Empire Comfort Systems Deluxe VFD32FB0L-3 Installation Instructions And Owner's Manual page 5

Ceiling Clearances: The ceiling height should not be less than
42 inches from the top of the hood. See Figure 3.
Mantel clearances: Vent free firebox models must use the hood
supplied with the firebox, or one of the optional hood kits available
for each model. If a combustible mantel is installed, it must meet
the clearance requirements detailed below.
Grate clearance: The minimum clearance between the front legs
of the grate and front edge of the firebox is 2 inches.
Leave at least 36 inches clearance from the front of the firebox.
CEILING
21"
13"
84"
MIN.
(CEILING TO FLOOR)
3/4" COMBUSTIBLE
CLEARANCE REQUIRED
FROM TOP EDGE T
OF FIREBOX
Figure 3 - Clearances to Combustibles
33637-2-0215
cLEARANcES
12"
MAX
10"
MANTEL
COMBUSTIBLES
10"
8"
ALLOWED
18 1/2"
6 ½"
16 1/2"
5"
14 1/2"
3 ½"
12 1/2"
2"
10 1/2"
3/4"
9"
8"
MIN.
HOOD
FIREBOX
FACE
Page 5