Multi-Point
Gas Alarm Systemwith Built-in Backup Batteries
UVB-810Instruction Manual

ＵＶＢ-８１０
Gas Detection Alarm System Keep this manual for easy reference.
 Carefully read this manual prior to use.
 This manual covers the standard model. If your unit has end-user-specificoptions, this manual will be superseded by your delivery specifications.

Instruction Manual No.
GAE-137-01
December 2021

Table of Contents
1. Introduction ................................................................................................................................. 1
2. Safety Precautions ...................................................................................................................... 2
3. Package Contents ....................................................................................................................... 3
4. System Configuration .................................................................................................................. 4
5. Unit Dimensions and Components .............................................................................................. 5
5.1. Gas Alarm System ............................................................................................................. 55.2. Indicator Unit (V3 series) .................................................................................................... 7
5.3. Alarm Unit (VAS) ................................................................................................................ 8
5.4. Backup Power Unit (VBH3) ................................................................................................ 9
6. Installation and Wiring ............................................................................................................... 10
6.1. Installation ........................................................................................................................ 10
6.2. Wiring .............................................................................................................................. 12
7. Operation .................................................................................................................................. 19
7.1. Operation procedure ........................................................................................................ 19
7.2. Operation during power outage ........................................................................................ 20
8. Maintenance ............................................................................................................................. 21
8.1. Routine check and annual/semi-annual inspection ........................................................... 21
8.2. Backup Battery Replacement ........................................................................................... 22
9. Troubleshooting ........................................................................................................................ 24
10. Specifications .......................................................................................................................... 25
11. Warranty.................................................................................................................................. 26
12. Service Life Expectancy .......................................................................................................... 26
13. Battery Life.............................................................................................................................. 26
Battery disposal ...................................................................................................................... 26
14. Glossary.................................................................................................................................. 27

1. Introduction
Thank you for purchasing the New Cosmos UVB-810 multi-point gas alarm system.
Prior to use, please read this instruction manual to ensure correct and safe operation and to prevent
accidents.
This system is a combination of several indicator units and one alarm unit. Each indicator unit is usedin connection with a gas detector which is installed on-site, where gas detection is necessary.
The system indicates the gas concentrations of combustible gases such as hydrogen, butane, LPG,
gasoline, toxic gases and/or oxygen. It issues audio and visual alarms in the form of flashing lights
and loud beeping sounds if gas concentrations reach preset levels. The system covers three or six
gas detection points.
This system has two built-in backup batteries. In the event of a power outage, these batteries will
provide emergency power to the system for uninterrupted gas-monitoring during the power outage.
While external power is provided, the batteries are being charged.

Symbols Used in this Instruction ManualThis manual uses Danger, Warning, Caution and Note symbols to draw attention to procedures,materials, methods, and processes, which require particular attention.

DANGERWARNINGCAUTION
NOTE

Indicates an imminently hazardous situation that can result in death orserious injury.
Indicates a potentially hazardous situation that may result in death orserious injury.
Indicates a hazardous situation that may result in minor injury or property
damage.
Provides advice/information on product handling.

12. Safety Precautions
Carefully read this manual prior to use.
To ensure safe operation, follow the precautions given below.
Wiring and installation should only be performed by a qualified electrician with appropriate
knowledge of wiring/installation procedures.
WARNING Ground the product to prevent electric shocks.
 If there is a gas alarm, take the necessary measures specified by your company.
 This product is not explosion-proof and should not be installed in a hazardous area.

CAUTION Do not disassemble, modify, or alter the structure of the product or its electrical circuits.
Doing so may compromise the performance of the product.
 This product is not drip-proof and should be kept away from water.
 Only use this product in accordance with the applicable laws and regulations.

23. Package Contents
The following items are included in a standard package. If any items are missing or damaged, pleasecontact New Cosmos or its authorized representative for replacement.
Standard contents
Item

Quantity

UVB-810 gas alarm system Includes indicator units, an alarm unit, and a backup
power unit
 Any unused indicator unit opening(s) will have filler
panel(s) to seal/close them.

1

Wall-mounting brackets

1 set

Fuse (for UVB-810)

Dia. 5.2 - 7A

250 VAC

2

Fuse (for alarm unit)

Dia. 5.2 - 0.5A 125 VAC

1Fuse (for indicator unit)

Dia. 5.2 - 1A

125 VAC

1 per indicator unit

Fuse (for backup power unit)

Dia. 5.2 - 1A

125 VAC1

M5x8 mounting screw, for mounting UVB-810

4

Instruction manual

1

Inspection certificate

1

Optional items (sold separately)
Number of
detection points

Zener barrier
Panel-mounting brackets with tension screws

3

1 set

4. System Configuration

UVB-810 gas alarm system

Ｖ－８１０型

Backupbatteries

Indicator units指示警報部
and alarm unit

External電power源supply
機器仕様による(As per delivery
specifications)(Analog Output)(Collective
alarm contacts)（一括警報接点）
Recorder
記録計

External

制御機器
control unit
(Dedicated alarm

External
制御機器
control unit

（個別警報接点）
contacts)

P
External reset device

拡散式
Diffusion
type
gas
detector
ガス検知部

Extractive typegas detector

吸引式ガス検知部
Gas ININ
GAS

Figure 1. Typical System Configuration* Refer to Section 6. “Installation and Wiring” for more information.
* External control units may include: signal towers, signal lights, alarm horns, shutdown valve etc.

