Bard PA13301-A, PA13241-A, PA13361-B, PA13361-A User Manual

INSTALLATION INSTRUCTIONS
SINGLE PACKAGE
AIR CONDITIONERS
MODELS
PA13241-A PA13301-A PA13361-A PA13361-B PA13422-A PA13422-B PA13422-C PA13482-A PA13482-B PA13482-C PA13602-A PA13602-B
PA13602-C
Bard Manufacturing Company, Inc. Bryan, Ohio 43506
Since 1914 . . . Moving ahead just as planned.
© Copyright 2006
Manual 2100-467D Page 1 of 25
CONTENTS
Getting Other Informations and Publications ........ 3
General Instructions
Important ................................................................ 4
Shipping Damage .................................................... 4
General ................................................................ 4
Field Installed Heater Packages (Optional) ............. 4
Installation
Location ................................................................ 9
Slab Mounting .......................................................... 9
Typical Installations ......................................... 9 & 12
Condensate Drain Trap ......................................... 12
Air Filters .............................................................. 12
Wiring – Main Power ............................................. 13
Wiring – 24V Low Voltage Control Circuit ............. 13
Transformer Taps ................................................... 13
Thermostats ........................................................... 13
Figures
Figure 1 Unit Dimensions ...................................... 8
Figure 2 Slab Mounting at Ground Level ............ 10
Figure 3 Airflow and Service Access
Clearances ............................................ 10
Figure 4 Elevated Mounting Platform ................... 11
Figure 5 Condensate Drain Trap ......................... 12
Figure 6 Low Voltage Wiring ............................... 14
Figure 7 Low Ambient Control Wiring ................. 17
Figure 8 Fan Blade Setting ................................. 18
Figure 9 Brazing Diagram ................................... 21
Figure 10 Control Disassembly ............................. 23
Figure 11 Winding Test ......................................... 23
Figure 12 Drip Loop .............................................. 23
Figure 13 Motor Connections ................................ 24
Figure 14 Wiring (Connections/Voltage) ............... 25
Start Up and Operation
General .............................................................. 15
Topping Off System Charge ................................... 15
Safety Practices ..................................................... 15
Start Up Notes ....................................................... 15
Three Phase Scroll Compressor Start Up
Information ............................................................. 16
Sequence of Operation .......................................... 16
Indoor Blower Motor .............................................. 16
Compressor Control Module .......................... 16 & 17
Adjustments ........................................................... 17
Low Ambient Control ............................................. 17
Service and Troubleshooting
Service Hints ......................................................... 18
Pressure Service Ports .......................................... 18
Refrigerant Charge ................................................ 18
Fan Blade Settings ................................................ 18
Pressure Tables ............................................. 19 & 20
Suction and Discharge Tube Brazing .................... 21
Troubleshooting ECM Blower Motors ............. 22-25
Tables
Table 1 Rated CFM & ESP .................................. 4
Table 2 Electrical Specifications .......................... 5
Table 3 Opt. Field Installed Heater Packages ..... 6
Table 4 Opt. Field Installed Elec. Heater ............. 7
Table 5 Filter Requirements & Sizes ................. 12
Table 6 Thermostat Wire Size ........................... 13
Table 7 Wall Thermostats .................................. 13
Table 8 Fan Blade Setting Dimensions.............. 18
Table 9 Indoor Blower Performance .................. 18
Table 10 Pressure Table ...................................... 19
Table 11 Pressure Table ...................................... 20
Manual 2100-467D Page 2 of 25
Getting Other Information and Publications
These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.
National Electrical Code ...................... ANSI/NFPA 70
Standard for the Installation .............. ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for Warm Air ...................... ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for ............................ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential .............. ACCA Manual D
Winter and Summer Air Conditioning and Equipment Selection
FOR MORE INFORMATION, CONTACT THESE PUBLISHERS:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W. Washington, DC 20009 Telephone: (202) 483-9370 Fax: (202) 234-4721
ANSI American National Standards Institute
11 West Street, 13th Floor New York, NY 10036 Telephone: (212) 642-4900 Fax: (212) 302-1286
ASHRAE American Society of Heating, Refrigerating,
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E. Atlanta, GA 30329-2305 Telephone: (404) 636-8400 Fax: (404) 321-5478
NFPA National Fire Protection Association
Batterymarch Park P.O. Box 9101 Quincy, MA 02269-9901 Telephone: (800) 344-3555 Fax: (617) 984-7057
Manual 2100-467D Page 3 of 25
GENERAL INSTRUCTIONS
IMPORTANT
The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. All duct work, supply and return ducts, must be properly sized for the design airflow requirement of the equipment. ACCA is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage.
SHIPPING DAMAGE
Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.
GENERAL
The refrigerant system is completely assembled and charged. All internal wiring is complete.
The unit is designed for use with or without duct work. Flanges are provided for attaching the supply and return ducts.
These instructions explain the recommended method to install the air cooled self-contained unit and the electrical wiring connections to the unit.
These instructions and any instructions packaged with any separate equipment required to make up the entire system should be carefully read before beginning the installation. Note particularly “Starting Procedure” and any tags and/or labels attached to the equipment.
FIELD INSTALLED HEATER PACKAGES (OPTIONAL)
These packaged air conditioners are manufactured without supplementary electric heaters. Supplementary heaters are available for simple, fast field installation.
A separate power circuit is required for the supplementary heaters.
IMPORTANT: Refer to Table 1 when designing duct work for maximum available static pressure with heater installed.
Refer to data shown in Table 3 and 4 for proper application information on all available heater combinations and what units they can be used with. It also shows the applicable circuit ampacities, fuse size, and wire size for each heater combination.
