1. Introduction
Thank you for purchasing the New Cosmos UV-810, multi-point gas alarm system. Prior to use, please read this instruction manual to ensure safe and reliable operation and to prevent accidents. This alarm system is a combination of several indicator units and one alarm unit. Each indicator unit is used in connection with a gas detector which is installed on site where gas detection is necessary. The system indicates gas concentrations of combustion gases such as hydrogen, butane, LPG, gasoline, toxic gas and/or oxygen. It issues audio and visual alarms using flashing lights and loud beeping if gas concentrations reach preset levels. The system covers up to 15 gas detection points.
Symbols Used in this Instruction Manual
This manual uses Danger, Warning, Caution and Note symbols to draw attention to procedures, materials, methods, and processes, which require particular attention.

2. Safety Precautions
Carefully read this manual prior to use. To ensure safe operation, follow the precautions below. Wiring and installation should only be performed by a qualified electrician with knowledge of wiring/installation procedures.
/\ WARNING
● ● Be sure to ground this product to prevent electric shocks. If there is a gas leak alarm, take the necessary measures specified by your company. This product is not explosion-proof equipment and should not be installed in a hazardous area.
/!\ CAUTION
● Do not disassemble, modify, or alter the structure of this product or its electrical circuits. Doing so may compromise the performance of the product. ● This product is not a drip-proof unit, and should be kept away from splashing water ● Only use this product in accordance with applicable laws and regulations.
This product is packed and shipped with the utmost care. If any items are missing or damaged, please contact New Cosmos or its authorized representative for replacement.
* Refer to 6. "Mounting and Wiring" for more information. * External devices may include: signal towers, signal lights, alarm horns, etc.
Definition of Collective and Dedicated alarm contacts
The UV-810 gas alarm system consists of one alarm unit and multiple indicator units. Each indicator unit is connected to an onsite installed gas detector. The system has one Collective terminal block, and Dedicated terminal blocks. A 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. E.g. interlock, speaker, 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 device failure or gas alarm. 2) Dedicated alarm contact These relay contacts are located on the Dedicated terminal block, and activate if the corresponding indicator unit generates a gas alarm.
Exposed button type Covered button type
6-1. Installation WARNING ● This product is not explosion-proof equipment 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 be constantly monitored. Do not install in places subject to vibration, electrical noise, corrosive gas, high ● temperature 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 to a wall or by using wall mounting brackets. ●  Wall installation (Bracket) (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. Refer to Table 2. Make four holes in the wall to accommodate the M5 screws. (3)  Mount the case to the wall using four M5 screws.
●  Wall Installation (Direct) (1) Refer to Figure 7 and Table 3, and cut four mounting holes in the wall. This gas alarm system has cable openings on its rear and bottom. When using the bottom cable opening, it is not necessary to cut a hole in the wall for cable entry, but a wall cut must be made when using the rear cable opening. (2) Install wall anchors into each of the four wall mounting holes, and screw two bolts into the two top wall anchors. (3) Remove the alarm and indicator units covering the case’s upper mounting holes. Hang the case on the two top bolts (step 2) by sliding these bolts through the case’s upper mounting holes. Screw two bottom bolts into the two lower anchors. For 15- point type systems, remove the metal plate from the case as shown in Figure 9. (4) Firmly tighten all four bolts, and connect and install the removed alarm and indicator units into the case.

\ CAUTION
Always remove connectors using plug or connector ends, and not the cable. Broken wires or poor contacts may result.
6-1-2. Panel-mounting
This gas alarm system can also be installed on a panel (1.6 to 5 mm thick). (1) Refer to Figure 10 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 (three top and three bottom for 15-point type) optional panel mounting brackets with tension screws. Evenly tighten the tension screws in an “X” pattern to secure the case to the panel.