Collective and Dedicated Alarm Contacts
The UVB-810 gas alarm system consists of one alarm unit and multiple indicator units. Each indicator unit isconnected to an onsite installed gas detector. The system has one collective terminal block and multiple
dedicated terminal blocks. One dedicated terminal block is provided for each indicator unit. Collective
and dedicated terminal blocks have several alarm contacts. These alarm contacts can be used to control
external devices to suit the end-user’s devices. E.g., interlock, horn, signal light.
(1) Collective alarm contact
These relay contacts are located on the collective terminal block and activate if at least one indicator unit
generates a fault alarm or gas alarm.
(2) Dedicated alarm contact
These relay contacts are located on each dedicated terminal block and activate if the corresponding indicator
unit generates a gas alarm.

45. Unit Dimensions and Components
5.1. Gas Alarm System
3

14

1

93

A

10

342

21

5

Front view

Side view

Bottom view

6

2 13

7

4

8

9

12

10

11

Front view without case cover
Figure 2. Gas Alarm System
Table. 1
Case type

Width A (mm)3-point414

6-point642

5(Dimensions are in mm)

Item

Component

Function/Description

1

Alarm unit

Activates an alarm in the form of lights and sounds

2

Indicator unit(s)Indicate(s) gas concentrations

3

Backup power unit

Shows the backup battery status and battery voltage

4

Backup battery (x 2 pcs)

Provide(s) emergency power in the event of a power outage

5

Case cover

6

7

Cable opening(2 places for 3-point type,4 places for 6-point type)
Power converter

Protective cover for the energized area to prevent accidental contact
Can be opened by releasing its two draw latches
Can accommodate a cable of maximum diameter 20mm
Located on the bottom and the lower rear

8

Power switch

Converts from 100–240 VAC to 24 VDC
Included when 24 VDC power is unavailable
Toggle switch to turn the gas alarm system on or off

9

Fuse holder (2 places)

Houses a fuse for the gas alarm system

10Collective terminal block11

Dedicated terminal block(s)12Power terminal block13

Knockout plate

Houses the collective alarm contacts. Connect external leads to thecontacts as needed. When one or more indicator units signal a fault
alarm/gas alarm, the relevant collective alarm contact will be activatedHouses the dedicated alarm contacts, analog output and gas detector
terminals. Connect external leads to the contacts/terminals as needed.
One dedicated terminal block is provided per indicator unit. When acorresponding indicator unit signals a gas alarm, the relevant alarm
contact will be activatedHouses terminals for connecting external 100–240 VAC power cableMarked as “AC100～240V INPUT”
Make a cutout in the knockout plate as needed to accommodate cables

14

Metal plate

Provides the backup battery check procedure
Needs to be temporarily removed during wall-mounting work6

5.2. Indicator Unit (V3 series)

2
3
1

4
5
6
7

8

11

9
10

12

Figure 3. Indicator Unit
Item

Component

Function/Description1

Gas concentration bar
graph display

Displays the gas concentration and alarm set values

2

POWER LED (green)

Lights up when the indicator unit is on

3

TROUBLE LED (amber)Flashes when a device failure is detected in a connected gas detector
or in the indicator unit itself

4

ALARM2 LED (red)Flashes when the gas concentration exceeds the 2
value

5

ALARM1 LED (red)Flashes when the gas concentration exceeds the 1 stage alarm set
value

6

MNT LED (red)Lights up or flashes while in the maintenance mode

7

TEST LED (red)Lights up while in the test mode

8

ADJ button

Used to perform a one-touch zero adjustment (21vol% adjustment foroxygen)9

TEST button (recessed)

Used to test the alarm function
Use a rounded pin to press this button

10

MNT button

Switches between MNT1, MNT2 and normal operation modes

11

HIGH button

Used to adjust the testing level during the test mode

12

LOW buttonndstage alarm set

st7

5.3. Alarm Unit (VAS)
Exposed button typeSemi-lock type

Full-lock typeCovered button type
1
5

2

4
7
3
6
8

With front cover closed

Semi-lock typewith front cover opened

Full-lock typewith front cover opened

Figure 4. Alarm Unit
Item

Component

Function/Description

1

POWER LED (green)

Lights up when the alarm unit is on

2

TROUBLE LED (amber)Lights up when a device failure in one or more indicator units or in the alarm unit
itself, is detected

3

Audio opening

Produces beeping sounds when a gas alarm is activated
Produces a steady tone when a device failure is detected

4

ALARM2 LED (red)Lights up when one or more indicator units generates a 2nd stage gas alarm

5

ALARM1 LED (red)Lights up when one or more indicator units generates a 1st stage gas alarm

6

Front cover (Covered
button type only)

