Goodman AVPTC183014, AVPTC313714, AVPTC426014 Installation Manual
AVPTC
AIR HANDLER
INSTALLATION INSTRUCTIONS
© 2011 - 2012 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-346D Date: September 2012
THIS PRODUCT CONTAINS ELECTRONIC COMPONENTS WHICH
REQUIRE A DEFINITE GROUND. PROVISIONS ARE MADE FOR
CONNECTION OF THE GROUND. A DEDICATED GROUND FROM
THE MAIN POWER SUPPLY OR AN EARTH GROUND MUST BE
PROVIDED.
NOTICE
IFA“1F
ENCOUNTEREDONSTARTUP,VERIFYTHATTHEELECTRICHEATER
SWITCHESHAVEBEENSETTOTHEAPPROPRIATEHEATERSIZE
PAGES
AIRFLOWDELIVERY
I
NTRODUCTION
This booklet contains the installation and operating instructions for your air handler. All warnings and precautions within
this booklet must be observed. Improper installation can result in unsatisfactory operation or dangerous conditions and
void the warranty. Read this booklet and any instructions
packaged with accessories prior to installation. Give this booklet to the user and explain its provisions. The user should
retain this booklet for future reference.
NOTE: Upon start up in communicating mode the circuit board
will display a “1 Flash” error code on the diagnostic LED and
an “Ec” HTR TO LARGE error at the communicating display.
This is an indication that the dip switches on the control board
need to be configured in accordance with the Electric Heating Airflow Table on page 13 of this manual. Configuring the
dip switches and resetting power to the unit will clear the
error code.
LASH”ERRORCODEORAN
12
AND
13
FORTHE
DIP
.
“EC”HTRTOOLARGE
ERRORIS
DIP
.SEE
SWITCHSETTINGSANDHEATERKIT
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
NOTE: Discharge body’s static electricity before touching
unit. An electrostatic discharge can adversely affect
electrical components.
Use the following precautions during modular blower installation and servicing to protect the integrated control module
from damage. By putting the modular blower, the control,
and the person at the same electrostatic potential, these steps
will help avoid exposing the integrated control module to electrostatic discharge. This procedure is applicable to both installed and uninstalled (ungrounded) blowers.
1. Disconnect all power to the blower. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic
charge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
modular blower near the control. Any tools held in a
person’s hand during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution
not to recharge your body with static electricity; (i.e., do
not move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an ungrounded
object, repeat step 2 before touching control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a blower. Return any old or
new controls to their containers before touching any
ungrounded object.
IMPORTANT NOTE TO THE OWNER REGARDING PRODUCT
WARRANTY
Your warranty certificate is supplied as a separate document
with the unit installed by your contractor. Read the limited
warranty certificate carefully to determine what is and is not
covered and keep the warranty certificate in a safe place. If
you are unable to locate the warranty certificate please contact your installing contractor or contact customer service
(877-254-4729) to obtain a copy.
IMPORTANT: To register your Goodman
www.goodmanmfg.com and click “Warranty Registration”.
Complete registration as prompted.
To register your Amana® brand unit, go to www.amanahac.com and click “Warranty Registration”. Complete registration as prompted.
Product limited warranty certificates for models currently in
production can be viewed at www.goodmanmfg.com or
www.amana-hac.com. If your model is not currently in production or does not appear on the website, please contact
your installing contractor or contact customer service (877254-4729) to obtain a copy of your warranty certificate.
Each product overview page contains a Product Warranty
link; by clicking on it you will be able to view the limited warranty coverage for that specific product. To view warranty
registration information, click on the Product Warranty text
on the left navigation panel on the home page of each website. The Online Product Registration pages are located in
this same section.
®
brand unit, go to
C
HECKING PRODUCT RECEIVED
Upon receiving the unit, inspect it for damage from shipment. Claims for damage, either shipping or concealed,
should be filed immediately with the shipping company.
Check the unit model number, specifications, electrical characteristics and accessories to determine if they are correct.
In the event an incorrect unit is shipped, it must be returned
to the supplier and must NOT be installed. The manufacturer assumes no responsibility for installation of incorrectly
shipped units.
