Goodman AVPTC42D14, AVPTC48D14, AVPTC30C14, AVPTC24B14, AVPTC60D14 Installation Manual
...
AVPTC**14**
®
AIR HANDLERS
INSTALLATION & OPERATING INSTRUCTIONS
1 Important Safety Instructions ....................................................................2
2 Shipping Inspection ..................................................................................2
2.1 Parts ..............................................................................................3
2.2 Handling ........................................................................................3
3 Codes & Regulations................................................................................3
4 Replacement Parts ...................................................................................3
5 Pre-Installation Considerations................................................................3
5.1 Preparation....................................................................................3
5.2 System Matches............................................................................3
5.3 Interconnecting Tubing..................................................................3
5.4 Clearances ....................................................................................3
5.5 Horizontal Applications ..................................................................4
6 Installation Location.................................................................................4
6.1 Upflow Installation .........................................................................4
6.2 Horizontal Left Installation .............................................................4
6.3 Downflow/Horizontal Right Installation ..........................................4
7 Refrigerant Lines ......................................................................................7
7.1 Tubing Size....................................................................................7
7.2 Tubing Preparation........................................................................7
7.3 Tubing Connections for TXV Models.............................................7
8 Condensate Drain Lines ...........................................................................7
9 Ductwork...................................................................................................8
9.1 Return Ductwork ...........................................................................8
10 Return Air Filters .....................................................................................8
11 Electric Heat ...........................................................................................9
12 Electrical and Control Wiring ................................................................10
12.1 Building Electrical Service Inspection .......................................10
12.2 Wire Sizing ................................................................................10
12.3 Maximum Overcurrent Protection (MOP) ..................................10
12.4 Electrical Connections – Supply Voltage...................................10
12.4.1 Air Handler Only (Non-Heat Kit Models) ................................ 11
12.4.2 Air Handler - Non-Circuit Breaker Heat Kits ...........................11
12.4.3 Air Handler With Circuit Breaker Heat Kit...............................11
12.5 Low Voltage Connections..........................................................11
13 Achieving 2% Low Leakage Rate.........................................................11
14 Start-Up Procedure...............................................................................11
15 Regular Maintenance ........................................................................... 11
Circulator Blower..........................................................................................14
Troubleshooting ...........................................................................................18
ComfortNet™ System ..................................................................................19
Start-Up Procedure ......................................................................................21
Regular Maintenance ...................................................................................21
Troubleshooting ...........................................................................................24
Diagnostic Codes .........................................................................................28
Wiring Diagrams ..........................................................................................29
© 2013-2014 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www .goodmanmfg.com - or - www.amana-hac.com
P/N: IO-443D Date: August 2014
RECOGNIZE
THIS SYMBOL AS A
SAFETY PRECAUTION.
ATTENTION
INSTALLING
PERSONNEL
Prior to installation, thoroughly familiarize yourself with this Installation
Manual. Observe all safety warnings.
During installation or repair, caution is
to be observed. It is your responsibility
to install the product safely and to educate the customer on its safe use.
is a registed trademark of Maytag Corporation or its related companies and is used under license to
Goodman Company, L.P., Houston, TX, USA. All rights reserved.
1 Important Safety Instructions
The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It is the
owner’s and installer’s responsibility to read and comply with all safety information and instructions accompanying these
symbols. Failure to heed safety information increases the risk of personal injury, property damage, and/or product damage.
HIGH VOLTAGE!
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or death.
Install ati on an d re pa ir of t hi s u nit sho ul d b e p erform ed
by indiv id uals me et in g the re qui re men ts of an
ONLY
“entry level technician” as specified by
the Ai r-Co ndi ti on in g, H eati ng a nd Re fri g era ti on Inst i tu te
(AHRI). Attempting to install or repair this unit without
such ba ck grou nd may re sul t i n p rod uct da mag e,
personal inju ry or death.
This product is factory-shipped for use with
208/240/1/60 electrical power supply.
reconfigure this air handler to operate with any other
power supply.
To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
uninterrupted, unbroken
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.
