March 4, 2002 Page 14 30211C
DV400S DIRECT VENT ROOM HEATER
R
B. Vertical Termination.
The following figures are the maximum distances
from the top of the unit, as well as the minimum air
space clearances that must be maintained: Maximum
straight unsupported rise - 25'; Maximum height - 40'
from the top of the unit. Maximum horizontal unsup-
ported run - 3'; air space clearances around vertical
venting - 1" on all sides; air space clearances around
horizontal venting - 11⁄2" on top and 1⁄2" on sides
and bottom. If an elbow is being used in an enclosed
wall, floor, or ceiling a top air space clearance of
3" must be maintained. These clearances must be
maintained at all times.
1. Position the Heater.
Position the heater in its desired location. Maintain
all clearances to combustibles.
2. Preparing the Ceiling.
Drop a plumb bob down from the ceiling to the posi-
tion of the heater flue exit and mark the location
where the vent will penetrate the roof. 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 fram-
ing will obstruct the venting system. You may wish to
relocate or offset the appliance to avoid cutting load
bearing members.
To bypass any overhead obstructions the vent sys-
tem may be offset using a 45° elbow or a 90° elbow.
Vent stabilizers have straps for securing these parts
to joists or rafters. lumbers tape may be purchased
locally and used in conjunction with vent stabilizers.
See Fig. 9.
3. Assembling vent sections
. Only use vent sup-
plied and listed for use with this Heater.
VINYL
SIDING
APPLY SEALANT TO ALL
FOUR SIDES
VINYL SIDING
STANDOFF
SCREW
BOLT HORIZONTAL
TOP TO VINYL
STANDOFF
WALL
THIMBLE
STRAP
Figure 6 - Insertion of Vent Pipe
Figure 7 - Decorative Wall Thimble
Figure 8 - Vinyl Standing Standoff
Wood Screws
90¡ ELBOW
90¡ ELBOW
VENT
STABILIZER
Figure 9 - Elbows with Stabilizer
