Honeywell S4965V3208 Automatic Burner Control

1.General Description

The S4965V3208, also known as Honeywell S4965V3208 or Resideo Boiler Controller S4965V3208, is a boiler controller. It uses a microprocessor and manufacturers design it for gas heating systems in homes.

Engineers design the Honeywell S4965 Series Boiler Control for gas-fired home appliances. It offers automatic ignition, flame supervision, and control of the flame size.

The control combines safety and comfort functions into one small unit. People usually use it with a VK41-series gas regulator. This setup manages main burner ignition, flame sensing, gas control, pump, and 3-way valve functions. It ensures the system functions correctly under all operating conditions.

It complies with EN 298 and EN 60730-1/2-5 standards for automatic gas burner control systems. Engineers designed the S4965V3208 control system for home and light-commercial use. It ensures safe ignition, flame monitoring, and reliable operation.

2.Specification of controle honeywell s4965v3208

Electrical & Environmental

l Supply voltage: 230 Vac ± 15% at 50 Hz ± 2%.

l Power consumption: approx 5 VA.

l Ambient temperature range: –20 °C to +60 °C.

l Maximum humidity: 90% RH at 40 °C (non-condensing).

Outputs & Inputs

l Multiple 230 Vac outputs (for fan, pump, 3-way valve, etc.), each rated up to approx 0.8 A (cos ϕ ≤ 0.6).

l Room thermostat input: 230 Vac, 1 mA or via communication.

l Gas valve output: 230 Vac, 50 mA.

l Sensor inputs (e.g., NTC high-limit, water pressure switch): low-voltage (12 Vdc or 5 Vdc) with specified impedance.

Ignition & Flame-Control

l High-voltage spark for ignition: 15 kV @ 30 pF typical.

l Spark frequency: approx 15 Hz.

l Minimum detectable ionisation flame current: adjustable between ~0.5 µA and ~5 µA.

l Timing windows (pre-purge, pre-ignition, stabilization, post-purge) are 0-51 seconds. They can also be up to 255 or 600 seconds, depending on the version. A tolerance of ± 5% exists.

Certifications

l Conforms to EN 298 (2003) and EN 60730-1 / EN 60730-2-5.

Mechanical / Mounting

l Control module: ABS plastic, V-0 flame class.

l External fuse: 2 A slow, sand filled.

l Follow appliance manufacturer’s instructions for installation, electrical connection, and adjustment to avoid equipment damage.

3.Application of контроллер управления горением s4965v3208

The Honeywell S4965V3208 Automatic Burner Control serves gas heating systems in homes.

It controls gas-fired heating appliances such as domestic boilers, combination boilers, water heaters, and warm-air systems.

This boiler controller automatically manages all burner operations. It ensures safe ignition, flame supervision, gas valve control, and heat demand regulation. This way, the burner and control systems work correctly during the entire cycle.

The installer should watch a full cycle. This ensures all burner functions work well and the appliance meets specifications.

Only qualified persons should perform the installation, adjustments, and final checkout. Before beginning any work, always disconnect the power supply to prevent electrical shock. Follow the appliance manufacturer’s service and maintenance instructions carefully, including diagrams for typical systems and procedures for adjustment and starting the appliance.

This control works with Honeywell VK41 series gas valves and compatible sensors. Suitable for single- or two-stage burners, modulating systems, and condensing or low-NOx boilers.

It supports fan, pump, and 3-way valve management, ensuring efficient combustion and long-term reliability. Ensure that the installer has training and experience for safe and correct operation.

4.Related Part Numbers of automatic control honeywell (resideo) s4965 v 3208

l S4965V3208 – Primary reference model

l S4965V2208 – Related variant

l S4965A3017 – Variant from the S4965 A-series

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