Martin Industries BW4245A User manual

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42 INCH BUILT.IN WOOD BURNING
FIREPLACE AND CHIMNEY
MODEL BW4245A
Look for the Underwriters' Laboratories, lnc. Listing Mark on our Fireplaces.
Pat. No. 3724443
PLEASE NOTICE:
I NSTALLATION INSTRUCTIONS
This fireplace is not approved by Underwriters' Laboratories for mobile home
installation.
These instructions should be read in their entirety before beginning any part of the
installation. The step by step portions of these instructions should be kept available
f or easy ref erence th roughout the installation process to which they apply.
GENERAL INFORMATION:
The Martin Fireplace is a carefully engineered, factory built fireplace which can be safely installed
with the normal points of contact on the fireplace at zero clearance to wood or other combustibles. The
fireplace requires no special foundation or footing and is designed to be complete with its own chimney,
flashing, and chimney termination. When installing the fireplace, only parts manufactured by Martin
lndustries and Iisted for use with the Martin Model BW4245A should be used with the only exception belng
special roof flashings for use in unusual roof designs such as pitches above 12112. These flashings may be
purchased from a local sheet metal fabricator.
CODE INFORMATION:
You should refer to your local building code for local requirements
factory-built fireplaces. Martin f ireplaces are intended for installation and
No. 211 of the National Fire Protection Association.
Martin fireplaces have been either listed or approved by many local
fol I owi n g national I y recogn ized organ izations :
1. Underwriters' Laboratories, lnc. (File MH7603)'
2. lnternational Conference of Building Officials (Report No. 2767).
3. Building Officials and Code Administration (Report No. 73-74).
4. Southern Building Code Congress (Report No. 7208 73).
pertaining to the installation of
use according to Standard NFPA
building authorities and bY the

2" CLEARANCE
TO
COMBUSTIBLES
52 FT. MAX.
I2 FT, M IN.
STUDS MUST BE
INSTALLED
VERTICAL AT
FRONT
O..CLEARANCE
TO SPACERS
STARTER SECTION
O.lCLEARANCE TO
BACK SPACERS
;;r;!tI
O"CLEARANCE TO
SIDE SPACERS
HEARTH EXTENSION
OR LOCALLY APPROVED EQUIVALENT
O.'CLEARANCE TO
BASE SUPPORTS
FIG. I