Open to access the RESET and BZ.STOP buttons

7

RESET button

For the semi-lock type, press to mute an active alarm. The alarm will be
automatically cancelled when the gas concentration falls below the alarm set value.
For the full-lock type, press the button once the gas concentration falls below thealarm set value to cancel the alarm

8

BZ.STOP button(Full-lock type only)

Press to mute an audio alarm85.4. Backup Power Unit (VBH3)

1
2
3
4
5

Figure 5. Backup Power Unit
Item

Component

Function/Description

1

POWER LED (green)

Lights up when the backup power unit is on, indicating that thebatteries are being charged

2

BACKUP LED (red)Flashes when the backup battery is being consumed

3

Batt. Check LED (2 places)

Indicates the backup battery status and battery life:
Upper LED (green): Lights up when the batteries are normal.
Lower LED (red): Lights up when the batteries are empty (charge isneeded) or the battery life expires.

4

Battery voltage indication

Indicates battery voltage while the Batt. Check button is beingpressed5

Batt. Check button

Press to check if the backup batteries function normally (page 20)

96. Installation and Wiring
6.1. Installation
WARNING This product is not explosion-proof and should not be installed in a hazardous area.

CAUTION Install this product in a highly visible position in the event of an alarm, where it can beconstantly monitored.
 Do not install in places subject to vibration, electrical noise, corrosive gas, hightemperature and/or high humidity.
 Avoid installing in places near equipment which can generate high frequencies.

There are two installation methods: wall-mounting and panel-mounting.

6.1.1. Wall-mounting
This product can be installed either directly onto a wall or by using the wall-mounting brackets.
 Wall installation with brackets(1) Attach the two brackets to the rear of the gas alarm system case by tightening the four M5x8 screws.
(2) Your case type will determine the needed “A” width (Table 2). Make four holes in the wall toaccommodate the M5 screws.
(3) Mount the case to the wall using four M5 screws.
Wall mounting bracket x 2 (provided)

A
Table 2
350

Case type

Width A (mm)3-point

330

6-point558

4-M5
screw x 4 (provided)

Figure 6. Attach Brackets

Figure 7. Mounting Layout

 Direct wall Installation(1) Refer to Figure 8 and Table 3, and cut four mounting holes in the wall. This gas alarm system has
cable openings on its rear and its bottom. When using the bottom cable opening(s), it is notnecessary to cut a hole in the wall for cable entry. On the other hand, a wall cut must be made whenusing the rear cable opening(s).
(2) Install a wall anchor into each of the four wall-mounting holes, and screw two bolts into the two top
wall anchors.
(3) Remove the metal plate by removing the four screws. Pull out to remove the indicator unit which
covers the case’s upper mounting holes. Hang the case on the two top bolts (Step 2) by sliding thesebolts through the case’s upper mounting holes. Screw two bottom bolts into the two lower anchors.
10(4) Firmly tighten all four bolts, and install the removed alarm and indicator units into the case. Install theremoved connectors, too.
Table 3
Length in mm

Case type

CAUTION

A

B

C

D

E

3-point

292

280

292

235

100

6-point

482

280

482

387

100

Always remove connectors using plug orconnector ends, and not the cable. Broken
wires or poor contacts may result.

Remove metal plate
M5 Anchor

4-M5 Anchor

Cable entry opening

Wall
M5 bolt

Figure 8. Mounting Layout

Figure 9. Attach Anchor

Figure 10. Installation

6.1.2. Panel-mounting
This gas alarm system can also be installed on a panel (1.6–5 mm thick).
(1) Refer to Figure 11 and Table 4 and cut a square cutout in the panel.
(2) Insert the gas alarm system case through the square cutout. Attach the two top and two bottom
optional panel-mounting brackets with tension screws. Evenly tighten the tension screws in an “X”
pattern to secure the case to the panel.
Panel-mounting bracket withPaneltension screw x 4+1-0
Table 4
Length in mm
Case typeAB
3-point408

332

6-point

636

332

±1

Figure 11. Panel Cutout Size
11

Figure 12. Installation

6.2. Wiring
WARNING Prior to wiring, turn off the product to prevent electric shocks.
 Ground the product to prevent electric shocks.

6.2.1. Wiring and Connection of Gas Detector
CAUTION
 Ensure that the cables are correctly connected between each indicator unit/gas detectorpair.
 Keep connection cables away from the power cable.
 When installing a gas detector in a hazardous location, use explosion-proof wiring. Referto the explosion-proof wiring instructions in the gas detector’s instruction manual.

Wire each gas detector to its corresponding dedicated terminal block. Make sure that the tag number
and plate number of the indicator unit match the loop number and sticker number of the gas detector.
*Refer to the gas detector’s instruction manual for its specific installation and wiring procedure.

NOTE

Ensure that the resistance of the connecting wire (per conductor) is 10 Ω or less.
E.g.
≤ 400m  0.75 mm2 wire
≤ 600m  1.25 mm2 wire
≤ 1km  2.00 mm2 wire
*Only an estimate and no guarantee.
* When using a zener barrier to connect to an intrinsically safe gas detector, choose the wire andits length according to the intrinsically safe parameters as specified by the zener barrier.