R
EPLACEMENT PARTS
ORDERING PARTS
When reporting shortages or damages, or ordering repair
parts, give the complete unit model and serial numbers as
stamped on the unit’s nameplate.
Replacement parts for this appliance 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:
CONSUMER AFFAIRS
GOODMAN MANUFACTURING COMPANY, L.P.
7401 SECURITY WAY
HOUSTON, TEXAS 77040
877-254-4729
I
MPORTANT SAFETY INSTRUCTIONS
To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
uni nt e r r u pted, un brok e n
electrical ground circuit may consist of an
appropriately sized electrical wire connecting the
ground lug in the unit control box to the building
electrical service panel.
Othe r me th o ds of groundi ng are permi t te d i f pe r fo rm ed
in accordance with the National Electric Code
(NEC)/Amer ican Natio nal Standards Inst itute
(ANSI)/Nati onal Fire Protec tion A ssocia tion (NFPA) 70
and local/state codes. In Canada, electrical grounding
is to be in ac corda n ce with t h e Canadia n El ectri c Code
(CSA) C22.1.
This product is factor y-shipped for use with
208/240/1/60 elec tric al pow er supp ly.
reconfigure th is ai r handler to operate with any other
power supply.
When installing or servicing this equipment, safety
clothing, inc lu ding hand and eye protection, is
strongly reco mmended. If installing in an area that has
special safety requirements (hard hats, etc.), observe
these req uirements.
elec trical ground. The
DO NOT
RECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELS
The following symbols and labels are used throughout this
manual to indicate immediate or potential hazards. It is the
owner’s responsibility to read and comply with all safety information and instructions accompanying these symbols.
Failure to heed safety information increases the risk of property damage, product damage, personal injury or death.
WARNING
HIGHVOLTAGE!
D
ISCONNECT
ULTIPLEPOWERSOURCESMAYBEPRESENT
M
TODOSOMAYCAUSEPROPERTYDAMAGE,PERSONAL
INJURYORDEATH
ONLY
ECHNICIAN
T
ONDITIONING
C
USETHISINFORMATION
WITHOUTSUCHBACKGROUNDMAYRESULTINPRODUCTDAMAGE
PERSONALINJURY,ORDEATH
ALL
POWERBEFORESERVICING
.
.F
AILURE
.
WARNING
INDIVIDUALSMEETINGTHEREQUIREMENTSOFAN
”,ATA
MINIMUM,ASSPECIFIEDBYTHEAIR
,H
EATINGANDREFRIGERATIONINSTITUTE
.A
TTEMPTINGTOINSTALLORREPA IRTHISUNIT
.
“E
(AHRI)
NTRYLEVEL
MAY
,
Do not connect to or use a ny dev ice that i s not designcertified by Goodman for use with this unit. Serious
property damage, personal injury, reduced unit
performance and/or hazardous conditions may result
from the use of such non-ap proved devices.
To prevent the risk of p roperty d amage, personal
injury, or death, do not stor e co mbustible materials or
use gasoline or other f lammable liquids or vapors in
the vicinity of this un it.
2
CARBON MONOX IDE POISON ING HAZ ARD
Special Warning for Installation of Furnace or Air Handling Units in
Enclosed Areas such as Garages, Utility Rooms or Parking Areas
Carbon monoxide producing devices (such as an automobile, space
heater, gas water heater, etc.) should not be operated in enclosed areas
such as unventilated garages, utility rooms or parking areas because of
the danger of carbon monoxide (CO) poisoning resulting from the exhaust
emissions. If a furnace or air handler is installed in an enclosed area such
as a garage, utility room or parking area and a carbon monoxide producing
device is operated therein, there must be adequate, direct outside
ventilation.
This ventilation is necessary to avoid the danger of CO poisoning which
can occur if a carbon monoxide producing device continues to operate in
the enclosed area. Carbon monoxide emissions can be (re)circulated
throughout the structure if the furnace or air handler is operating in any
mode.
CO can cause serious illness including permanent brain damage or death.
