling
1.50
1 foot (30 cm) from floor
2.25
1 foot (30 cm) from floor
5.04
4.20
3.11
1 foot (30 cm) from floor
5.27
4.14
3.52
Most combustibles are heavier than air, with the exception of methane, hydro
gen,ethylene and acetylene. For gases that are heavier than air, sensors should be
COMB 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.
* May differ in certain applications. Hot NO2 from exhaust systems is lighter than
ambient air.
2.3 DETERMINATION OF THE NUMBER OF TRANSMITTERS
The number of units required to protect the area is determined by the radius of coverage of the unit. This radius depends on the gas to be detected and is given by
Table 2.
Table 2
Radius of Surveillance
Gas Detected
CO
Carbon Monoxide
NO2
Nitrogen Dioxide
Others
VA301EM - VA301EMRP USER’S MANUAL
Radius of
Surveillance
Area Covered
50 ft.
(15 meters)
7,854 square ft.
(707 square meters)
23 ft.
(7 meters)
1,257 square ft.
(154 square meters)
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2.4 OPTIONAL REMOTE SENSORS MOUNTING
VA301IRFS REMOTE SENSOR
Communication cable gauge:
24 AWG Belden # 9841
Power supply cable gauge: 14 AWG
Maximum lenght: 200 ft. (60 m)
S301D2 REMOTE SENSOR
This box is not provided.
The shield must be
grounded.
Communication cable gauge:
24 AWG Belden # 9841
Power supply cable gauge: 18 AWG
Maximum lenght: 500 ft. (160 m)
Thread diameter: 3/4 NPT
Sensor
with D2RS-PC option
Monitor
Calibration
tubing
The monitor and calibration tubing
must be accessible to maintenance services.
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3. WIRING DETAILS
3.1. SYSTEM WIRING
IRFS SENSOR
S301D2 SENSOR
with D2RS-PC option
Power:
J17
22 to 27 Vac,
29to 38 Vdc,
2.0 A max
End of line:
JP1 To determine a transmitter
to be the last in the network,
place the jumper in an upright
aligned with the top
Communication Shield
4@20 mA: J9
Input Contact: J16
Input for manual switch
Communication: J10
Length of line: Up to 2000 feet (600 m) from controller
T-tap
: 65 ft. (20 m) maximum per t-tap
130 ft. (40 m) total
From controller or previous unit
To next unit if applicable.
VA301EM - VA301EMRP USER’S MANUAL
Relay Output:
J13, J14, J1, J6
5 A, 30 Vdc
or 250 Vac
(resistive load)
7
Output 24 Vdc: J8
Three 24 Vdc outputs (can be use to
activate horn, strobe, etc.)
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3.1.1 Power:
The power requirement range is 22-27 Vac, 29-38
Vdc, 2.0 A max. In both AC or DC mode, the polarisation is not important. The system must be
grounded on the transformer. A dedicated circuit-breaker should be used.
TERMINAL DESCRIPTION (SCHEMATIIC)
=
=
=
3.1.2 Connect sensor to transmitter:
Connect the sensor to the transmitter using the diagram below. The maximum distance
between sensor and transmitter is 200 ft. (60 m) for refrigerant and 500 ft. (160 m) for
toxic and combustible gases. Use twisted and shielded cable #24/2 AWG (Belden
#9841) for the Sensor’s Communication (green and white). Use standard wires #18
AWG for Toxic and combustible Sensor’s Power Supply (black and red) and wires #14
AWG for refrigerant Sensor’s power supply (black and red). Color code (black, red,
green, white) has to be respected.
Each sensor needs to be supplied
with separate wires and needs to be
connected directly on the VA301EM.
However same communication terminals can be shared.
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3.1.3 Communication (if connected on a controller network), J10:
The communication cables have to be grounded using the shield terminal. Use twisted
and shielded cable #24/2 AWG (Belden 9841) for the connection. The network can
be up to 2000 ft. (600 m) per channel. The lenght of a T-tap can be a maximum of 65
feet (20 m). A maximum of 130 ft. (40 m) for all the T-tap must be respected.
