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5

4. Chimney

4.1 Types of Chimneys

The  chimney  is  one  of  the  most
important,  yet  most  neglected  and
misunderstood portion of any solid
fuel burning installation. We do not
recommend  that  the  stove  be  con-
nected  to  a  chimney  with  other
heating devices.

THE  STOVE  MUST  BE  CON-
NECTED  TO  ITS  OWN  TILE-
LINED  FLUE.  A  MINIMUM  FLUE
SIZE  OF  8"  X  8"  IS  NECESSARY
FOR  PROPER  OPERATION  AND
APPROVED FOR ALL FUELS.

UNDER  NO  CIRCUMSTA N C E S
SHOULD  A  MANUAL  FLUE
DAMPER BE INSTALLED IN THE
SMOKE  PIPE  BETWEEN  STOVE
AND CHIMNEY!

No damper, heat saver, or automat-
ic  vent  damper  device  should  be
installed in or on the smoke pipe.

N O   O T H E R   A P P L I A N C E S
SHOULD  BE  VENTED  TO  THIS
FLUE!

CAUTION: THE CHIMNEY MUST
BE  A  CLASS  “A”  CHIMNEY  IN
GOOD OPERATION CONDITION.

NOTE: THE USE OF ALUMINUM
TYPE “B” GAS VENT FOR SOLID
FUELS IS UNSAFE AND PROHIB-
ITED  BY  THE  NATIONAL  FIRE
PROTECTION 

ASSOCIAT I O N

CODE.

There  are  three  types  of  class  “A”
chimneys:

A. Masonry  with  tile  liner  to
include  brick  or  stone.  It  must  be
supported  on  grade  level  founda-
tion.

B. Insulated  Class  “A”  manufac-
tured chimney, listed or certified by
a national test agency.

C. Triple  Wall  Metal  Class  “A”
chimney,  listed  or  certified  by  a
national test agency.

If  your  masonry  chimney  has  not
been  used  for  some  time,  have  it
inspected  by  a  qualified  person
(building inspector,  fire department
personnel, etc.). If a listed or certi-
fied manufactured chimney is to be
used, make certain it is installed in
accordance with the manufacturer’s
instructions  and  all  local  and  state
codes.  See  Figure  No.  1  of
Manufactured Chimney Installations
and  Figure  No.  2  of  masonry
Chimney  (note  roof  clearance)  in
accordance with NFPA 211.

4.2 Common Chimney Pro b l e m s

In order to have a proper operating
solid fuel heating system, the chim-
ney  must  be  capable  of  providing
the draft required.

The minimum required draft is .06
inches  W.C.  (water  column).  This
must  be  measured  using  a  draft
gauge.

If  the  chimney  cannot  supply  this
constant  draft,  the  unit  will  not
operate properly.

In  some  installations,  a  barometric
draft  regulator  may  be  used  and
properly adjusted to compensate for
excessive draft.

IMPORTANT!

Whenever  you  measure  the  draft,
the stove must be operating and suf-
ficient  time  given  for  the  chimney
and stove to warm up. This should
take a minimum of thirty minutes.

The  draft  reading  is  taken  18"  up
from  the  center  of  the  stove  flue
outlet in the smoke pipe.

REASONS  for  insufficient  draft
readings:

A. Leaky Chimney - Air leaking in
a round  a  loose  fitting  clean-out
door,  flue  pipes  not  tight  at  the
joints,  improper  plug  openings  or
defective masonry.

B. Chimney  Improper  Height -
Chimney  does  not  extend  through
the roof to a sufficient height to pro-
mote  sufficient  draft  or  causes  a
down  drafting  condition  to  take
place. (See Figure No. 3)

C. Obstructions  in  the  chimney.
Check  prior  to  using  by  holding  a
mirror  in  chimney  clean-out  door.
This will give a view of the chimney.