Other meth ods of gro unding are permitted if pe rfo rmed
in accordance with the National Electric Code
(NEC)/A mer ican National Stan dard s Inst itut e
(ANSI)/ Nati onal Fire P rotec tion Assoc iation (NFP A) 70
and local /s ta te c ode s. I n Canad a, e lect ri ca l gro unding
is to be in accordance with t he Cana di an El ec tr ic C ode
(CSA) C22.1.
, at a mini mum,
DO NOT
electrical ground. The
Do not connect to or use any device that is 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-approved devices.
T o prev en t th e ri sk of pro perty damage, personal
injury , or dea th, do not store co mb ustible mater ials or
use gasoline or other flammable liquids or vapo rs in
the vicin ity of this uni t.
When installing or servicing this equipment, safety
clothing, including hand and eye protection, is
strongly recommended. If installing in an area that has
special safety requirements (hard hats, etc.), bserve
these requirements.
o
B10259-216
2 Shipping Inspection
Always transport the unit upright; laying the unit on its side or top during transit may cause equipment damage. The installer
should inspect the product upon receipt for shipping damage and subsequent investigation is the responsibility of the carrier.
The installer must verify the model number, specifications, electrical characteristics, and accessories are correct prior to
installation. The distributor or manufacturer will not accept claims from dealers for transportation damage or installation of
incorrectly shipped units.
2
2.1 Parts
Also inspect the unit to verify all required components are present and intact. Report any missing components immediately to Goodman® or to the distributor. Use only factory authorized replacement parts (see Section 5). Make sure to
include the full product model number and serial number when reporting and/or obtaining service parts.
2.2 Handling
Use caution when transporting/carrying the unit. Do not move unit using shipping straps. Do not carry unit with hooks or
sharp objects. The preferred method of carrying the unit after arrival at the job site is to carry via a two-wheel hand truck
from the back or sides or via hand by carrying at the cabinet corners.
3 Codes & Regulations
This product is designed and manufactured to comply with applicable 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 and/or refer to
EPA’s website www.epa.gov.
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:
CONSUMER AFFAIRS
GOODMAN MANUFACTURING COMPANY, L.P.
7401 SECURITY WAY
HOUSTON, TEXAS 77040
(877) 254-4729
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 and will void
the product warranty.
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 appropriate regulatory codes prior to determining final 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.
3
5.5 Horizontal Applications
If installed above a finished living space, a secondary 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.
The AVPTC**14** product line may be installed in one of the upflow, downflow, horizontal left or horizontal right orientations as
shown in Figures 2, 3, 4 and 5. The unit may be installed in upflow or horizontal left orientation as shipped (refer to specific
sections for more information).
Minor field modifications are necessary to convert to downflow or horizontal right as indicated in below sections.
6.1 Upflow Installation
No field modifications are mandatory however to obtain maximum efficiency,
the horizontal drip shield must be removed.
Drip Shield Removal: Refer to Figure 1, remove the two (2) screws that
secure the drip shield support brackets to the condensate collectors (one
screw per side). Remove the two (2) screws that secure the drip shield to the
drain pan. The drip shield and drip shield brackets may now be removed.
The bottom left drain connection is the primary drain for this application and
condensate drain line must be attached to this drain connection. The top
connection of the three drain connections on the drain pan must remain
plugged for this application. The bottom right drain connection is for the secondary drain line (if used).
6.2 Horizontal Left Installation
No field modifications are permissible for this application.
The bottom right drain connection is the
primary drain for this application and
condensate drain line must be attached
to this drain connection. The top connection of the three drain connections
on the drain pan must remain plugged
CMK0001 CMK0002 CMK0003 CMK0007
AVPTC42D14** AVPTC48D14** AVPTC30C14** AVPTC24B14**
MODEL LISTS FOR HORIZONTAL LEFT KITS
AVPTC60D14** AVPTC36C14**
for this application. The bottom left drain
connection is for the secondary drain
line (if used).
Screw
Screw
DRIP SHIELD REMOVAL
Figure 1
AVPTC48C14**
Table 1
Use condensate management kit if equipment is installed in
high humidity condition (for example: 70% or higher).
