Table of Contents
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1. INSTALLATION
Units are approved for closet or alcove installa-
tion with zero clearance to combustibles. Units
are designed to be installed either recessed into
a wall or hanging in a vertical "upfl ow" position.
If units are recessed in a wall, attachment to
the framing studs are through the inside of the
front fl ange. Air handlers are provided with an
offset hanging bracket attached to the rear of
the cabinet for hanging applications.
Units have a bottom and/or front return. Units
are shipped for installation in a front return
application. Front close-off panel (if supplied)
may be discarded. If installed in a bottom re-
turn application, attach bottom access to the
front of the unit below the top service panel or
close-off panel.
Units are equipped with primary and secondary
drains and both drains must be trapped. Failure
to install a trap could result in condensation
overfl owing the drain pan resulting in substantial
water damage to the nearby area.
Note: If you intend to install this unit with a
louvered door the unit must be mounted fl ush
or behind front edge of fi nished wall.
2. VERIFY PRESSURIZATION
WARNING:
This coil is pressurized with Nitrogen.
Avoid direct face exposure or contact
with valve when gas is escaping. Al-
ways ensure adequate ventilation is
present during the depressurization
process. Any uncertainties should be
addressed before proceeding.
VERIFY PRESSURIZATION:
-
Test by depressing Schrader valve and listen
for escaping gas
NITROGEN
1
HEALTH
0
FLAMMABILITY
0
REACTIVITY
0 Minimal Hazard
1 Slight Hazard
-
If no pressure is found, test coil for leak
- If no leak is found, install coil
- If leak is found, clearly mark leak
location and return coil to your distributor
for processing
3. REFRIGERANT LINE
CONNECTIONS
Note: Do not remove seals from the coil until
tubing connections are ready to be made.
Note: The air handler coil does not contain
a refrigerant charge. Reference installation
instructions included with outdoor unit for
information regarding the refrigerant charge
included in the outdoor unit.
WARNING:
This coil is pressurized with Nitrogen.
Avoid direct face exposure or contact
with valve when gas is escaping. Al-
ways ensure adequate ventilation is
present during the depressurization
process. Any uncertainties should be
addressed before proceeding.
1.
Remove cap from Schrader valve on liquid
line. Relieve all pressure from the coil by
depressing the valve on the end of the
liquid line. Remove the valve core. Properly
dispose of all removed parts.
2.
Loosen the distributor body halves by
applying two wrenches and turning the
assembly nut counterclockwise.
3.
When separated insert a light-gauge wire
hook between the distributor body and the
restrictor orifi ce and carefully remove the
restrictor orifi ce being careful not to scratch
either part.
4.
Insert the new restrictor orifi ce in the
distributor body.
5.
After installing the orifi ce in the distributor
body, re-attach the assembly nut to the
NITROGEN
1
HEALTH
0
FLAMMABILITY
0
REACTIVITY
0 Minimal Hazard
1 Slight Hazard
3
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