Mendota FV46, Инструкция по установке и эксплуатации

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85-03-01108-C FV46 Page 26
Hearth Pad Requirement
A non-combustible hearth protector with a thermal insulation rating of R-1 is required when installing this fireplace directly on
the floor and must extend a minimum of 18" in front of this fireplace.
For every 1” the fireplace is raised off the floor, th e depth of the required R-1 hearth protector may be
reduced by 2”.
If the fireplace is raised off the flo or 6" or more, no R-1 h earth protector is required for fire
protection.
Raising the fireplace only removes the requirement for a R-1 rated hearth protector. Th e floor in fron t of the
fireplace will still get hot up to 200 °F. The higher the firep lace is raised th e lower the temperatures on the
floor will be. Materials u sed on the floor in fron t o f the firep lace must be ap propriate for elevated
temperatures.
Flooring materials such as carpet, viny l and laminated floors may warp or be damaged if installed in front of
this fireplace. If these materials are u sed it is reco mmended that the fireplace is raised at least 12” above the
floor.
Mendota does not guarantee any materials used aro und the fireplace. Mendota disclaims any and all liability
for any damage to finishing materials including warping, discoloring, cracking, peeling or flaking. Th is also
includes any off-gassing or unpleasant smells from materials when they are heated.
Hearth Pad Materials
A hearth pad with an R-Value of at least 1 is required unless the fireplace is raised off the floor 6” or more. A list of common
finishing materials and their R-Values is included in the “R-Values of Common Finishing Materials” section of this manual. Many
finishing materials have a low R-Value. For example, 1” thick granite has a R-Value of only .05. When building a conforming
hearth pad it may be necessary to use an insulating underlayment board with a high R-Value. A list of some possible
underlayment boards is given below. These boards are not structural they can be easily dented and damaged. They must only
be used as an insulator under other non-combustible finishing material.
The fireplace can sit on a wood or cement floor. An R-1 rating is not required under the fireplace.
R-Values of Hearth Pad Boards
Material Thickness R-Value Application
Mineral Fiber Board ( Micore 160, 300, SB) 1/2" 1.27 – 1.47 Hearth Pad Insulator
Cearmic Board (Rescor 360) 1/2" 1.11 Hearth Pad Insulator
Cearmic Board (Fiberfrax Duraboard LD) 1/2" 1.10 Hearth Pad Insulator