NOTE:
THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED
SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT
AND OPERATION OF THIS EQUIPMENT. READ THE ENTIRE
INSTRUCTION MANUAL THOROUGHLY BEFORE ATTEMPTING
INSTALLATION OR OPERATION.
1
1
Page 2
RECOGNIZE SAFETY SYMBOLS, WORDS
AND LABELS
hat You Need To Know About Safety Instructions
W
Warning and Important Safety Instructions appearing in this
manual are not meant to cover all possible conditions and
situations that may occur. Common sense, caution and care
must be exercised when operating or cleaning tools and
equipment.
lways contact your dealer, distributor, service agent or
A
manufacturer about problems or conditions you do not
understand.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
DANGER
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury.
CAUTION
CAUTION used without the safety alert symbol
indicates a potentially hazardous situation which, if not
avoided, may result in property damage.
WARNING
MPROPER INSTALLATION, ADJUSTMENT,
I
ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE
INJURY, PROPERTY DAMAGE OR LOSS OF LIFE. READ
THIS MANUAL COMPLETELY BEFORE BEGINNING ANY
WORK AND FOLLOW ALL SAFETY PRECAUTIONS.
AQUALIFIED INSTALLER MUST PERFORM
INSTALLATION AND SERVICE.
DO NOT DESTROY THIS MANUAL. PLEASE READ
CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE
REFERENCE BY A SERVICE TECHNICIAN.
THESE INSTRUCTIONS ARE INTENDED AS AN AID TO
QUALIFIED SERVICE PERSONNEL FOR PROPER
INSTALLATION, ADJUSTMENT AND OPERATION OF
THIS COMPONENT. READ THESE INSTRUCTIONS
THOROUGHLY BEFORE ATTEMPTING INSTALLATION
OR OPERATION. FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY RESULT IN IMPROPER
INSTALLATION, ADJUSTMENT, SERVICE OR
MAINTENANCE, POSSIBLY RESULTING IN FIRE,
ELECTRICAL SHOCK, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
BEFORE PERFORMING ANY WORK ON THIS
EQUIPMENT, POWER SUPPLY MUST BE TURNED OFF AT
THE HOUSEHOLD SERVICE BOX TO AVOID THE
POSSIBILITY OF SHOCK, INJURY, DAMAGE TO
EQUIPMENT, OR DEATH.
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS AND LIQUIDS, OR OTHER
COMBUSTIBLE MATERIALS IN THE VICINITY OF THIS
COIL OR ANY OF ITS MATCHING SYSTEM
COMPONENTS (CONDENSING UNIT, HEAT PUMP, OR
FURNACE).
NOTES TO INSTALLER
The words “SHALL” and “MUST” indicate a requirement
which is essential to satisfactory and safe product
performance. The words “SHOULD” and “MAY” indicate a
recommendation or advice which is not essential and not
required but which may be useful or helpful.
Installation and service personnel are required by some
locales to be licensed. Persons not qualified SHALL NOT install
this equipment nor interpret these instructions.
This installation and maintenance manual is provided to
ensure the proper installation and the most satisfactory
performance of the equipment. The instructions contained
herein SHALL NOT be deemed to extend, modify, alter or
expand any of the representations contained in the limited
warranty.
2
Page 3
INTRODUCTION
Return
R
eturn
Supply
Supply
Downflow
F
urnace
Evaporator
Coil
Evaporator
C
oil
Upflow
Furnace
8o’cl
4 o’clock8 o’clock
his manual is intended as an aid to qualified HVAC installers
T
uring the installation of Fedders Cased Coils on upflow or
d
downflow furnaces. Do not install coil in horizontal position
(see illustration below).
INSPECTION AND UNPACKING
A thorough inspection of the shipping container should be
made immediately upon receiving your unit. Look for any
punctures or openings, and if it appears damage has
occurred, it should be noted on the freight bill before signing.
The delivering carrier should be contacted immediately to
inspect damage, and no installation work should begin until
this inspection is completed.
nstallation of Evaporator Coils
I
he cased coil is designed to fit Fedders furnaces the same
T
width.
1. Set coil on upflow furnace discharge air opening.
2. Ensure coil is level for proper condensate drainage.
o not tip coil toward condensate drain.
D
3. When installing wider coil on narrow furnace, use a
field supplied adapter.
4. When installing narrow coil on wide furnace, create
ield fabricated adapter. Consult your dealer for
f
lternate installation instructions.
a
NOTE: In downflow position installation with Fedders
furnace, break off perforated duct flange on coil/furnace.
Connect Refrigerant Piping
Use field supplied tubing of refrigerant grade. Suction tube
must be insulated. Do not use damaged, dirty, or
contaminated tubing because it may plug refrigerant flow
control device. ALWAYS evacuate the coil and field supplied
tubing before opening outdoor unit service valves.
Factory and Field-Installed Expansion Valves
1. The bulb and capillary tubing should be routed outside
of the case. Make sure the capillary tube will not
contact any sharp edges of the case. On factory
installed expansion valves, the adjustable sensing bulb
is not permanently installed onto the coils’ vapor line in
order to allow easy removal during installation.