TABLE 1
RATED CFM AND EXTERNAL STATIC
PRESSURE (ESP)
ledoM
.oN
4231AP 0331AP0001 6331AP 2431AP 8431AP 0631AP
detaR
MFC
008
0011 0541 0551 0571
dednemmoceR
egnaRwolfriA
etoN etoN etoN etoN etoN etoN
detaR
PSE
81.005.0
32.005.0
32.005.0
32.005.0
82.005.0
82.005.0
.xaM
PSE
While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way. Authorities having jurisdiction should be consulted before the installation is made.
Manual 2100-467D Page 4 of 25
NOTE: ECM motors provide rated CFM up to 0.50 ESP
TABLE 2
ELECTRICAL SPECIFICATIONS
2241862619
1-06-802/0321-06-802/0321-06-802/0323-06-802/0321-06-802/0323-06-802/0323-06-0641-06-802/0323-06-802/0323-06-0641-06-802/0323-06-802/0323-06-064
yticapmAtiucriCmuminiM51814261333221339241936271
egnaRegatloVgnitarepO352-791352-791352-791352-781352-791352-781605-414352-791352-781605-414352-791352-781605-414
AtiucriC–zH06
gnitaRcirtcelE
ledoMA-14231APA-10331APA-16331APB-16331APA-22431APB-22431APC-22431APA-28431APB-28431APC-28431APA-20631APB-20631APC-20631AP
*eziSeriWdleiF21018210101418012180101
CSCB911510112518
802/032–spmAtinulatoT8.11/8.018.41/3.314.81/4.613.31/0.711.81/2.614.51/1.414.017.42/0.320.81/9.617.019.82/3.529.91/7.719.11
AtiucriC–rosserpmoC
**.xaM–esuFyaleD02525302055351050402060452
eziSeriWdnuorG21018210101418014180121
epyTrosserpmoC.piceR.piceR.piceR.piceRllorcSllorcSllorcSllorcSllorcSllorcSllorcSllorcSllorcS
stloV802/032802/032802/032802/032802/032802/032064802/032802/032064802/032802/032064
resnednoCdnarotoMnaF
spmAdaoLdetaR5.8/5.711/5.941/219.8/6.77.31/8.116.9/3.87.77.81/7121/9.017.79.22/3.919.31/7.116.8
MPR/PH–rotoMnaF528-6/1528-6/1528-6/1528-6/1528-4/1528-4/1528-4/1528-4/1528-4/1528-4/1528-4/1528-4/1528-4/1
spmArotoRkcoL84/8475/7547/4757/57511/511511/51105711/7111.38/1.3805431/431011/01125
spmArotoMnaF1.11.11.11.15.15.15.15.15.15.15.15.15.1
*MPR/PH–rotoMrewolBSV-3/1SV-2/1SV-2/1SV-2/1SV-2/1SV-2/1SV-2/1SV-4/3SV-4/3SV-4/3SV-4/3SV-4/3SV-4/3
rotaropavEdnarotoM
spmA–rotoMrewolB2.27.23.33.39.39.39.35.45.45.40.50.50.5
MFC/.aiD–naF0072/"420062/"420062/"420062/"420043/"420043/"420043/"420043/"420043/"420043/"420043/"420043/"420043/"42
)sdnuop(thgieWgnippihS063014014014044044094044044005054054005
).zo014-R(egrahC5758021021061061061061061061061061061
gnilooCMFC008000105110511054105410541055105510551057105710571
* VS = Variable Speed Programmable Motor
Manual 2100-467D Page 5 of 25
X
XX
TABLE 3
OPTIONAL FIELD INSTALLED HEATER PACKAGES
ONLY TO BE USED WITH THE MODELS INDICATED
esahPA-14231APA-10331APA-16331APB-16331APA-22431APB-22431APC-22431APA-28431APB-28431APC-28431APA-20631APB-20631APC-20631AP
&stloV
egakcaPretaeH
ledoM
51A-313PHE1-802/042XX
90B-313PHE3-802/042X
0
50A-313PHE1-802/042 XXX
1A-313PHE1-802/042 XXX
51B-313PHE3-802/042X
51A-315PHE1-802/042XXX
50A-315PHE1-802/042X
90B-315PHE3-802/042 XXX
0 1A-315PHE1-802/042XXX
9
51B-315PHE3-802/042 XX
51C-315PHE3-064 XX X
0C-315PHE3-064 XX X
Manual 2100-467D Page 6 of 25
eziSeriW
dnuorG
2
rewoP
gniriW
dleiF
2
revO.xaM
noitcetorP
BtiucriC
tnerruC
1
yticapmA
tiucriC
.niM
3
dleiF.oN
stiucriC
lanretnI
rekaerB
tiucriC
retaeH
64 /3505/068/601
132/6252/0301/0101
132/6252/0301/0101
06/03
/9707/084/48
06/03
93 /6404/058/801
142/8252/0301/0101
enoN
93 /6404/058/801
142/8252/0301/0101
141514141
enoN
enoN
V802/042
spmA
.rtH
TABLE 4
yticapaC&WK.rtH
stloV802@
yticapaC&WK.rtH
stloV042@
00 1,7157.3008,211.81/8.02
00 1,7157.3008,211.81/8.02
OPTIONAL FIELD INSTALLED ELECTRIC HEATER TABLE
WKHUTBWKHUTB
stloVtinU
sesahP
50A-313PHE1-802/0425
01A-313PHE1-802/04201001,4305.7000,622.63/6.141
.oNledoM
egakcaP
retaeH
51A-313PHE1-802/04251002,1552.11004,831.45/5.26186/9707/084/48
01A-315PHE1-802/04201001,4305.7000,622.63/6.14164/3505/068/601
50A-315PHE1-802/0425
90B-313PHE3-802/0429007,0357.6000,327.81/7.12
51A-315PHE1-802/04251002,1552.11004,831.45/5.26186
51B-313PHE3-802/04251002,1552.11004,832.13/2.631
90B-315PHE3-802/0429007,0357.6000,327.81/7.12
51B-315PHE3-802/04251002,1552.11004,832.13/2.631
51C-315PHE3-08451002,1581182030121
90C-315PHE3-0849007,038.01
conductor wires in accordance with the National Electrical Code and all existing local codes.
conform to the National Electric Code and all local codes.