6.3 Downflow/Horizontal Right Installation
IMPORTANT NOTE: In the downflow application, to prevent
coil pan “sweating”, a downflow kit (DFK) is available through
your local Goodman distributor. The DFK is not supplied with
the air handler and is required by Goodman on all downflow
installations. See Table 2 for the correct DFK and follow the
instructions provided for installation.
Refer to Figure 6 and 7 for the location of the components
MODEL LIST FOR DOWNFLOW KITS
DFK-B
Downflo w Kit
AVPTC24B14** AVPTC30C14** AVPTC42D14**
DFK-C
Downf l o w Ki t
AVPTC36C14** AVPTC48D14**
AVPTC48C14** AVPTC60D14**
DFK-D
Downflo w Kit
DOWNFLOW KIT
Table 2
referenced in the following steps.
1. Before inverting the air handler, remove blower access panel and coil access panel. The coil access panel and tubing
panel may remain screwed together during this procedure. Remove and retain the seven (7) screws securing the coil
access panel to the cabinet and the six (6) screws securing the blower access panel to the cabinet.
2. Slide the coil assembly out using the drain pan to pull the assembly from the cabinet.
NOTE: DO NOT USE MANIFOLDS OR FLOWRATOR TO PULL THE COIL ASSEMBLY OUT. FAILURE TO DO SO
MAY RESULT IN BRAZE JOINT DAMAGE AND LEAKS.
4
3. Removal of the center support is required on units with 21" wide cabinet. Remove and retain the two (2) screws that
secure the center support to the cabinet. Remove the center support.
4. Using the drain pan to hold the coil assembly, slide the coil assembly back into the cabinet on the downflow brackets as
shown in Figure 8.
5. Re-install the center support (if removed) using the two (2) screws removed in Step 4.
6. Re-install the access panels removed in Step 1 as shown in Figure 9.
7. The bottom left drain connection is the primary drain for this application and condensate drain line must be attached to
this drain connection. The top connection of the three drain connections on the drain pan must remain plugged for this
application. The bottom left drain connection is for the secondary drain line (if used).
UPFLOW
Figure 2
HORIZONTAL LEFT
Figure 4
DOWNFLOW
Figure 3
HORIZONTAL RIGHT
Figure 5
NOTE: If removing only the coil access panel from the unit, the filter access panel must be removed first. Failure to do so
may result in panel damage.
5
Upper Tie Plate
Control
Deck
Downflow
Bracket
Center
Support
Filter
Bracket
Filter Acces s
Panel
INTERNAL PART TERMINOLOGY
Figure 6
Blower
Access
Panel
Coil
Access
Panel
Secondary
Drain Port
for Horizontal
Application
Thumb
Screw
Secondary Dra in Port
for Upflow/Downflow
Application
EXTERNAL PART TERMINOLOGY
Figure 7
Tubing
Panel
IMPORTANT NOTE:
Ensure coil slides o n the rails
along the groove provided
on the drain pan side walls.
Failure to do so will resu lt
in improper condensate drainage.
COIL INSTALLATION FOR DOWNFLOW
Figure 8
Coil Slides
on the
downflow bracket
ACCESS PANEL
CONFIGURATION FOR
DOWNFLOW OR
HORIZONTAL RIGHT
Figure 9
6
7 Refrigerant Lines
NOTE: Refrigerant tubing must be routed to allow adequate
access for servicing and maintenance of the unit.
Do not install the air handler in a location that violates the
instructions provided with the condenser. 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 these installations, a wrap of 2"
fiberglass insulation with a vapor barrier is recommended.
7.1 Tubing Size
For the correct tubing size, follow the specification for
the condenser/heat pump.
7.2 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 tubing cutters to remove the closed end.
NOTE: To prevent possible damage to the tubing joints,
do not handle coil assembly with manifold or flowrator
tubes. Always use clean gloves when handling coil assemblies.
NOTE: The use of a heat shield is strongly recommended
when brazing to avoid burning the serial plate or the finish of the unit.
sensitive components such as service valves and TXV valves sensing bulb.
