AMST Installation Manual
4
4 Replacement Parts
When reporting shortages or damages, or ordering repair
parts, give the complete product model and serial numbers
as stamped on the product. Replacement parts for this
product are available through your contractor or local
distributor. For the location of your nearest distributor
consult the white business pages, the yellow page section
of the local telephone book or contact:
HOMEOWNER SUPPORT
19001 KERMIER ROAD
WALLER, TEXAS 77484
(855) 770-5678
5 Pre-Installation Considerations
5.1 Preparation
Keep this document with the unit. Carefully read all
instructions for the installation prior to installing product.
Make sure each step or procedure is understood and
any special considerations are taken into account before
starting installation. Assemble all tools, hardware and
supplies needed to complete the installation. Some items
may need to be purchased locally. Make sure everything
needed to install the product is on hand before starting.
5.2 System Matches
The entire system (combination of indoor and outdoor
sections) must be manufacturer approved and Air-
Conditioning, Heating, and Refrigeration Institute (AHRI)
listed. NOTE: Installation of unmatched systems is not
permitted.
5.3 Interconnecting Tubing
Give special consideration to minimize the length of
refrigerant tubing when installing air handlers. Refer to
Remote Cooling / Heat Pump Service Manual RS6200006,
and TP-107 Long Line Set Application R-410A for tubing
guidelines. If possible, allow adequate length of tubing such
that the coil may be removed (for inspection or cleaning
services) from the cabinet without disconnecting the tubing.
5.4 Clearances
The unit clearance from a combustible surface may be
0”. However, service clearance must take precedence. A
minimum 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
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
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 at a max altitude of 10,500 feet above
sea level or a min altitude of -184 feet below sea level.
If the unit is located in an unconditioned area with high
ambient temperature and/or high humidity, the air handler
may be subject to nuisance sweating of the casing. On
with a vapor barrier is recommended. A secondary drain
pan below the unit is also recommended to protect the
installation site.
shown in Figures 2, 3, 4 and 5. The unit may be installed
For Upflow and Downflow Installations Only
Side Drain Pan and Extension Removal: Refer to Figure
1, remove the two (2) screws that secure the drip shield
support brackets to the condensate collectors (front and
back). Unsnap the side drain pan from the bottom drain
pan using a screw driver or any small lever. The side drain
pan, drip shield brackets and the drain pan extension may
now be removed. From Figure 1, drain port labeled (A) is
the primary drain for this application and condensate drain
line must be attached to this drain port. Drain port (a) is for
the secondary drain line (if used). If the side drain pan is
removed, the drain port opening in the access panel must
be covered by the accessory drain port plug (DPK1) as
SIDE DRAIN PAN
DPK1 DRAIN PLUG
COIL ACCESS PANEL
MAIN DRAIN PAN