Wood-Fired Cooking, Baking and Room Heat from a Single Cast-Iron Range

The Deva (Model 8220) is a wood-fired cook stove with a 2.5 cu. ft. stainless-steel baking oven, a ceramic glass cooktop, and a maximum heat output of 46,000 BTU/hr.

Key Features

• 2.5 cu. ft. stainless-steel baking oven — equipped with racks; HearthStone describes the oven as large enough to cook a 20-pound turkey. The current owner's manual prints the exact oven capacity as 2.47 cu. ft.
• Vitreoceramic cooking surface — HearthStone describes the ceramic glass cooktop as easy to clean, scratch resistant, and spacious enough for a number of pots and pans.
• Maximum heat output 46,000 BTU/hr of cordwood — the current owner's manual qualifies this figure as based on independent laboratory test results.
• 1.6 cu. ft. firebox — burns natural cordwood, with a maximum log length of 17" through the fuel loading door.
• Adjustable oven temperature control — a single control regulates the amount of hot air circulating around the oven, per the current HearthStone product information.
• Flue bypass system — a push-pull handle at the top center of the stove opens a direct flue route to help establish draft on a cold start, then closes to route hot gases around the oven.
• Non-catalytic wood combustion with secondary combustion — the current Model 8220 manual describes a secondary combustion system, and the Deva is a non-catalytic appliance.
• Ash pan included — located under the fuel loading door and removed through the ash door.
• Top or rear 6" flue exit — the flue collar can be relocated from the top exit to the rear exit using the procedure in the current manual.
• EPA Rating: Exempt — per current HearthStone consumer information; the appliance is tested to UL 1482-2022 and ULC S627-2021.

Product Features

Wood-Fired Cooking and Heat

The Deva is a freestanding wood cook stove, not a wood space heater and not a gas or electric range. A single cordwood fire in the 1.6 cu. ft. firebox heats the ceramic glass cooktop, the stainless-steel oven, and the room around it. The current owner's manual publishes a maximum heat output of 46,000 BTU/hr of cordwood, based on independent laboratory test results. The manual identifies the appliance as the Deva 100; HearthStone's current consumer material calls it the Deva. Both names refer to Model 8220.

2.5 Cu. Ft. Stainless-Steel Oven

The oven is constructed from stainless steel, is equipped with racks, and is described by HearthStone as large enough to cook a 20-pound turkey. Current HearthStone consumer material and the 2026 catalog publish the oven capacity as 2.5 cu. ft.; the current owner's manual prints 2.47 cu. ft. An analog oven thermometer is fitted to the oven door area so the cook can read oven temperature directly.

Vitreoceramic Cooking Surface

The cooktop is a vitreoceramic (ceramic glass) surface. HearthStone describes it as easy to clean, scratch resistant, and spacious enough for a number of pots and pans.

Adjustable Oven Temperature Control

A simple control regulates the amount of hot air circulating around the oven, which HearthStone presents as the means of holding a consistent baking temperature. Oven performance depends on fuel, draft, and how the stove is operated.

1.6 Cu. Ft. Firebox

The firebox holds 1.6 cu. ft. and accepts logs up to 17" long through a 7" × 9-3/4" fuel loading door. The current manual directs that natural wood only be burned and specifically prohibits kiln-dried wood, painted or treated wood, solvents, trash, plywood, colored or glossy paper, artificial logs, cardboard, coal, garbage and driftwood, along with gasoline, kerosene, lighter fluid, other liquid fuels and solid fire starters. A primary air control on the ash door regulates the air entering the firebox.

Flue Bypass System

The flue bypass is a handle at the top center of the stove that pushes in and pulls out. Opened, it gives flue gases a direct route out so the chimney heats and draft establishes faster on a cold start. Closed, hot gases travel their normal route around the oven. The current manual warns that burning the Deva 100 with the bypass open will not allow the oven to reach maximum temperatures.

Included Ash Pan

An ash pan sits under the fuel loading door and collects ash from the fire. It is reached through the ash door and slides out for emptying. The current manual directs that ashes be removed only when the stove is cold.

Top-or-Rear 6-Inch Venting

The Deva vents through a 6" diameter flue collar at either the top or the rear of the stove. The current manual gives the procedure for moving the collar to the rear exit and covering the top exit with the block-off plate. Choice of exit affects the published clearances and, for a horizontal connector, adds a floor-protection requirement beneath the connector.

Available Finish and Configuration

The Deva is offered in one current configuration.