1 Maximum size of the time delay fuse or HACR circuit breaker for protection of field wiring devices.
2 Based on wire suitable for 75°C. Other wiring materials must be rated for marked “Minimum Circuit Ampacity” or greater. Based on 75°C copper wire. All wiring must
conductor sizing.
3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), Article 310 for power
IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and
Manual 2100-467D Page 7 of 25
FIGURE 1
Unit General Dimensions
DIMENSIONS OF UNITS
Compressor access door
Control panel door
High voltage knockout
D
Low voltage knockout
Heater package knockout
Heater package access panel
W
L
A
E
B
Supply opening
Drain access
C
Return opening
F
Condenser fan
H
Condenser air intake grille
Blower motor
access door
47 11/16"
G
Condenser air
intake grille
Unit Dimension Chart
Unit
PA/PH1324,1330,1336 5.875 32.875 13.875 32.875 26.25 53.25 38.125 23.25 1.125 1.375 35.625 PA/PH1342,1348,1360 9.875 37.875 15.875 37.875 33.25 55.25 42.375 30.25 1.5 2.375 38.125
Manual 2100-467D Page 8 of 25
Supply Size Return Size Unit Overall Dimensions
A C B C H (height) L (length) W (width) D E F G
MIS-2142
INSTALLATION
LOCATION
GENERAL
The unit must be located outside, or in a well ventilated area. It must not be in the space being heated or cooled. A sound absorbing material should be considered if the unit is to be installed in such a position or location that might cause transmission of sound or vibration to the living area or adjacent buildings.
SLAB MOUNTING
A minimum of 24 inches should be provided between the coil inlet and any building surfaces. Provide a minimum of three feet clearance on the service access side of the unit. See Figure 2.
TYPICAL INSTALLATIONS
1.
ROOF MOUNTED
sturdy base on the roof of the building. Return air to the unit is brought through a single return grille (grilles with built-in filters are best since they enable easy access for filter changing). Return air ducts are attached to the lower section of the front panel. Supply air is brought from the unit to attic duct work or to a furred down hall. Supply air duct is attached to the top of the front panel.
– The unit is mounted on a
In roof top installation, as in all installations, the air conditioner must be level from side to side. However, the unit should have a pitch along the length to assure complete external drainage of precipitation and of defrost condensate.
2.
CRAWL SPACE
space must be well insulated and provided with a vapor barrier. In addition, the crawl space must be thoroughly ventilated and provided with a good vapor barrier as a ground cover. It is most desirable to install the unit will be outdoors rather than inside the crawl space, so that it will be readily accessible for service.
3.
SLAB MOUNTED AT GROUND LEVEL
type installation is ideal for homes with a slab floor construction where a roof mounted unit is not desired. The supply and return duct work can be run through a furred closet space.
4.
THROUGH THE WALL
requires a suitable framework to be fabricated capable of withstanding the unit weight. Normally the unit will be insulated so as to minimize supply and return duct work.
– Duct work installed in crawl
– This type installation
– This
CAUTION: All outdoor duct work must be
thoroughly insulated and weatherproofed. All attic duct work must be thoroughly insulated. Two inch thick insulation with suitable vapor barrier is recommended for both outdoor and attic runs.
Manual 2100-467D Page 9 of 25
FIGURE 2
SLAB MOUNTING AT GROUND LEVEL
1 inch clearance
between duct and
any combustible
material if distance
between outside
wall and unit is less
than 3 feet (needed
on electric heat
units only).
Supply Duct
Return Duct
Building
AIRFLOW AND SERVICE ACCESS CLEARANCES
The distance between outside wall and unit varies with installation requirements.
FIGURE 3
Air Outlet
Side
View
Package Unit
Mounting Slab
1/4 inch per foot slope away from building
Ground Level
Building
Heater Package
Access
Heater Package
Blower
and
Blower Motor
Supply and Return Ducts
Blower Service
Access
Nearest Structure
Control Panel
Access
Control Panel
24" min.
Nearest Structure
36" min.
Air Inlet
Compressor
Access
Comp-
ressor
Top
View
24" min.
Nearest Structure
Air Inlet
Condenser fan
and motor access
from top.
Leave 60" min.
above fan.
MIS-2143
Manual 2100-467D Page 10 of 25
FIGURE 4
ELEVATED MOUNTING PLATFORM
12" min. if in
*
32°F or lower climate
Platform can be as
shown or solid
48" min.
48" min.
Poured concrete, brick, or block
*
12" min. if in
32°F or lower climate
Metal frame
Both legs must rest
on surface of platform
Both legs must rest
on surface of platform
MIS-2144
* AS REQUIRED
Manual 2100-467D Page 11 of 25
5.
OTHER INSTALLATIONS
– Many other installations are possible with the packaged air conditioner. No matter what the installation, always consider the following facts:
A. Insure that the discharge air is not obstructed in
any way so as to cause operation difficulties.
B. The indoor coil drain pan is equipped with a
coupling that must be piped through a condensate drain trap to a suitable drain.
C. Always mount the unit is such a position that it
may be easily reached for servicing and maintenance.
D. Insure that the unit is clear so that proper air
flow over the outdoor coil will be maintained.
If this unit is operated in cooling below a 55° outdoor ambient temperature, the installation of low ambient controls (CMA-28) to unit is required.
