Approved Pipe; Use Of Elbows; Measuring Standards; Exhaust Restrictor Instructions - Heat & Glo MEZZO-1000-AU Installation Manual

C. Approved Pipe
This appliance is approved for use with Hearth & Home
Technologies DVP venting systems. Refer to Section
12.A for vent component information and dimensions.
mix pipe, fittings or joining methods from
DO NOT
different manufacturers.
The pipe is tested to be run inside an enclosed wall.
There is no requirement for inspection openings at
each joint within the wall.
WARNING! Risk of Fire or Asphyxiation. This appli-
ance requires a separate vent. DO NOT vent to a pipe
serving a separate solid fuel burning appliance.
D. Use of Elbows
Diagonal runs have both vertical and horizontal vent as
pects when calculating the effects. Use the rise for the
vertical aspect and the run for the horizontal aspect (see
Figure 4.4).
º
Two 45 elbows may be used in place of one 90
º
On 45 runs, one foot of diagonal is equal to 8-1/2 in.
(216 mm) horizontal run and 8-1/2 in. (216 mm) vertical
run. A length of straight pipe is allowed between two 45
elbows. See Figure 4.4.
Vertical
Figure 4.4
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
18
º
elbow.
8-1/2 in.
(216 mm)
Horizontal
E. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards:
 Pipe measurements are shown using the effective
length of pipe. See Section 12.A for information on
effective length of pipe components.
 Measurements are made from the appliance outer
wrap, not from the standoffs.
 Horizontal terminations are measured to the outside
mounting surface (flange of termination cap). See
Figure 4.3.
 Vertical terminations are measured to bottom of
termination cap.
 Horizontal pipe installed level with no rise.
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F. Exhaust Restrictor Instructions
Note: The exhaust restrictor comes installed on
product. Exhaust restrictor: MEZZO-1000-AU
º
1. Locate the two pilot holes in the inside firebox
chamber as shown in Figure 4.5.
2. Break the flue restrictor into two pieces. Do this by
bending the part back and forth until it breaks. See
Figure 4.6.
3. The setting for MEZZO-1000-AU is 2-2. Align the
holes marked "2" on the numbered exhaust restrictor
piece with the hole on the other exhaust restrictor
piece. See Figure 4.7. Align the exhaust restrictor
pieces with the pilot holes in the inner firebox cham
ber. Use two 1/2 in. (13 mm) self-piercing screws to
secure vent restrictor to firebox heat shield.
4. In some applications, such as those where the fire
place is elevated off the floor, the exhaust restrictor
may be painted, but painting is not required.
NOTICE: Before painting, contact your dealer for
information on the appropriate high temperature paint.
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