Honeywell VR4611QB2000 gas valve

Honeywell VR4611QB2000B gas valves are designed for reliable gas flow control in home heating systems, boilers and water heaters. They perform standard functions and can be supplemented with various devices, such as pressure regulators, throttle valves, devices for smooth ignition, two-level regulation and control of gas flow. The Resideo VR4611QB 2000B Compact Automatic gas regulators are available with various power options, including mains or low-voltage, and have different bandwidth.

The Honeywell VR4611QB2000 gas valve is also suitable for FERROLI PEGASUS F3 boilers N 153-170-187-221-255-189 2S: 39813890, 36802990.

These gas solenoid valves are equipped with two electrical actuating devices: one for opening a safety valve of class A or B according to EN 161 and the other for opening the main valve of class B, C or J according to EN 161. They are suitable for working with different types of gases, including MFD Group A (G110), MFD group B (G120), natural gas H (G20), natural gas L (G25) and liquefied gas LP (G30).

General characteristics

– Input and output are suitable for flanged connection

– Screen on the input side

– Pressure valve on the inlet and outlet sides

– Gas connection inlet: diameter 23 mm, outlet: diameter 23 mm

– Compression fitting –

– Back pressure of the 1st valve: 50 mbar; of the 2nd valve: –

– Ambient temperature 0…60°C

– Maximum inlet pressure 60 mbar

– CE compliance yes

Notes:

Coil with top connection

Switchable soft lite (in combination with adapter assembly)

Management functions

– Maximum operating pressure 45 mbar

– Control flow rate of 0.1 m3/h (min)

– Leakage requirements according to EN 126

– Capacity (by air) 4,6 m3/h with a pressure drop of 5 mbar

– Softlite pressure 5 mbar -3.5/+0 after 1.5 s

Standard conditions

• Flow indication, m3/h

• Registration of the output pressure using a sensor connected to a half-inch pipe, the length of which is 10 times the diameter, by means of a short hose with a length equal to 5 diameters

• Rated voltage

• Vertical position, i.e. the position when the actuators are on top

• Nominal pressure 25 mbar, dry air at 20 °C

• Ambient pressure = 1013 mbar

• Ambient temperature = 20 °C

• 2.8mm output aperture

General provisions

Common features include the possibility of use with gas heating systems that support DSI, HSI or IP ignition for the main burner.

The main burner is controlled by two-position electrical actuators.

The VR4611 QB 2000B gas valve includes an internal fine mesh filter on the inlet side and can be equipped with an outlet mesh filter on request. Various models with different closing strength are available: B+ B, B + J, B+C, A+ J and A+C.

To control and adjust the pressure of the burner, there are pressure measuring fittings with an outer diameter of 9 mm on the input and output sides. The regulator can be mounted within an angle of 90° in any direction from the vertical position of the two-position electric actuator.

The base of the VR4611QB2000U gas valve has two threaded mounting holes for mounting on the heating system. The two-position actuator of the tracking type of the main valve is equipped with an electrical connector according to DIN standard and can be connected to AMP connectors.

The principle of operation

The principle of operation of the Honeywell VR4611QB 2000U regulator is the automatic control of the gas outlet pressure. It is equipped with a built-in positive feedback system, which ensures reliable closure of the main valve in the event of a power failure or gas supply. This system ensures a stable outlet pressure regardless of changes in the inlet pressure. When disconnecting small volumes of gas from the regulator, the outlet pressure is adjusted to compensate for the pressure difference. If pressure regulation is not required, the regulator spring can be locked, and the full pressure of the “servo gas” will determine the position of the main valve to control the output pressure.