Prior thought should be given to return air location and placement of the air filter(s). The air filter(s) must be of adequate size and readily accessible to the operator of the equipment. Filters must be adequate in size and properly maintained for proper operation. If this is not done, excessive energy use, poor performance, and multiple service problems will result. It is impossible to oversize air filters. Generous sizing will result in cleaner air and coils as well as lower operating costs and extend the time between required changes. Table 5 shows minimum filter areas and recommended filter sizes. Actual filter sizes can vary with the installation due to single or multiple returns utilizing a filter/grille arrangement or being placed immediately ahead of the indoor coil face in the return air duct.
TABLE 5
FILTER REQUIREMENTS & SIZES
CONDENSATE DRAIN TRAP
It is very important to provide a trap in the condensate drain line to allow a positive liquid seal in the line and assure correct drainage from the coil condensate pan.
Install condensate drain trap shown in Figure 8. Use drain connection size or larger. Do not operate unit without trap. Unit must be level or slightly inclined toward drain. With a trap installed on a unit located in an unconditioned area, water in the trap may freeze. It is recommended that the trap material be of a type that will allow for expansion of water when it freezes.
AIR FILTERS
Air filters for the return air side of the system are not provided as part of these models, and must be field supplied and installed as part of the final installation.
CONDENSATE DRAIN TRAP
NOTE: If roof hood accessory is to be used,
FIGURE 5
.oNledoMaerAretliFmuminiM
4231AP 0331AP 6331AP
2431AP 8431AP 0631AP
sehcnIerauqS264
)teeFerauqS12.3(
sehcnIerauqS806
)teeFerauqS26.4(
eziS
information on air filters may be found under that heading in this manual. Air filters are supplied as part of that package.
dednemmoceR
1x8/5-03x51
1x02x61)2(
Manual 2100-467D Page 12 of 25
AVremrofsnarTALFeguaGeriW
mumixaM ecnatsiD
teeFnI
553.2
02 81 61 41 21
54 06
001 061 052
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information and maximum fuse size. Each outdoor unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. If field installed heaters are added to the basic unit, a second separate power supply circuit will be required. The heater rating plate located adjacent to the basic unit rating plate will show the appropriate circuit ampacity fuse size, etc. (Also see “Electrical Specifications” on pages 5 & 7.) All models are suitable for connection with copper wire only. These instructions must be adhered to. Refer to the National Electrical Code for complete current carrying capacity data on the various insulation grades of wiring material.
The electrical specifications list fuse and wire sizes (75°F copper) for all models including the most commonly used heater sizes.
The unit rating plate lists a “Maximum Time Delay Fuse” or “HACR” type circuit breaker that is to be used with the equipment. The correct size must be used for proper circuit protection and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor.
WIRING – 24V LOW VOLTAGE CONTROL CIRCUIT
Five (5) wires should be run from thermostat subbase to the 24V terminal board in the unit. A five conductor, 18 gauge copper, color-coded thermostat cable is recommended. The connection points are shown in Figure 6.
TABLE 6
THERMOSTAT WIRE SIZE
TRANSFORMER TAPS
230/208V, 1 phase and 3 phase equipment employ dual primary voltage transformers. All equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are:
TAP RANGE
240 253 – 216 208 220 – 187
NOTE: The voltage should be measured at the field
power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition).
THERMOSTATS
See specific wiring information for the different models, heater KWs, and voltages on unit and heating wiring diagrams.
IMPORTANT NOTE: Only the thermostats as shown above will work with this equipment. The thermostats and correct
TABLE 7
WALL THERMOSTATS
tatsomrehTserutaeFtnanimoderP
750-3048
)0401D0113HT(
850-3048
)1511D0225HT(
060-3048
)544-0211(
operation can be assured only by proper selection and application of these parts.
lanoitnevnoCroPH
taeHegats1;looCegats1
otua-no:naFlooc-ffo-taeh
elbammargorP-noNcinortcelE
taeHegats2;looCegats2
elbammargorP-noNcinortcelE
revoegnahclaunaMrootuA
taeHegats3;looCegats3
revoegnahclaunaMrootuA
cinortcelEelbammargorP-noN/elbammargorP
Manual 2100-467D Page 13 of 25
Low Voltage Wiring
FIGURE 6
LOW VOLTAGE WIRING
Thermostat Subbase
1120-445
TH5220D1151
TH3110D1040
Unit 24V
Terminal
Block
OW1
C
G
R
C
G
R
C
G
R
C
G
R
Y2
Y1 L
RC
RC
Y
B
O
B
B
Y
AUX
W
W2
E
E
L
1
2W1 W2
REMOVE JUMPER FOR 2 STAGE ELECTRIC HEAT ON UNITS WITH 15 OR MORE KW
L
3
E
D
A
YO
EY
F
Manual 2100-467D Page 14 of 25
Unit Control Panel
MIS-2149 B
START UP
These units require R-410A refrigerant and Polyol Ester oil.
GENERAL:
1. Use separate service equipment to avoid cross contamination of oil and refrigerants.
2. Use recovery equipment rated for R-410A refrigerant.
3. Use manifold gauges rated for R-410A (800 psi/250 psi low).
4. R-410A is a binary blend of HFC-32 and HFC-125.
5. R-410A is nearly azeotropic - similar to R-22 and R-12. Although nearly azeotropic, charge with liquid refrigerant.
6. R-410A operates at 40-70% higher pressure than R-22, and systems designed for R-22 cannot withstand this higher pressure.
7. R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming potential.
8. R-410A compressors use Polyol Ester oil.
9. Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil.
10. A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil.
11. Limit atmospheric exposure to 15 minutes.
12. If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.
TOPPING OFF SYSTEM CHARGE
If a leak has occurred in the system, Bard Manufacturing recommends reclaiming, evacuating (see criteria above), and charging to the nameplate charge. Topping off the system charge can be done without problems.
