Dovre 500cc Руководство по установке и эксплуатации - Страница 10
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NOTE;
IN CALCULATING EQUIVALENT THICKNESS OF ALTERNATE MATERIALS, THE
FOllOWING FORMULA SHOULD BE USED:
ONE LAYER OF 3/8" (O.37SINCH)
THICK MILLBQl\RD HAS A K FACTOR OF
(BTU)
JINCH)
0.21 (HR) (FT ) (oF) AT
vs-r
IF COMMON BRICK WERE BEING USED AS AN ALTERNATE MATERIAL WITH A K FACTOR OF
S.O AT
zs-r.
THE THICKNESS REQUIRED WOULD BE AS FOLLOWS:
REQUIRED THICKNESS
=
(K OF BRICK/K OF MILLBQl\RD) X (THICKNESS OF
MILLBOARD) OR (S/0.21)
X 3/8 IN.)
=
91N. OF BRICK - MINIMUM.
WAll PROTECTION
YOUR DOVRE UNIT HAS BEEN TESTED AND APPROVED FOR INSTALLATION WITHOUT ANY SPECIAL
PROTECTION FOR THE WALLS AROUND IT, AS LONG AS THE NECES&\RY CLEARANCES BETWEEN THE
UNIT, STOVEPIPE, AND WALL ARE MAINTAINED.
(SEE DIAGRAM UNDER
·CLEARANCES·
FOR
DETAIL).
HOWEVER, IF YOU WANT TO REDUCE THE REQUIRED DISTANCE BETWEEN THE UNIT AND
WALLS, YOU MAY CONSTRUCT OR PURCHASE A WALL PROTECTOR OR USE AN OPTIONAL REAR HEAT
SHIELD ATTACHMENT, (PART #SOOHSB)
WHICH REDUCES THE CLEARANCE TO AN UNPROTECTED
REAR WALL TO A MINIMUM 8" FROM THE UNIT, WHEN USED IN CONJUNCTION WITH A DOUBLE -WALL
CONNECTORPIPE.
IF YOU ELECT TO PURCHASE A WALL PROTECTOR, IT MUST BE LISTED.
UNDERWRITER'S
LABORATORIES REQUIRE A MINIMUM
12" CLEARANCE BETWEEN ANY STANDARD HEATER AND WALL
PROTECTOR.
YOUR CHOICE OF A LISTED WALL PROTECTOR WILL
DEPEND ON HOW MUCH
UNPROTECTED CLEARANCE MAY BE REDUCED. FOR EXAMPLE, A PROTECTOR OFFERING A 2/3 OR 66~
REDUCTION WILL ALLOW A 36" CLEARANCE TO BECOME 12"; AND A 112 OR SO~ REDUCTION WILL
CHANGE A 24" CLEARANCE TO 12'.
BE SURE TO FOLLOW THE MANUFACTURER'S INSTAllATION
INSTRUCTIONS ON ANY LISTED WALL PROTECTOR.
SHOULD YOU DECIDE TO CONSTRUCT A WALL PROTECTOR, BE SURE IT IS APPROVED BY YOUR LOCAL
BUILDING CODE OFFlCAl.
THE MOST COMMON WALL PROTECTOR CONSTRUCTION IS A VENTILATED,
NON-COMBUSTIBLE WALL SHIELD.