There are multiple types of V3 series indicator units. They are divided according to the gas detector
types they are used with. These types are divided into the following four groups, with wiring varying fromgroup to group.
Table 5. V3 Groups

Group 1

Group 2V3 Type Hv
V3 Type Cv
V3 Type Tv

V3 Type O
V3 Type DGroup 3

Group 4V3 Type M

V3 Type Hi
V3 Type Ci
V3 Type Ti

For type selection, please contact New Cosmos or its authorized representative.

12

Make a cutout in the knockout plate (bottom) as needed to accommodate cables.
When using a zener barrier to connect to an intrinsically safe gas detector, Ingress Protection rating“IP2X” is required. Refer to Figure 14 for typical configuration using a zener barrier.
*To comply with IP2X, it is necessary to take measures to prevent fingers from being able to enter
through the cable opening(s) and touching the electrically charged parts inside. If there is a gap
between the cables and the cable opening, close the gap by using putty, etc.

Cable opening

Knockout plate(1) Typical Gas Detector Connections for Group 1 (V3 Type: Hv/Cv/Tv)

Dedicated terminal block

Dedicated terminal block

A/F
B
C
D

A/F

A/F

B
C
D

B
C
D

個別接続端子台＋－Do not ground
UVB-810 when
the gas detector
is grounded.

＋

24 VDC
DC24V
OUT
OUT

－

３芯
3-core
シールドケーブル
shieldedcable

Dedicated terminal block

＋

DC24V
24 VDCOUT
OUT－

24 VDC
DC24V
OUT
OUT

６芯
6-core
シールドケーブル
shieldedcable

5-core５芯shieldedcable
シールドケーブル

ガス検知部

B

C

D

PA PB

E

（+） (-)

Diffusion typegas detector
拡散式の場合BCD

PA PB FE（+） (-)

Extractive typegas detector
吸引式の場合Pump power: 24 VDC（ポンプ電源 DC24V）C

D
E

Extractive typegas detector with flow sensor
フローセンサ付き吸引式の場合
Pump power: 24 VDC（ポンプ電源 DC24V）

Figure 13. Typical Gas Detector Connections for Group 1

13

B

(2) Typical Gas Detector Connections for Group 2 (V3 Type: O/D)

Dedicated terminal block

個別接続端子台

Dedicated terminal block

Dedicated terminal block

A/F
B
C
D

A/F
B
C
D

A/F

＋ 24 VDC
DC24V OUT
－ OUT

＋ 24 VDC
DC24V OUT
－ OUT

＋ 24 VDC
DC24V OUT
－ OUT

Do not ground
UVB-810 when
the gas detector
is grounded.

B
C
D

11 12

E

Zener
Barrier
ﾂｪﾅｰﾊﾞﾘｱ

C

D

E

SingleClass-A
単独A種接地
earthed
５芯
5-coreshieldedcable
シールドケーブル

２芯
2-coreshieldedcable
シールドケーブル

２芯
2-coreshieldedcable
シールドケーブル

ガス検知部

C

D

E

PA PB FE（+） (-)

拡散式の場合Diffusion typegas detector

C

D

E

C

D

E

E

吸引式の場合Extractive
typegas detector（ポンプ電源DC24V）
Pump power: 24 VDC※Fはフローセンサ付きの場合*F: When a flow sensor is used

E

本質安全防爆工事の場合
Diffusion
type
intrinsicallysafe gas detector（拡散式の場合）⑪⑫Ｅ
ＣＤＥ

When a zener barrier is installed

Figure 14. Typical Gas Detector Connections for Group 2

14

(3) Typical Gas Detector Connections for Group 3 (V3 type: M)

Dedicated terminal block

Dedicated terminal block

A/F
B
C
D

個別接続端子台＋－Do not ground
UVB-810 when
the gas detector
is grounded.

A/F
B
C
D
＋

24 VDC
DC24V
OUT
OUT

－

3芯
3-core
シールドケーブル
shieldedcable

24 VDC
DC24V
OUT
OUT

4芯
4-core
シールドケーブル
shielded
cable

ガス検知部
P

N

G

H

E

（+） (-)

P

E

N

G

H

（+） (-)

Diffusion typegas detector
拡散式の場合F

N E
EExtractive typegas detector*F: Whena flow sensor is used
吸引式の場合※Fはフローセンサ付きの場合

P-N
検知部電源
DC24V
P-N:
24: VDCdetector
power source
G-H: 検知部アナログ出力(4-20mA）
G-H:
4–20mAdetector analog output

Figure 15. Typical Gas Detector Connections for Group 315

(4) Typical Gas Detector Connections for Group 4 (V3 Type: Hi/Ci/Ti)

Dedicated terminal block

Dedicated terminal block

A/F

A/F
B
C
D

個別接続端子台＋－Do not ground
UVB-810 when
the gas detector
is grounded.

