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Honeywell VR8345K4809 Universal 24V Gas Valve for Multi-System Furnaces and Boilers

Name: Honeywell VR8345K4809 Universal 24V Gas Valve for Multi-System Furnaces and Boilers
Brand: Honeywell
SKU: HNW-VR8345K4809

Delivery Time: 0-3 days

Brand Honeywell

Model Number VR8345K4809

EpicRise Warranty First Year

Product Highlights

• Universal replacement for IP, HSI, and DSI gas controls across furnaces, boilers, unit heaters, and pool heaters

• 30,000 to 415,000 BTU/hr capacity range covers most residential and light commercial heating applications

• Compact design with 4-inch swing radius fits tight furnace vestibules and simplifies field replacements

• Multi-position mounting from 0° to 90° including vertical installation for flexible equipment integration

• Dual redundant valve design with slow-opening pressure regulation for enhanced safety and smooth operation

Overview
Specifications
FAQ
User Guides
Reviews

The Honeywell VR8345K4809 is a universal 24 VAC gas valve engineered to replace multiple legacy IP, HSI, and DSI gas controls in residential and light commercial heating equipment. Its wide 30-415 CFH capacity range and compact multi-system design reduce inventory requirements while simplifying HVAC technician field service operations.

This combination gas control integrates manual shutoff, dual automatic operators, pressure regulator, pilot adjustment, pilot shutoff, and ignition adapter into a single assembly measuring just 5-3/8" × 4-1/16" × 2-11/16". The slow-opening pressure regulation and dual redundant valve architecture meet modern safety standards while the top-accessible connections and keyed terminal block accelerate installation in space-constrained applications.

Best For

Designed for HVAC contractors and facility maintenance teams managing diverse heating equipment fleets requiring flexible gas control solutions.

- Furnace Retrofits: Universal replacement for obsolete IP/HSI/DSI gas valves in residential forced-air furnaces without equipment-specific part stocking

- Commercial Boiler Systems: Multi-position mounting and 415,000 BTU/hr capacity support light commercial hydronic heating applications

- Unit Heater Installations: Compact 4-inch swing radius enables installation in industrial unit heaters with limited vestibule clearance

- Pool Heater Service: Natural gas to LP conversion capability with included kit accommodates diverse fuel supply configurations

- Mixed Equipment Facilities: Single valve model consolidates parts inventory for maintenance operations managing multiple furnace brands

Key Features

- Universal Ignition Compatibility: Supports intermittent pilot (IP), hot surface ignition (HSI), and direct spark ignition (DSI) systems through keyed terminal block with clear jumper labeling

- Wide Capacity Control: Adjustable from 30,000 to 415,000 BTU/hr on natural gas (48,600 to 672,300 BTU/hr on LP) covers most residential and light commercial heating loads

- Slow-Opening Pressure Regulation: 3.5" WC regulator set point with gradual valve opening reduces flame rollout and thermal shock in older heat exchangers

- Compact Multi-Position Design: Four-inch swing radius and 0-90° mounting angle range facilitate installation in tight furnace cabinets and vertical applications

- Top-Accessible Connections: All electrical terminals, pressure taps, and adjustment screws accessible from valve top eliminate need to remove valve for service adjustments

- Integrated Contamination Protection: Internal inlet screen blocks pipe debris before reaching valve seats while 1/4" OD compression pilot outlet includes built-in filter

- Dual Fuel Capability: Includes conversion kit with regulator spring, O-ring, and adjustment hardware for field conversion between natural gas and LP service

- Extended Temperature Range: -40°F to +175°F operating range supports installations in unheated mechanical spaces and high-ambient commercial environments

Quick Specs

Model Number	VR8345K4809/U
Valve Type	Slow-Opening Intermittent/Direct Ignition, Single-Stage
Power Requirements	24 VAC, 50/60 Hz, 0.7 Amps
Inlet/Outlet Connection	3/4" × 3/4" NPT Threaded
Natural Gas Capacity	30,000 - 415,000 BTU/hr (30-415 CFH)
LP Gas Capacity	48,600 - 672,300 BTU/hr
Pressure Regulation	0.5 psi Inlet, 3.5" WC Outlet (Slow-Opening)
Pilot Outlet	1/4" OD Compression Fitting
Pressure Tap	1/8" NPT Threaded with Plug
Terminal Type	1/4" Male Quick-Connect Spade Terminals
Operating Temperature	-40°F to +175°F (-40°C to +79°C)
Mounting Orientation	0° to 90° Any Direction (Including Vertical)
Dimensions (H×W×D)	5-3/8" × 4-1/16" × 2-11/16" (135×104×69mm)
Swing Radius	4 inches

