Hearth & Home Technologies 2700-I Benutzerhandbuch

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2700-I  WOOD INSERT (ACT)
Page 6
September 1, 2008
7007-161H
CALCULATING ALTERNATE 
FLOOR pROTECTION
Material
 
Thermal Conductivity: k value
The k value indicates the amount of heat (in BTU’s) that will flow 
in 1 hour through 1 square foot of a uniform material 1 inch thick 
for each degree (F) of temperature difference from one side of 
the material to the other.  The LOWER the k factor means less 
heat is being conducted through the non-combustible material to 
the combustible material beneath it.  The k value of a material 
must be equal or smaller then the required k value to be accept-
able.
 
 
(BTU) (inch)
 
 
(foot
2
 (hour) (
o
F)
Thermal Resistance: R value
The R value is a measure of a material’s resistance to heat 
transfer.  R value is convenient when more than one material 
is used since you can add the R values together, whereas 
you can not do this for k value.  The HIGHER the R factor 
means less heat is being conducted through the non-com-
bustible material to the combustible material beneath it.  The 
R value of a material must be equal or larger then the re-
quired R value to be acceptable.
Converting k to R:
Divide 1 by k and multiply the results times the thickness in inch-
es of the material.
 
R = 1/k x inches of thickness
Converting R to k:
Divide the inches of thickness by R.
 
k = inches of thickness/R
Calculations:
Example: Floor protection requires k value of 0.84 and /4 inch 
thick.
Alternative material has a k value of 0.6 and is /4 inch thick.
Divide 0.6 by .75 = k value of 0.80.  This k value is smaller than 
0.84 and therefore is acceptable.
WARNING
•  Do NOT connect this unit to a chimney 
flue servicing another appliance.
•  Do NOT connect to any air distribution 
duct or system.
May allow flue gases to enter the house.
Asphyxiation Risk.
DESIGN, INSTALLATION & LOCATION 
Consideration must be given to: 
  • 
Safety
  • 
Convenience
  • 
Traffic flow
  • 
Chimney and chimney connector required
It is a good idea to plan your installation on paper, using exact 
measurements  for  clearances  and  floor  protection,  before 
actually beginning the installation.  If you are not using an 
existing chimney, place the appliance where there will be a 
clear passage for a factory-built listed chimney through the 
ceiling and roof.  
We recommend that a qualified building inspector and your 
insurance company representative review your plans before 
and after installation.
If this appliance is in an area where children may be near it is 
recommended that you purchase a decorative barrier to go 
in front of the appliance.  Remember to always keep children 
away  while  it  is  operating  and  do  not  let  anyone  operate 
this appliance unless they are familiar with these operating 
instructions.
•  Installation and use of any damaged appliance. 
•  Modification of the appliance.
•  Installation  other  than  as  instructed  by  Hearth  &  Home 
Technologies.
•  Installation and/or use of any component part not approved 
by Hearth & Home Technologies.
•  Operating  appliance  without  fully  assembling  all 
components.
•  Operating appliance without legs attached (if supplied with 
unit).
•  Do NOT Overfire - If appliance or chimney connector glows, 
you are overfiring.
Any such action that may cause a fire hazard.
WARNING
Fire Risk.
Hearth & Home Technologies disclaims any 
responsibility for, and the warranty will be 
voided by, the following actions: 
Inspect appliance and components for damage. 
Damaged parts may impair safe operation.
WARNING
•  Do NOT install damaged components.
•  Do NOT install incomplete components.
•  Do NOT install substitute components.
Report damaged parts to dealer.
Fire Risk.