Collective terminal block

A/F
B
C
D

B
C
D
＋

24 VDCOUT
DC24V
OUT

－

４芯
4-core
シールドケーブル
shielded cable

24 VDC
DC24V
OUT
OUT

AC100V OUT

６芯
6-core
シールドケーブル
shielded cable

６芯
シールドケーブル

ガス検知部

Ａ

B

C

D

PA PB ＡE（+） (-)

Diffusion type
拡散式の場合gas detector

B

C

D

PR PS ＡE

Extractive
type
吸引式の場合gas detector（ポンプ電源DC24V）
Pump power: 24 VDC

CDE

吸引式の場合（ポンプ電源AC100V）

Figure 16. Typical Gas Detector Connections for Group 4

16

B

6.2.2. Connecting Power Cable
Use a dedicated breaker for the power cable going to this gas alarm system.
Connect the power cable to the collective terminal block.

6.2.3. Alarm Contact Connection
CAUTION
 Connect external equipment with a max load of either 100 VAC, 1 A or 24 VDC, 1 A to thecollective terminal block. Connect external equipment with a max load of either 250 VAC, 2
A or 24 VDC 2A (resistive load) to the dedicated terminal block.
 New Cosmos is not responsible for any costs or damages resulting from controllingexternal equipment (e.g., interlock) by using this product’s output signals (e.g., analog
output, alarm contact output).
(1) Collective alarm contact connection
To use the collective alarm contacts, connect wires from external devices to the collective terminal
block. Each contact is electrically isolated. The Alarm Reset (AR) and the Alarm Silence (AS)terminals are not relay contacts. Adding a switch between N and AR/AS terminals enables alarm
resetting/silencing from an external device.
UVB-810本体
UＶ-810
Collective
terminal block
総合接続端子台ZA2

2nd２段目警報無電圧１ａ接点
stage alarm (N.O. dry contact)

ZC2

BZ
BC
TZ
TC

st

st１段目警報無電圧１ａ接点

1 stage alarm (N.O. dry contact)

become ZB1 ZB2respectively.

ブ ザー用無電圧１ａ接点
Audio
alarm (N.O. dry
contact)

故 障alarm
無 電(N.O.
圧１ ａ
接contact)
点
Fault
dry

N
AR

Alarm Reset
外部リセットAS

Alarm Silence
外部ブザー停止*N.O.: Normally open. N.C.: Normally closed.

Figure 17. Wiring Diagram of Collective Terminal Block17

ndcontacts for 1 and 2
alarms, ZA1and ZA2

ZA1
ZC1

Note: When using N.C.

(2) Dedicated alarm contact connection
To use the dedicated alarm contacts, connect wires from external devices to the dedicated terminal
block.

UVB-810 本体
UＶ-810個別接続端子台
Dedicated
terminal block（G) ＋
Analog Output
アナログ出力

（H) －
ZA2

nd
2２段目警報１ａ接点
alarm (N.O. dry contact)

ZC

Commonコモン

ZA1

st
1１段目警報１ａ接点
alarm (N.O. dry contact)

A/F
B
C
D
＋

24 VDCＯＵＴ
or 100 VAC output
ＤＣ24Ｖ

－

Figure 18. Wiring Diagram of Dedicated Terminal Block

6.2.4. Analog Output Terminal Connection
To continuously monitor and record gas concentrations sent from an onsite installed gas detector,
connect an external recorder to the Analog Out terminals on the dedicated terminal block. Refer toFigure 18 above.
The standard analog output is 4–20mA. Use a recorder with resistive load of 300 Ω or less when using
the standard analog output. 1–5 V analog output is also available if specified at time of order. Whenusing 1–5 V analog output, use a recorder with resistive load of 100k Ω or more.

18

7. Operation
7.1. Operation procedure
IMPORTANT
Initial start-up procedure can be extremely dangerous because it uses actual gas (e.g.,combustible gas, toxic gas). It is highly recommended that New Cosmos or an authorized
representative should be contacted to perform the initial start-up. The accuracy of the checks
and adjustments made during this start-up (e.g., zero/span adjustments, operation checks
using actual gas) are crucial to ensure the reliability of the gas alarm system. Initial start-up
operation should only be performed by authorized personnel.

CAUTION Before turning on the gas alarm system, check that all the components are connected
correctly by referring to 6.2. “Wiring.” Also check your delivery specifications, if your unit has
end-user-specific options.
 The gas alarm system will start to run on its built-in backup batteries if the power switch is
set to the on position, even while there is no power supply.
After making sure that the power source voltage and the wiring are correct, take the following steps tooperate the gas alarm system.
(1) Powering-on
Set the power switch to the on position. The green POWER LEDs on all the indicator units will start
flashing and the warm-up cycle will begin; the green POWER LEDs on the alarm unit and the backup
power unit will only light up and not flash during the warm-up cycle. At the time of powering on, thebattery recharge will start.
(2) Warm-up
Once the warm-up cycle is completed, the green flashing POWER LEDs will become steady, andnormal operation will begin. The time needed for the warm-up cycle varies depending on the type of
sensor. Refer to the gas detectors’ instruction manual for more information.
Refer to the instruction manuals of V3 indicator unit and VAS alarm unit for their operation
procedures.