This product is factory-shipped with R410A and dry
nitrogen mixture gas under pressure. Use appropriate
service tools and follow these instructions to prevent
injury .
A quenching cloth is strongly recommended to prevent
scorching or marring of the equipment finish when
brazin g close to the painted surfaces. Use brazing
alloy of 5% minimum silver content.
CAUTION
Applying too muc h heat to any tube can melt the tube. T orc h
heat required to braze tubes of various sizes must be
proportiona l to th e size of th e tube. S er vice p er sonn el m u st
use the appropriate he at level for the size of the tube being
brazed.
Heat trap or wet rags must be used to protect heat
7.3 Tubing Connections for TXV Models
TXV models come with factory installed TXV with the bulb pre-installed on the vapor tube.
1. Remove refrigerant tubing panel or coil (lower) access panel.
2. Remove access valve fitting cap and depress the valve stem in access fitting to release pressure. No pressure indicates possible leak.
3. Replace the refrigerant tubing panel.
4. Remove the spin closure on both the liquid and suction tubes
using a tubing cutter.
REFRIGERANT BULB
MUST BE POSITIONED
BETWEEN 10 & 2 O’CLOCK
REFRIGERANT BULB
MUST BE POSITIONED
BETWEEN 10 & 2 O’CLOCK
5. Insert liquid line set into liquid tube expansion and slide grommet about 18" away from braze joint.
6. Insert suction line set into suction tube expansion and slide insulation and grommet about 18" away from braze joint.
7. Braze joints. Quench all brazed joints with water or a wet rag
upon completion of brazing.
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
SUCTION LINE
WITH SPIN CLOSURE
Figure 10
the TXV valve.
8. Replace access panels, suction line grommet, insulation and all
screws.
RUBBER
GROMMET
8 Condensate Drain Lines
The coil drain pan has a primary and a secondary drain with 3/4" NPT
female connections. The connectors required are 3/4" NPT male, either
Suction Line Grommet
Figure 11
PVC or metal pipe, and should be hand tightened to a torque of no more than 37 in-lbs. to prevent damage to the drain pan
connection. An insertion depth of approximately 3/8” to 1/2” (3-5 turns) should be expected at this torque.
7
1. Ensure drain pan hole is not obstructed.
2. To prevent potential sweating and dripping on to finished space, it may be necessary to insulate the condensate drain
line located inside the building. Use Armaflex® or similar material.
A secondary condensate drain connection has been provided for areas where the building codes require it. Pitch all drain
lines a minimum of 1/4" per foot to provide free drainage. Provide required support to the drain line to prevent bowing. If the
secondary drain line is required, run the line separately from the primary drain and end it where condensate discharge can
be easily seen.
NOTE: Water coming from secondary line means the coil primary drain is plugged and needs immediate attention.
Insulate drain lines located inside the building or above a finished living space to prevent sweating. Install a condensate trap
to ensure proper drainage.
NOTE: When units are installed above ceilings, or in other locations where damage from condensate overflow may occur,
it is MANDATORY to install a field fabricated auxiliary drain pan
under the coil cabinet enclosure.
The installation must include a “P” style trap that is located as
close as is practical to the evaporator coil. See Figure 12 for
If secondary drain is not installed, the secondary
access must be plugged.
CAUTION
details of a typical condensate line “P” trap.
NOTE: Trapped lines are required by many local codes. In the
absence of any prevailing local codes, please refer to the requirements
listed in the Uniform Mechanical Building Code.
Drain
Connection
A drain trap in a draw-through application prevents air from being drawn
back through the drain line during fan operation thus preventing condensate from draining, and if connected to a sewer line to prevent sewer
Air Handler
2" MIN.
gases from being drawn into the airstream during blower operation.
Field experience has shown condensate drain traps with an open verti-
cal Tee between the air handler and the condensate drain trap can improve condensate drainage in some applications, but may cause exces-
POSITIVE LIQUID
SEAL REQUIRED
AT TRAP
3" MIN.
sive air discharge out of the open Tee. Goodman® does not prohibit this
type of drain but we also do not recommend it due to the resulting air
leakage. Regardless of the condensate drain design used, it is the
Figure 12
installer’s responsibility to ensure the condensate drain system is of sufficient design to ensure proper condensate removal from the coil drain pan.