t
CLEARANCES:
When installed according to these instructions. the fireolace may be set directly on combustible
flooring materials. lt is not advisable, however, to set the fireplace over shag carpet or other similar floor
coverings.
NOTE: Many insulating materials used to insulate buildings contain combustible materials.
lnsulation containing combustible materials should not be placed in contact with the
chimney or points on the fireplace that would not normally be contacted by framing
materials. Proper spacing between the fireplace and/or chimney and combustible materials
shou ld be maintained.
Combustible construction materials may be placed at zero clearance to points of normal contact such
as the spacers on the sides and rear of the fireplace and the spacers aiong the top of the front frame of the
fireplace (See Fig. 1).
Chimney sections require a minimum of 2 inches clearance to combustible materials. Firestop spacers
should be installed at each ceiling level to provide the proper spacing to combustible materials at the joist
level. A firestep spacer is not necessary at the roof level, but an ooening which will provide the minimum 2
inch clearance on all sides of the chimney must be provided. The dimensions given for the roof openings in
Fig. 2 will provide this clearance.
Combustible walls or items should not be placed within 36 inches of the side of the firebox opening
(See Fig. 1). The floor area should be protected as shown in Fig. 1.
72" x 6"
I HEADER
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FIG.2
ROOF OPEN!NGS
ROOF PITCH
ol12
1 12
2112
3t12
4112
5112
6112
7112
8112
9112
10112
11112
12112
MIN IMUM OPENINGS
9OO SERIES CHIMNEY
19 x 19
19 x l9-1/4
19 x 19-1/2
19x2O
19 x *112
19 x 21
19 x 21-112
19 x T2-114
19 x 23
19x24
19 x 25
19 x fr114
19x27
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IFI REPLACE INSTALLATION :
The fireplace may be installed in any location that will provide the necessary clearances. A location
that requires cutting the least number of ,oists and rafiers will simplify the installation and reduce the
installation cost. The fireplace may be elevated on a suitable platform if a raised hearth is clesirecl. since the
fireplace is normally placed near a load bearing wall and weighs no more than some large pieces of
furniture, additional supports in the foundation are not usually necessary. lf the fireplace is to be trimnred
with large stone or brick facing, be sure the foundation is adequate.
The fireplace may be positioned and then the necessary framing constructed around it or the franring
may be constructed and the fireplace pushed into the opening from behind. (See Fig. 3 for rhe suggested
fram ing method.)
lf a stone or brick facing is used, wall ties should be screwed to the face of the firepiace and placed in
the mortar loints of the facing to secure the facing to the fireplace. Be sure no cracks exist betlveen the face
of the fireplace and the decorative facing material. A crack in this location could be a fire hazard or impair
the proper draft of the fireplace. A metal strip should be placed under the front edge of the fireplace as
shown in Fig. 3 as an extra precaution should a crack ever develop between the hearth extension and the
metal face of the fireplace.
Facing materials should not be applied until all other parts of the i,lstallation have been completed.
once the location of the f ireclace has ceel ceter- i.ec. the
of the fireplace should be checkecj ,...ith a carcer,:er s;e,.s c^: ' -
legs of the fireplace to plumb the face of the fireplace,
'f 'r:ClaCe
:a?SSi-. should b,e set in place. The face
s- -^s c.', ?^ under the suoDort
INSTALLATION OF THE CHIMNEY:
lnstallation of the chimney may be begun after the fireplace has been set in position. To have better
access to the chimney, it should be installed before the framing is installed around the fireplace.
Proper chimney height is important in order to prevent wind turbulence, created by the roof or other
nearby structures, from interfering with the draft of the chimney and to minimize the possibility of sparks
that exit the chimney from falling back onto the roof. Figure 4 illustrates the basic rule for proper chimney
chimney height. This rule is, "The flue outlet should be a minimum of three (3) feet above the highest
point where the chimney penetrates the roof and a minimum of two (2) feet above all portions of the
building within ten (10) feer."
NOTE: Flue outlet should be fwo feet
obove oll poriions of the build-
ing wi?hin ten feet os shown by
these illustrotions.
FIG. 4