With R-410A, there are no significant changes in the refrigerant composition during multiple leaks and recharges. R-410A refrigerant is close to being an azeotropic blend (it behaves like a pure compound or single component refrigerant). The remaining refrigerant charge, in the system, may be used after leaks have occurred and then “top-off” the charge by utilizing the charging charts on the inner control panel cover as a guideline.
REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system
performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction.
SAFETY PRACTICES:
1. Never mix R-410A with other refrigerants.
2. Use gloves and safety glasses, Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin.
3. Never use air and R-410A to leak check; the mixture may become flammable.
4. Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration.
5. Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if exposed.
6. Use only cylinders rated DOT4BA/4BW 400.
7. Never fill cylinders over 80% of total capacity.
8. Store cylinders in a cool area, out of direct sunlight.
9. Never heat cylinders above 125°F.
10. Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly at warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.
START UP NOTES
For improved start up performance, wash the indoor coil with dishwasher detergent.
Manual 2100-467D Page 15 of 25
START UP AND OPERATION
THREE PHASE SCROLL COMPRESSOR START UP INFORMATION
(Model PA13361-B)
Scroll compressors, like several other types of compressors, will only compress in one rotational direction. Direction of rotation is not an issue with single phase compressors since they will always start and run in the proper direction.
However, three phase compressors will rotate in either direction depending upon phasing of the power. Since there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, verification of proper rotation must be made. Verification of proper rotation direction is made by observing that suction pressure drops and discharge pressure rises when the compressor is energized. Reverse rotation also results in an elevated sound level over that with correct rotation, as well as, substantially reduced current draw compared to tabulated values.
Verification of proper rotation must be made at the time the equipment is put into service. If improper
rotation is corrected at this time there will be no negative impact on the durability of the compressor. However, reverse operation for over one hour may have a negative impact on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse
rotation for several minutes the compressor’s internal protector will trip.
All three phase scroll compressors are wired identically internally. As a result, once the correct phasing is determined for a specific system or installation, connecting properly phased power leads to the same Fusite terminals should maintain proper rotation direction.
The direction of rotation of the motor may be changed by reversing any two line connections to the unit.
(Models PA13422-B, -C; PA13482-B, -C; PA13602-B, -C)
All units with three phase scroll compressors are equipped with a three phase line monitor to prevent compressor damage due to phase reversal.
The phase monitor in this unit is equipped with two LED’s. If the “Y” signal is present at the phase monitor and phases are correct, the green LED will light.
If phases are reversed, the red fault LED will be lit and compressor operation is inhibited.
If a fault condition occurs, reverse tow of the supply leads to the unit. Do not reverse any of the unit factory wires as damage may occur.
SEQUENCE OF OPERATION
BLOWER ONLY
room thermostat is placed in the “On” position (circuit R-G makes), the blower will energize and run until the “Fan” switch is placed back into the “Auto” position. This will allow for constant air circulation at a lower airflow during times when the unit is not in operation for cooling or heating.
COOLING
thermostat (circuit R-Y makes), the blower will energize (circuit R-G is automatic when R-Y makes) as well as the compressor, and outdoor fan motor. Note that if the “Fan” switch on the room thermostat is in the “On” position and the blower is already in operation, then the motor will ramp up to the required speed for cooling.
HEATING (1st Stage)
the room thermostat (circuit R-W1 makes), the blower will energize (circuit R-G is automatic when R-W1 makes). This will place the system into heating operation to maintain the thermostat set temperature. Note that if the “Fan” switch on the room thermostat is in the “On” position and the blower is already in operation, then the motor will ramp up to the required speed for heating.
HEATING (2nd Stage)
Stage electric heaters will not maintain the set room temperature, then the thermostat will call for additional heat to help maintain the set temperature. On a call for second stage heating from the room thermostat (circuit R-W2 makes), additional electric heaters will be energized if installed.
– When the “Fan” switch on the
– On a call for cooling from the room
– On a call for heating from
– If the operation of the 1st
INDOOR BLOWER MOTOR
These models feature a variable speed (ECM) motor providing high efficiency, low sound levels and soft start capabilities. The motor is self adjusting to provide the proper airflow rate at duct static pressures up to
0.50" WC without user adjustment or wiring changes.
On command from the wall thermostat the motor will start slowly and ramp up to full speed over a period of 10-15 seconds.
When the thermostat is satisfied the blower will operate for approximately 1 minute, and then slow down and stop.
COMPRESSOR CONTROL MODULE
The compressor control is an anti-short cycle/lockout timer with high and low pressure switch monitoring and alarm output.
Manual 2100-467D Page 16 of 25
ADJUSTABLE DELAY-ON-MAKE AND BREAK TIMER
On a call for compressor operation the delay-on-make period begins which will be 10% of the delay-on-break setting. When the delay-on-make is complete and the high pressure switch (and low pressure switch if employed) is closed, the compressor contactor is energized. Upon shutdown, the delay-on-break timer starts and prevents restart until the delay-on-break and delay-on-make periods have expired.
HIGH PRESSURE SWITCH AND LOCKOUT SEQUENCE (Standard Feature)
If the high pressure switch opens, the compressor contactor will de-energize immediately. The lockout timer will go into a soft lockout and stay in soft lockout until the high pressure switch closes and the delay-on­make time has expired. If the high pressure switch opens again in this same operating cycle the unit will go into manual lockout condition and the alarm circuit will energize. Recycling the wall thermostat resets the manual lockout.
LOW PRESSURE SWITCH, BYPASS, AND LOCKOUT SEQUENCE (Standard Feature)
If the low pressure switch opens for more that 120 seconds, the compressor contactor will de-energize and go into a soft lockout. Regardless the state of the low pressure switch, the contactor will reenergize after the delay-on-make time delay has expired. If the low pressure switch remains open or opens again for longer than 120 seconds the unit will go into manual lockout condition and the alarm circuit will energize. Recycling the wall thermostat resets the manual lockout.