C
ODES
& R
EGULATIONS
B10259-216
-
This product is designed and manufactured to comply with
national codes. Installation in accordance with such codes
and/or prevailing local codes/regulations is the responsibility of the installer. The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations.
The United States Environmental Protection Agency
(EPA) has issued various regulations regarding the introduction and disposal of refrigerants. Failure to follow these regulations may harm the environment and
can lead to the imposition of substantial fines. Should
you have any questions please contact the local office of the
EPA.
If replacing an air handler, the system must be manufacturer approved and Air Conditioning, Heating and Refrigera-
tion Institute (AHRI) matched. NOTE: Installation of un-
matched systems is strongly discouraged.
F
EATURES
This air handler is a part of the ComfortNet™ family of products. It may be installed as part of a “non-communicating”
system using a standard 24 VAC thermostat. However, with
the CTK0*AA ComfortNet thermostat kit, this air handler may
be installed as part of a digitally communicating system. The
ComfortNet system provides automatic airflow configuration,
enhanced setup features, and enhanced diagnostics. It also
reduces the number of thermostat wires to a maximum of
four and a minimum of two.
PRE-I
NSTALLATION INSTRUCTIONS
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.
L
OCATION
NOTE: Air handlers are designed for indoor installation
only.
Give special consideration to minimizing the length of refrigerant tubing when installing air handlers. Refer to Remote
Cooling/Heat Pump Service Manual TP-107 Long Line Set
Application R-410A for guidelines. The unit clearance from
a combustible surface may be 0". However, service clearance is to take precedence. In addition allow a minimum of
24" in front of the unit for service clearance.
If the unit is located in an area with high ambient temperature and/or high humidity, the air handler may be subject to
nuisance sweating of the casing. On these installations, a
wrap of 2” fiberglass insulation with a vapor barrier is recommended.
Do not install the air handler in a location that violates the
instructions provided with the condenser.
Consult all appropriate regulatory codes prior to determining final clearances. When installing this unit in an area that
may become wet, 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.
D
UCTWORK
This air handler is designed for a complete supply and return ductwork system.
Do not operate this pro duct without all the duct work
attached.
To ensure correct system performance, the ductwork is to
be sized to accommodate 375-425 CFM per ton of cooling
with the static pressure not to exceed .5" WC. Inadequate
duct work that restricts airflow can result in improper performance and compressor or heater failure. Ductwork is to be
constructed in a manner that limits restrictions and maintains suitable air velocity. Ductwork is to be sealed to the
unit in a manner that will prevent leakage.
RETURN DUCTWORK
DO NOT TERMINATE THE RETURN DUCTWORK IN AN
AREA THAT CAN INTRODUCE TOXIC, OR OBJECTIONABLE FUMES/ODORS INTO THE DUCTWORK. The return ductwork is to be introduced into the air handler bottom
(upflow configuration).
3
RETURN AIR FILTERS
Each installation must include a return air filter. This filtering
may be performed at the air handler or externally such as a
return air filter grille. Air handlers mounted in the downflow
orientation, including “B” series, require external filtering. A
washable filter is available as an accessory. To ensure optimum performance frequent filter cleaning is advised. Refer
to Air Filter Accessory table for the appropriate filter.
AVPTC Filter Number Qty Required
1830
3137
4260
E
LECTRIC HEAT
Refer to this manual in combination with the instructions provided with the heat kit for the correct installation procedure.
The air handlers listed in this manual do not have factory
installed electric heat. Electric heat is available as an ac-
cessory. If installing this option, the ONLY heat kits that can
be used are the HKR series.
NOTE: The Amana
are NOT approved for use with these air handlers.
FIL 36-42
(19" x 21")
FIL 48-61
(21-1/2" x 23")
Air Filter Accessories
®
brand EHK, ECB, EDB, and EDK kits
1
1
HKR INSTALLATION
Follow instructions listed in Installation and Operating Instructions shipped with the heat kit.
E
LECTRICAL SUPPLY WIRE AND
FIRE HAZARD!
To avoid the risk of property damage, personal injury
or fire, use only copper conductors.
MOP
HIGH VOLTAGE!