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Portions of th., Jhimnev that ai-e to pass through spaces used for living quarters or storage should be
enclosed ,ar avoiti )ars..Jrral c/:),rtaci ,vitl: and pcssibie Camage to the chimnev.
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:..} TP. L LATiON SEOU EITJCE :
tir.; ch,q.i'iev is to inciucie elbo.r.s tc offset th? chirnne}', refor tr: thg sllLlo\r instaliation sr.:ciiorr
th.;:e instructions before follo'.';ing the sleo: !..eic';v.
.:ut, anci franre r)penings thfor..rglratl ce irn,1S rrcj the rcof The insiiic dirrisl:si,-.rrs i,-:r'ti're i-roles
ceiiirrgs rfiust be i9 inches square. Befer to FrrUr€ 2 tor the hoie sizes to i;c usecj at the r-r:u{
of tlre proper
a l;r;ve is att ic
f iES 6;:r,.rl 7).
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- :-' -
"a,-^ :ta=.:- :^? ae iro !inl3ss lhe si,ace
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-: >t;ila.' tnto :''a ' .,a 3-i ?t Jt --. a ' '?t aaa .-at ;,rrass i'Ji,,,t-t L.;-lii :i-,i, 5,ia:) ilcr,S
i-.r: S':jf --:" S'-Cr-.'- 3: 'S:r 9C O:, i^:1-a:;ng Ci-ti'3: Of th.. firl:r ale r,V' ;o,ia-""'. it,: ti:.
': -: , J:::ar:,:'. I '? ,:l ei a i' Sterte r ::r,llid ',= : S.; :l: . ii-r lrle r',..-:{: ._: ,t-:
--e frr?1-llac? ai'rci enqaEe the snap lock3 on the top of tn,; r:eiriace.
lr;la j 1r.ra cl-. r.'r ney , ,clions by insef tino tlre male end of the flue or smallert .i,?mpte" prpe on t,)i) L1
ihe fiue starig. anri oressing dolvn r.:ntil the snap locks enqage. Next. place lhn D lle't :i:. LiLlct nr
inte:'mediate diarneter pipe directlr/ on top of the starter section and press Cow:r until the snap locks
cnqar:le Tharr, place the ir,rnale enrl 1)i thr iriiet air iluct or lrrqest diameter pipg on top of ttre inlet air
slat'tei' ano oress down r-rniii th-" sn:o ioci:s engaoe, Contirue this process, adding the chimney sections
o. IoD of e3ch other ur,t.l the chranngy 's above ine roof opening on all sides.
NOTE: T'r: ast sect on oJ :-: c-'r-1:, -sIJi:eC s-outd be either a 2' or 3'section so that the
:e as:Ope si.: o' ''r c -2aa .'. i. :ne c.l'rne\/ terminatiOn vJill telescope properly. Be sure the
S'aC Oa<: .': ;-::;:: --. SaCi- : Je Dipe SeCtiOn.
T-e c^ --e, ^-3V ce i?r-.€:.d ,...ith either a simuiated brick chlmney housing or a contemporary
'o-''la ierr-i.a: or cap Fo' scecific iaslaLiation instructions, re{er to the section of these instructions
a:tp CaC, €;9 1r9 6-i6nsr,, ter'l.llnation ithich you have chosen.
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4.
5
-FLOOR JOIST
,... ,,)
L FIRESTOP
SPACER
\-CHIMNE Y
SECTI ON
TNSTALLATTON OF FTRESTOP SPACER AT FLOOR ]:lyElg
FIG 6

OUTLET
AIR DUCT
INLET AIR DUCT
CEILING JOIST
FIRESTOP
SPACER
CHIMNEY
SECTION
MODEL 9I2 A STARTER SECTION
HEADER -
INSTALLATION OF FIRESTOP SPACER A? CEILING
FIG 7FIG. 8
INSTALLATION OF ELBOWS TO OFFSET THE CHIMNEY ON THE BW4245A FIREPLACE
GENERAL INFOBMATION:
As many as four elbows may be used to avoid obstructions that prevent the chimney from extendlng
vertically. The first elbow in an offset system may be installed directly on top of the fireplace or at any
level in the chimney. Elbows should not be used for the purpose of inclining the chimney more than 30
degrees from vertical. The Iength oi the inclined chimney should not exceed 6 feet unsupported, or 15 feet
if the chimney is supported at 6 foot intervals with some means of support such as metal support straps or a
firestop-sp acer. lf the inclined portion of the chimney must pass through a ceiling, a special firestop-spacer
is required. Figure 5 describes the firestop spaces available.
CLEARANCES:
A minimum of two inches clearance must be maintained between all elbows used on the Model
BW 4245A fireplace and combustible materials.
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OFFSET INSTALLATION SEOUENCE:
1. Determine the location and amount of offset required, then select the combinations of chimnev
sections and elbows required from the offset charts on Page 8 of this Manual.
2. lnstall the first elbow by placing the crimped ends of the flue and outlet air duct portions of the elbow
into the matching parts of the fireplace or chimney section. Push down until the outside or inlet air
duct of the elbow overlaps and the snaps lock the elbow onto the fireplace or chimney section.
3. lf the first elbow is installed on top of a chimney section rather than directly on top of the fireplace,
nail the elbow support straps tightly to a building frame member.
4. lnstall the sections of pipe that are required to be between the elbows until the proper number of
chimney sections have been installed or, if the offset will pass through a ceiling, until the point where
the offset will penetrate the ceiling can be determined.
5. lf the inclined portion of the chimney penetrates a ceiling or floor, layout the location of the holes in
the roist areas. The dimensions shown on Figure 5 may be used to frame the hole.
6. lnstall the firestop-spacer by inserting it into the framed hole and nailing it into place through the
flange around the perimeter of the hole.
7. lnstall the second elbow to return the run of the chimney to vertical.
8. Nail the support straps of the second elbow to a building frame member.
9. Continue installing the vertical portion of the chimney.

