FMI VFB36NC1 User Manual
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UNVENTED (VENT-FREE)UNIVERSAL FIREBOX OWNER’S OPERATION AND INSTALLATION MANUAL

PFS ®

US

Non-CirculatingModels

V32S, VFB32NC, V36S, V36SH, VFB36NC1, V42S, V42SH AND VFB42NC1

Circulating Models

V32, V36, V42, CUVF36C, VFB32C, VFB36C1, VFB42C1, V36H and V42H

Outside Air Models

V32A, V32AS, VFB32AC, VFB32ANC, V36A, V36AS, V36ASH, V36AH, VFB36AC, VFB36ANC, V42A, V42AS, V42ASH, V42AH, VFB42AC, VFB42ANC

WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

For use only with a listed gas-firedunvented decorative room heater Not to exceed 40,000

Btu/Hr. Do not build a wood fire.

Carefully review the instructions supplied with the decorative type unvented room heater for the minimum fireplace size requirement.

Do not install an appliance in this firebox unless this firebox meets the minimum dimensions required for the installation.

This firebox has been tested and approved under ANSI Z21.91 for use with any ANSI Z21.11.2 approved gas logs.

INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.

For more information, visit www.fmiproducts.com

Table of Contents

Safety...................................................................

2

Installation............................................................

9

Local Codes.........................................................

3

Replacement Parts.............................................

18

Product Features..................................................

4

Technical Service...............................................

18

Locating Firebox...................................................

4

Accessories........................................................

18

Product Specifications..........................................

5

Parts...................................................................

20

Air For Combustion and Ventilation......................

7

Warranty...............................................

Back Cover

Safety

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency or the gas supplier.

This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where not prohibited by local codes.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

WARNING: This product contains and/or generates chemicals known to the state of California to cause cancer or birth defects or other reproductive harm.

IMPORTANT: Read this owner’s manualcarefullyandcompletely before trying to assemble, operate or service this heater. Improper use of this fireplace can cause serious injury or death from burns, fire, explosion,electricalshockandcarbon monoxide poisoning.

WARNING: Any change to this firebox or its controls can be dangerous.

WARNING: Do not allow fans to blow directly into the firebox. Avoidanydraftsthatalterburner flame patterns. Ceiling fans can create drafts that alter burner flame patterns. Altered burner patterns can cause sooting.

WARNING:Donotuseablower insert, heat exchanger insert orotheraccessorynotapproved for use with this firebox.

Do not place clothing or other flammable material on or near the appliance. Never place any objects in the firebox or on logs.

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Safety

Continued

Fireboxfrontandscreenbecome very hot when running heater.

Keep children and adults away from hot surface to avoid burns or clothing ignition. Firebox will remain hot for a time after shutdown.Allowsurfacetocool before touching.

Carefully supervise young children when they are in the room with firebox.

You must operate this fireplace with the provided fireplace screen, hood if provided, in place. Make sure these parts are in place and screens are closed before running firebox. The supplied hood may not be replacedwithahoodwhichmay be provided with a log heater.

Keepthefireplaceareaclearand freefromcombustiblematerials, gasoline and other flammable vapors and liquids.

1.Do not use this firebox as a wood-burningfireplace. Use only decorative unvented room heaters (log sets).

2.Do not add extra logs or ornaments such as pine cones, vermiculite or rock wool. Using these added items can cause sooting.

3.Do not use blower accessory with model VFB32NC Series. Use only the provided hood or appropriate hood accessory. See

Accessories on page 18.

4.Vent-freegas log heaters installed in these fireboxes require fresh air ventilation to run properly. SeeAir for Combustion and Ventilation, page 7.

5.Do not run firebox

where flammable liquids or vapors are used or stored

under dusty conditions

6.Do not use this firebox to cook food or burn paper or other objects.

7.Turn firebox off and let cool before servicing. Only a qualified service person should service and repair firebox.

8.Operating firebox above elevations of

4,500 feet could cause pilot outage.

9.Do not use the firebox if it has been under water due to the shock hazard that could result with the blower accessary (if installed) in place.

Local Codes

Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code, ANSI Z223.1/NFPA 54*. Firebox must be electrically grounded in accordance with theNational Electrical Code, ANSI/NFPA70

(latest edition). *Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts.

Sellers of unvented propane or natural gas-firedsupplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit.

Vent-freegas products are prohibited for bedroom and bathroom installation in the

Commonwealth of Massachusetts.

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3

Product Features

Operation

This firebox is designed for use with approved

ANSI Z21.11.2 decorative type unvented room heaters. (Physical size limitations apply. Refer to minimum firebox requirements supplied with log heater.) It requires no outside venting or chimney making installation easy and inexpensive. When used without the blower, the firebox requires no electricity making it ideal for emergency backup heat.

Blower Accessory

The circulating models will accept either a rotary type fan (model BK) or the triple radial fan blower system (model BK3) accessories. The blower circulates heated air from the firebox into the room. Use of blower is optional.

Refractory brick liner

Your firebox may feature a concrete refractory brick liner. As with all concrete liners, this liner may develop slight cracks when exposed to heat. These cracks will not affect the performance of the fireplace or vent-freegas logs.

OUTSIDE AIR KIT ACCESSORY

Fireboxes that include “A” in their model number can accept any AK4 series outside air kit accessory.

The optional AK4 air kit provides additional outdoor air to improve burner efficiency and reduce build-upof condensation in the living space. Follow the instructions included with the air kit.

Locating Firebox

Planning

Plan where you will install the firebox.This will save time and money later when you install the firebox. Before installation, consider the following:

1.Where the firebox will be located.Allow for wall and ceiling clearances (see Installation Clearances, page 10).

2.Everything needed to complete installation.

3.These models CANNOT be installed in a bedroom unless the maximum BTU rating of the installed vent-freelog set is less than 10,000 Btu/Hr.

4.Proper air for combustion and ventilation (page 7).

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Product Specifications

32" Models

8 1/8"

 

10 1/2"

 

 

8 1/8"

 

 

 

 

29/16"

37/16"

 

 

815/16"

 

 

19 1/2"

 

2 13/16"

16 11/16"

 

 

12 1/4"

 

8 5/8"

 

 

 

 

Built-In

 

 

Side

 

 

Nailing

 

 

Flanges

Square

19/16"

 

 

 

Gas Line

 

 

Access

 

81/8"

Holes

 

29/16"

Electrical

6"

21/4"

Access Hole

815/16"

 

 

93/4"

 

Outside Air Kit Location (Optional)

221/2"

4"

5/8"

251/8"

291/2"347/16"

363/8"

Standoffs

41/4"

361/2"

 

31/2"

 

321/4"

187/16"

1415/16"

163/4"

291/2"

 

 

33/8"

 

65/16"

Front View

Right Side View

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5

PRODUCT SPECIFICATIONS

Continued

36" and 42" Models

Note: If only one dimension is shown, the dimension is the same for both 36" and 42" models.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outside Air

 

 

 

 

 

Firebox Top View

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kit Location

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Optional)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Right Side

View

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