FMI UM36, UM42, VUM36, VUM42, VUM50 Owner's Manual

PFS

US

UNVENTED (VENT-FREE)

UNIVERSAL FIREBOX

OWNER’S OPERATION AND

INSTALLATION MANUAL

®

INDOOR VENT FREE (V)UM(36,42,50) SERIES

INDOOR/OUTDOOR VENT FREE (V)QM(36,42,50) SERIES

MASONRY FIREBOX WITH INSULATION

WARNING: If the information in this manual is not

followed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.

— Do not store or use gasoline or other ammable

— WHAT TO DO IF YOU SMELL GAS

— Installation and service must be performed by a quali-

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

vapors and liquids in the vicinity of this or any other
appliance.

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any
phone in your building.

• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the re
department.

ed installer, service agency or the gas supplier.

For more information, visit www.fmiproducts.com

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 qualied installer,
service agency or the gas supplier.

WARNING: Carefully review the instructions sup­plied with the decorative type unvented room heater for
the minimum replace size requirement.

DO NOT INSTALL THE APPLIANCE IN THIS FIREBOX,
UNLESS THIS FIREBOX MEETS THE MINIMUM DIMEN-

SIONS REQUIRED FOR THE INSTALLATION.

WARNING: FOR USE ONLY WITH A LISTED, GAS­FIRED UNVENTED DECORATIVE ROOM HEATER NOT

TO EXCEED 40,000 BTU/H.

DO NOT BUILD A WOOD FIRE.

TABLE OF CONTENTS

Safety .................................................................. 2

Local Codes......................................................... 4

Product Features ................................................. 4

Locating Firebox .................................................. 4

Product Specications ......................................... 5

Air For Combustion and Ventilation ..................... 8

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

This rebox has been tested
under Z21.91b-2004 for use
with approved ANSI Z21.11.2
decorative type unvented room
heater.

Installation ......................................................... 10

Firebrick Wall Installation ................................... 14

Gas Line Installation .......................................... 16

Technical Service............................................... 17

Replacement Parts ............................................ 17

Parts .................................................................. 18

Warranty ..............................................Back Cover

SAFETY

IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op­erate or service this replace.
Improper use of this replace
can cause serious injury or
death from burns, re, explo­sion, electrical shock and carbon
monoxide poisoning.

DANGER: Carbon monoxide

poisoning may lead to death!

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122274-01G2

SAFETY

Continued

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

WARNING: Do not allow fans

to blow directly into the rebox.
Avoid any drafts that alter burner
ame patterns. Ceiling fans can
create drafts that alter burner
ame patterns. Altered burner
patterns can cause sooting.

WARNING: Do not use a blow­er insert, heat exchanger insert
or other accessory not approved
for use with this rebox.

Due to high temperatures, the
appliance should be located out
of trafc and away from furniture
and draperies.

Do not place clothing or other
ammable material on or near
the appliance. Never place any
objects in the rebox or on
logs.

Firebox front and screen be­comes very hot when running
rebox. Keep children and adults

away from hot surfaces to avoid

burns or clothing ignition. Fire­box will remain hot for a time
after shutdown. Allow surfaces
to cool before touching.

Carefully supervise young chil-

dren when they are in the room

with rebox.

Keep the replace area clear and
free from combustible materials,
gasoline, and other ammable
vapors and liquids.

122274-01G 3

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You must operate this replace
with the provided fireplace
screen and hood in place.
Make sure these parts are in
place and screens are closed
before running installed gas
log heater. Replace hood with

FMI PRODUCTS, LLC model

109511-01 50", 109511-02 42",
or 109511-03 36" only. This hood
has been designed to keep the
operation of your replace safe
and efcient.

1. Do not use this rebox as a wood burning
replace. 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. Use only the provided hood. See Parts,
page 30.

4. Vent-free gas log heaters installed in these

reboxes require fresh air ventilation to

run properly. See Air for Combustion and
Ventilation, page 8.

5. Do not run vent-free heaters installed in

these reboxes

• where ammable liquids or vapors are

used or stored

• under dusty conditions

6. Do not use this rebox to cook food or

burn paper or other objects.

7. Turn unit off and let cool before servicing.

Only a qualied service person should
service and repair rebox.

8. Operating vent-free heaters installed in

these reboxes above elevations of 4,500

feet could cause pilot outage.

9. Do not use the rebox if it has been
under water.

10. Before using furniture polish, wax, carpet

cleaner or similar products, turn heater
off. If heated, the vapors from these prod-

ucts may create a white powder residue
within burner box or on adjacent walls

and furniture.

11. Provide adequate clearances around air

openings.

LOCAL CODES

Install and use rebox 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

the National 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-fired supplemental room heaters
shall provide to each purchaser a copy of
527 CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for
bedroom and bathroom installation in

the Commonwealth of Massachusetts.

PRODUCT FEATURES

OPERATION

This rebox is designed for use with approved

ANSI Z21.11.2 decorative type unvented room
heaters. (Physical size limitations apply. Refer

to minimum rebox requirements supplied
with log heater.) It requires no outside vent-

ing or chimney making installation easy and
inexpensive.

