Figure 25. Installing Filters
Filter Replacement
Replace the electrostatic air purifying and deodorizing
filters every 6 months or sooner if they turn brown.
Replacement filters can be purchased from your sales
representative or distributor.
Use the new filter immediately once it has been
removed from the package.
Auto Random Re-start Function
If there is a power loss to the building, the units will
randomly restart when the power is restored. Control
will restart at the last setting regardless of how long the
power was off.
Low Ambient Kit
With this option, the unit can cool down to 32ºF outdoor
temperature. (Standard units only cool down to 66ºF). To
install, wire the Fan Speed Control Module (FSCM) in the
outdoor unit per wiring diagram supplied with the kit. Attach
the Outdoor Coil Sensor to the return bend as shown in
Figure 26
. Wrap sensor and return bend with insulating
tape to promote accurate sensing of the refrigerant
temperature. Refer also to the instructions supplied with the
kit.
Figure 26 Low Ambient Location
Minimum and Maximum Operating
Temperature
Cooling
Temperature
Ts ºF
Th ºF
Minimum Indoor
67
57
Maximum Indoor
80
67
Minimum Outdoor
*66
57
Maximum Outdoor
115
75
Heating (Heat Pump Only)
Temperature
Ts ºF
Th ºF
Minimum Indoor
50
-
Maximum Indoor
80
-
Minimum Outdoor
16
16
Maximum Outdoor
75
65
Ts = Dry Bulb Temperature, Th = Wet Bulb Temperature
* 32ºF with optional Low Ambient Kit
WARNING
!
Disconnect the main power supply before opening
the return air grille.
DO NOT restore power until the grille is closed.
IM-5WMF(SEER13)-0706
Page 23
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