ALARM OUTPUT
Alarm terminal is output connection for applications where alarm signal is desired. This terminal is powered whenever compressor is locked out due to HPC or LPC sequences as described.
ADJUSTMENTS
ADJUSTABLE DELAY-ON-MAKE AND DELAY-ON-BREAK TIMER
The potentiometer is used to select Delay-on-Break time from 30 seconds to 5 minutes. Delay-on-Make (DOM) timing on power-up and after power interruptions is equal to 2 minutes plus 10% of Delay-on-Break (DOB) setting:
0.5 minute (30 seconds) DOB = 123 second DOM
1.0 minute (60 seconds) DOB = 126 second DOM
2.0 minute (120 seconds) DOB = 132 second DOM
3.0 minute (160 seconds) DOB = 138 second DOM
4.0 minute (240 seconds) DOB = 144 second DOM
5.0 minute (300 seconds) DOB = 150 second DOM
LOW AMBIENT CONTROL
Optional Low Ambient Control
An optional low ambient control is available for both factory and field installed options. The low ambient control is to be applied to the PA13 Series models when operation below 55° outdoor conditions are anticipated. Without this device, the evaporating pressure would fall off, and the indoor coil would ice over.
The fan cycling control cycles the fan motor on, once the liquid refrigerant pressure reaches 350 psig, and off, once it has dropped to 225 psig. It will continue to cycle between these parameters depending on outdoor temperatures and the load/stage of the system.
This cycling maintains a minimum liquid pressure affecting the minimum suction pressure. This effect insures an evaporating temperature that is slightly above the point of ice formation on the evaporator.
This field installed option is Bard Part #CMA-28. See Figure 7.
FIGURE 7
LOW AMBIENT CONTROL WIRING
NOTE: Both high and low pressure switch controls are
inherently automatic reset devices. The high pressure switch and low pressure switch cut out and cut in settings are fixed by specific air conditioner or heat pump unit model. The lockout features, both soft and manual, are a function of the Compressor Control Module.
Manual 2100-467D Page 17 of 25
SERVICE AND TROUBLESHOOTING
SERVICE HINTS
1. Caution homeowner to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces airflow through the system which shortens equipment service life as well as increasing operating costs.
2. Check all power fuses or circuit breakers to be sure that they are the correct rating.
3. Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found later in this manual covering all models on cooling cycle. It is imperative to match the correct pressure table to the unit by model number.
REFRIGERANT CHARGE
The correct system R-410A charge is shown on the unit rating plate.
You can reference Tables 10 & 11 to validate proper system performance. However, it is recommended that if incorrect charge is suspected, the system be reclaimed, evacuated and charged to the nameplate quantity and type.
The nameplate charge quantity is optimized for thermal performance and efficiency of this self-contained package system.
FAN BLADE SETTINGS
Shown in Figure 8 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil.
Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly.
FIGURE 8
FAN BLADE SETTING
"B"
“A”
TABLE 8
FAN BLADE SETTING DIMENSIONS
ledoM"A"noisnemiD
4231AP 0331AP 6331AP
"¼3
2431AP 8431AP 0631AP
MD-1417BC
Manual 2100-467D Page 18 of 25
TABLE 9
INDOOR BLOWER PERFORMANCE
2
ledoM
4231AP01.005.0006008008 0331AP51.005.005700010001 6331AP51.005.052800110011 2431AP02.005.052900410041 8431AP02.005.0520105510551 0631AP02.005.0051105610561
1 Motor will deliver consistent CFM through voltage supply range with no deterioration
(197-253V for all 230/208V models).
2 Continuous CFM is the total air being circulated during continuous (manual fan) mode.
3 Will occur automatically with a call for "Y" for cooling mode operation.
4 Will occur automatically with a call for "W1" for heating mode operation.
detaR
PSE
XAM PSE
suounitnoC
wolfriA
1
3
detaR
gnilooC
MFC
4
MFC
detaR
gnitaeH
741
235
541
705
961
751
645
551
025
251
565
935
761
051
835
215
471
261
061
375
355
155
361
251
241
271
525
345
235
915
Air Temperature Entering Outdoor Coil Degree F
TABLE 10
PRESSURE TABLE
341
284
241
754
041
234
831
704
731
283
531
853
331
433
131
013
921
682
721
262
561
351
494
151
964
051
344
841
814
641
293
441
763
241
343
041
813
831
392
631
962
841
215
361
584
161
954
951
234
751
604
551
083
351
553
151
923
841
403
641
872
851
484
794
541
651
754
964
341
351
924
044
141
151
204
214
931
941
473
483
731
741
353
263
531
441
233
043
331
241
013
813
131
041
982
692
821
731
762
472
141
071
415
494
931
761
561
361
061
851
551
351
051
841
864
584
831
344
654
631
814
724
531
393
793
331
963
573
231
443
253
031
023
923
821
592
603
172
721
482
261
051
941
741
641
441
241
141
931
731
631
425
605
061
794
084
174
851
554
751
444
924
551
714
304
193
351
873
151
563
353
941
823
933
841
303
413
641
872
882
(Continued on Page 20 in Table 11)
erusserP°50505050050011°5102521
erutarepmeT
riAnruteR
ledoM
COOLING
521
431
832
442
ediShgiH
ediSwoL
ediShgiH
ediSwoL
621
441
352
ediShgiH
ediSwoL
531
642
ediShgiH
ediSwoL
ediSwoL
162
541
252
ediShgiH
ediShgiH
ediSwoL
431
521
742
ediShgiH
ediSwoL
441
352
262
+2 psig suction, +5 psig liquid),
ediShgiH
ediSwoL
ediShgiH
ediSwoL
+5 PSIG
+2 PSIG
BW°76
08 ° BD
57 ° BD
26 ° BW
08 ° BD
4231AP
57 ° BD
58 ° BD
27 ° BW
26 ° BW
08 ° BD
76 ° BW
57 ° BD
58 ° BD
27 ° BW
26 ° BW
0331AP
58 ° BD
76 ° BW
27 ° BW
6331AP
it is recommended refrigerant charge be reclaimed, system evacuated and charged to serial plate quantity.