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I NSTAL LAT tON O F TH E 42O, 620, 440, or 640 CH tMN Ey HOUST Nc
GENERAL INFORMATION:
The Model 42o' 620' 44o, or 640 chimney housings are designed to be installed on several fireplace
models Therefore, a knockout ring inside the top of the chimney housing must be removed to increase the
hole diameter from i 1 inches to 12 inches before it can be installed on the BW4245A fireplace. This can be
done by gripping the rihq from the inside and rwisting back and forth at each of the small metal segments
that hold the ring in place until they break.
CHIMNEY HOUSING INSTALLATION SEOUENCE:
1. Unpack the chimney housing and identlfy all parts and fasteners.
2 Place the flashinq halves around the top sections of the chimney with the flashing halves overlapped so
that rain water wirr run off the rap joint. (See Fig. g.) rf you are using tn" i+o or 640 chimney
housing' the flashing extension should be used as shown in Fig. 10. lf the chimney housing is being
installed on a roof where the shingles have already been applied, the nails holding the shingles above
the hole in the roof should be removed and the flashing pushed back under the shingles. when the
installation of the chimney housing is complete, the shinqles should be nailed back in place.

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POINT B
Set the chimney housing on the roof.
Place a level alongide of the chimney so that the
lower corner of the level is even with the upper
edge of the chimney housing (Point B).
Scribe a line along the lower side of the level. This
line will rnatch the roof pitch.
The chimney should be cut along this line to use
the full height of the chimney. lf less than the full
height of the chimney housing is to be used, cut
parallel to this line.
FIG. II
3. Layout and cut the chimney housing to match the Slope of the roof using the method described in Fig.
11.
4. Lower the chimney housing over the flashing so that the cut edges of
into the flashing brackets thar are attached to the flashing (See
brackets included r'. iih tne .i40 anc 64C cnir,ney housing should
brackets at each end enc four alonc each side of the housing.
the
F ig.
be
chimney housing are inserted
10). The additional f lashing
placed so that there are two
5. lnsert the duct telescope do!.'n ttrough the hole in the chimney housing and into the corresponding
duct of the chimney section. Push do,.r,n on the duct telescope until the flanged end of the telescope
rests around the hole in the chimney housing. lt may be necessary to move the chimney housing some
in order to correctly align the ducts.
6. Place the outlet air shield (with outside flanges up) over the four vertical brackets, making sure the
brackets fit tight to the outside edges of the slots in the outlet air shield.
7' lnsert the flug lsls5gqpe into the hole in the outlet air shield and into the last section of the flue pipe.
Push down on the flue telescope until it enters the lasi section of the flue pipe 3" or more and so that
the flanged end of the telescope rests on the flange of the outlet air shield.
Place the rain cap (all four vertical support brackets must be inside cap) on the brack6ts, then push
downward until each bracket snaps into the slot in each corner of the rain cap. Be sure all brackets are
in the slots.
I' Pull the two halves of the flashing apart until they fit firmly inside the chimney housing. Make the
necessary adiustments to make sure the proper clearance exists on all sides of the chimney section
where it passes through the roof opening.
lt