To next unit
if applicable
From previous
unit if applicable
STROBE
Relay 4
FAN
FailSafe Relay
FailSafe relays are activated with the
unit. That way, electrical failures can
be detected putting the system on
alarm. The default setting for
VA301EM is normal mode (No
FailSafe). The VA301EMRP setting is a
copy of the VA301EM programmation, including accessories activation.
Relay 2
BOILER/CHILLER
HORN
The relays 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
drawing below for proper wiring.
Relay 3
Relay 1
3.1.4 Relay Outputs:
See APPENDIX section for more details about B-52 and ASHRAE standard configuration.
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3.1.5 Output 24 Vdc, J8
The three 24 Vdc / 250 mA outputs are provided to activate DC horn, strobe, etc.
Factory setting
RFS: Optional built-in stobe
RFSA: Optional built-in stobe and horn
3.2 4@20 mA CONFIGURATION
3.2.1 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 VA301EM for each
of its sensors. It can be connected to a
third party controller, DDC, BMS, etc.
Polarity must be observed. Do not apply
electrical power to the VA301EM until all
connections are made.
J9
3.2.2 Contact Input, J16
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 galss
switch in series if needed.
Contact 1 = Electrical shut down (ASHRAE 15
config.)
Contact 2 = Fan activation (ASHRAE 15 config.)
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Contact 1
Contact 2
VA301EM - VA301EMRP USER’S MANUAL
3.2.3 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 (VA301EM, VA301IRF and
VA301D2).
4@20 PCB
1
VA301EM PCB
C1
C9
C8
Made in
Canada
Q3
6
JP4
1
R17
R18
R2
JP2
JP1
JP3
1
3
U9
1
R3
C3
C13
C6 R14
R1
JP5
U8
R13
C12
WARNING
A dedicated power supply must be used
with each VA301EM. Considerable damage
may occur if this condition is not strictly followed.
Current Sourcing Output Configuration
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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.
4@20 PCB
1
VA301EM PCB
C1
C9
C8
Made in
Canada
Q3
6
JP4
1
R17
R18
R2
JP1
JP3
1
1
3
U9
JP2
R3
C3
C13
U8
JP5
C6 R14
R1
R13
C12
ENGLISH
4@20 mA OUTPUT LOOP-POWERED OPERATION
(Factory Setting)
Table 3
Permitted Impedance in the 4@20 mA Loop
Voltage Source Applied
Total Impedance
12 Vdc
400 Ohms
16Vdc
600 Ohms
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20 Vdc
800 Ohms
24 Vdc
1,000 Ohms
30 Vdc
1,300 Ohms
12
VA301EM - VA301EMRP USER’S MANUAL
3 wires configuration
4 wires configuration
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4. CALIBRATION / PROGRAMMING
4.1 USER INTERFACE
VA301EM
T205
When power is initially applied, the
unit will display the product’s
name and firmware’s revision.
4.2 OPERATING MODE
Normal Mode:
In normal mode, no input from the end-user is required. The
display will scroll between the sensors (up to 4) and will show
the gas name & gas concentration. The Tx LED will blink
when data is send on the communication channel (if connected to a controller).
Alarm Mode:
The corresponding red alarm LED (A, B or C) will lit in case
of a gas leak for a given sensor. The Silence key can be used
to turn off the relays/buzzer if programmed accordingly. The
Reset key is used to acknowledge an alarm when the VA301EM
is programmed to comply with the B-52/ASHRAE 15 mechanical code.
Fault Mode:
If a communication problem occurs with one of the sensors,
the yellow fault LED will be on. The servicing alarm will also
turn on the fault LED.
