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Product Series

TGV725

The gas combination valve is specially developed for commercial heating boiler, condensing boiler and premix burner. Products are widely used in hotels, schools, hospitals, government institutions, regional distributed heating gas boilers.

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+86-575-82052228

Category:

Gas Control Valve

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Product Description

Commodity name: TGV725

725

Combination Gas Valves TGV725

Use

• 2 shutoff valves

• Servo pressure regulator

• Inlet/outlet pressure test points

• All adjustments are accessible from the top of valve

• A fine-mesh screen is integrated at the inlet side

• Compact design suitable for installation in small modern boilers and heaters

• Specially designed for gas appliance with DBI system to light the main burner

• Servo pressure regulator ensures stable outlet pressure

• Pressure feedback ensures constant burner pressure

• Pressure switch to prevent tempering under low pressure.

• Main gas flow throttle valve regulates gas / air 1:1

Warning notes

To avoid injury to persons, damage to property or the environment, following warning notes must be observed！

Do not open, interfere with or modify the valve!

• All activities (mounting, installation, service work, etc.) must be performed by qualified staff

• Before performing any wiring changes in the connection area of the EBR…, completely isolate the unit from the main supply (all-polar disconnection)

• Ensure protection against electric shock hazard by providing adequate protection for the connection terminals.

• Check to ensure that wiring is in an orderly state

• Fall or shock can adversely affect the safety functions. Such valves must not be put into operation even if the unit does not exhibit any damage

Mounting notes

The parallel displacement regulator regulates the air/gas ratio

• Check the inlet and outlet pressure using the pressure test points provided

• Remove the protective cap

• turn the screw (white) clockwise to increase the outlet pressure

• turn the screw (white) counterclockwise to decrease the outlet pressure

• Ensure that the outlet pressure is correctly adjusted before replacing the protective cap

Regulate the main gas flow throttle valve

• turn the screw counterclockwise (yellow) to increase outlet flow

• turn the screw (white) clockwise to decrease the outlet flow

Installation notes

Main gas connection

• To prevent distortion and/or damage of the external thread, take carenot to tighten the pipe fitting too far

• Ensure that the gasket is properly placed in the right position

• Ensure that the gas flow is in the same direction as the arrow on the valve body

Pressure test points

• The valve is provided with an inlet and outlet pressure test point

• When checking the pressure, undo the screw one half turn and slip the tube over the nipple

Note

Make sure the screw is retightened after making the test.

Electrical connections

Warning

Switch off power supply before making the electrical connections. Wiring must be in accordance with local regulations. Follow the instructions supplied by themanufacture.

• Install power in accordance with the required pin connection (refer to Function)

• When making connections to the terminals of the valve, use wires and connectors which are suited for temperature up to 105℃

Checkout and Installation

• After each adjustment, put the control into operation, run it

• through several complete cycles and check to ensure that all

• burner components function correctly

Technical data

General unit data

Models	TGV725
Mounting position	Installation at any angle
Type of gas	LNG、LPG
Gas inlet pressure	Max100mba
Working voltage	220VAC,50/60H
Operating voltage tolerance	gas valve operates correctly between 85% and 110% of the rated voltage
Cut off valve rated power	44W
Cut off valve start rated current	100mA
Coil insulation grade	class F
Degree of protection	IP40
Inlet filter	no60 fine mesh
Operating temperature environment	-15-60℃
Regulating ability	Min 0.31m3/h air
Outlet pressure range for modulating	1-15 mbar
Valve class -1st safety shutoff valve -2nd safety shutoff valve	EN126 class A class A
Class of regulator	class C EN88
Closing time of safety shutoff valves	within 1S
The temperature rise of the coil	△T≤75℃
Control pressure connection mode	4mm outer diameter trachea
Weight	approx. 4600g