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USSC

INTRODUCTION

Thank You for your purchase of a U.S. Stove Wood/Coal 

Burning Gravity Style (Up-Flow) Furnace. Your decision to 

buy our Clayton Furnace was undoubtedly reached af

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ter much careful thought and consideration. We are very 

proud  you  chose  this  furnace  and  trust  you  will  receive 

the comfort and economy that others realize when heat

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ing with a U.S. Stove product.
Your dealer is important in your experience with the fur

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nace  not  only  with  the  purchase,  but  for  recommen

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dations  for  professional  installation  in  your  home.  The 

qualified  professional  installer  has  been  expertly  trained 

in  solid-fuel  furnace  installation  to  assure  the  safety  and 

comfort for your family while saving you money. Trust your 

experienced installer. He is a specialist in this field. 

IMPORTANT

Before installing and using your Clayton furnace, please 

read the following pages thoroughly and carefully. If you 

follow the instructions, your Clayton furnace will give you 

safe and more dependable service for years to come.

•  First step: Check your local codes. This installation must 

comply with their rulings.

•  Do Not install this furnace in a mobile home or trailer
•  Always have a smoke or ionization detector and a CO 

detector installed in your home.

•  To  prevent  injury  or  damage,  do  not  allow  anyone 

who is unfamiliar with the furnace to operate it.

•  This furnace 

must be

 installed ONLY in the prescribed 

manner  shown  in  illustrations  1,  2,  or  3  under  the 

In-

stallation  Examples

  in  this  manual.  It  is 

NEVER  to  be 

installed as a counter-flow or down-draft furnace

, or 

in any manner wherein the heated air is directed in a 

downward flow into the home or toward to an existing 

central furnace.

• 

NEVER INSTALL

 outside the home.

•  Spend adequate time with your furnace to become 

well  acquainted  with  the  different  settings  and  how 

each will affect its burning patterns. It is impossible to 

state just how each setting will affect your furnace be

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cause of the variations in each installation.

DISCLAIMER NOTICE

The BTU ranges and heating capacity specifications are 

provided as a guide and in no way guarantee the output 

or  capacity  of  this  unit.  The  actual  BTU  output  depends 

on the type of fuel being burned and its conditions, the 

thermostat setting, the draft adjustment and the chimney 

to  which  the  unit  is  attached.  The  actual  area  that  this 

unit will heat depends on factors such as the conditions 

of the building, heat loss, type of construction, amount of 

insulation, type of air movement, the location of the unit 

and more importantly the duct work and return air facility.

Warning:

Do not alter this appliance in any way other than speci

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fied in these instructions. Doing so may void your warranty.

LOCATING YOUR FURNACE

The furnace is to be installed maintaining the clearances 

specified in the following illustrations.

CLEARANCES

REDUCED CLEARANCES

NFPA guidelines and most codes permit reduced clear

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ances  to  combustible  walls  and  ceilings  if  adequate 

protection  is  added.  A  common  mistake  is  to  assume 

that  sheet  metal,  masonry,  or  millboard  placed  directly 

against a wall protects it. Materials installed in this man

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ner actually provides very little protection. These materials 

are good heat conductors, so they will be almost as hot 

on their back side as they are on the exposed side. There

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fore, the combustible wall behind is still a fire hazard.
A wall can be kept cool using these items but only if they 

are mounted and spaced out from the wall by an inch 

or two to allow free air circulation behind the protective 

panel. The protective panel should also have a gap be

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tween the floor and ceiling.
Three rules to follow when constructing wall protectors:

1.  Non-combustibility of all materials including mount

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ing and supporting.

2.  A well ventilated air space between protector and wall.
3.  Sufficient strength and rigidity so that the protector 

and air space will be durable.

PROTECTIVE COVERING 

AND ALL SUPPORTS MUST 

BE NON-COMBUSTIBLE

CONSTRUCTING 

NON-COMBUSTIBLE 

WALLS

2” FROM FLOOR

2” FROM CEILING

1” AIR SPACE

Do not place the furnace directly on a combustible floor. 

If you are placing it on a combustible floor, an approved 

fire  retardant  material,  equivalent  to  3/8”  UL  Listed  mill

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board, should be placed under the unit. The material must 

extend at least 16 inches beyond the front of the unit and 

8 inches on either side of the fuel loading door opening. 