T o avoid prope rty dama ge , persona l injury or death
due to el ect rical shock, th is u ni t MU S T have an
uninterrupted, unbroken
electrical ground circuit may consist of an
appro pri at ely sized elec tr ical wi re co nnecting the
ground lug in the unit control box to the building
electrical service panel.
Other methods of grounding are permit ted if perform ed
in accordance with the National Electric Code
(NEC) /Americ an Nation al Standar ds Institut e
(ANSI)/National Fire Protection Association (NFP A) 70
and local/state codes. In Canada, electrical grounding
is to be in ac co rda nce w ith th e C ana dian Elec tric Cod e
(CSA) C22.1.
electrical ground. The
BUILDING ELECTRICAL SERVICE INSPECTION
This unit is designed for single-phase electrical supply. DO
NOT OPERATE ON A THREE-PHASE POWER SUPPLY.
Measure the power supply to the unit. The supply voltage
must be in agreement with the unit nameplate power re-
quirements and within the range specified below.
Power Supply V oltage
Nominal Input Minimum Voltage Maximum Voltage
208/240 187 253
WIRE SIZING
Wire size is important to the operation of your equipment.
Use the following check list when selecting the appropriate
wire size for your unit.
• Wire size must carry the Minimum Circuit Ampac-
ity (MCA).
• Refer to the NEC (USA) or CSA (Canada) for wire
sizing. The unit MCA for the air handler and the optional electric heat kit can be found on the unit Series
and Rating Plate.
• Wire size allows for no more than a 2% voltage
drop from the building breaker/fuse panel to the
unit.
HIGH VOLTAGE!
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal in jury or de ath.
Refer to the latest edition of the National Electric Code
or in Canada the Canadian Electric Code when determining the correct wire size. The following table shows
the current carrying capabilities for copper conductors
rated at 75oC with a 2% voltage drop. Use the table
below to determine the voltage drop per foot of various conductors.
4
Maximum Allowable Length in Feet
to Limit Voltage Drop to 2%*
Wire Size
(AWG)
14 75 50 37 NR NR NR NR NR
12 118795947NRNRNRNR
10 188 125 95 75 63 54 NR NR
8 301 201 150 120 100 86 75 68
6 471 314 235 188 157 134 118 110
*Based on NEC 1996
Minimum Circuit Ampacity (MCA)
10 15 20 25 30 35 40 45
MAXIMUM OVERCURRENT PROTECTION (MOP)
Every installation must include an NEC (USA) or CEC
(Canada) approved overcurrent protection device. Also,
check with local or state codes for any special regional requirements.
Protection can be in the form of fusing or HACR style circuit
breakers. The Series and Rating Plate can be used as a
guide for selecting the MAXIMUM overcurrent device.
NOTE: Fuses or circuit breakers are to be sized larger than
the equipment MCA but not to exceed the MOP.
E
LECTRICAL CONNECTIONS
Consult the local power company and local codes before
installing this unit. All wiring must be in accordance with the
National Electrical Code as well as all local codes. Knockouts have been provided on side and top of the cabinet for
the installation of the electrical conduit. If the knockouts on
the cabinet sides are used for electrical conduit, an adapter
ring must be used in order to meet UL1995 safety requirements. Use Minimum Circuit Ampacity and type of wire to
determine proper wire size. The unit MUST be properly
grounded. A ground lug is provided in the unit.
Check all factory connections before connecting electrical
power to unit to ensure none were loosened or disconnected
during shipping and handling.
WARNING
HIGHVOLTAGE!
TO
PREVENTPERSONALINJURYORDEATHDUETO
ELECTRICALSHOCK,DISCONNECTTHEELECTRICAL
POWERBEFOREELECTRICALLYCONNECTINGTHEUNIT
WARNING
TO
AVOIDTHERISKOFFIREOREQUIPMENTDAMAGE,USECOPPER
CONDU CTORS
.
CAUTION
TO
AVOIDTHERISKOFPERSONALINJURY,WIRINGTOTHEUNITMUST
BEPROPERLYPOLARIZEDANDGROUNDED
.
.