D. Trees  or  Other  Topographical
Barriers -  Impeding  the  chimneys
operation  or  causing  a  down  draft
condition to exist. This can also be
caused by adjacent buildings or the
roof of the same structure where the
chimney  is  not  high  enough.  (See
Figure No. 3)

Figure 2

Figure 1

Summary of Contents for SF-150 SF-250

Page 1: ...stallation and Operator s Manual SF 150 SF 250 KEEP THESE INSTRUCTIONS Built to a Standard Not a Price 2003 CAUTION Read Warnings and Safety Considerations Recommendations for safe installation operat...

Page 2: ...sources on wood heating which you might like to purchase for your home library These include The Woodburning Encyclopedia by Jay W Shelton Wood Heat by John Vivian and The Complete Book of Heating Wi...

Page 3: ...at To Do When You Have A Problem 4 4 Chimney Details 5 CREOSOTE AND SOOT 5 1 General And Specific Creosote Maintenance Warnings 6 ELECTRICAL 6 1 Electrical Warnings 7 FUEL 7 1 Firewood and Coal Fuel I...

Page 4: ...enheit It is the owner s responsibility to fol low these recommendations This stove consumes air when it is burning It is advisable that a win dow in the vicinity be opened slight ly while stove is bu...

Page 5: ...4 3 Assembly Fasten blower to rear of stove by sliding blower into slots provided Heat Collector Diagram Firebrick Diagram SF 150 SF 250...

Page 6: ...all local and state codes See Figure No 1 of Manufactured Chimney Installations and Figure No 2 of masonry Chimney note roof clearance in accordance with NFPA 211 4 2 Common Chimney Problems In order...

Page 7: ...r to the room Your home may be so airtight that not enough oxygen is reaching the fire 6 REMEMBER open the draft controls and crack the fire door slightly before recharging the fire chamber or checkin...

Page 8: ...s on the interior sur face of the chimney and stove pipe subsequently reducing draft A SERIOUS FIRE MAY BE IGNITED IF A SUFFICIENT CREOSOTE BUILDUP IS PERMITTED Creosote condenses from the flue gases...

Page 9: ...h of its heat value in boiling off this moisture It is difficult to ignite and is sometimes hard to keep burn ing But its major evil is creosote as will be discussed in the next section Seasoning is e...

Page 10: ...Grates are removable without tools B Burns Three sizes of Anthracite You can burn pea nut or stove coal with these stoves C Exterior Shaker Lever For greater safety from getting burned and greater co...

Page 11: ...Make final adjustments to bring the stove into a level position by adjusting feet as required Most Harman stoves are equipped with adjustable feet which are adjusted simply by turning them They are 4...

Page 12: ...eep a professional chimney sweep in mind if you have access to one Steel brushes are the safest for cleaning metal surfaces Salt solu tions and some chemicals may dam age metal surfaces Do not overfir...

Page 13: ...T ONCE AND THEN OPEN THE DOOR AS THIS WILL CAUSE AN EXPLO SION OF THE UNBURNED GASES IN THE FIREBOX Close and open the draft controls one at a time to the desired setting This setting should normally...

Page 14: ...ature to stabilize 11 7 Secondary Air The two draft controls on the top door are used to allow secondary air to pass over the fire when burning coal This adds oxygen to the unburned gases primarily me...

Page 15: ...ode stainless and masonry chimneys and even terra cotta chimney liners and brick in nearby buildings Coal with high sul fur content will destroy chimneys especially fast if soot sits in the flue for e...

Page 16: ...circulate automatically through the system a Shut off the hot water heater and the old water supply to it Drain the tank completely b Remove the temp press relief valve and discard Install a short 3 4...

Page 17: ...e the drain valve at the bottom of the tank Install a short 3 4 nipple and tee and re install the drain valve to the tee 4 d Install a circulating pump 6 as shown Run 3 4 copper tubing from the circul...

Page 18: ...17...

Page 19: ...VE PARTS REPAIR AND OR REPLACEMENT AT HARMAN STOVE COMPANY S OPTION AND EXCLUDES ANY INCIDENTAL AND CONSEQUENTIAL DAMAGES CONNECTED THEREWITH WARRANTY EXCLUSIONS Failure due but not limited to fire li...

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