What's Included

- VR8345K4809 combination gas control valve assembly with integrated manual shutoff, dual automatic operators, pressure regulator, pilot adjustment, pilot shutoff, and ignition adapter

- Two 3/4" × 1/2" reducing bushings for smaller pipe connections

- Natural gas to LP gas conversion kit including regulator spring, O-ring, adjustment screw, and cap screw (8"-12" adjustment range)

- ECO adapter with 1/4" × 0.032" quick-connect terminal for VR8200 and VR8300 series compatibility

What types of heating systems is the VR8345K4809 designed to work with?

The VR8345K4809 works with furnaces, boilers, unit heaters, space heaters, and pool heaters using intermittent pilot (IP), hot surface ignition (HSI), or direct spark ignition (DSI) systems. It handles natural gas, manufactured gas, or LP gas in 24 VAC, 50/60 Hz applications. The 30,000-415,000 BTU/hr capacity range covers most residential and light commercial heating loads.

How does the VR8345K4809 compare to the VR8245M series valves?

The VR8345K4809 offers higher capacity than VR8245M series valves, handling 30-415 CFH compared to VR8245M's 20-200 CFH range. Both share the same compact design and universal ignition compatibility, but the VR8345K is specified for applications requiring output above 200,000 BTU/hr. Choose VR8245M for standard residential furnaces and VR8345K for larger furnaces, commercial boilers, or high-capacity unit heaters.

Is the VR8345K4809 cost-effective for contractors managing multiple furnace brands?

The VR8345K4809 reduces inventory costs by replacing multiple brand-specific gas valves across IP, HSI, and DSI systems. Its universal design eliminates the need to stock separate valves for different furnace manufacturers. The compact size and top-accessible connections also reduce installation time compared to equipment-specific controls, offsetting the initial valve cost through faster service calls and simplified parts management.

What ignition systems and control boards is the VR8345K4809 compatible with?

The VR8345K4809 is compatible with any 24 VAC intermittent pilot, hot surface ignition, or direct spark ignition control board through its keyed terminal block. It includes pre-wired jumper configurations for all three ignition types. The valve is not compatible with millivolt standing pilot systems or electronic controls requiring different voltage inputs. The included ECO adapter ensures compatibility with VR8200 and VR8300 series legacy connections.

What is the pressure adjustment range for the VR8345K4809 regulator?

The factory-set outlet pressure is 3.5 inches water column (0.87 kPa) with a 0.5 psi rated slow-opening regulator. The included conversion kit provides 8"-12" adjustment range when switching between natural gas and LP service. Pressure adjustments require a manometer connected to the 1/8" NPT threaded test port and must be performed by qualified technicians following installation instructions.

Can the VR8345K4809 be installed in vertical or inverted positions?

The VR8345K4809 can be mounted at any angle from 0° to 90° from the upright position of the gas control knob, including fully vertical installations. The four-inch swing radius allows rotation to fit tight furnace vestibules. All mounting orientations maintain proper valve operation due to the electronic actuation design, unlike older gravity-dependent pilot assemblies.

What is the electrical current draw of the VR8345K4809 during operation?

The VR8345K4809 draws 0.7 amps at 24 VAC during valve energization. This current requirement must be factored into transformer sizing when replacing older valves with lower current draw. The 1/4" male quick-connect terminals accept standard furnace wiring without adapters. Total system load should not exceed the control transformer's rated capacity.

Does the VR8345K4809 include built-in contamination protection?

The VR8345K4809 includes an internal inlet screen that blocks debris from gas piping before it reaches the valve seats. The 1/4" OD compression pilot outlet also incorporates filtering to protect the pilot assembly. However, external pipe contamination from new installations may require additional inline filtration per local codes. The valve does not replace proper pipe cleaning and pressure testing procedures.

Regular price: $205.00
Sale price: $205.00
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