CR Series Woodburning Fireplaces
Framing
Framing can be constructed before or after the fire- place is set in place, however, most installers build the frame before setting the fireplace.
Frame fireplace with 2 x 4 lumber or heavier materi- als. Refer to framing dimensions in Figures 1 or 2 for basic fireplace specifications. Headers and support studs must be turned on end as illustrated in Figure 2, Page 4.
NOTE: Framing should be positioned to accommo- date wall covering and fireplace facing material.
Hard, Flat
Surface
Insulation
Platform
FP555CR
Fig. 7 Insulation between platform and fireplace.
Chimney Set-up
Since you have already preplanned the chimney run, you should know exactly how the installation is to be accomplished — how much pipe is required, the number of elbows, if any, and type of termination to be used.
CAUTION: REPORT TO YOUR DEALER ANY PARTS DAMAGED IN SHIPMENT, SPECIFICALLY CHECK THE END CONNECTION OF CHIMNEY
SECTIONS AND ELBOWS.
Straight-Up Chimney Installation
To locate the centerline of the flue put the fireplace in final position and place a plumb bob from the ceiling to the center of the fireplace flue collar. Mark this spot on the ceiling. Draw a line through that mark to either side of the firebox and indicate dimension X to locate the side wall framing. (Fig. 8) Be sure to observe clear-
8
ance requirements for side and parallel combustible walls as noted in Figure 20, Page 15.
Offset Installation
In order to clear an obstruction, it may be necessary to offset chimney from vertical. This is accomplished by using CFM Corporation elbows. Use the 30° Offset Elbow table on Page 5 to determine proper offset and parts required.
Each offset requires two (2) elbows. The second elbow is equipped with support straps. It is very important to install the second elbow in each offset as close to the ceiling or support as possible so the elbow straps can be secured to framing members to help support the weight of the chimney.
Determine offset distance of your chimney arrange- ment from centerline of fireplace to centerline of chim- ney where it is to pass through ceiling.
Locate center point of the chimney on ceiling as though a straight up chimney arrangement is to be used. Measure your offset dimension from the chim- ney center point on the ceiling.
| Chimney Centerline |
Actual Centerpoint | |
| 10³⁄₈” |
| (264mm) |
| Plumb Line |
| Plumb Bob |
| Imaginary Center- |
| point |
| FP556CR |
Fig. 8 | Locate centerline of chimney with plumb line. |
| 20001316 |