484 01 3700 01
3
S
Place liquid filter dryer near ID unit to reduce the risk of
debris clogging the valve.
S
Make sure TXV bulb is securely fastened and wrapped in
the indentation on vapor line tube.
ENH4X Models:
These coils have a factory--installed hard--shutoff TXV
designed only for use with R--410A refrigerant. Use only
with outdoor units designed for R--410A.
NOTE
: All TXV’S have preset superheat settings and are
not field--adjustable.
Cabinet Sweating
If this unit is installed in a garage, attic, or other
unconditioned space, special attention needs to be given to
the potential of cabinet sweating. A 6 inch (152 mm) wide
piece of insulation should be wrapped around the coil
casing and supply duct connection point.
Condensate Management
With proper installation, these coils will manage the
condensate without blow--off into the duct work. The 60 size
coil requires the addition of a pan extension for both horizontal
left and horizontal right position, which is supplied with the
coils. See detailed instructions for more info. Also, refer to
Connect Condensate Drain Line section of this instruction.
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
When installing over a finished ceiling and/or living area,
install a field--fabricated secondary condensate pan
under the entire unit.
CAUTION
!
HORIZONTAL--RIGHT AND
HORIZONTAL--LEFT WITH PAN EXTENSION
(5 Ton Size Only)
1. There are two separate pan extensions shipped with
the unit. For horizontal left installations, use the pan
attached to the left shipping bracket. For horizontal
right installations, use the pan attached to the right
shipping bracket. Be sure to use the correct pan
extension for the application. There should not be any
gaps between the plastic condensate pan and the
pan extension. All condensate should flow from the
pan extension to the plastic condensate pan and not
leak into the coil cabinet or duct.
NOTE
: Discard the pan not used along with both shipping
brackets.
2. For horizontal--left installation, install pan extension
onto left end of horizontal--condensate pan. Pan
extension is slotted to fit onto condensate pan edge
and will extend into supply plenum. See Figure 4.
Supply
Plenum
Condensate Pan
Pan Extension
A06032
Figure 4 -- Horizontal--Left Installation of Pan Extension
3. For horizontal--right installation, install pan extension
onto right end of horizontal--condensate pan. Pan
extension is slotted to fit onto condensate pan edge
and will extend into supply plenum. See Figure 5.
A09084
Figure 5 -- Horizontal--Right Installation of Pan
Extension
Installation Configurations
These units can be installed on a work platform, secured to
roof trusses in the attic, suspended from hangers on floor
joists in the crawl space, or installed on blocks. See proper
section and figures for detailed installation instructions.
NOTE
: Pan extension is needed for both horizontal left and
right applications. DO NOT DISCARD.
FURNACE ATTACHMENT
Attach coil to furnace
The attachment plates (3) and filler plate (1) are packaged
together and placed in the coil carton. Remove these items,
verifying the number of pieces. Use the following procedure
to attach ENH4X horizontal coil to furnace.
NOTE
: Remove shipping brace from both ends of casing
prior to installation. Also remove corrugated shipping block
from inside the right end of casing prior to installation.
1. Three attachment plates are used to attach coil to
furnace. Application determines which end of the coil
will be attached to the furnace.
2. Use self--tapping screws to mount attachment plates
to coil casing. See Figure 6.