19

(3) Battery check
It is possible to check if the backup batteries function normally by pressing the Batt. Check button for
5 seconds. When the batteries are good, the green Batt.Check LED will turn on.
The battery level may not be at required level before the initial power-up. About 24 hours is needed
to fully charge the batteries. If the battery check result is not good, perform the battery check again
24 hours later.

Green-lit

Red-lit

Batt. Check buttonGood

Not good(Battery empty/expires)

7.2. Operation during power outage(1) In the event of a power outage, the BACK UP LED on the backup power unit will start flashing, the
POWER LED will turn off, and then the unit will start providing emergency power to the system foruninterrupted gas monitoring. The backup duration lasts for 30 minutes.

Flashes(2) When the battery voltage decreases and reaches the discharge-cutoff voltage, the unit willautomatically stop battery discharge and then the entire system will stop operation.
(3) When the power is restored, the BACK UP LED will turn off and the POWER LED will turn on, andthen the battery recharge will start. About 24 hours is needed to fully charge the batteries.

208. Maintenance8.1. Routine check and annual/semi-annual inspection
Perform routine checks and periodic inspections as given in the table below.
Item

Frequency

Procedure・ POWER LEDs
Check that all the green POWER LEDs (onindicator/alarm/backup power units) are on
and steady and that the system operates.
・ Bar graph displays
Check that the indication/reading of the bar
graph displays are as expected for normal
startup.
Abnormal: E.g., repeated bar graphfluctuations, abnormally high/low
concentration than recently observed, orindicating a high ppm even in clean air.

Daily

Routine check(performed by user)

・ Check backup batteries (page 20)
Press and hold the Batt. Check button on
the backup power unit to confirm that the
backup batteries function normally.

Monthly

・ Check alarm using TEST button
Press the TEST button on each indicator
unit to confirm that the alarm is functional.
Annual/semi-annual inspection(performed by New Cosmos or
its authorized representative)

6 months/YearlyContact your New Cosmos or its authorized
representative.

Important Notice for Scheduled Inspection
In order to ensure the reliability of the gas alarm system, it is vital to perform periodic
maintenance and inspections. It is highly recommended that a maintenance contract with alocal New Cosmos representative be made for the performance of scheduled inspections.
Installation, inspection, maintenance, calibration, and proof testing shall only be performed bytrained personnel.

CAUTION Performing an alarm operation check using the test button activates the analog output, alarm
contact output, and output to the alarm unit. If the alarm contact output is used to interlock
external devices, etc., enter the maintenance mode and release the interlocks of the external
devices beforehand, as needed, to prevent possible activation of the interlocks during theoperation check.
Notify those concerned before starting an alarm operation check.
 Perform maintenance inspections in accordance with the applicable laws and regulations of
the country where the product is used. For example, if used in Japan, circuitry tests (using the
TEST button) related to alarm functions must be performed at least once a month, anddetection and alarm tests must be performed at least once a year as specified by the Japaneseliquefied petroleum gas safety act and high pressure gas safety act.

21

8.2. Backup Battery Replacement
This product uses two backup batteries.
DANGER
Do not install the product or the batteries in a confined space or near a fire. Doing so may
result in hydrogen gas being generated from the batteries, which could cause a fire or an
explosion.

CAUTION Do not expose/soak the product or batteries to/in water. Doing so may cause anelectrical leak, which could result in an electric shock or fire.
 Ensure correct polarity when installing batteries. Incorrect polarities may cause a current
surge, which could result in a fire or device failure.
 Do not disassemble, modify, or deform the batteries. Doing so may cause a battery leak,fire, or explosion.
 The battery electrolyte contains sulfuric acid. Contact with skin or eyes can result inburns or blindness. If the battery leaks and its electrolyte comes into contact with skin or
clothes, immediately wash the contact area with clean water. If the electrolyte gets into
the eyes, flush immediately with clean water. Consult a doctor immediately.
 The battery life is two years. After two years, replace the batteries even if they pass thebattery check. Using expired batteries may cause an internal short-circuit or battery casedamage, which could result in a secondary disaster such as a battery leak, fire, or
explosion.
 Replace the two batteries at the same time.
 When disconnecting/connecting the battery connectors, be careful not to short-circuitthem.
 If the batteries are left non-energized for an extended period of time, the battery levelmay not be restored. Even if the product is not used for an extended period of time, thebatteries must be installed in it and kept energized to avoid an extended period of time ofnon-energization.

(1) Preparation for battery replacement
There are two types of batteries: 3-point type and 6-point type.
The connector shape and installation method differ with the battery type.