Use of a condensate removal pump is permitted when necessary. This condensate pump should have provisions for shutting off the control voltage should a blocked drain occur. A trap must be installed between the unit and the condensate pump.
IMPORTANT NOTE: The evaporator coil is fabricated with oils that may dissolve styrofoam and certain types of plastics.
Therefore, a removal pump or float switch must not contain any of these materials.
Tip: Priming the “P” trap may avoid improper draining at the initial installation and at the beginning of the cooling season.
9 Ductwork
This air handler is designed for a complete supply and return ductwork system.
To ensure correct system performance, the ductwork is to be sized to accommodate 350-450 CFM per ton of cooling with
the static pressure not to exceed 0.5" in w.c. Refer to ACCA Manual D, Manual S and Manual RS for information on duct
sizing and application. Flame retardant ductwork is to be used and sealed to the unit in a manner that will prevent leakage.
NOTE: A downflow application with electric heat must have an L-shaped sheet metal supply duct without any outlets or
registers located directly below the heater.
9.1 Return Ductwork
DO NOT LOCATE THE RETURN DUCTWORK IN AN
AREA THAT CAN INTRODUCE TOXIC, OR OBJECTIONABLE FUMES/ODORS INTO THE DUCTWORK.
The return ductwork is to be connected to the air han-
Do not operate this product without all the ductwork
attached.
dler bottom (upflow configuration).
10 Return Air Filters
Each installation must include a return air filter. This filtering may be performed at the air handler using the factory filter rails
or externally such as a return air filter grille. When using the factory filter rails, a nominal 16x20x1”, 20x20x1” or 24x20x1”
(actual dimension must be less than 23-½”x20”) filter can be installed on a B, C and D cabinet respectively (the cabinet size
is the seventh letter of the model number).
8
11 Electric Heat
Refer to the installation manual provided with the electric heat kit for the correct installation procedure. All electric heat must
be field installed. If installing this option, the ONLY heat kits that are permitted to be used are the HKS series. Refer to the
air handler unit’s Serial and Rating plate or the HKS specification sheets to determine the heat kits compatible with a given
air handler. No other accessory heat kit besides the HKS series may be installed in these air handlers.
The heating mode temperature rise is dependent upon the system airflow, the supply voltage, and the heat kit size (kW)
selected. Use data provided in Tables 3, 4 and 5 to determine the temperature rise (°F).
NOTE: For installations not indicated above the following formula is to be used:
TR = (kW x 3412) x (Voltage Correction) / (1.08 x CFM)
Where: TR = Temperature Rise
kW = Heater Kit Actual kW
3412 = Btu per kW
VC* = .96 (230 Supply Volts)
= .92 (220 Supply Volts)
= .87 (208 Supply Volts)
1.08 = Constant
CFM = Measured Airflow
VC* (Voltage Correction)
NOTE: The Temperature Rise Tables can also be used to estimate the air handler airflow delivery. When using these tables
for this purpose set the room thermostat to maximum heat and allow the system to reach steady state conditions. Insert two
thermometers, one in the return air and one in the supply air. The temperature rise is the supply air temperature minus the
return air temperature. Using the temperature rise calculated, CFM can be estimated from the TR formula above. See
Technical Manual and/or Service Manual for more information.
