Sapphire Audio DV425TR owner manual Vertical Installation INSTRUCTIONS

DV425TR DIRECT VENT ROOM HEATER

VERTICAL INSTALLATION INSTRUCTIONS, cont.

NOTE: Maximum number of 90° elbows permitted for a vertical installation is four, provided the termination falls within the shaded area shown in vent graph on page 33. See also Figure 12 below, within the 4, 90’s configuration, the maximum allowable pipe length on the horizontal runs is 1’, the minimum allowable pipe length on vertical runs is 1’. ADDITIONAL RESTRICTION: This installation may not have two horizontal sections connected by 90° elbows.

FIG. 12	1'
	2'

2'

1'

1'

Step 2.

Set the gas stove in its desired location. Drop a plumb bob down from the ceiling to the position of the stove flue exit, and mark the location where the vent will penetrate the ceiling. Drill a small hole at this point. Next, drop a plumb bob from the roof to the hole previously drilled in the ceiling, and mark the spot where the vent will penetrate the roof. Determine if ceiling joists, roof rafters, or other framing will obstruct the venting system. You may wish to relocate the stove, or to offset, as shown in Figure 11, to avoid cutting loadbearing members.

Step 3.

To install the round support box/wall thimble in a flat ceiling, cut a 10" (254mm) square hole in the ceiling, centered on the hole drilled in Step2. Frame the hole as shown in Figure 13.

CEILING JOISTS

FRAMING

FIG. 13

1 - 1/2" LONG WOOD SCREWS

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