Sensing bulb
attached with
clamps
INSTALLATION
Codes
The installer
codes and/or regulations pertaining to this type of
equipment and its installation. Such codes and/or regulations
should take precedence over any recommendations
contained herein. Installations SHALL be made in accordance
with the National Electrical Code, local codes and
recommendations made by the National Board of Fire
Underwriters. Consult local building codes and National
Electrical Code (NEC) for special requirements.
EXTERIOR SURFACE COIL HOUSING MAY SWEAT WHEN
UNIT IS INST
AS AN ATTIC OR GARAGE. THE INSTALLER MUST
INSULATE THE CABINET WITH 1” FIBERGLASS
INSULA
SHALL comply with all local, state, and federal
CAUTION
ALLED IN NON-CONDITIONED SPACE SUCH
TION.
Vapor line
Attach bulb to
vapor line at four
or eight o’clock
position
CAUTION
THE TXV SENSING BULB CAN BE DAMAGED BY
EXTREME HEAT FROM BRAZING. THE BULB SHOULD
BE REMOVED BEFORE PERFORMING ANY BRAZING
PROCEDURE AND NOT INSTALLED UNTIL AFTER THE
VAPOR AND LIQUID LINES ARE BRAZED AND LEAK
CHECKED.
CAUTION
THE TXV VALVE CAN BE DAMAGED BY EXTREME
HEAT. PROPER PRECAUTIONS SHOULD BE TAKEN TO
AVOID OVERHEATING THE TXV VALVE AND CAUSING
DAMAGE TO THE INTERNAL COMPONENTS.
3
Page 4
Factory and Field-Installed Expansion Valves (cont.)
U
NIT
F
LEXIBLE
T
UBING-HOSE
O
R PIPE
DRAIN
CONNECTION
A POSITIVE LIQUID
SEAL IS REQUIRED
2” MINIMUM
3” MINIMUM
2. To assure accurate sensing and the best performance,
the bulb should be placed on the upper half of the
vapor line at the four or eight o’clock position and at
least 6” from the coil manifold.
ARNING
W
LWAYS HAVE A FIRE EXTINGUISHER AVAILABLE
A
HEN WORKING WITH AN OPEN FLAME.
W
ALWAYS USE SAFETY GLASSES, PROTECTIVE
CLOTHING, AND WORK GLOVES.
ondensate Drain Plumbing
C
Coils are provided with two 3/4” female pipe drain fittings,
and an emergency drain fitting. Do not over tighten these
fittings; it could result in damage to the drain pan.
WARNING
For downflow, or any installation where condensate
overflow could create a hazard or water damage, the
emergency drain fitting MUST be used. The emergency
drain MUST be left open. If the emergency drain has to be
piped away from the air handler, its outlet MUST be
installed in a location that would allow any drainage to be
immediately noticed.
Install condensate drain trap as close to the coil as possible.
Use drain connection size or larger. Do not operate unit
without trap (see illustration below). Unit must be level or
slightly inclined toward drain.
Condensate drain trap
TXV valve can be accessed
through the valve cover-plate
on the front of the casing.
3. Attach the bulb securely with the copper strap
provided.
4. Insulate the bulb thoroughly with a suitable insulation
material such as cork tape.
5. Coils with TXVs should be charged 10-12 degrees
(+ or – one degree) of sub-cooling. This supercedes any
subcooling value listed with condensing unit’s
literature.
For the majority of installations no adjustment to the
TXV setting is required. However
, if the measured
superheat is less than 4° or greater than 8° an
adjustment is required. The adjustment stem is at the
base of the valve under the flare nut. To increase
superheat, tighten the stem clockwise and to decrease
superheat, back-out the stem counter-clockwise. Use a
1/4” refrigeration service wrench for this function.
NOTE: When r
eclaim pr
r
ocedures.
emoving r
efrigerant, always use standar
d
Heat Exchanger Clearance
For gas furnace applications, refer to furnace installation
instructions for proper heat exchanger clearance.
CAUTION
1. Do not connect the drain line to a closed sewer.
2. Never terminate an open sewer or drain connection
within the return air duct, platform, or return plenum.
3. Pitch the drain line at least 1/4” per foot away from the
drain pan.
4. If condensate drain connection is on the negative side of
the blower, a trap must be installed to ensure positive
drainage.
Condensate drain lines should not be reduced in size
5.
from the connection size supplied.
The drain line should be insulated where necessary
6.
prevent sweating and damage due to condensate
forming on the outside surface of the line.
est condensate drain line with water before operating
7. T
system.
8. If unit is located in or above a living space where
damage may result from condensate overflow, a field
supplied, external condensate pan should be installed
under the entire unit, and a secondary condensate line
(with appropriate trap) should be run from the unit into
the pan. Any condensate in this external condensate pan
should be drained to a noticeable place. As an
alternative to using an external condensate pan, some
localities may allow the running of a separate 3/4 inch
condensate line (with appropriate trap) per local code to
a place where the condensate will be noticeable.