It  must  also  extend  underneath  the  chimney  connector 

and to each side of the connector by at least 2 inches.

22”

12”

20”

15”

COMBUSTIBLE WALL

COMBUSTIBLE WALL

FLUE

(TOP VIEW)

MINIMUM CLEARANCES 

TO A COMBUSTIBLE 

WALL

CAUTION:

DO NOT store

combustible or

flammable materials or 

liquids near the

furnace.

Summary of Contents for Clayton 1602M

Page 1: ...80 www usstove com SAFETY NOTICE If this furnace is not properly installed a house fire may result For your safety follow these installation instructions Contact local building or fire officials about...

Page 2: ...etting the draft adjustment and the chimney to which the unit is attached The actual area that this unit will heat depends on factors such as the conditions of the building heat loss type of construct...

Page 3: ...d slowly it produces tar and other organic vapors which combine with expelled moisture to form creosote The creosote vapors condense in the rela tively cool chimney flue of a slow burning fire As a re...

Page 4: ...m of 1 4 to the foot At no time should the pipe turn downward toward the chimney or run horizontal 2 There should be no more than two 90 degree elbows 3 The connector pipe should never be longer than...

Page 5: ...order to insure proper furnace performance Failure to provide return air ducts of the specified size will void your warranty A filter should be installed in the cold air return Furnace fil ters shoul...

Page 6: ...ting brackets on the left side of the door frames as illustrated The slots in the brack ets and latches are for door seal adjustment Make the proper adjustments then tighten the nuts The door s gas ke...

Page 7: ...the illustration Attach the shorter con duit assembly to the bottom of the box securing it with the nut on the fitting 5 Plug the wires onto the snap disc see wiring sche matic and then attach the box...

Page 8: ...CK REPLACEMENT If baffle replacement is necessary slide the baffle out until you can access the nuts thru the flue outlet Once the nuts have been removed slide the baffle off the rod and thru the open...

Page 9: ...oal in on the shaker grates It should come up to about half of the first firebrick level Place crumpled paper over the coal and crisscross a couple handfuls of dry kindling wood 3 4 in thickness on to...

Page 10: ...a fire extinguisher into the firebox After chimney fire is over completely inspect system for damage before further use NEVERthrowwateronthefireoratthefurnace asrapidly expanding steam could result in...

Page 11: ...ap is not too close to the top of the chimney D Check chimney draft make sure chimney flue pipe is clean and chimney is of adequate height E Make sure you re not suffocating the fire with exces sive a...

Page 12: ...12 USSC PARTS DIAGRAM 11 12 13 16 15 17 14 7 10 5 2 3 6 30 29 4 3 2 1 35 3 8 9 24 26 25 27 17 16 3 19 18 20 28 34 21 22 32 33 23 31...

Page 13: ...ide x 9 tall x 1 1 4 thick 891414 3 18 Slide Baffle 24231 1 19 Baffle Rod 86603 1 20 Lock Nut 1 2 13 83444 2 21 Gasket Flue Collar 88032 1 22 Flue Collar 40246 1 23 Flue Collar Ring 22761 1 24 Smoke C...

Page 14: ...for your home U S Stove offers the model UFB908 as an option and can be purchased from your local dealer The UFB908 utilizes a standard 16 x 20 filter that can be purchased from your local dealer or a...

Page 15: ...al The installation is now ready to be plumbed to your exist ing hot water system Choose one of the three methods described in the Hot Water Coil instructions 6 Remove knockouts from the access panel...

Page 16: ...method with the highest portion of your fire bed in the center of the firebox The first flames will be long and generally orange or yellow and produce quite a bit of smoke As the gases burn off the fl...

Page 17: ...w minutes until the volatile gases have burned off It is not necessary to shake down the ashes each time you refuel the furnace Experience will be your best teacher BULLETIN RC454 A GUIDE TO BURNING C...

Page 18: ...18 USSC NOTES...

Page 19: ...19 USSC NOTES...

Page 20: ...future reference When placing an order or for warranty claims please provide the following information found on the Certification Plate located below the ash door PART NUMBER PART DESCRIPTION MODEL NU...

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