Vermont Casting LHER20 manual Common Flue Installations, Liner Installation, Draft Relief Opening

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Zero clearance kit minimum clearance to combustibles materials is 1" (25 mm) for B Vent (use of single wall vent is not allowed.)

As with any natural drafted appliances, the vent cap must always extend a minimum of 2' (610 mm) above any structure within a 10' (3 m) horizontal plane. (Fig. 10)

 

0 To 10'

 

 

 

2' Min. 3'

0 To 10'

 

 

Min.

(3m)

 

 

 

2'

3'

 

 

(610mm)

 

 

Min.

(914mm)

 

 

 

Min.

 

Reference

 

 

 

Point

 

 

AC246a

 

 

 

Fig. 10

Example of the 2', 3', 10' rule.

 

A minimum 12' (3.7 m) vent height is re- quired to effectively vent these fireplaces.

Common Flue Installations

In some areas it is possible to vent more than one gas appliance into the same flue. You must ensure that the flue being shared has the proper capacity to handle both appliances. Check installation codes for venting capacity information.

As always it is best to check with the authority having jurisdiction prior to commencement of the installation.

Liner Installation

Insert liner from top of chimney through the damper opening and attach to 3" flue collar for LHEC20 and LHER20 and 4" flue collar for LHEC30 and LHER30.

For best results use three (3) sheet metal screws and a hose clamp.

For natural draft inserts, packing noncombustible fiber- glass insulation around the liner in the damper area will isolate the fireplace cavity from the chimney and pre- vent drafts and noises during operation.

In case the fireplace opening is only minimum height (17¹⁄₄" (438 mm) for LHEC20 and LHER20; 21" (533mm) for LHEC30 and LHER30) and access from the front is not possible, remove the flue collar plate

-unscrew and slide out from the back of the unit. Now attach the liner to the flue collar, lift up and slide flue collar plate back onto the unit top. It is important that the plate is completely inserted and the front screw is fastened again in order to line up the flue outlet and the liner properly. (Fig. 11)

LHE Series Natural Vent Insert

If the fireplace lintel is wider than 8"

(203 mm), the height of the fireplace open- ing must be 25" (635 mm) to allow for a 90° offset elbow to be installed.

 

 

Chimney Liner

Damper

 

Damper

 

 

Chimney

Draft

 

Liner

 

 

 

 

Hood

Clamp

Screw

Clamp

 

 

 

 

 

ST1354

Fig. 11 Remove flue collar plate and attach to flue collar.

Draft Relief Opening

This insert is equipped with a draft-relief opening which receives its dilution air supply through the opening at the back of the insert. These openings must not be obstructed or entered any way. (Fig. 12)

Test Chimney Draw

1.A "Chimney Draw" test must be conducted before the installation is complete.

2.Close all doors and windows in the home and start exhaust fans in he kitchen and bathroom.

3.Light unit and operate for 5 minutes.

4.Hold an ignited match or cigarette in front of the unit. Refer to drawing for the location of the draft hood opening. (Fig. 12)

5.Check to make sure smoke from the match or cigarette is drawn into the fireplace. If it is not, turn the unit off and check for causes creating the lack of adequate draft.

Test for draft at these two openings.

FP1355

Fig. 12 Hold an ignited match in front of fireplace.

10005360

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Contents LHEC20 LHER30 LHEC30 Table of Contents Locating Your Gas Fireplace Insert With Zero Clearance Kit Installation & Operating InstructionsInsert Applications Please Read the Following CarefullyMinimum Fireplace Insert Opening Fireplace & Trim DimensionsFraming & Finishing MantelsZero Clearance Applications An alternate air supply is recommended with this componentGas Specifications Gas Line InstallationGas Inlet & Manifold Pressures High ElevationsGas Supply Pressures Installation of Trim Switch For RN/RP Gas ValvesFan Kit Fan Removal InstructionsFor left side installation, reverse switch position Venting InstallationLiner Installation Common Flue InstallationsDraft Relief Opening Test Chimney DrawCeramic Refractory Installation Blocked Flue Shut Off Switch AccessAccess to the shut off switch from outside of the insert Blocked Flue Shut Off SystemOperating Instructions Flame Characteristics Flame Adjustment RN/RP ModelsLarge Lava Rock Placement First FiringPSE Pilot What to do if YOU Smell GAS To Turn Off Gas To HeaterSymptom Possible Causes Corrective Action Troubleshooting the Gas Control SystemHoneywell Millivolt Valve Transmitter Operation Off Mode Shut Off ProcedureOn Manual Mode Instructions for RF Comfort Control ValveAuto Mode Delay Timer ModeFan Override During Auto Mode Change Between F/C Temperature UnitsAuto Path LED Count Service Action Replace valveLocal Path Trim Cleaning MaintenanceCleaning the Standing Pilot Control System Burner and Burner CompartmentLHE Series LHER20 LHEC20 LHER30 LHEC30 DescriptionRemote Switch for RN or RP Units Optional Accessories Remove the bottom door rail If Warranty Service is NEEDED… Product Covered by this WarrantyAFUE% Efficiency Ratings

LHER20 specifications

The Vermont Casting LHER20 is a premium wood-burning stove that combines efficiency, aesthetics, and environmentally responsible heating. Known for its high-quality construction and innovative technologies, this model is designed to provide optimal warmth while also enhancing any living space with its classic design.

One of the standout features of the LHER20 is its exceptional thermal efficiency. With an EPA-certified design, the stove meets stringent emissions standards, ensuring that it burns wood cleanly and efficiently. This not only helps in reducing environmental impact but also translates to longer burn times and less frequent reloading, providing convenience for users.

The LHER20 incorporates advanced air management systems that promote secondary combustion. This technology re-burns exit gases from the initial burn, maximizing fuel utilization and enhancing heat output. As a result, this stove delivers a remarkable heat output, making it ideal for heating medium to large spaces.

Crafted from high-quality cast iron, the Vermont Casting LHER20 offers both durability and aesthetic appeal. It comes in several attractive finishes, including matte black and classic enamel colors, allowing homeowners to choose a look that complements their decor. The traditional styling features large glass doors that provide a captivating view of the fire, creating a cozy atmosphere and enhancing the overall experience of wood-burning.

Another notable characteristic is its user-friendly operation. The LHER20 features a simple damper control system, allowing users to easily adjust airflow for controlling the burn rate. This ensures a steady and consistent heat output while allowing users to tailor the stove’s performance to their preferences.

In terms of size, the LHER20 is compact yet powerful, making it suitable for various spaces, including cabins, homes, or even larger open-plan areas. The stove's efficient heat delivery helps create a comfortable environment during the cold months, proving its worth as a reliable heating solution.

Overall, the Vermont Casting LHER20 is an exemplary wood stove that combines tradition with modern technology. Its outstanding features, environmental responsibility, and aesthetic appeal make it a sought-after choice for those seeking to embrace the warmth and charm of wood-burning stoves in their homes. Whether for aesthetics, efficiency, or performance, the LHER20 stands as a testament to Vermont Casting's commitment to quality.
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