WARNING
Prior to wiring, turn off the gas alarm system to prevent electric shocks. Make sure to ground the unit to prevent electric shock. 6-2-1. Wiring and Connection of Gas Detector
/!\ CAUTION
● Ensure that the cables are correctly connected between each indicator unit/gas detector pair. ● . Keep connection cables away from the power cable. When installing a gas detector in a hazardous location, use explosion-proof wiring. Refer to 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 ohm or less. ≤ 400m - 0.75 mm² wire ≤ 600m - 1.25 mm² wire ≤ 1km - 2.00 mm² wire When using a zener barrier to connect to an intrinsically safe gas detector, choose a wire and its 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 five groups, with wiring varying from group to group.
For type selection, please contact New Cosmos or its authorized representative. 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 13 for typical configuration using a zener. * To comply with IP2X, it is necessary to take measures to prevent fingers from being able to enter through the cable opening 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. ● Typical Gas Detector Connections for Group 1 (V3 Type: Hv/Cv/Tv) P-N: 24 VDC detector power source G-H: 4-20mA detector analog output ...
6-2-2. Connecting Power Cable
Use a dedicated breaker for the power cable going to this gas alarm system. “AC100～240V INPUT”, “AC100V INPUT”, or “DC24V INPUT” is marked on the power terminal block. Check that the marking matches what you specified at time of order, then connect the power cable to the power terminal block. 6-2-3. Alarm Contact Connection
/\\ CAUTION
• Connect external equipment with a max load: 100 VAC, 1A or 24 VDC 1A to the Collective terminal block. Connect external equipment with a max load: 250 VAC 2A or 24 VDC 2A (resistive load) to the Dedicated terminal blocks. New Cosmos is not responsible for any damage resulting from incompatibility with third party equipment (e.g. interlock) using gas concentration signals (analog output, alarm contact output) from this New Cosmos gas alarm system. •
(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. Alarm Reset (AR) and Alarm Silence (AS) terminals are not relay contacts. Adding a switch between N and AR/AS terminals enables alarm * When using N.C. contacts for 1 * and 2 * alarms, ZA1and ZA2 become ZB1 ZB2 respectively. *N.O.: Normally open. N.C.: Normally closed. Figure 16. Wiring Diagram of Collective Terminal Block (2) Dedicated alarm contact connection To use the Dedicated alarm contacts, connect wires from external devices to the Dedicated terminal block.
6-2-4. Analog Output Terminal Connection
To continuously monitor and record gas concentrations sent from a gas detector on site, connect an external recorder to the Analog Out terminals on the dedicated terminal block. Refer to Figure 17 above. The standard analog output is 4-20mA. Use a recorder with resistive load of 300 ohm or less when using the standard analog output. 1-5 V analog output is also available if specified at time of order. When using 1-5 V analog output, use a recorder with resistive load of 100k ohm or more.
7. Operation
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 detection and 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. After making sure that the power source voltage and the wiring are correct, take the following steps to operate the gas alarm system.
(1) Power-on
Set the power switch to the on position. The green POWER lights on all the indicator units will start flashing and the warm-up cycle will start, while only the green POWER light on the alarm unit will turn on and not flash during the warm-up cycle.
(2)  Warm-up
Once the warm-up cycle is completed, the green flashing POWER lights will be steady, and normal operation will begin. The time needed for the warm-up cycle varies depending on the detection principle of the sensor type. 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.
8. Maintenance

Perform routine checks and annual inspection as given in the table below.
Important Notice for Scheduled Inspection
In order to ensure the reliability of the gas detection and alarm system, it is vital to perform periodic maintenance and inspections. It is highly recommended that a maintenance contract with a local New Cosmos representative be made for the performance of scheduled inspections. Installation, inspection, maintenance, calibration, and proof testing shall only be performed by trained personnel. ●
/!\ CAUTION
Performing an alarm operation check by pressing the test button activates the analog output, alarm contact output, and output to the alarm unit (deactivated during maintenance mode). If the alarm contact output is used to interlock external devices, release the interlocks of the external devices and set the unit to maintenance mode to prevent possible activation of the alarm contact. Notify all personnel before starting the alarm operation check.
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.
N.O.: Normally open.   N.C.: Normally closed.   N.O.-C-N.C.: Normally open, common, normally closed.
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 free replacement 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. Please also note that even if the product is calibrated, it may fail to operate correctly before the next calibration.
13. Glossary

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 URL: http://www.newcosmos-global.com new cosmos electric co.,Ltd.