3-point type battery

6-point type battery

22

Connector

3-point type battery
Battery coverConnector

Backup battery(x 2 pcs)
Power switch(Toggle switch)

6-point type battery
Backup battery replacement(2) Powering-off
Release the two draw latches to open the case cover. Set the power switch to the off position to turnthe gas alarm system off.
(3) Battery removal
Remove the battery cover by removing the screws that attach it to the case. Disconnect theconnector from each battery. Pull out to remove the two batteries.
(4) Battery installation
Installation is the reverse of removal.
(a) Install two new batteries in place.
(b) Reconnect the connector (of the system) to the connector of each battery.
The connector of the system which has a blue wire should be connected to the connector of thebattery on the right, while the connector of the system which has a black wire should beconnected to the battery on the left.
(c) Ensure that the connecters are firmly engaged.
*3-point type battery: The battery cover has a cable holder on its right side. Secure the twoconnector cables to the cable holder.
*6-point type battery: The connector of the system should be connected with its groove facing
the battery surface.
GrooveGroove facing the battery

23

9. Troubleshooting
Before making a repair request, please refer to the table below. If the gas alarm system does not return
to normal operation after performing the corresponding steps in the table, or if your issue is not found in
the table, consult New Cosmos or its authorized representative.

Issue
POWER LEDs (onindicator units, alarm
unit, and backup
power unit) do notturn onIndicator unit’s
TROUBLE LED is
flashing, alarm unit’s
TROUBLE LED is on
and steady and alarm
unit is producing a
steady tone

Probable cause

Solution

Power switch is in the off
positionSet the power switch to on.
Check the wiring and tightenloose terminals.

Incorrect or loose wiring

Blown fuse

Replace blown fuse with a
new one.

Broken wires or incorrect
wiring between indicator unit
and gas detector

Check and rewire.

Broken sensor wire

Replace the sensor with a
new one.

Flow rate of extractive typegas detector is too low

Check inlet and piping fromgas detector for clogging.

Power supply voltage is 18 V
or less (for 24 VDC input)

Adjust power supply voltage
to 24 V  10%.

24

Reference
section

6.2. Wiring

Instruction
Manual of
V3 indicator
unit

10. Specifications
Model
Number of detection
points
Detection principle
Target gas
Indication range
Alarm set value
Alarm accuracy

Alarm delay

AlarmsExternal outputs

External inputs
Power source
Power consumption

UVB-810
3 or 6 points

As per delivery specifications
As per gas detector specifications
・Combustible gas :  25% of alarm set value under identical conditions
・Toxic gas:  30% of alarm set value under identical conditions
As per gas detector specifications
・Combustible gas: Less than 30 seconds with a gas concentration that is 1.6 times
higher than the alarm set concentration
・Toxic gas: Less than 60 seconds with a gas concentration that is 1.6 times higher than
the alarm set concentration
Note: Delay time caused by piping length is not included.
Indicator unit:
・Red ALARM1/2 LED: flashing when a 1st/2nd stage gas alarm occurs, and steadily lit
after reset (auto-resetting or manual-resetting type available).
・ Amber TROUBLE LED: flashing when a device failure in a connected gas detector orin the indicator unit itself, is detected.
Alarm unit:
・ Red ALARM1/2 LED: lit when one or more indicator units activates a 1st/2nd stage gas
alarm.
・Amber TROUBLE LED: lit when a device failure in one or more indicator units, or in thealarm unit itself, is detected.
・ Alarm sound: beeping when one or more indicator units activates a 1st/2nd stage gas
alarm, and generates a steady tone when a device failure in one or more indicator
units, or in the alarm unit itself, is detected.
Collective terminal block:・2nd alarm N.O. dry contact*
100 VAC, 1A. 24 VDC, 1 A (resistive load)
・1st alarm N.O. dry contact*
100 VAC, 1A. 24 VDC, 1 A (resistive load)
・Audio alarm N.O. dry contact
100 VAC, 1A. 24 VDC, 1 A (resistive load)
・Fault alarm N.O. dry contact
100 VAC, 1A. 24 VDC, 1 A (resistive load)*2nd/1st alarm contacts can be changed from N.O. to N.C. (specified at time of order)
Dedicated terminal block:・2nd alarm N.O. dry contact
250 VAC, 2A. 24 VDC, 2 A (resistive load)
・1st alarm N.O. dry contact
250 VAC, 2A. 24 VDC, 2 A (resistive load)
Analog output for gas concentration:
・4–20mA. Can be changed to 1–5 V (specified at time of order)
Alarm Reset (AR) and Alarm Silence (AS) terminals (They are not relay contacts)
100–240 VAC  10% 50/60HzPower consumption (VA) = (V3 x number of indicator units + VAS + 18) x 1.25 (forswitching loss)*Power consumption of gas detectors is included in consumption power of V3 indicator units

Backup batteris

Operating conditions

Mass
Installation method

12 V valve-regulated lead-acid battery x 2 pcs
Backup time: More than 30 minutes
Time needed to fully charge: More than 24 hours
Operating temperature: 0C to +40C
Operating humidity: 10% to 90%RH
No sudden temperature or humidity changes. No condensation.
3-point type: Approx. 8 kg
6-point type: Approx. 16 kg
Combined indicator units and alarm unit
Wall-mounting or panel-mounting (as per delivery specifications)

The above specifications are subject to change without notice for product improvement.
N.O.: Normally open
N.C.: Normally closed