[10 Secure the flashing to the roof by driving two of the special ails provided into the holes provided in
the horizontal leg of each of the flashing brackets. The nails should be driven through the fleshing and
into the roof structure. These nails should penetrate the blocking or rafters to hci.J t:',e chimney
housinq secu rely.
11. Caulk around the perimeter of the flashing and aloi"''q the edg;e of the shingle* that overtac
to avoid any possible leaks at this point.
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12. Make sure the chimney housing is vertlcel and drill or punch eight 1/8r'diarneter holes in the ch!r..er
housing to align with the holes in the flashing brackets
i3. Fasten tl^ie chi:-nneV irlr.isir:J t',r ths tiashing with the FiD. '1il i; I/26cretus i:i!"ovi(i#d.
'irt. Caulk arou:'ld the i.rase, r' th.- --- i^-:e y t.,, pie'./a;-ti ir:,i" :
SPEC Lri [- i]Ciljsl D E R AT lC li S :
:r iji l',:r
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flashing to
aC';isable tc cre,,/gnt i^,,at3r :r3.-- ::c-
construct a crickei aboVe
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INSTALLATION OF THE MODEL 985A ROUND TERMINATION CAP
GENERAL INFORMATION:
The proper chimney height as previously explained is important to assure proper draft and safety. The
round termination extends the flue outlet I inches above the top of the last section of chimney. This
should be kept in rnind when deterrnining the proper lreight fcr the .hirrlney. In addition, the chimney
should not be extended more than 9C inches above the supportinq roof structure without additianal
support. ln the case oI "A" treme type construction or othc'r steep pitch roofs that require rrrorethan 90
inches above the roof, a suppcrt shoulcj be attacheci to the chimney at the 90 inch level that is strong
enough to support a wind load of 3-1 /8 lbs for each inch thc chimney extends above g0 ii":ches.
ROUND TERMINATION INSTALLATION SEOUENCE:
1. Extend the regular chimney sections until the top of the chimney.is 9 inches belov..,the total flue
height desired. Do not snap the last section of inlet air duct or largest diameter pipe in place until Step
3 is completed.
12

