09/04
30484 Rev Q
21
MAXUS DIRECT VENT HEATER
c.
Rear Vent Lengths
Attach either a straight section, a 90 degree elbow,
or a 45 degree elbow (depending upon your
specific installation) to the appliance. See
Figure 29.
DO NOT USE
a starter elbow when
venting out the rear of the appliance. A maximum
of three elbows is allowed in the vent system.
Use only pipe listed with this appliance.
See the Cinch Pipe assembly instructions for
specific instructions on each type of venting.
Figure 29
Length Allowances for Vertical Termination Only
Note:
Horizontal runs will require the use of one vent
support (or metal plumber’s strap) for every 5 ft of vent.
Figure 30
Installing the Firestop Spacer
d.
Firestop Spacer/Vent Installation
Frame an opening and install a firestop spacer
whenever the vent penetrates a ceiling/floor area,
as shown in Figure 30. Frame the opening with
the same sized lumber as used in the ceiling/
floor joists. Unless the flue is offset, the hole
should be directly above the appliance.
DO NOT
pack insulation around the vent.
WARNING - RISK OF FIRE!
Always maintain minimum clearances or greater
around the vent system. Do not pack air spaces with
insulation or other material.