W415-0702 / B / 04.04.1226! WARNING5.1 INSTALLATION INTO A COMBUSTIBLE ENCLOSUREOUTSIDE AIR IS MANDATORY FOR A COMBUSTIBLE BUILT-IN ENCLOSURE INSTALL.When installing the insert as a "Built-in" appliance, it is important to maintain the clearances to combustibles,see "MINIMUM CLEARANCE TO COMBUSTIBLES" section.A non-combustible hearth must cover the flooring underneath, as well as, a minimum of six inches in front andto both sides of the appliance.A. Install floor protection.B. Frame structure maintaining minimum clearances. Locate and frame openings for both the exhaustand outside air. Outside air is mandatory for enclosure installations. See "OUTSIDE AIR" section.C. Refer to vent manufacturer's installation instructions and to "VENTING" section. Connect the vent.Install flashing, see "FLASHING INSTALLATION" section.D. Consideration must be taken during installation that removal of the insert is necessary for inspectionand annual maintenance. Install the vent cap.33”40”MINIMUMENCLOSUREHEIGHT17”27”3 1/2” MAX3 1/2”MAXNoncombustiblefloor protection.This protection mustoffer an R value of 0.4 (twolayers of 1/2” thick cement board, total 1” with each layer rated with anR value of 0.2).For temperature requirements, the enclosure space around andabove the heater must be left unobstructed.Centerline ofheater opening2”4 7/8”1 7/8”7 1/8”