Step (b): Calculate R of proposed system. 4” brick of C=1.25, therefore Rbrick = 1/C = 1/1.25 =0.80 1/8” mineral board of K = 0.29, therefore Rmin.bd. =1/029 x0.125 = 0.431
Step (c): Compare proposed system R of 1.231 to specified R of 0.893. Since proposed system R is greater than required , the system is acceptable.
Definitions:
Thermal conductance = C = Btu = W (hr)(ft²)(°F) (m²)(°K)
Thermal conductance = K = (Btu)(inch) = | W = | (Btu) | |
(hr)(ft²)(°f) | (m)(°K) |
| (hr)(tf)(°F) |
Thermal conductance = R = (ft²)(hr)(°F) = (m²)(°K)
Btu W
Install in accordance with 24 CFR, Part 3280 (HUD).
DETERMINING THE CHIMNEY LOCATION
A.CEILING EXIT (USING SINGLE WALL (minimum 24ga.) pipe and 2100°UL 103 HT type chimney system listed with manufacturer in this section of manual.) (See Page 12.)
1.Suspend a plumb bob from the ceiling above the unit so that the weight is hanging in the center of the flue exit. (A small weight on a string will serve as a plumb bob.) Mark the ceiling where the string is suspended to locate the center of the chimney.
2.After locating the center of the hole, install the ceiling support box, chimney flashing and rain cap per the chimney manufacturer’s instructions.
Now connect the stove and ceiling support box using #24 ga. minimum blue or black steel connector pipe (DO NOT USE GALVANIZED PIPE). Connect each section so the crimped end faces downward, and secure each section to each other using at least
three (3) sheet metal screws or rivets. Also use three (3) sheet metal screws to fasten pipe to collar on heater. (See Figure 5. Page 14.)
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