Rear Extension; Plenum - Modine Manufacturing Sentinel UVV Installation And Service Manual

ACCESSORY INSTALLATION
REAR EXTENSION (Optional)
Instructions only applicable to accessories sold by Modine. If not
provided by Modine, consult manufacturer's recommendations.
The rear extension is designed to provide a sealed transition
from the fresh air intake and exhaust air outlet on the back of
theclassroomunittotheoutsideofthebuilding,specifically
when the wall openings are not aligned. Units are available with
a 15" deep or 6" deep rear extension with adjustable sill heights.
Installation
The recommended procedure for installation is described as
follows (reference Unit Installation Instructions beginning on
page 3 of this manual. Unit must comply with all requirements,
regardlessifarearextensionisinstalledornot):
1. C heckthefloorforlevelnessandchecktoensurethewallis
atarightangletothefloor.Shouldtherebeanyirregularity,
the placement of foam tape on the outside edges of the rear
extensionwillfillthegapsbetweentherearextensionand
the wall. The tape will act as a sealant, creating a smooth
transition from the rear extension to the wall.
2. After adjusting for any irregularity in the location site, locate
the position for the unit mounting bolts.
3. Remove the backing strip from the gasket on the rear
extension. Place the unit against the rear extension in the
correct location, ensuring a tight seal between the two.
4. U singsheetmetalscrews(byothers)screwabovetopplate
and below bottom plate, totaling 4 connection points from the
rearextension,intotheunit(seeFigure15.1).
5. Measure the sill height and adjust the movable plates prior to
moving cabinet and rear extension to the wall. The movable
plates and rear extension openings are designed so there is
an overlap of the wall opening, allowing for a sealing surface
from the outside.
6. Move the cabinet and rear extension against the wall.
7. Check to ensure that the unit is plumb and level in both
directions. If adjustment is necessary, Modine recommends
the placement of metal shims in the outer most corners of the
base.
8. Remove the backing strip from the gasket on the wall sleeve,
and place the unit and rear extension in the correct location
(seeFigure15.1).
9. U singscrews(byothers)screwabovetopplateandintothe
wall in each side panel – 2 connection points.
10. Complete installation of unit referencing page 3 of this
manual(unitmustbesecuredtothefloor).
Figure 15.1 - Rear Extension
TOWARD WALL
MOUNTING HOLES
TOWARD UNIT
MOUNTING HOLES
AIR 3-500.3
PLENUM (Optional)
Instructions only applicable to accessories sold by Modine. If not
provided by Modine, consult manufacturer's recommendations.
Thefieldinstalledplenumisdesignedtodischargeairdirectly
into the space without ductwork to distribute air. Plenums
are provided in 2" height increments, and multiple discharge
configurations.
Installation
The recommended procedure for installation is described as
follows:
1. U nitmustbesecuredtothefloorbeforeplenumsare
mounted on top to prevent injury.
2. Place plenum centered on the top of the unit.
3. Remove the front access panel, so interior base of plenum is
available.
4. M ounttheplenumbyusingsheetmetalscrews(byothers)
through mounting holes at bottom center of each side panel
(seeFigure15.2).Besuretouseaminimumofonescrew
for each side panel even if you are not able to use holes
provided.
Figure 15.2 - Plenum Installation
ACCESS PANEL
MOUNTING HOLES
(Top Discharge Shown)
15