Magic-Pak MGE4 Series Installation And Maintenance Instructions Manual page 13

Air Filter
All indoor return air must be filtered. A washable filter is
furnished with the unit, located in the return air opening. If
a filter is installed at a separate central return location, then
the factory furnished filter must be removed from the unit.
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 5 when sizing the disposable
filter.
Model Number
15MGE4-11-09*
24MGE4-11-09*
15MGE4-11-12*
24MGE4-11-12*
36MGE4-11-12*
15MGE4-11-18*
24MGE4-11-18*
36MGE4-11-18*
48MGE4-11-18*
60MGE4-11-18*
*MGE4-11-24*
*MGE4-11-30*
*MGE4-11-36*
Table 5. Minimum Required Surface Area for
Disposable Filters
Condensate Drain
Provisions must be made to properly drain the outdoor
drain pan of this appliance.
Outdoor drain connection: 3/4" NPT to 3/4" PVC fitting
(schedule 40 minimum). Drain must be trapped as shown
in Figure 6. The drain line should pitch gradually downward
at least 1" per 10' of horizontal run to open drain.
Use thread sealant on the threaded fittings. Install
threaded fittings by hand only. Do not over torque the
fittings.
507858-01
Filter Area (in
175
210
285
325
385
435
480
CAUTION
Figure 6. Condensate Drain Installation
)
2
Electrical Connections
All wiring must be done in accordance with the National
Electrical Code (NEC), ANSI/NFPA No. 70 (latest edition);
Canadian Electrical Code CSA C22.2 Part 1 (latest edition);
or local codes, where they prevail. Any alteration of internal
wiring will void certification and warranty. Units are factory
wired for a 230 volt power supply. If power supply is 208
volts, it will be necessary to change a wire connection on
unit transformer from 240 volt terminal to 208 volt terminal
as shown on the wiring diagram.
Use wiring with a temperature limitation of 75°C minimum.
Run the 208 or 230 volt, single phase, 60 hertz electric
power supply through a fused disconnect switch to the
control box of the unit and connect as shown in the unit's
wiring diagram.
The unit must be electrically grounded in accordance with
local codes or, in the absence of local codes, with the
National Electrical Code ANSI/NFPA No. 70 (latest edition)
or CSA C22.2 Part 1 (latest edition).
Power supply to the unit must be NEC Class 1 and must
comply with all applicable codes. A fused disconnect switch
should be field provided for the unit. The switch must be
separate from all other circuits. If any of the wire supplied
with the unit must be replaced, replacement wire must be
of the type shown on the wiring diagram.
Electrical wiring must be sized to minimum circuit ampacity
marked on the unit. Use copper conductors only. Each
unit must be wired with a separate branch circuit and be
properly fused.
Gas Supply and Piping
Refer to unit rating plate to make sure the furnace is
equipped to burn the gas supplied (natural or propane).
Issue 1922 Page 13 of 21