Pressure Switch for Gas DG..C

The DG..C pressure switch monitors the increasing or decreasing positive pressure of natural gas, town gas, LPG, flue gas, biologically produced methane, and air, for example, on a gas control line.

If the gas pressure either exceeds or falls short of a set switching point, a NO contact or a change-over contact will switch in the pressure switch. With the DG..VC, the switching point can be adjusted using a hand wheel.

The DG..VC is suitable for heating boilers, for example, which are operated with LPG as well as natural gas.

In the case of the double pressure switch DG../..VC, the minimum and maximum switching point can be set on two hand wheels. Using this function, a system is controlled to prevent gas deficiencies and excess gas pressure. For pressure control it requires only one gas connection. The electrical connections can be fed in from one direction.

For attachment to gas solenoid valves or pressure regulators from the Valvario range, or to CG combination controls, the DG..C is attached to the control with the flat sealing lower section.

The pressure switch DG..C is easy to install and is available with an internal or an external thread connection. For the external thread connection, the DG..C can be provided with a sealant. The sealant is approved and nonsetting.

Features

• Switching point pre-set as desired at the factory
• Simple switching point adjustment with infinitely adjustable hand wheel
• Little space required thanks to compact dimensions
• Double pressure switch for minimum and maximum gas pressure monitoring in one unit
• Recyclable, no composite materials
• Suitable for natural gas, town gas, LPG, flue gas, biologically produced methane and air
• Several connection facilities using various lower sections
• Available with sealant-coated external thread
• EC type-tested and certified
• FM approved and UL listed
• RoHS compliant

	Documentation Manufacturer's Product Brochure Manufacturer's Installation Instructions Manufacturer's Technical Sheet
	Ordering Information Model Max Setting (mbar) Switching Point Adjustment Connections Price (US List) Order Now DG 17VCT8-6W 17 on hand wheel ¼" NPT external thread; 4-pin plug with socket, change-over contact $82 DG 110VCT8-6W 110 on hand wheel ¼" NPT external thread; 4-pin plug with socket, change-over contact $82 DG 300VCT8-6W 300 on hand wheel ¼" NPT external thread; 4-pin plug with socket, change-over contact $82 DG 17VCT1-6W 17 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact $98 DG 40VCT1-6W 40 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact $98 DG 110VCT1-6W 110 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact $98 DG 300VCT1-6W 300 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact $98 DG 17VCT1-6WG 17 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact; gold-plated contacts $109 DG 40VCT1-6WG 40 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact; gold-plated contacts $109 DG 110VCT1-6WG 110 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact; gold-plated contacts $109 DG 300VCT1-6WG 300 on hand wheel Valvario connection; 4-pin plug with socket; change-over contact; gold-plated contacts $109 For all other configurations Contact Combustion 911
	Applications Click on images for close-up view. Boilers The DG..C controls the minimum or maximum gas inlet pressure on high-performance boilers. Low-pressure cut-off and high gas pressure protection device If the pressure is either too high or too low, the double pressure switch DG../..C switches, in order to avoid start-up or to initiate a safety shut-down. Fan monitoring On forced draught burners, the minimum or maximum pressure is retrieved by the burner control unit via the pressure switch DG..C. If the set switching point is exceeded or undershot, the fan will either be switched on or off by the burner control unit.
	Specifications General Specifications Gas type: natural gas, town gas, LPG, flue gas, biologically produced methane and air Max. inlet pressure: 600 mbar (8.5 psig) Max. test pressure for testing the entire system: temporarily < 15 minutes 2 mbar (29 psig) Switching capacity: DG..C, 24 – 250 V AC: I = 0.05 – 5 A at cos φ =1, I = 0.05 – 1 A at cos φ = 0.6. DG..C..G, 12 – 250 V AC: I = 0.01 – 5 A at cos φ = 1, I = 0.01 – 1 A at cos φ = 0.6. DG..C..G, 12 – 48 V DC: I = 0.01 – 1 A. DG..VCT, 30 – 240 V AC: I = 5 A at cos φ = 1, I = 0.5 A at cos φ = 0.6. DG..VCT..G, < 30 V AC: I = 0.1 A at cos φ = 1, I = 0.05 A at cos φ = 0.6. If the DG..C..G (DG..VCT..G) has switched a voltage > 24 V (> 30 V) and a current > 0.1 A once, the gold plating on the contacts will have been burnt through. It can then only be operated at this power rating or higher power rating. Ambient temperature: DG..C: -10 to +70°C (14 to 158°F) DG..CT: -15 to +60°C (5 to 140°F) Construction: RoHS-compliant pursuant to 2002/95/EC. Diaphragm pressure switch, silicone-free. Diaphragm: NBR. Housing: glass fibre reinforced PBT plastic with low gas release. Lower housing section: AlSi 12. Enclosure: IP 54 pursuant to DIN EN 60529 with standard socket to DIN EN 175301-803, IP 00 with AMP plug. Safety class: 1. Maintenance: We recommend a function check once a year. Certifications: EC type-tested and certified pursuant to Gas Appliances Directive (90/396/EEC). Meets the requirements of the Low Voltage Directive (2006/95/EC) FM approval: Factory Mutual Research Class: 3510 Flow and pressure safety switches. Designed for applications pursuant to NFPA 85 and NFPA86. www.fmglobal.com → Products and Services → Product Certification → Approval Guide UL approval: Standard: UL 353 Limit control. Underwriters Laboratories - www.ul.com → Certification

Pressure Switch for Gas DG..CT