CFM
8001219233137
1000 9 1519253044
1200 8 12152125374962
1400 7 11131821324253
1600 6 9 12 15 19 28 37 46
1800 5 8 10 14 16 25 33 41
2000 5 7 9 12 15 22 30 37
3 5 6 8 10 15 19/20 25
HEAT KIT NOMINAL kW
230/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
Table 3
CF M
3 5 6 8 10 15 19/20 25
8001017212833
10008 1317222740
12007 11141922334556
14006 10121619293848
1600 5 8 10 14 17 25 33 42
18005 7 9 1215223037
20004 7 8 1113202733
HEAT KIT NOMINAL kW
208/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
Table 5
CFM
8001118223035
1000 9 14 18 24 28 42
1200 7 12 15 20 24 35 47 5 9
1400 6 10 13 17 20 30 40 5 1
1600 6 9 11 15 18 27 35 44
1800 5 8 10 13 16 24 31 39
2000 4 7 9 12 14 21 28 35
3 5 6 8 10 15 19/20 25
HEAT KIT NOMINAL kW
220/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
Table 4
Heater Kit (Kw)
AVPTC24B14
AVPTC30B14
AVPTC36C14
AVPTC48C14
AVPTC42D14
AVPTC48D14
AVPTC60D14
Please refer to page 16 for specific heater kit application guidelines.
3 5 6 8 1 0 15 19 20 21 or 25
550 650 700 800 850 NR NR NR NR
600 700 750 875 950 NR NR NR NR
NR 850 900 1000 1200 1440 1500 1500 NR
NR 850 900 1000 1200 1440 1500 1500 NR
†
850** 1250 1300 1500 1550 1720 NR 1800 NR
††
NR 1250 1300 1500 1550 1720 NR 1815 1850
†††
NR 1250 1300 1500 1550 1780 NR 1850 1850
MINIMUM CFM REQUIRED FOR HEATER KITS
Table 6
9
12 Electrical and Control Wiring
IMPORTANT: All routing of electrical wiring must be made through provided electrical knockouts. Do not cut, puncture or
alter the cabinet for electrical wiring.
12.1 Building Electrical Service Inspection
This unit is designed for single-phase electrical
supply only. DO NOT OPERATE ON A THREEPHASE POWER SUPPLY. Measure the power
supply to the unit. The supply voltage must be
measured and be in agreement with the unit
nameplate power requirements and within the
range shown.
12.2 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 used must carry the Minimum Circuit Ampac-
ity (MCA) listed on the unit’s Series and Rating
Plate.
Nominal Input Minimum Voltage Maximum Voltage
208-240 197 253
ELECTRICAL VOLTAGE
Table 7
FIRE HAZARD!
To avoid the risk of property damage, personal injury
or fire, use only copper conductors.
• 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 must be sized to allow no more than a 2%
voltage drop from the building breaker/fuse panel
to the unit.
• Wires with different insulation temperature rating have
varying ampacities - be sure to check the temperature
rating used.
Refer to the latest edition of the National Electric Code
or in Canada the Canadian Electric Code when determining the correct wire size.
12.3 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 provides
the maximum overcurrent device permissible.
NOTE: Fuses or circuit breakers are to be sized larger than the
equipment MCA but not to exceed the MOP.
HIGH VOLTAGE!
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or death.
HIGH VOLTAGE!
T o avoid prope rty dama ge , persona l injury or death
due to el ect rical shock, this unit MUST have an
uninterrupted, unbroken
electrical ground circuit may consist of an
appro pri at ely sized electrical wire connecting the
ground lug in the unit control box to the building
electrica l s ervice panel.
Other methods of grounding are p ermitted if pe rformed
in ac co rda n ce w ith th e N a tio na l E le ctr ic C ode
(NEC) /Americ an Nation al Standar ds Institu te
(ANSI)/National Fire Protection Assoc iation (NFPA ) 70
and local/state codes. In Canada, electrical gro unding
is to be in ac co rda nce w ith t he Cana dian E lectric C ode
(CSA) C22.1.
electrical ground. The
Top of
Cabinet
12.4 Electrical Connections – Supply Voltage
IMPORTANT NOTE: USE COPPER CONDUCTORS ONLY.
Knockouts are provided on the air handler top panel and sides of
the cabinet to allow for the entry of the supply voltage conductors,
as shown in Figure 13. 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. An NEC or CEC approved
strain relief is to be used at this entry point. Some codes/municipalities require the supply wire to be enclosed in conduit. Consult
your local codes.
Side of
Cabinet
KNOCK-OUT FOR ELECTRICAL
CONNECTIONS
Figure 13
10
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