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2.- Remare the shingl6 from around the chimney so that the flashing may be installed as shown in Figure
l2 with the upper part of the flashing under the shingles.
Set the flashing on the roof and scribe a line around the flashing as described in Figure 12. Then cut
the top off the flashing by cutting one-fourth inch below the scribed line. This should increase the
diameter of the flashing outlet sufficiently to allow the flashing to be placed over the chimney.
Snap the last section of inle: air duct in place and slide the flashing over the chimney. Ad.lust the
chimney to assure that the croper minimum clearances between the chimney and all combustible
materials at the roof lever are naintained. When the proper clearances are assured, the flashing should
be nailed securely in place r',i:r the eight lead head nailsprovioed. rSee Fig. 13 foran illustration of a
completed assembly anc Fig. 14 for identification of :ll round termination parts.)
Seal the crack bet,'. een the top of the flashing and the chimney with mastic. Leave some excess mastic
at this area to be used in.Step 6.
Place the siorm coiiar around the chimney. Then put the collar together like a belt in belt-loops. Slide
the end of :re collar under the two "loops" on the other end, with the loops facing up. overlap the
ends of the collar until it is tight against the chimney. Bend the end back over the loops to hold the
storm collar securely together. The excess end of the storm collar may be trimmed off.
NOTE: It is advisable to use pliers and wear gloves when performing Step 6 to minimize the danger
of cutting your hands on the edge of the storm collar.
7' Slide the storm collar down snugly against the flashing until the excess mastic left in Step 5 is forced
up into the crack betv''e€n the storm collar and the chimney. This should make the loint between the
flashing and the chimney water tight.
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TERMit\ATION
CAF
APPLY MASTIC
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STORM'
COLLAR
FLAS HIN G
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5.
6.
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8. Lower the base assembly of the round termi-
nation over the last section of chimney; then
punch or drill 3116" diameter holes in the
inlet air duct opposite the brackeis at the
bottom of the base assembly. Fasten the base
assembly in place by putting one of the 10-24
x 1 l2 bolts provided through the base
brackets and into the inlet air duct and
tighten these in place with the nuts provided.
Slide the duct telescope down into the base
assembly and telescope it into the oulet air
duct. The duct telescope should be pushed
down until the flanged end of the duct tele-
scope rests on the vertical flange around the
hole in the chimney base.
Slide the flue telescope down into the duct
telescope and telescope it into the flue. The
flue telescope should be puslred down until
the flanged end of the flue telescope and the
deflector rests on top of the brackets welded
in the end of the duct telescope.
9.
10.
11. Place the rain cap over the chimney base
assembly and fasten it in place by inserting
screws through the holes in the rain cap and
into the matching holes in the legs of the
chimney base.
FINAL CHECK
lnspect all parts of the fireplace, chimney, and chimney termination to assure that no parts have been
damaged or bent during installation, all parts have been installed properly, and all parts of the chimney fit.
IMPIORTANT:
To finish installation of screen, follow these special instructions.
1. Remove the polyethelene sheets from the screen halves.
2. Locate the four spring clips (2 on each sidel on the sides of the fireplace opening.
3. Let the screen hang down along-side these clips. Remore the clips and insert them into a stand of the
screen.
4. Re-insert the clips into the fireplace side. (A pair of needle-nose plierc are ideal for this job; however.
regular wire pliers can be used.l When closing the screen, these clips will.leep the screen from pulling
away from the sides.
_,,.-R^lx CA?
-- PROTECTIVE
GRILLE
DEFLECTOR
FLUE TELESCOPE
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PREPABATION OF BW4245A FOR ACCEPTANCE OF A GAS APPLIANCE
1. Remore the two screws holding the firebox right side, and remove the firebox right side.
2. Push out the plug in the bottom of the firebox right side.
3. Remove the three screws that hold the cover plates on the firebox wrap.
4. Discard the cover plate that does not have the 15/'16" hole in the center.
5. With a screwdriver or other suitable tool, push the loose Iiberglass insulation out of the tube that is
attached between the firebox wrap side and the jacket side.
6. Slide the 1 2" pipe for the gas appliance through the tube between the firebox wrap side and the
jacket side.
7. Slip the cover plate over the end of the pipe.
8. Fasten the gas appliance to the pipe and move the appliance to its desired location.
9. Pack the insulation removed in Step 5 around the pipe.
10. Push the cover plate back into position on the firebox wrap and jacket wrap and reattach them with
SCTCWS.
NOTE:
11. Unscrer,v
rem oved.
It may not be possible to place the screws back into the existing holes in the firebox wrap.
tf this occurs, new 1l8" holes may be drilled for screws.
the appliance and replace the firebox rignt side and fasten it with the two screws previously
PLUG BUTTON
P 5158
FIREBOX RIGHT SIDE
zF4la4 COVER PLATE
zt920t PLATER
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mffillg BUI LDING PRODUCTS DIVISION
P.O. Box 128, Florence, AL. 35630
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FORM NO. P11523-1.J6

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INSTALLATION AND OPERATION INSTRUCTIONS
FOR THE
MODEL K28, K36 OR K42 SURROUNDS
SURROUND MODEL NO.
K28
K36
K42
GENERAL INFORMATION
The installation and use of these surrounds on fireplaces other than those shown above is not
recommended.Any 6" diameter air duct made from non-combustible material can be used to
connect the surround to the combustion air inlet boxes.-A 6" diameter insulated, flexible,
aluminum duct will be easiest to install and provide the highest degree of efficiency.
When you install this surround on your fireplace, most of the air that would normally be pulled
from your house to support combustion of the fuel in the fireplace, and supply the excess air that
travels up the flue, can be drawn directly from the outside. This eliminates the need to heat the
outside air to room temperature as is done when the air travels across the room to the fireplace.
This feature will definitely save heat that is being prduced by the fireplace or other heat sources in
the house and should substantially reduce the cost of heating your home. The amount of savings is
dependent on the difference in the outside temperature and the temperature you maintain inside,
the tightness of your home, and the cost of your heating fuel.
INSTALLATION OF THE SURROUND
1. Remove the surround and accessories from the carton. Lay the painted parts on carpet or some
suitable surface to prevent scratching the paint.
FIREPLACE TO BE USED O'V
MARTIN MODEL 8W2845
MARTIN MODEL BW3645A /
.MARTIN MODEL BW4245A 1/

