Lomanco EVA-34 Guia De Inicio Rapido

EXHAUST VENT ADAPTER
FOR 3" OR 4" FLEXIBLE DUCT
EVA-34
For new installation including installation of roof exhaust vent
proceed to Step 1. If installing under existing roof exhaust vent skip
to Step 7.
I N S TA L L AT I O N I N S T R U C T I O N S
1. Determine the location for installation of EVA-
34 on the roof based on local building codes.
2. Upon determining the approximate location
for installation, the location of nearby rafters
will need to be determined so that hole in roof
is cut between rafters. Mark center for hole to
be cut approximately mid-way between the
two rafters. To ensure proper installation, place
center of hole such that shingles will be
covering the upper half of the roof vent
flashing. Refer to
FIGURE 1 Figure 1.
ensuring
vent location mark
center of hole for
adapter, cut a hole
approximately
inches in diameter
using the center
mark.
3. At this time the vent hose can be connected to
the adapter using a hose clamp or the hose
can be connected after installation from the
inside of the attic.
4. After hole is cut, place roofing cement around
edge of hole and slide the adapter with arrow
pointed up under the row of shingles that is
nearest the hole and position the collar in the
center of the hole. This will leave the lower half
Find us on
Facebook
of the adapter on top of the next row of
shingles. Note that some nails may have to be
raised or removed to allow the adapter to slide
into place such that the hose attachment
collar will fit in the hole. After vent is in place
and the hose collar is centered in the hole, the
adapter should be nailed down using the
designated nail holes.
5. Next, install the vent over the exhaust hose
adapter. Trim shingles to allow the vent to be
installed correctly. Place an ample amount of
After roofing cement on the underside of the vent
proper flange and carefully slide base of the vent
OUTSIDE INSTALLATION
5
1.800.643.5596 • Lomanco, Inc. • lomanco.com
under shingle with arrow pointing up. Make
sure the throat of the vent is centered over
exhaust hose adapter throat. Fasten the base
to roof decking with roofing nails, keeping
heads of nails under shingles where possible.
INSIDE INSTALLATION
SOFFIT MOUNTING
at the soffit. The EVA-34 will also work great in this application. Simply mount the flat face of the EVA-34
Exhaust Vent over the soffit opening, secure using screws in the pre-molded holes, and finally connect the exhaust hose
to the adapter.
1
Install all Exhaust Ventilation at the SAME HEIGHT within a common attic area.
Installation of exhaust vents at more than one level on a roof allows the upper exhaust vent to pull air in from lower exhaust vents rather
than from the intake vents. Intake air must come from intake vents located near the lower part of the attic space to properly ventilate the
total attic area and eliminate weather infiltration.
2
Install ONLY ONE TYPE of Exhaust Ventilation within a common attic area.
Exhaust Vents pull air from the easiest intake source. Vent types cannot be mixed. The use of different types of exhaust vents could make
EVA-34
one of the vents act as intake for the other. Intake air must come from intake vents located near the lower part of the attic space to
properly ventilate the total attic area and eliminate weather infiltration.
3
Install a BALANCED SYSTEM of Intake and Exhaust Ventilation.
50% Intake Ventilation - Intake vents located near the lower part of the attic area are required to balance out your ventilation system.
50% Exhaust Ventilation - Use a Lomanco Ventilation Selector Guide, or the calculators at lomanco.com to determine the number of
vents needed to properly ventilate an attic to meet the Ventilation Minimum Property Standard.
6. Lomanco, Inc. recommends to finish the
mount by sealing all seams and nails with
roofing cement. Note: On 700 Series Vent DO
NOT CAULK gap between sides and base or
back and base. Also use roofing cement to
fasten down loose edges of shingles.
7. FOR INSTALLATION WITH
Exhaust Vent
INSTALLED ROOF EXHAUST VENTS
• The exhaust vent adapter can be easily installed from
inside the attic under an existing exhaust roof vent. The
adapter should be centered under the existing hole with
the arrow pointed toward the peak of the roof and
fastened to the underside of the roof decking. Wood
screws of a length less than the thickness of the decking
material should be used to fasten the adapter to the
decking. It is recommended that a screw should be used
in each of the 8 pre-molded holes. After the adapter is
fastened to the underside of the decking, the exhaust
hose should be attached to the adapter using an
EVA-34
adjustable clamp. This completes the installation.
Note: We are aware that at times the exhaust hose is vented through an opening
DO
MUST
Steps
to attic ventilation
PREVIOUSLY
22150_0114
Follow us on
Twitter