Magic-pac MHP4 Series Installation And Maintenance Instructions Manual page 5

Positioning Divider Panel
Inspect the fit up of the unit to the wall sleeve. Verify
that the gaskets of the wall sleeve make a complete
seal to the unit paying particular attention to top and
bottom corners of unit to sleeve seal. Caulk if needed.
Ductwork
Ductwork should be designed and sized according to the
methods in Manual Q of the Air Conditioning Contractors of
America (ACCA).
Check unit air supply outlet for debris before making
ductwork connections.
It is recommended that supply and return duct connections
at the unit be made with flexible joints. If flexible ducts are
used, a 6" sheet metal starter collar is required.
The supply and return air duct systems should be designed
for the CFM and static requirements of the job (see Table 3
on page 6). They should not be sized to match the
dimensions of the duct connections on the unit. The
return duct should be sealed to the unit casing and terminate
outside the space containing the unit.
CAUTION
Do not screw into the side of the drain pan, or into the
indoor coil or heat strip.
Air Filter
All indoor return air must be filtered. A washable filter is
furnished with the unit, located in the return air opening. If
return duct is installed, provisions must be made to
accommodate filter servicing.
506325-01
Figure 3
Installation
Brackets
Remove and replace screw to secure bracket
The filter should be cleaned at least three times during each
of the heating and cooling seasons, or more frequently if
unusual conditions are encountered. To clean the washable
filter, shake filter to remove excess dirt and/or use a vacuum
cleaner. Wash filter in soap or detergent water and replace
after filter is dry. It is not necessary to oil the filter after
washing.
If an installation is made in which it is more desirable to
mount the filter exterior to the unit, in the return duct work or
elsewhere, the washable filter can be used or replaced with
a disposable filter. If a disposable filter is used, use the
information provided in Table 2 when sizing the disposable
filter.
Minimum Required Surface Area
M ode l Number
MHP*12
MHP*18
MHP*24
MHP*30-36
* 9 and 10 SEER models
Issue 0941
Securing Unit
(one each side)
Figure 4
for Disposable Filters
F ilte r Are a
192 square inches
288 square inches
384 square inches
480 square inches
Table 2
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