WARNING
ALL
WIRINGMUSTCOMPLYWITHAPPLICABLELOCALANDNATIONAL
CODES
.T
YPEANDLOCATIONOFFUSEDDISCONNECTSWITCH(ES)MUST
COMPLYWITHALLAPPLICABLECODESANDPROVIDEOVERCURRENT
PROTECTIONASSHOWNONTHENAMEPLATE
.
208/230 VOLT LINE CONNECTIONS
If heater kits will not be installed, remove the proper size
knockout for the electrical conduit connection. Connect electrical conduit to the unit using two washers to make an approved connection.
The power supply wires must be connected to the red and
black power wiring. Two wire nuts are provided in the bag
assembly for this connection. Wrap the wire nuts with electrical tape. (Insulated crimp type connectors, field supplied,
may be substituted for the wire nuts and electrical tape provided proper size connectors are used.) A ground wire MUST
be connected to the ground lug inside the unit.
AIR HANDLER ONLY (NON-HEAT KIT MODELS)
The building supply connects to the stripped black and red
wires contained in the air handler electrical compartment cavity. A ground screw is also contained in this area. Attach the
supply wires to the air handler conductors as shown in the
unit wiring diagram using appropriately sized solderless connectors or other NEC or CEC approved means.
AIR HANDLER WITH NON-CIRCUIT BREAKER HEAT KITS
A terminal block is provided with the HKR kit to attach the
power supply and air handler connections. Follow the HKR
Installation Manual and wiring diagram for complete wiring
details.
AIR HANDLER WITH HEAT KITS CONTAINING A CIRCUIT
BREAKER
HKR models with a “C” suffix contain a circuit breaker(s).
The air handler has a plastic cover on the access panel that
will require either one or both sections to be removed to allow the heat kit circuit breaker(s) to be installed. See the
HKR Installation Instructions for further details. The air handler wires and supply wires are installed directly onto the
HKR circuit breaker(s) as shown in the HKR Installation
Manual and wiring diagram.
OPERATION ON 208 VOLT SUPPLY
The unit transformer is factory connected for 240 V operation. If unit is to operate on 208 V, disconnect the red wire
from terminal 3 of the unit transformer and connect them to
terminal 2 of the unit transformer.
LOW VOLTAGE WIRING
Low voltage wiring connections are made at the top of the
cabinet. See the 24 Volt Thermostat Wiring section of this
manual for typical low voltage wiring connections. A minimum 18 AWG wire must be used for installations up to 100
feet.
5
24 VOLT THERMOSTAT WIRING - NON-COMMUNICATING
A
A
THERMOSTAT CONNECTIONS
NOTE: Wire routing must not interfere with the circulator
blower operation or routine maintenance.
The air handler’s integrated control module provides terminals for “Y1” and “Y2” and “W1” and “W2” thermostat connections. This allows the air handler to support the systems
shown in the table below. Refer to the following figures for
typical connections to the integrated control module. Thermostat wiring entrance holes are located in the top of the
blower. Wire routing must not interfere with circulator blower
operation or routine maintenance.
RCG
12RC
RC
Remote Condensing Unit
W/E
W1 W2 Y1 Y2
G
W1 Y
(Single-Stage HP)
Y1
Typical Single-Stage Cool,
O
O
O
Single-Stage Heat
Heat Pump Thermostat
DEHUM
ir Handler
Integrated Control Module
NEU
Dehumidistat
HOT
[Optional]
Typical Single-Stage Heat Pump with Auxiliary/Emergency
Heating
COOLING HEAT PUMP HEATING ELECTRIC HEATING
1-STAGE ------ 1- or 2-STAGE
2-STAGE ------ 1- or 2-STAGE
1-STAGE 1-STAGE -----2-STAGE 2-STAGE -----1-STAGE 1-STAGE 1- or 2-STAGE
2-STAGE 2-STAGE 1- or 2-STAGE
NOTE: A removable plug connector is provided with the
control to make thermostat wire connections. This plug may
be removed, wire connections made to the plug, and
replaced. It is strongly recommended that multiple wires
into a single terminal be twisted together prior to inserting
into the plug connector. Failure to do so may result in
intermittent operation.