LOCATING FIREBOX

PLANNING

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

1. Where rebox will be located. Allow for
wall and ceiling clearances (see Installa-

tion Clearances, page 11).

2. Everything needed to complete installation.

3. These models CANNOT be installed in
a bedroom unless maximum Btu rating
of installed vent-free log set is less than
10,000 Btu/hr.

4. Proper air for combustion and ventilation
(page 8).

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122274-01G4

36" MODELS

PRODUCT SPECIFICATIONS

54

30 1/2"

11

1

/2"

30"

7

29"

22"

18

3

13

/8"

19

/16"

(Ref.)

7

4

/8"

3

3

/4"

1

/8"

3

34

/4"

36" HEARTH

5

/16"

1

50"

5

/16"

36

7"

7

/8"

36"

1

45

/8"

7

/16"

9

5

/16"

3

3

7

/8"

1

/8"

11

Figure 1 - 36" Models (V)UM36 and (V)QM36 Series

122274-01G 5

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42" MODELS

3

/8"

32

PRODUCT SPECIFICATIONS

Continued

5

30

/16"

25"

22

1

/2"

23

(Ref.)

13

/16"

54 1/2"

11

3

3

/4"

1

/8"

30"

7

7"

7

/8"

42"

1

/8"

51

4 7/8"

36

50"

5

/16"

7

9

/16"

5

3

/16"

3

/4"

40

42" HEARTH

3

8

/4"

13"

5

/16"

1

Figure 2 - 42" Models (V)UM42 and (V)QM42 Series

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122274-01G6

50" MODELS

3

32

/8"

3

/4"

3

PRODUCT SPECIFICATIONS

Continued

5

38

/16"

7

/8"

4

50" HEARTH

40

33"

1

/2"

22

13

/16"

23

(Ref.)

3

/4"

5

/16"

1

1

11

/8"

1

/2"

54

30"

50"

365/16"

7

7

7

/8"

7"

50"

1

59

/8"

/16"

9

5

3

/16"

3

8

/4"

13"

Figure 3 - 50" Models (V)UM50 AND (V)QM50 Series

122274-01G 7

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AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall

not be installed in a room or space
unless the required volume of in­door combustion air is provided
by the method described in the

National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International
Fuel Gas Code, or applicable lo-

cal codes. Read the following in­structions to insure proper fresh
air for this and other fuel-burning
appliances in your home.

Today’s homes are built more energy efcient
than ever. New materials, increased insulation
and new construction methods help reduce
heat loss in homes. Home owners weather
strip and caulk around windows and doors to
keep the cold air out and the warm air in. Dur­ing heating months, home owners want their

homes as airtight as possible.
While it is good to make your home energy

efcient, your home ne eds to breathe. Fresh

air must enter your home. All fuel-burning ap­pliances need fresh air for proper combustion
and ventilation.

Exhaust fans, replaces, clothes dryers and
fuel burning appliances draw air from the house
to operate. You must provide adequate fresh
air for these appliances. This will insure proper

venting of vented fuel-burning appliances.

PROVIDING ADEQUATE
VENTILATION

The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation.

All spaces in homes fall into one of the three

following ventilation classications:

1. Unusually Tight Construction

2. Unconned Space

3. Conned Space
The information on pages 8 through 10 will help

you classify your space and provide adequate

ventilation.

Unusually Tight Construction

The air that leaks around doors and windows

may provide enough fresh air for combustion
and ventilation. However, in buildings of un­usually tight construction, you must provide
additional fresh air.

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Unusually tight construction is dened as

construction where:

a. walls and ceilings exposed to the out-

side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10
less with openings gasketed or sealed

and

b. weather stripping has been added on

openable windows and doors and

c. caulking or sealants are applied to

areas such as joints around window
and door frames, between sole plates
and oors, between wall-ceiling joints,
between wall panels, at penetrations
for plumbing, electrical and gas lines
and at other openings.

If your home meets all of the three criteria

above, you must provide additional fresh
air. See Ventilation Air From Outdoors,
page 10.

If your home does not meet all of the three

criteria above, proceed to Determining
Fresh-Air Flow For Firebox Location.

Conned and Unconned Space

The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 denes a conned space as a space

whose volume is less than 50 cubic feet per

1,000 Btu per hour (4.8 m3 per kw) of the ag­gregate input rating of all appliances installed

in that space and an unconned space as a
space whose volume is not less than 50 cubic

feet per 1,000 Btu per hour (4.8 m3 per kw)
of the aggregate input rating of all appliances
installed in that space. Rooms communicating

directly with the space in which the appliances

are installed*, through openings not furnished

with doors, are considered a part of the un­conned space.

* Adjoining rooms are communicating only if

there are doorless passageways or ventilation
grills between them.

-11

kg per pa-sec-m2) or

DETERMINING FRESH-AIR FLOW
FOR FIREBOX LOCATION

Determining if You Have a Conned or
Unconned Space

Use this work sheet to determine if you have
a conned or unconned space.

Space: Includes the room in which you will
install heater plus any adjoining rooms with
doorless passageways or ventilation grills
between the rooms.

122274-01G8