Operation, Recommended Procedure | Honeywell V4062B, V4062C specification

V4062A,B,D HI-LO-OFF FLUID POWER GAS VALVE ACTUATOR

Recommended Procedure

To adjust the low-fire setting without energizing the actuator, proceed as follows:

1.Remove the wiring compartment cover.

2.Manually rotate the cam and dial assembly downward so that the setscrew is accessible from the front of the actuator.

3.Loosen the setscrew on the low-fire cam using the special wrench (supplied taped to the inside of the actuator cover).

4.Set the cam to the predetermined low-fire setting for the burner being used.

5.Tighten the setscrew in the cam.

6.Replace the wiring compartment cover.

Alternate Procedure

To adjust the low-fire setting after the burner is in operation, use the following instructions:

1.Remove the wiring compartment cover.

2.Check to be sure the low-fire adjustment is set at MAX to assure a safe lightoff. (Low-fire adjustment is preset at the factory in the MAX position.)

3.Disconnect the firing rate controller leadwire from terminal 4 on the actuator to keep the valve in the low- fire position (Fig. 4).

4.Start the system and establish the main burner flame.

5.Loosen the setscrew in the cam (Fig. 5) with the special wrench. Keep the wrench seated in the setscrew. Rotate the cam slightly downward (by moving the wrench toward the actuator base) to open the bleed valve. The actuator will start to close.

6.When the valve reaches the desired low-fire position, quickly tighten the setscrew and remove the wrench. If the desired low-fire setting is missed, loosen the setscrew and rotate the cam in the opposite direction to the desired setpoint.

7.Shut down the burner, and then restart. Repeat several times to be sure the low-fire setting is suitable for correct burner lightoff. Readjust, if necessary.

8.Disconnect power and reconnect the controller leadwire removed in step 3.

9.Replace the wiring compartment cover.

Adjust Auxiliary Switch (If Used)

The auxiliary switch can be adjusted to operate at any point in the actuator stroke. After installing the switch in the actuator, turn the adjustment screw (Fig. 2) clockwise

to cause the switch to operate earlier in the stroke or turn

counterclockwise to cause the switch to operate later in the stroke.

NOTE: The proof-of-closure switch is not adjustable.

Adjust Max Flow Limit Switch (Fig. 2)

The Max Flow Limit Switch is adjustable throughout the actuator stroke. With the switch installed in the actuator, turn

the adjusting screw clockwise to cause the switch to operate earlier in the stroke (less flow) or counterclockwise to cause the switch to operate later in the stroke (more flow).

OPERATION

To function as intended, the V4062 must be connected to a properly sized valve. Too large a valve will not properly control the gas flow.

When the actuator is energized, it drives to the adjustable low-fire position. Depending on the demand of the controller, the valve remains at low-fire or moves to the high-fire position. When the firing rate controller calls for no heat, the actuator returns the valve to the low-fire position. When power to the actuator is interrupted, the valve completely closes.

Fig. 4 shows the V4062 in a typical flame safeguard control system.

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V4062C, V4062B specifications

The Honeywell V4062B and V4062C are advanced zone valves that play a critical role in modern heating and cooling systems. Designed for use with hot water heating systems, these valves provide efficient control of fluid flow in residential and commercial HVAC applications.

The V4062B series features robust construction and is designed to handle a range of installation environments. It operates on a two-wire system, simplifying wiring and installation. The valve is typically used for applications involving fan coil units, radiant heating, and other hydronic systems. With a high flow capacity, the V4062B allows effective temperature regulation throughout various zones, ensuring optimal comfort in any setting.

On the other hand, the V4062C model brings additional functionalities. This variant includes a microprocessor-based system that enhances control capabilities. The smart technology embedded in the V4062C enables precise modulation of water flow based on real-time temperature readings. This innovative feature significantly improves energy efficiency, ultimately leading to lower operating costs.

Both the V4062B and V4062C models incorporate durable materials to guarantee longevity and reliability. The valve bodies are crafted from corrosion-resistant brass, ensuring a prolonged lifespan even in challenging environments. Additionally, they are designed with a union connection that facilitates easy installation and maintenance, reducing labor costs and downtime.

An important characteristic shared by both models is their compatibility with standard 24 VAC systems, allowing them to seamlessly integrate with existing HVAC setups. Moreover, they feature a compact design, which is particularly advantageous in installations with limited space. This adaptability makes them a popular choice among HVAC professionals seeking reliable and efficient solutions.

Both the V4062B and V4062C series valves are equipped with manual override features, enabling users to adjust flow manually when needed. This can be especially useful in emergency situations or during system maintenance.

In summary, the Honeywell V4062B and V4062C valves stand out for their reliability, efficiency, and advanced technology. With their durable construction and smart control features, they serve as efficient solutions for managing zoning within heating and cooling systems, promising comfort and energy savings for any property.