Tables based upon rated CFM (airflow) across the evaporator coil.
If incorrect charge suspected (more than
HIGH SIDE PRESSURE
LOW SIDE PRESSURE
Manual 2100-467D Page 19 of 25
185
155
351
341
241
141
041
831
731
631
431
231
565
251
635
325
151
705
494
941
874
664
841
844
734
641
914
904
541
093
083
341
663
753
241
343
433
241
561
585
041
361
555
931
261
525
731
061
494
631
951
464
431
751
434
331
651
404
231
451
973
031
251
553
165
361
251
745
161
051
335
025
841
505
294
741
774
564
541
944
834
124
441
014
241
393
383
141
863
953
931
443
533
431
341
035
255
331
061
851
651
451
351
151
051
505
325
231
084
494
131
654
564
131
134
634
031
604
704
183
921
573
821
543
653
451
445
365
241
351
815
735
141
251
015
394
141
151
764
484
041
051
244
754
931
831
731
134
941
614
841
583
893
741
453
663
TABLE 11
PRESSURE TABLE
131
113
921
882
821
562
621
242
erusserP°5050505005001511°02521
riAnruteR
ediShgiH
ediSwoL
erutarepmeT
57 ° BD
26 ° BW
ledoM
COOLING Air Temperature Entering Outdoor Coil Degree F
151
041
831
731
531
ediSwoL
033
913
941
603
592
182
741
272
541
752
842
ediShgiH
ediShgiH
ediSwoL
831
113
921
821
721
521
ediSwoL
913
731
492
782
531
072
362
431
542
932
ediShgiH
ediShgiH
ediSwoL
721
841
033
741
503
541
972
441
452
ediShgiH
ediSwoL
631
513
621
582
521
452
421
422
ediShgiH
ediSwoL
641
323
433
531
541
292
203
162
431
441
072
331
341
032
832
ediShgiH
ediSwoL
ediShgiH
ediSwoL
+5 PSIG
+2 PSIG
+2 psig suction, +5 psig liquid),
BW°76
57 ° BD
58 ° BD
08 ° BD
57 ° BD
58 ° BD
08 ° BD
2431AP
27 ° BW
26 ° BW
8431AP
76 ° BW
27 ° BW
26 ° BW
08 ° BD
58 ° BD
76 ° BW
27 ° BW
0631AP
HIGH SIDE PRESSURE
LOW SIDE PRESSURE
Tables based upon rated CFM (airflow) across the evaporator coil.
If incorrect charge suspected (more than
it is recommended refrigerant charge be reclaimed, system evacuated and charged to serial plate quantity.
Manual 2100-467D Page 20 of 25
SUCTION AND DISCHARGE TUBE BRAZING
Compliant Scroll compressors have copper plated steel suction and discharge tubes. These tubes are far more rugged and less prone to leaks than copper tubes used on other compressors. Due to different thermal properties of steel and copper, brazing procedures may have to be changed from those commonly used.
To disconnect: heat joint Areas 2 and 3 slowly and uniformly until braze material softens and the tube can be pulled out of suction fitting. (See Figure 9.)
To connect:
– Recommended brazing materials: silfos with
minimum 5% silver or silver braze material with flux.
BRAZING DIAGRAM
– Reinsert tube into fitting.
– Heat tube uniformly in Area 1 moving slowly to
Area 2. When joint reaches brazing temperature, apply brazing material. (See Figure 9)
– Heat joint uniformly around the circumference
to flow braze material completely around the joint.
– Slowly move torch into Area 3 to draw braze
material into joint. (See Figure 9.)
Do not overheat joint.
FIGURE 9
Manual 2100-467D Page 21 of 25
TROUBLESHOOTING GE ECM 2.3
NOTE: Affects Models PA13241, PA13301, PA13361
CAUTION:
Disconnect power from unit before removing or replacing connectors, or servicing motor. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor.
Symptom Cause/Procedure
Motor rocks slightly This is normal start-up for ECM when starting
Motor won’t start Check blower turns by hand
• No movement
• Motor rocks, • Check for loose or compliant motor mount but won’t start
Motor oscillates up • It is normal for motor to oscillate with no load & down while being on shaft
tested off of blower
Motor starts, but runs erratically
• Varies up and down • Check line voltage for variation or “sag”
or intermittent • Check low voltage connections
• Check power at motor
• Check low voltage (24 Vac R to C) at motor
• Check low voltage connections (G, Y, W, R, C) at motor
• Check for unseated pins in connectors on motor harness
• Test with a temporary jumper between R - G
• Check motor for tight shaft
• Perform motor/control replacement check
Perform Moisture Check
• Make sure blower wheel is tight on shaft
• Perform motor/control replacement check
(G, Y, W, R, C) at motor, unseated pins in motor harness connectors
• Check “Bk” for erratic CFM command (in variable-speed applications)
• Check out system controls, Thermostat
Perform Moisture Check
Symptom Cause/Procedure
• Noisy blower or cabinet Check for loose blower housing, panels, etc.