Programming Mode: The programming mode is password protected and should
only be accessed by a certified technician. Pressing the Enter
Key will put the VA301EM in programming mode. The Scroll
keys are used to move around the menus and input programming values. ESC key will cancel an input or exit the programming menu.
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4.3 KEY DEFINITION
ESC Key:
Use the ESC Key to exit the menus or cancel an input.
Use it also to stop the alternating reading between the
connected sensors.
Scroll Keys (Up/Down): Use the Scroll Keys to scroll the menus or to select a
specific value.
Enter Key:
Use the Enter Key to enter a programming field or to
validate a specific value.
Fan Start Key:
Control relay #1 (Fan)
(For B-52 or ASHRAE 15 programmation).
See Events Tables.
Fan Stop/Reset Key:
The Reset Key enable the user to reset the alarm or the
relay # 1. (For B-52 or ASHRAE 15 programmation).
See Event Tables.
Silence Key:
Turns off the buzzer and horns
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4.4 SPECIFICATIONS
4.4.1 TRANSMITTER VA301EM
Standard Outputs:
Optional Outputs:
Audible Alarm:
Display :
Visual Indicators:
Maximum distance between
VA301EM and Controller:
Relay Output Rating:
Circuit Protection:
Overvoltage Category:
Power Requirement:
4 DPDT relays
3 Outputs at 24 Vdc @ 250 mA each
4@20 mA for each sensor
RS-485: Modbus or Vulbus
65 dBA @ 3 foot (1 m)
Backlit LCD
Green LED:
Normal operation
Red LEDs:
Alarm A, B and C
Yellow LED:
Fault/service alarm
Amber LED:
Tx
(Activated in network mode)
Up to 2000 feet (600 m)
T-tap: 65 ft. (20 m) maximum per t-tap
130 ft. (40 m) total
Transmitter Weight:
5A, 30Vdc or 250Vac (resistive load)
Long Time-Lag Polyswitch Type TT
II
22-27 Vac, 50 or 60 Hz,
29-38Vdc, 2.0 A max @ 29 Vdc
Indoor Use
32°F to 100°F (0 to 40°C)
0 to 95% RH (non-condensing)
Up to 9843 feet (3,000 m)
ABS - Polycarbonate
2
7.99” (H) x 11.02”(W ) x 2.76” (D)
(20.3 x 28 x 7 cm)
2.26 lbs (1.02 kg)
Optional Horn:
105dBA, 4-28V, 2800Hz (RFSA)
Operating Environnement:
Operating Temperature Range:
Operating Humidity Range:
Operating Altitude:
Enclosure:
Pollution Degree:
Transmitter Size:
Min. Voltage 80 dB(A) min. @ 2 FT and 6 Vdc
Max Voltage 90 dB(A) min. @ 2 FT and 28 Vdc
Optional Strobe:
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STAS flashing LED, 24VAC/VDC
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VA301EM - VA301EMRP USER’S MANUAL
4.4.2 SENSOR VA301IRFS
Gases Detected:
Sensing Technology:
Measurement Range:
Resolution:
Response Time (T90):
Cold to Start:
Operating Environnement:
Distance between VA301EM
and Sensor:
Operating Temperature Range:
Operating Humidity Range:
Operating Altitude:
Enclosure:
Size:
Weight:
R-11, R-12, R-22, R-123, R-125 and R-134a
(other mixes also available)
Vulcain infrared sensor
0-1000 PPM
1 PPM
60 seconds
4 hours
Indoor Use
Up to 200 feet (60 m)
32°F to 100°F (0 to 40°C)
0 to 95% RH (non-condensing)
Up to 9843 feet (3,000 m)
ABS - Polycarbonate
4.02” (H) x 11.02”( W) x 2.48” (D)
(10.2 x 28 x 6.3 cm)
2.33 lbs (0.603 kg)
The VA301EM sensor LED has 2 functionalities. If the sensor is working properly, the LED will blink according to the sensor addresses on the VA301EM. In
that case, the LED will blink as shown below:
Address 1 = The LED blink 2 times during 2,8 seconds
Address 2 = The LED blink 3 times during 2,8 seconds
Address 3 = The LED blink 4 times during 2,8 seconds
Address 4 = The LED blink 5 times during 2,8 seconds
If the sensor is connected to a VA301IRF, the LED will be on during 0,2 seconds and off during 2,6 seconds (blinking).
