B. Construct the Appliance Chase
A chase is a vertical boxlike structure built to enclose the gas appliance and/or its vent system. Vertical vents that run on the outside of a building may be, but are not required to be, installed inside a chase.
Construction of the chase may vary with the type of build- ing. These instructions are not substitutes for the require- ments of local building codes. Local building codes MUST be checked.
Chases should be constructed in the manner of all outside walls of the home to prevent cold air drafting problems. The chase should not break the outside building envelope in any manner.
Walls, ceiling, base plate and cantilever floor of the chase should be insulated. Vapor and air infiltration barriers should be installed in the chase as per regional codes for the rest of the home. Additionally, Hearth & Home Technologies recom- mends that the inside surfaces be sheetrocked and taped (or the use of an equivalent method) for maximum air tight- ness.
To further prevent drafts, gas line holes and other openings should be caulked with high temperature caulk or stuffed with unfaced insulation. If the appliance is being installed on a cement slab, we recommend that a layer of plywood be placed underneath to prevent conducting cold up into the room.
WARNING
Fire Risk
•Construct chase to all clearance specifications in manual.
•Locate and install appliance to all clearance specifications in manual.
Heatilator • RBV4236/RBV4842 • | 9 |