2.
3.
Assemble the surround as shown by lllustration No. 1.
Remove the screens and screen rods from the fireplace. On older model fireplaces, this may
require removing the screen shield (See lll. No. 2l.On new models, the retaining tabs shown on
lllustration No. 2 can be pushed down flat and the screens removed.
4. Replace the screen shield if it was removed in Step 3.
5. Begin with the bottom screw on each side of the fireplace opening and remove the first, third,
and fifth screw from each side (See lllustration No.2). Be sure that the second and fourth
screw up each side rs nof removed.
6. Place the surround on the face of the fireplace as shown by lllustration No.2 and replace the
screws removed in Step 5.
INLET BOX ASSEMBLY
(LEFT) K28 ZF77O3
K36 z'F7705
K42 2F7707
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FRAME ASSEMBLY
K28 ZF2A5
K36 z,F206
K42 2F207 (l,ai'
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INLET BOX ASSEMBLY
( RIGHT )
K28 2F7702
K36 ZF77O4, K42 ZF77O6
ILLUSTRATION NO. I

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WITH SURROUND
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.;BEND TAB DOWN TO KEEP ROD lN PLACE
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7.
ILLUSTRATION NO. 2
SCREEN SHIELD RETAII'..i'IG
TABS DETAIL
There are four '\4) holes in the surround just above the opening. Use these holes as guides and
drill four (4\ 1/8 inch diameter holes in the face of the fireplace.
8. lnstall one of the sheet metal screws provided with your surround in each of the holes drilled
in Step 7 so as to fasten the surround snugly against the fireplace.
9. Check to be sure there are no cracks between the surround and the face of the fireplace.Any
cracks could allow sparks to pass into the enclosure around the fireplace and come in contact
with the combustible building materials.
10. lnstall the new screen shield included with your surround and install the screen in the new
location.
11. Construct or cut a nine (9) inch diameter hole in the outside wall covering at each place where
an outside grille is to be iocated (See lllustration 3).
CAUTION: The location selected for the outside grills should not require the duct leading
from the surround to the grills to slope upward. The duct should be either level or
slope downward from the surround to the grill.
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SCREEN SHIELD FURN ISHED I

12. Cut a piece of duct of sufficient length to extend from the oval connector on the surround to
the surface of the exterior wall.
13. Shape one end of each duct to fit the oval connector on the surround.
14. Fasten the opposite end of each duct to the connector on the back of the combustion air inlet
boxes with two of the duct clamps provided (See lllustration 3).
15. Push the ducts through the holes provided in Step 11 and fasten the duct over the oval
connectors on the surround with the remaining twb duct clamps.
16. Nail the combustion air inlet boxes to the surface of the wall.
NOTE: lf the wall covering is brick or stone, approp, iate masonry fasteners should be used.
17. Push the speed nuts provided over the uppermost set of holes in the flange of the inlet boxes
and install the grill with the openings in the grill angled down so as to prevent rain from falling
into the grill openings.
INLET AIR BOX
ILLUSTRATION NO.
OPERATION OF THE SURROUND
To open the air slots on each side of the fireplace opening, rotate the control knobs
counterclockwise and push downward.
To lock the air slots closed, push the control knobs upward and rotate the control knobs clockwise.
To gain the most efficiency from your surround, under normal conditions, the air slots should be
open when a fire is in progress and closed when there is no fire in the fireplace. Should strong wind
or other atmospheric conditions cause excess air to be forced through the surround, the size of the
openings can be adjusted and locked in place with the control knob.
(9" DrA. HoLE
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CLAMP_f
GRILLE