, to
4
Page 5
CHECK AND ADJUST AIRFLOW
Check that the correct amount of air is flowing through the
oil by measuring the pressure drop using an air flow gauge.
c
hecking Static Drop Across Coil
C
. The coil should be dry and clean. The air filter must be
1
lean and all registers open. Do not run the condensing
c
unit when checking air flow.
2. Run the Blower on cooling speed.
3. Set the blower motor speed-belt drive or direct drive to
the nominal CFM required across coil and the dry coil
static reading. See chart below.
If gauge reading is below the required pressure, increase
blower speed until reading is the same or slightly above the
required pressure.
If the gauge reading is above required pressure, decrease the
blower speed.
Refer to instructions included with your furnace or blower for
directions on changing blower speed.
NOTE: You may not be able to obtain a gauge reading exactly
the same as the required pressure due to variations in duct
systems and blower speeds.
A slightly high reading is acceptable.
A low reading will indicate conditions that could cause a
freeze up. This will shorten compressor life. Too much air will
result in poor humidity control and overheating of the
compressor. It may cause tripping of the compressor overload.
If you are using a belt driven blower, use an ammeter to check
the motor current draw
motor name plate amps, replace the motor with one with
greater horsepower
. If the current draw is higher than the
.
THROUGH DRY COIL* & HOUSING (INCHES WATER COLUMN / CFM)
STATIC PRESSURE DROP
* Dry coil static shown. Increase static by 20% for wet coil static.
Fedders will provide a replacement part or component
that proves to be defective in material or workmanship.
ARRANTY LIMITATIONS:
W
• Limited Warranty does not include allowances for labor
r travel expense connected with the installation of
o
arts, so furnished in this Limited Warranty or for field
p
epair, or servicing of the equipment, nor for
r
refrigerant used
• For warranty purposes the purchase date is established
by a proof of purchase. If a proof of purchase can not
be verified, then warranty period will be measured
from the date of manufacture plus 6 months.
• Cost of repair or replacement of consumable parts is
not covered under the terms of this warranty
• Replacement parts are warranted only for the balance
of the original warranty period
• Applies only to original installation and normal use and
service within the 48 contiguous United States, District
of Columbia and Canada
• Applies to service performed by an authorized servicer.
WARRANTY IS VOID IF:
• Serial plate is defaced
• Product has defect or damage due to product
alteration, connection to an improper electrical supply,
shipping and handling, fire, flood, lightning or other
conditions beyond the control of Fedders
• Product is not installed according to Fedders’
instructions and specifications
• Product is operated in a corrosive environment
containing concentrations of corrosive agents causing
deterioration of components
• Product is operated with indoor unit or refrigerant
control device that does not meet Fedders’
specifications
• Product is moved from original installation site
OWNER’S RESPONSIBILITIES:
• Provide proof of purchase (sales receipt)
Provide normal care and maintenance as outlined in
•
installation and operation manual
Make product reasonably accessible for service
•
• Pay for freight, labor and travel expenses
• Pay for premium service costs for service outside
servicer’s normal business hours
• Pay for service calls related to product installation and
maintenance
•
Failure to follow manufacturer’s instructions and rating plate
•
nformation
i
• Accidents or other events beyond Fedders’ control
ENTIRE WARRANTY:
THE ABOVE CONTAINS THE SOLE AND EXCLUSIVE
STATEMENT OF THE EXPRESS WARRANTIES AND
ASSOCIATED REMEDIES AVAILABLE WITH THE
PRODUCTS DESCRIBED. NO OTHER EXPRESS
WARRANTIES ARE MADE. ALL IMPLIED WARRANTIES,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, OR IMPLIED WARRANTIES
OTHERWISE ARISING FROM COURSE OF DEALING OR
USAGE OF TRADE ARE LIMITED IN DURATION TO ONE
YEAR FROM THE DATE OF ORIGINAL PURCHASE. IN NO
EVENT SHALL FEDDERS BE LIABLE FOR ANY INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF
ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH
DAMAGES. NO WARRANTIES, EXPRESS OR IMPLIED,
ARE MADE TO ANY BUYER UPON RESALE.
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG
AN IMPLIED WARRANTY LASTS OR DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS
MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU
SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER
RIGHTS, WHICH MAY VARY FROM STATE TO STATE. NO
WARRANTIES ARE MADE FOR UNITS SOLD OUTSIDE THE
ABOVE STATED AREAS. YOUR DISTRIBUTOR OR FINAL
SELLER MAY PROVIDE A WARRANTY ON UNITS SOLD
OUTSIDE OF THESE AREAS.
7
Page 8
The information in this manual supersedes and replaces the previous instruction/operation manual with regards to Air Handler
products. Illustrations cover the general appearance of the units at the time of publication and the manufacturer reserves the right
to make changes in design and construction at any time without notice.
For replacement parts please, consult the installing dealer or contractor.
Fedders Corporation
505 Martinsville Rd.
Liberty Corner
, NJ 07938
REV. 3/0723-23-0451N-004
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