25

11. Warranty
The warranty period is one (1) year from the date of purchase.
You are entitled to the limited warranty, if the product malfunctions due to a manufacturing defect during
normal use in accordance with the instruction manual, specifications and labels.
1. Warranty Scope
If the product fails or is found to be damaged due to a manufacturing defect during the warranty period,
and used in accordance with the instruction manual and specifications, we will provide a freereplacement and repair service. This warranty covers New Cosmos product/parts only and not third party
product/parts.
2. Warranty Exclusions
The following repairs will be at the cost of the customer even during the warranty period.
(1) Failures and damages incurred by incorrect use, deliberate acts or negligence of the user.
(2) Failures and damages caused by disaster, earthquake, storm and flood, lightning, extreme climate,abnormal power supply voltage, excessive electromagnetic interferences, or other acts of God.
(3) Failures and damages resulting from repair and/or modification by non-New Cosmos certified
technicians.
(4) Consumables and failures and damages resulting from improper consumable replacement.
(5) Other failures and damages not attributable to the manufacturer.

12. Service Life Expectancy
The design life expectancy of this product is ten (10) years, which is only an estimation, under normal
environmental conditions. The design life expectancy also assumes that calibrations are performed
properly and periodically, but does not imply that the product will operate correctly until the design life
expectancy expires. Thus, no warranty will be given after the one year warranty period is over. Pleasealso note that even if the product is calibrated, it may fail to operate correctly before the next calibration.

13. Battery LifeThe battery life is two years. After two years, replace the batteries even if they pass the battery check(battery voltage test).

Battery disposal
Used batteries must be disposed of in accordance with the applicable laws and regulations.

26

14. Glossary
TermDefinition

Indicator unit (V3)

Device which receives signals from a gas detector, indicates a gas concentration, andproduces a visual alarm if the target gas concentration reaches the preset alarm value,in the case of oxygen, a concentration above or below a preset limit.

Alarm unit (VAS)

Device which is used in connection with combinations of an indicator unit and a gas
detector to produce audio-visual alarms if a gas concentration higher than the preset
limit is detected or, in the case of oxygen, a concentration above or below a preset limit
is detected.

Gas detector

Device used to detect the presence of a target gas and to give its concentration in theform of an electrical signal.

Target gas

Specific gas to be detected, concentration displayed, and used to trigger alarms.

Detection range

A range of target gas concentrations that can be displayed and trigger alarms.

Alarm accuracy

Variance between the alarm set value and the detected gas concentration that
activates the alarms. It may also be expressed as a % with respect to the alarm set
value.

Alarm delay

The length of time a gas detector takes to activate an alarm after it is exposed to atarget gas concentration higher than the alarm set value or to some other specified
conditions.

Operating temperature andhumidity ranges

Ambient temperature and humidity ranges in which the gas detection and alarmsystem can operate normally.

Diffusion type

Sampling method using convective diffusion while placing a gas detector at a
detection point.

Explosion-proof enclosure

Method of protection in which an explosion in a hazardous area is prevented bycontaining any combustion within the device, and thereby, preventing it from spreading
into the atmosphere surrounding the enclosure.

Calibration gas (test gas)

Gas specifically prepared to calibrate the gas detection and alarm system/equipment.

Alarm set value

Selected gas concentration level where an alarm is activatedMaintenance and inspection

Activities performed to ensure that equipment operates normally and correctly.

Hazardous area (Explosive)

An area in which an explosive atmosphere is present, or may be expected to bepresent, in quantities such as to require special precautions for the construction,
installation and use of electrical apparatus.

Non-hazardous area
(Explosive area)

An area in which an explosive atmosphere is not expected to be present in quantities
such as to require special precautions for the construction, installation and use ofelectrical apparatus.

Auto-resetting

After an alarm has been triggered, and a target gas concentration falls below the gas
alarm set value minus 2% of the full-scale value (GASV-2% FSV), the ALARM LEDs
and relevant gas alarm contacts will automatically return to their normal positions.

Manual-resetting

Even if a target gas concentration falls below the gas alarm set value after an alarm
has been triggered, the ALARM LEDs and relevant gas alarm contacts will not
automatically return to their normal positions. Manual-resetting is only possible when
the gas concentration is below the gas alarm set value.

Full-lock type

Alarm unit type. After an alarm is activated and muted, the alarm status (ALARM LED
and output are active) will be maintained even if the gas concentration falls below thealarm set value. To clear the alarm, press the RESET button.

Semi-lock type

Alarm unit type. After an alarm is activated and muted, the alarm status will be
automatically cleared when the gas concentration falls below the alarm set value.

27

Revision History
Document No.

Date

Revision

GAE-137-00

Oct 2018

Initial issue

GAE-137-01

Sep 2020

01

Additional copies of this instruction manual may be purchased.
Contact New Cosmos or its authorized representative for ordering.

Authorized representative:

Manufacturer:
NEW COSMOS ELECTRIC CO., LTD.
2-5-4 Mitsuya-naka, Yodogawa-ku,
Osaka 532-0036, Japan
www.newcosmos-global.com