If the sensor has a problem (failsense), the LED will go on steady
4.4.3 SENSOR VA301D2
Sensing technology:
Distance between VA301EM
and Sensor:
Operating Temperature Range:
Operating Humidity Range:
Operating Altitude:
Enclosure:
VA301EM - VA301EMRP USER’S MANUAL
Electrochemical (toxic)
Catalytic combustion (combustible)
Diffusion fuel cell (oxygen)
Up to 500 feet (160 m) (toxic and combustible)
Toxic:
-40°F to 100°F (-40 to 40°C)
Combustible: -40°F to 112°F (-40 to 50°C)
0% to 95% RH, Non-Condensed
Up to 9843 feet (3,000 m)
Class 1, Division 1, Groups B, C, D
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4.5 RANGE AND ALARM LEVELS
Table 4
Range and Alarm Level
Gas Detected
Alarm A
Alarm B
AlarmC
0 - 250 PPM
25 PPM
200 PPM
220 PPM
0 - 10 PPM
0.72 PPM
2 PPM
9 PPM
0 - 100% LEL
25% LEL
50% LEL
90% LEL
Chlorine
0 - 15 PPM
0.5 PPM
1 PPM
13.5 PPM
Sulfur Dioxide
0 - 10 PPM
2 PPM
5 PPM
9 PPM
H2S
Hydrogen Sulfide
0 - 50 PPM
10 PPM
15 PPM
45 PPM
HCL
Hydrogen Chloride 0 - 25 PPM
3 PPM
4 PPM
22.5 PPM
HCN
Hydrogen Cyanide
5 PPM
9 PPM
45 PPM
ETO
Ethylene Oxide
0 - 20 PPM
1 PPM
5 PPM
18 PPM
O2
Oxygen
0 - 25% Vol.
19.5% Vol.
22% Vol.
22.5% Vol.
0 - 1,000 PPM
50 PPM
500 PPM
900 PPM
0 - 1,000 PPM
250 PPM
500 PPM
900 PPM
0 - 100% LEL
25% LEL
50% LEL
90% LEL
CO
Carbon Monoxide
NO2
Nitrogen Dioxide
H2
Hydrogen
CL2
SO2
R-123 Refrigerant
R-11
Range
0 - 50 PPM
R-12
R-22
Refrigerant Q1
R-125
R134A
COMB Combustibles
A different alarm level may have been programmed in order to satisfy the
constraint of a particular application.
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VA301EM - VA301EMRP USER’S MANUAL
5. MAINTENANCE
The VA301EM is a maintenance free controller. Only the sensors need periodic
inspection and calibration.
5.1 PERIODIC INSPECTIONS AND CALIBRATION
Vulcain provides its customers with specialized gas detection equipment. Beyond
the warranty period, the systems must be maintained and calibrated on a regular
basis (normally two times a year).
Only Vulcain's certified personnel are authorized to accomplish this work. Vulcain
will not assume responsibility for the interruption of service or malfunctioning of its
equipment as a result of the discontinuance of maintenance and calibration
services.
An up-to-date list of authorized technical centers is available from Vulcain’s Technical
Support.
If unit span or zero cannot be adjusted, the sensor may be approaching its
end-of-life and must be replaced. Keep an operation log of all maintenance,
calibrations and alarm events.
5.2 REPLACEMENT PARTS
5.2.1 LED replacement instructions for RFS or RFSA option:
- Turn the diamond on the cap until it is align on the black diamonds;
- Pull off the cap;
- Use the insertion tool to remove the LED;
- Use the insertion tool to put in the new LED;
- Put on the cap;
- Turn the diamond until it is align on the white diamonds.
