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Installation and operating
Instruction Gas Valve M2C
Combination Gas valve
with 2 safety valves and
constant pressure regulator
for light commercial
pressure jet burners.
Application
The use of the SUNTEC M2 combination gas valve is recommended for all gaseous fuel
appliances where safety shutoff and pressure control is required. It is suitable for use
with 1st, 2nd and 3rd family gases, according to EN 437, for inlet pressure up to 360mbar.
Approvals
SUNTEC M2 combination gas valve meets all the specifications of EN 13611, EN 126,
EN 88-1 and EN 161 standards. It complies with requirements of regulation (EU) 2016/426
on appliances burning gaseous fuels (EC certificate : 1312CU6361).
SUNTEC INDUSTRIES FRANCE - 1, rue Lavoisier - CS 60102 - F-21603 LONGVIC Cedex
Tel. +33 (0) 3 80 70 60 70 - information@suntec.fr - http://www.suntec.fr
IIM2C - Ed.2 - May 2020
1
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Summary of Contents for SUNTEC M2C
- Page 1 Application The use of the SUNTEC M2 combination gas valve is recommended for all gaseous fuel appliances where safety shutoff and pressure control is required. It is suitable for use with 1st, 2nd and 3rd family gases, according to EN 437, for inlet pressure up to 360mbar.
- Page 2 Technical specifications Gas of 1st , 2nd and 3rd families, according to EN 437, Maximum operating pressure : 360mbar. Pipe sizes Inlet / outlet connection with straight flange : DN15 (1/2’’) or DN20 (3/4’’). Internal thread according to EN 10226-1. Torsion / Bending stress M2 gas valve fulfill group 2 requirements, according to EN 13611.
- Page 3 Flow curves P burner = 3mbar Flange = 3/4’’ Maximum flow can be reduced when other flanges are connected with. Operating principle P in : Inlet pressure P1 : Strainer pressure P2 / P3 : Regulated pressure P out : Outlet pressure F : Strainer P : Pressure regulator V1 : Safety shut-off valve 1...
- Page 4 Working principle Safety valve M2 gas valve comprises two class A automatic shut- off valves, electrically operated. Each operator consists of a plunger connected to a rubber seal. A closing spring presses the seal against the seat, and thus ensures the tightness of the valve. At rest, both safety valves are closed;...
- Page 5 Installation Cautionary statements Please read carefully these instructions before installing, commissioning or using the product ! Hazardous situation or damaging the product may result from their non-observance. Herein specified ratings and product markings must be checked to ensure compatibility with the appliance.
- Page 6 Leak proof test Check for gas leaks of all pipe connections with a gas leak detection spray. To ensure an effective leak test of all connections, the gas valve must be energized (through the complete appliance) to raise pressure all over the valve. In case of leak detection, gas supply must be shut off upstream and connection tightness redone.
- Page 7 Default configuration for M2 gas valve consists of 2 pressure taps (P2 and P out), and 2 plugs (P1 and P3) as shown below. P3 pressure tap can be modified upon demand (consult SUNTEC). Following pressure signal can be selected :...
- Page 8 . Pressure plugs and pressure taps are fully interchangeable. ⑤ Only SUNTEC pressure taps and plugs, equipped with suitable EN 549 O-ring can be used for replacement. - Unscrew the plug/tap with the appropriate hex key, - Place and screw the new plug/tap with a 3.5 N.m torque.
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