Typical Single-Stage Cool,
Single-Stage Heat Thermostat
RCG
12RCG
RC
Remote Condensing Unit
(Single-Stage AC)
W1 Y1
W1 Y1 Y2
W2
Y
Place Jumper Between Y1
and O for Proper
Dehu mid ification Operatio n
and Proper Ramping
Prof ile Operation
Air Handler Integrated
DEHUM
O
NEU
HOT
Control Module
Dehumidistat
[Optional]
______________________________________
RCG
12RC
RC
Remote Condensing Unit
W/E
W2 Y1 Y2
W1 W2 Y1 Y2
G
W1 Y1 Y2
(Two-Stage HP)
Typical Two-Stage Cool,
O
O
O
Two-Stage Heat
Heat Pump Thermostat
DEHUM
Integrated Control Module
NEU
HOT
ir Handler
Dehumidistat
[Optional]
Typical Two Stage Heat Pump heating and Auxiliary/
Emergency Heating
24 VOLT DEHUMIDISTAT WIRING - NON-COMMUNICATING
THERMOSTAT CONNECTIONS
The optional usage of a dehumidistat allows the air handler’s
circulator blower to operate at a slightly lower speed during
a combined thermostat call for cooling and dehumidistat call
for dehumidification. This lower blower speed enhances dehumidification of the conditioned air as it passes through the
AC coil. For proper function, a dehumidistat applied to this
air handler must operate on 24 VAC and utilize a switch which
opens on humidity rise.
To install/connect a dehumidistat:
1. Turn OFF power to air handler.
Typical Single-Stage Cooling with Single-Stage Heating
______________________________________
2. Secure the dehumidistat neutral wire (typically the white
lead) to the screw terminal marked “DEHUM” on the air
handler’s integrated control module.
Typical Two-Stage Cool,
Two-Stage Heat Thermostat
RCG
W1 W2 Y1 Y2
Place Jumper Between Y1
and O for Proper
Dehumidification Operation
and Proper Ramping
Profile Operat ion
3. Secure the dehumidistat hot wire (typically the black
lead) to the screw terminal marked “R” on the air
handler’s integrated control module.
4. Secure the dehumidistat ground wire (typically the green
Air Handler I ntegrate d
12RCG
RC
Remote Condensing Unit
W1 W2 Y1 Y2
Y1 Y2
(Two-Stage AC)
DEHUM
O
NEU
HOT
Control Module
Dehumidistat
[Optional]
Typical Two-Stage Cooling with Two-Stage Heating
lead) to the ground screw on the air handler. NOTE:
Ground wire may not be present on all dehumidistats.
5. Turn ON power to air handler.
6
To enable the dehumidification function, move the dehumidification dipswitch from OFF to ON. See following figure.
S7
S8
ONOFF
IMPORTANT NOTE: Sensing bulbs are not permanently
installed at the factory to prevent accidental damage
during brazing. Be sure to follow this checklist step-bystep to ensure the sensing bulb is not damaged during
installation.
Move to the ON
position to enable
dehumidification
Dipswitches - Dehumidification Enable
R
EFRIGERANT LINES
This product is factory-shipped under pressure. Follow
these instructions to prevent injury.
DEHUM
Unused
A qu en c hin g c lo th is st ro ng ly recommended to prev ent
scorching or marring of the eq uipm en t finis h whe n
welding clo s e t o the paint ed surfaces . Us e bra z ing
alloy of 5% minimum silver content.
TUBING PREPARATION
All cut ends are to be round, burr free, and clean.
Failure to follow this practice increases the chances
for refrigerant leaks. The suction line is spun closed
and requires pipe cutters to remove the closed end.
POST BRAZING
Quench all welded joints with water or a wet rag.
1. Loosen the 13/16 nut 1 TURN ONLY. No pressure loss
indicates possible leak.
2. Remove the nut and discard the cap.
3. Follow the instructions on the caution label, and remove
the two mounting screws on the lower access panel.
Then remove the lower access panel.
4. Remove the large front panel and remove the sensing
bulb from suction manifold. TO PREVENT DAMAGE
TO SENSING BULB, ENSURE BULB IS NOT NEAR
FLAME OR IN CONTACT WITH SUCTION LINE OR
MANIFOLD DURING BRAZING.
