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5.4 Clearances
The unit clearance from a combustible surface may be 0". However, service clearance must take precedence. A mini-
mum of 24" in front of the unit for service clearance is required. Additional clearance on one side or top will be required
for electrical wiring connections. Consult all appropriate regulatory codes prior to determining final clearances. When
installing this unit in an area that may become wet (such as crawl spaces), elevate the unit with a sturdy, non-porous
material. In installations that may lead to physical damage (i.e. a garage) it is advised to install a protective barrier to
prevent such damage. Always install units such that a positive slope in condensate line (1/4" per foot) is allowed.
5.5 Horizontal Applications
If installed above a finished living space, a secondary drain pan (as required by many building codes), must be installed
under the entire unit and its condensate drain line must be routed to a location such that the user will see the condensate
discharge.
6
Installation Location
NOTE: These air handlers are designed for indoor installation only.
The ARUF**14**, ARPT**14**, ASPT**14** and ASUF**14** product lines may be installed in one of the upflow, downflow,
horizontal left or horizontal right orientations as shown in Figures 2, 3, 4 and 5. The unit may be installed in upflow or
horizontal left orientation as shipped (refer to specific sections for more information).
Minor field modifications are necessary to convert to downflow or horizontal right as indicated in below sections.
6.1 Upflow Installation
No field modifications are mandatory however to obtain maximum efficiency,
the horizontal drip shield must be removed.
Drip Shield Removal: Refer to Figure 1, remove the two (2) screws that
secure the drip shield support brackets to the condensate collectors (one
screw per side). Remove the two (2) screws that secure the drip shield to the
drain pan. The drip shield and drip shield brackets may now be removed.
The bottom left drain connection is the primary drain for this application and
condensate drain line must be attached to this drain connection. The top
connection of the three drain connections on the drain pan must remain
plugged for this application. The bottom right drain connection is for the sec-
ondary drain line (if used).
6.2 Horizontal Left Installation
No field modifications are permissible for this application.
The bottom right drain connection is the primary drain for this appli-
cation and condensate drain line must be attached to this drain
connection. The top connection of the three drain connections on
the drain pan must remain plugged for this application. The bottom
left drain connection is for the secondary drain line (if used).
In applications where the air handler is installed in the horizontal
left position ( ), and the return air environment see humidity levels
above 65% relative humidity coupled with total external static lev-
els above 0.5" e.s.p., a horizontal condensate management kit is
available for field application. Kit nomenclature can be found in the
table above and in the specification sheets.
Screw
Screw
MODEL LISTS FOR HORIZONTAL LEFT KITS
ARPT36D14**, ARPT42D14**,
CMK0001
ARUF48D14**, ARUF60D14**, ASPT42D14**
ARPT48D14**, ARPT60D14**, ASPT48D14**,
CMK0002
ASPT60D14**, ASUF59D14**
ARPT36C14**, ARUF30C14**, ARUF36C14**,
ARUF42C14**, ASPT30C14**, ASPT36C14**,
CMK0003
ASUF39C14**, ASUF49C14**, ASPT42C14**,
ASPT48C14**
CMK0004
ARPT18B14**, ARPT24B14**
CMK0005
ARUF18B14**
CMK0006
ARUF24B14**
ARPT30B14**, ARUF30B14**, ASPT24B14**,
CMK0007
ASUF29B14**
4
DRIP SHIELD REMOVAL
Figure 1
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