Due to continuous evolution of our products, please contact our service
department for ordering parts or for more details.
5.3 CLEANING
Clean the exterior with a soft, damp cloth. Do not use solvents, soaps or polishers.
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6. APPENDIX
AVAILABLE PRE-PROGRAMMED CONFIGURATIONS
Table 5
Type1 CND (B-52 Canadian Standard for R123)
SetEvent
Input
Status
Output
Reset
Silence
Event# 1
SD All
Alr A
Relay #1
Yes
No
Event# 2
SD All
Alr A
Relay #4
Yes
No
Event# 3
SD All
Alr A
Out 1
Yes
Yes
Event# 4
SD All
Alr A
Out 2
Yes
No
Event# 5
SD All
Alr A
Out 3
Yes
No
Event# 6
SD All
Alr A
Buzzer
Yes
Yes
Event# 7
SD All
Alr A
Relay #2
Yes
Yes
Event# 8
SD All
Alr A
Relay #3
Yes
No
Event# 9
SD All
Fault
Relay #3
Yes
No
Event#10
SD All
Alr B
Relay #1
No
No
Event#11
SD All
Alr C
Relay #1
No
No
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VA301EM - VA301EMRP USER’S MANUAL
Table 6
Type2 CND (B-52 Canadian Standard for other Refrigerants)
Event
Input
Status
Output
Reset
Event# 1
SD All
Alr A
Relay #1
Yes
No
Event# 2
SD All
Alr A
Out 1
Yes
Yes
Event# 3
SD All
Alr A
Out 2
Yes
No
Event# 4
SD All
Alr A
Out 3
Yes
No
Event# 5
SD All
Alr A
Buzzer
Yes
Yes
Event# 6
SD All
Alr A
Relay #2
Yes
Yes
Event# 7
SD All
Alr B
Relay #4
Yes
No
Event# 8
SD All
Alr A
Relay #3
Yes
No
Event# 9
SD All
Fault
Relay #3
Yes
No
Event#10
SD All
Alr C
Relay #1
No
No
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21
Silence
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Table 7
Type3 US (ASHRAE 15 Standard for Refrigerants)
Event
Input
Status
Output
Reset
Silence
Event# 1
SD All
Alr A
Relay #1
Yes
No
Event# 2
SD All
Alr A
Out 1
Yes
Yes
Event# 3
SD All
Alr A
Out 2
Yes
No
Event# 4
SD All
Alr A
Out 3
Yes
No
Event# 5
SD All
Alr A
Buzzer
Yes
Yes
Event# 6
SD All
Alr A
Relay #2
Yes
Yes
Event# 7
SD All
Alr B
Relay #4
No
No
Event# 8
SD All
Alr A
Relay #3
Yes
No
Event# 9
SD All
Fault
Relay #3
No
No
Event#10
1ManSw
#1
Open
Relay #1
Yes
No
Event#11
1ManSw
#1
Open
Relay #4
Yes
No
Event#12
1ManSw
#1
Open
Out 1
Yes
Yes
Event#13
1ManSw
#1
Open
Out 2
Yes
No
Event#14
1ManSw
#1
Open
Out 3
Yes
No
Event#15
1ManSw
#1
Open
Buzzer
Yes
Yes
Event#16
1ManSw
#1
Open
Relay #2
Yes
Yes
Event#17
1ManSw
#1
Open
Relay #3
Yes
No
Alr C
Relay #1
No
No
#2
Open
Relay #1
No
No
Event#18
SD All
Event#19
2ManSw
1
Mansw #1 Trigger off an electrical shut down.
#2 Trigger off relay #1.
2 ManSw
DR0071.08 505869 May 2005
22
VA301EM - VA301EMRP USER’S MANUAL