5. Use a tube cutter to remove the spin closure on the
suction line.
Excessive torque can cause orifices to stick. Use the
proper torque settings when tightening orifices.
6. Replace sensing bulb to horizontal portion of suction
line just inside cabinet. Place bulb parallel with suction
line between 10 o’clock and 2 o’clock position. Secure
bulb to line with strapping provided in literature envelope. Insulate sensing bulb to line with self-adhesive
insulation provided in the envelope. See the following
figures for correct bulb placement and strapping information.
PIPING SIZE
For the correct tubing size, follow the specification for
the condenser/heat pump.
SPECIAL INSTRUCTIONS
This coil comes equipped with a thermostatic expansion
valve (TXV) for refrigerant management.
IMPORTANT NOTE: Torch heat required to braze tubes of
various sizes is proportional to the size of the tube. Tubes of
smaller size require less heat to bring the tube to brazing
temperature before adding brazing alloy. Applying too much
heat to any tube can melt the tube. Service personnel must
use the appropriate heat level for the size of the tube being
brazed.
NOTE: The use of a heat shield when brazing is
recommended to avoid burning the serial plate or the finish
on the unit. HEAT TRAP OR WET RAGS SHOULD BE
USED TO PROTECT HEAT SENSITIVE COMPONENTS
SUCH AS SERVICE VALVES AND TXV VALVES.
REFRIGERANT BULB
MUST BE POSITIONED
BETWE EN 10 & 2 O’CLOCK
REFRIGERANT BULB
MUST BE POSITIONED
BETWEEN 10 & 2 O’CLOCK
NOTE: The sensing bulb must be permanently located. A
heat shield, heat trap, or wet rag must be used during brazing to prevent damage to the TXV valve.
7
7. Replace access panels, suction line grommet, insulation and all screws.
SUCTION LINE
WITH SPIN CLOSURE
RUBBER
GROMM ET
Suction Line Grommet
A
IRFLOW CONVERSIONS
DOWNFLOW CONVERSION
Conversion to downflow MUST be performed in an area that
allows access to all sides prior to placing the air handler in
its final location. To prevent the evaporator coil pan from
“sweating”, a drain pan insulation (DPI) accessory kit is to
be used when performing this conversion. NOTE: The DPI
kit is not supplied with this product and is to be purchased
separately. See the following Drain Pan Insulation Kit table
for the correct DPI kit.
AVPTC Model Insulation Kit
RETURN AIR SIDE
OF UNIT
ACCESS
PAN EL
NOTE: The filter provision is not applicable
in THIS downf low application.
Downflow Conversion - Conversion Preparation
REAR CHANNEL
BRACKET
ZEE COIL
SUPPORT BRACKET
COIL RETAINING
BRACKET
TIE BRACKET
7. Install the zee coil supports and the wrapper stiffeners.
8. Install the tie bracket.
9. Install the rear channel bracket.
10. To prevent possible condensate “blow off” the insulation retainers are to be laid into the evaporator coil pan
as shown.
1830 DPI36-42/20
3137
4260
Drain Pan Insulation Kits
DPI48-61/-20
Refer to Figures Downflow Conversion - Conversion Prepa-
ration, Downflow Conversion - Insulation Retainers, and
Downflow Conversion - Conversion Completion for the lo-
cation of the components referenced in the following steps.
Figure Downflow Conversion - Conversion Preparation il-
lustrates the new installation location for the removed components.
1. Before inverting the air handler, remove all access panels, the coil rear channel bracket, and the filter closeoff panel.
2. Remove the evaporator coil and the horizontal drain
pan. Discard horizontal drain pan.
3. Install the provided plastic plug into the vacated access panel.
4. Remove the two (2) zee coil support brackets and insulation retaining brackets.
3” FLAT INSULATION
RETAINER (BOTH SIDES)
Downflow Conversion - Insulation Retainers
To complete the conversion, slide the evaporator coil into
the chassis and attach the three (3) access panels.
5. Remove the tie bracket.
6. Install the DPI Insulation Kit onto the bottom of the drain
pan.
8
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