Specifications

Clearances and Hearth Requirements

The current Model 8220 manual is the governing source for every clearance and hearth requirement. The customer-readable side and rear clearances below come from HearthStone's current published summary; the manual's own lettered clearance table carries the complete set and must be used for installation planning. The Deva is to be installed as a freestanding cook stove.

Chimney connector clearance is a separate requirement and is not covered by the appliance clearances above. The current manual states that the single-wall connector clearances it shows are generic and that the double-wall clearances shown are specific to Simpson Dura-Vent DVL, and it directs the installer to check the specifications from the manufacturer of the connector actually used. A close-clearance connector pipe must be tested and listed to UL standards, and its own listing governs its clearances. The manual also notes that clearances to combustible surfaces may be reduced using an NFPA-approved wall protection system, referring the installer to NFPA 211 for specifications and complete details. Do not apply a protected-surface reduction to the base values above without following the manual and NFPA 211.

Floor protection is required. The following values come from the current Model 8220 manual and HearthStone's current published hearth-pad summary.

The manual gives R-value conversion formulas for floor protectors specified by K-factor or C-factor, and allows the R-values of multiple layers to be added. Confirm the final assembly with your installer, local code, and the authority having jurisdiction.

Alcove Installation

Unlike several other HearthStone appliances, the Deva has published alcove installation requirements. The manual's alcove clearance table is printed for the top-exit connector configuration.

The alcove clearances themselves are published in the manual as a lettered table with separate single-wall and double-wall connector columns. Consult the current Model 8220 manual's alcove table for the full connector-specific requirements before planning an alcove installation.

Chimney and Venting Requirements

The Deva requires a 6" inside diameter flue for a new installation. An existing 8" diameter flue may be used with a reducer. A prefabricated metal chimney must be Type HT (2100°F), listed to UL 103 or ULC S629. A lined masonry chimney may also be used; the manual specifies brick or modular block at least 4" thick or a rubble or stone wall at least 12" thick, a flue liner at least 5/8" thick installed with refractory mortar and at least a 1" air space, at least 2" clearance to combustible structure inside the building and at least 1" outside it, and identifies an 8" × 8" tile flue as the size that gives best results. Have an existing masonry chimney professionally inspected before installation and make sure the cleanout is functional and sealed.

Minimum chimney height is 13 ft and maximum chimney height is 30 ft. The Deva requires a draft between 0.06" w.c. and 0.10" w.c.; for drafts above 0.10" w.c. the manual requires a stovepipe damper. Horizontal runs of stovepipe must rise away from the stove a minimum of 1/4" per foot. Do not connect this stove to a chimney serving another appliance. The chimney must terminate at least 3 ft higher than the highest part of the roof opening and at least 2 ft higher than any part of the roof within 10 ft.

Included Equipment

• Ash pan (included)
• Stainless-steel baking oven, equipped with racks (integral appliance components)
• Vitreoceramic cooking surface (integral appliance component)
• Analog oven thermometer (integral control shown in the manual's controls and features figure)
• Flue bypass system (integral)
• Primary air control (integral)
• Refractory firebox components (integral appliance components)

The current Model 8220 manual does not print a formal itemized pack list; the items above are the equipment confirmed by current official HearthStone sources. The manual directs that the stove and all parts be inspected on delivery and that a dealer be contacted immediately if anything is damaged or missing.

Compatible Accessories

No separately priced Deva accessories are listed in HearthStone's current dealer pricing, and HearthStone's current Deva product information states that there are no accessories listed for this product yet. No outside-air kit is offered for this appliance. Contact Cozy Glow Stoves for current service, replacement-part, or installation-component availability.

Warranty

The Deva is covered by HearthStone's applicable limited manufacturer warranty. Coverage, exclusions, eligibility, and claim requirements are governed by the current HearthStone warranty policy supplied with the appliance. Warranty registration is not required for coverage — HearthStone's current warranty and registration information states that completion of the warranty registration form is not required to be eligible to receive warranty parts or service, and the manual's own warranty registration page states that sending in the signed registration form is not a condition of warranty coverage. Retain your proof of purchase.

About HearthStone

HearthStone Quality Home Heating Products of Morrisville, Vermont has built wood and gas hearth appliances for more than four decades. The Deva is HearthStone's wood cook stove: one cordwood fire serving a baking oven, a ceramic glass cooktop, and the room.

Cozy Glow Stoves is an authorized HearthStone dealer. Visit our Logan, Ohio showroom to see HearthStone products in person, or contact us with questions about the Deva, current pricing, and installation planning.