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These instructions are to be used in conjunction
w ith the fire codes and ordinances for your specific
area which can be obtained from  your local
building inspector for Fire M arshall.  If required, the
proper perm it m ust be obtained!  To protect your
fam ily and property, you should determ ine the
applicable codes and ordinances and strictly
adhere  to  them .

INSTALLATION INSTRUCTIONS

• Installing a w ood or coral heater is different than

other fuel burning appliances.

• Failure to install correctly could result in a serious

fire w ith loss of life and property.

A proper draft is absolutely essential to achieve

satisfactory perform ance.

• Too little draft w ill cause poor burning and

sm oking.

• Too high a draft w ill cause the unit to burn too hot

and use excessive fuel.

• The draft reading should be from  .04 to .07 inches

of w ater colum n (.06 W .C. is the desired draft).  It

is the responsibility of the user to obtain the
proper draft range.

• Low draft conditions may be corrected by using a

larger flue pipe, shorter connector pipe, or
extending the chim ney height.

• High draft conditions may be corrected by

installing a barom etric dam per.

• A qualified servicem an should be consulted of

correction of chim ney draft.

A.

CHOOSING A LOCATION

A central location is most desirable, how ever, the

m inim um  required run of pipe to the chim ney
should be the deciding factor.

Shenandoah Heaters must use an approved

system  for venting flue gases. 

Figures

2 - 5 indicate various methods.

B. PRIOR TO INSTALLATION

1.

Rem ove carton, crating and all packing

m aterial from  the heater.

2.

Fire the stove outdoors to cure the paint, and
burn off odor of oils and solvents used in

m anufacturing.  Could cause unpleasant odors
in the hom e.

C. CLEARANCE FOR SHEANDOAH HEATERS 

(Floor

Protector)

1.

SET THE HEATER ON A NON-COM BUSTIBLE
FLOOR PROTECTOR W ITH AN R-VALVE OF

1.0 OR LISTED FLOOR PROTECTION that
covers an area 8” larger than the heater on

three sides and extends 16” beyond the ash
and loading doors and under the chim ney

connector 2” beyond each side.

 

2.

IF APPROVED FLOOR PROTECTION IS NOT
USED:  Use the follow ing calculation to

determ ine if a proposed alternate floor

protector meets the requirem ents listed in the
appliance manual.

a.

Convert specification to R-value.

i.   R-value is given – no conversion is needed.

ii.  K-factor is given w ith a required thickness    

 (T) in inches: R = 1/k x T

iii. C-factor is given: r = 1

b. Determ ine the R-value of the proposed

alternate floor protector.

i.

Use the formula in step (a) to convert   

values not expressed as ”R”.

ii.   For multiple layers, add R-values of each      

 layer to determ ine the overall R value.

c. If the overall R-value of the system  is greater

than the R-value of the specified floor

protector, the alternate is acceptable..

Exam ple:
The specified floor protector should be ¾ inch

thick material w ith a K-factor of 0.84.  

The

proposed alternate is 4” brick w ith a C-factor of

1.25 over 1/8” mineral board with a K-factor of
0.29.

Step (a.) Use the form ula above to convert

specification to R-value.  
R = 1/k x

 

T = 1/0.84 x .75 = 0.893

Step (b.) Calculate R of proposed system

4” brick of C= 1.25, therefore

R brick = 1/C = 1/1.25 = 0.80
1/8”m ineral board of k=0.29, therefore

R min.bd = 1/0.29 x0.125 = 0.431
Total R =  Rm ineral board =

0.8 + 0.431 = 1.231 

Step (c.) Com pare proposed system  R of 1.231 to

specified R of 0.893.  Since proposed
system  R is greater than required, the

system  is acceptable.

Definitions:

Therm al  Conductance  =  C  =              Btu              =                W          

  (hr)(ft )( F)

  (m )( K)

2

B

2

B

Therm al Conductance = 

k  =       Btu       =        W        =       Btu     

 (hr)(ft )( F)

 (m )( K)

(hr)(ft)( F)

2

B

2

B

B

Therm al Conductance = R = (ft )(hr)( F) = (m )( K)  

2

B

2

B

 

Btu       

          W

3.

Do not install in closets or alcoves.

4.

Keep combustibles at least three feet from the

heater.  This includes furniture, magazine racks,

rugs, clothing and firew ood.  

Do not dry clothes on or w ithin three feet of the
heater, or store flam m able liquids in the sam e room

as the heater.  

M inimum  clearances from  com bustible materials
w ithout protection:

M odel R77 ( See figure 1)

Sides    Back    Fuel Door    Top    Connector Pipe
    A          B

   36"       36"         36"            36"             18"

5.

M inimum  clearances from  com bustible materials

w ith protection:

Summary of Contents for Shenandoah R77-E

Page 1: ...fore installation Save these instructions GENERAL INFORMATION Congratulations on your purchase of the Sierra Stove W e are confident that your new stove will provide you with years of safe comfortable and efficient heating This manual describes the installation and operation of the Shenandoah R 77E wood burning heater Please read this entire manual before you install and use your new room heater F...

Page 2: ...es and extends 16 beyond the ash and loading doors and under the chimney connector 2 beyond each side 2 IF APPROVED FLOOR PROTECTION IS NOT USED Use the following calculation to determine if a proposed alternate floor protector meets the requirements listed in the appliance manual a Convert specification to R value i R value is given no conversion is needed ii K factor is given with a required thi...

Page 3: ...e keeping minimum clearances in mind It should have no more than two 90 degree elbows The horizontal connectors are required by NFPA National Fire Protection Association No 211 to have at least inch rise to the linear foot It should be easily accessible for cleaning and should not pass through walls floors or ceiling without being properly insulated for heat The connector pipe should not be instal...

Page 4: ...ion Too little draft can cause smoke to puff from the thermostat damper or from the door To increase draft use a larger flue pipe shorten connector pipe or extend chimney height Too much draft could cause overheating A barometric damper installed in the connector pipe close to the heater can control excessive draft The flue area of the chimney should be a minimum area equivalent to 6 diameter flue...

Page 5: ... place DO NOT IN ANYWAY CAUSE THE UNIT TO OVER FIRE BY OVERRIDING THE THERMOSTAT CONTROL This is an unsafe operation of the unit and could severely damage the unit as well as endanger your home For this reason this type of operation would invalidate the warranty Burning Wood To start a wood fire place crumpled newspaper on the grate and cover it with kindling wood in a criss cross pattern Then pla...

Page 6: ...above 250 degrees Fahrenheit Below 250 degrees Fahrenheit produces black liquid creosote 4 Rather than burn the heater extensively at a low setting during the mild temperatures of 50 degrees and above build a small hot fire for a short period of time Chimney inspection and cleaning The chimney and heater should be inspected for creosote buildup every two weeks during the heating season Creosote is...

Page 7: ...are stores Care should be taken to avoid damaging the flue liner Chimney cleaning service is available in most areas D Firebrick Inspection At least once a year check the condition of the firebrick lining All broken firebricks should be replaced New firebrick can be obtained from your Shenandoah dealer SERVICE TIPS To be Performed Only by Qualified Installers Re calibrating Thermostat Control Note...

Page 8: ...Side Refractory Liner 421222 Shaker Handle 422232 Outer Grate Support Plate R77 SERVICE TIPS Continued To be Performed Only by Qualified Installers 4 If neither steps 2 or 3 adjusts as desired loosen catch 2 bolts0 and position in or out as required see figure below To check for gasket seal place a folded sheet of paper between the door and frame with the door shut Pull paper to feel friction betw...

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