• “Hunts” or “puffs” at Does removing panel or filter reduce high CFM (speed)
Evidence of Moisture
• Motor failure or • Replace motor and
Check
malfunction has occurred and moisture is present
• Evidence of moisture Perform Moisture Check present inside air mover
Do Don’t
• Check out motor, controls, Automatically assume the motor is bad.
wiring and connections thoroughly before replacing motor
• Orient connectors down so • Locate connectors above 7 and 4 o’clock
water can’t get in positions
- Install “drip loops”
• Use authorized motor and • Replace one motor or control model # with
model #’s for replacement another (unless an authorized replacement)
• Keep static pressure to a • Use high pressure drop filters some have
minimum: H20 drop!
- Recommend high • Use restricted returns
efficiency, low static filters
- Recommend keeping filters
clean.
- Design ductwork for min.
static, max. comfort
- Look for and recommend
ductwork improvement, where necessary
MOTORS
• High static creating high blower speed?
- Check for air whistling through seams in ducts, cabinets or panels
- Check for cabinet/duct deformation
“puffing”?
- Reduce restriction
- Reduce max. airflow
Perform Moisture
½"
• “Hunts” or “puffs” at • Does removing panel or filter reduce high CFM (speed) “puffing”?
• Stays at low CFM • Check low voltage (Thermostat) wires and despite system call connections for cool or heat CFM • Verify fan is not in delay mode; wait until
• Stays at high CFM • “R” missing/not connected at motor
• Blower won’t shut off
Excessive noise • Determine if it’s air noise, cabinet, duct or
• Air noise • High static creating high blower speed?
- Reduce restriction
- Reduce max airflow
delay complete
• “R” missing/not connected at motor
• Perform motor/control replacement check
• Is fan in delay mode? - wait until delay time complete
• Perform motor/control replacement check
Current leakage from controls into G, Y or W? Check for Triac switched thermostat or solid­ state relay
motor noise; interview customer, if necessary
- Is airflow set properly?
- Does removing filter cause blower to slow down? Check filter
- Use low-pressure drop filter
- Check/correct duct restrictions
Manual 2100-467D Page 22 of 25
• Size the equipment wisely • Oversize system, then compensate with low airflow
• Check orientation before • Plug in power connector backwards
inserting motor connectors • Force plugs
Moisture Check
• Connectors are oriented “down” (or as recommended by equipment
manufacturer)
• Arrange harness with “drip loop” under motor
• Is condensate drain plugged?
• Check for low airflow (too much latent capacity)
• Check for undercharged condition
• Check and plug leaks in return ducts, cabinet
Comfort Check
• Check proper airflow settings
• Low static pressure for lowest noise
• Set low continuous-fan CFM
• Use humidistat and 2-speed cooling units
• Use zoning controls designed for ECM that regulate CFM
• Thermostat in bad location?
TROUBLESHOOTING GE ECM2.3
MOTORS CONT’D.
Replacing ECM Control Module
To replace the control module for the GE variable-speed indoor blower motor you need to take the following steps:
1. You MUST have the correct replacement module. The controls are factory programmed for specific operating modes. Even though they look alike, different modules may have completely different functionality.
USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS.
2. Begin by removing AC power from the unit being serviced. DO NOT WORK ON THE MOTOR WITH AC POWER APPLIED. To avoid
electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor.
3. It is not necessary to remove the motor from the blower assembly, nor the blower assembly from the unit. Unplug the two cable connectors to the motor control assembly. There are latches on each connector. DO NOT PULL ON THE WIRES. The plugs remove easily when properly released.
4. Locate the screws that retain to t sheet metal of the unit and remove them. Remove two (2) nuts that retain the control to the bracket and then remove two (2) nuts that retain sheet metal motor control end plate. Refer to Figure 10.
5. Disconnect the three (3) wires interior of the motor control by using your thumb and forefinger squeezing the latch tab and the opposite side of the connector plug, gently pulling the connector. DO
NOT PULL ON THE WIRES, GRIP THE PLUG ONLY. Refer to Figure 10.
6. The control module is now completely detached from the motor. Verify with a standard ohmmeter that the resistance from each motor lead (in the motor plug just removed) to the motor shell is >100K ohms. Refer to Figure 11. (Measure to unpainted motor end plate.) If any motor lead fails this test, do not proceed to install the control module. THE MOTOR IS DEFECTIVE AND MUST BE REPLACED. Installing the new control module will cause it to fail also.
he motor control bracket to the
7. Verify that the replacement control is correct for your
application. Refer to the manufacturer's authorized replacement list.
USING THE WRONG CONTROL WILL RESULT IN IMPROPER OR NO BLOWER OPERATION. Orient the control
module so that the 3-wire motor plug can be inserted into the socket in the control. Carefully insert the plug and press it into the socket until it latches. A SLIGHT CLICK WILL BE HEARD WHEN
PROPERLY INSERTED.
8. Reverse the steps #5, 4, 3 to reconnect the motor control to the motor wires, securing the motor control cover plate, mounting the control to the bracket, and mounting the motor control bracket back into the unit. MAKE SURE THE ORIENTATION YOU SELECT
FOR REPLACING THE CONTROL ASSURES THE CONTROL'S CABLE CONNECTORS WILL BE LOCATED DOWNWARD IN THE APPLICATION SO THAT WATER CANNOT RUN DOWN THE CABLES AND INTO THE CONTROL. DO NOT OVERTIGHTEN THE BOLTS.
9. Plug the 16-pin control plug into the motor. The plug is keyed. Make sure the connector is properly seated and latched.
10. Plug the 5-pin power connector into the motor. Even though the plug is keyed, OBSERVE THE PROPER ORIENTATION. DO NOT FORCE THE CONNECTOR. It plugs in very easily when properly oriented. REVERSING THIS PLUG WILL CAUSE
IMMEDIATE FAILURE OF THE CONTROL MODULE.
11.
Final installation check. Make sure the motor is installed as follows:
a. Motor connectors should be oriented between the 4 o’clock
and 8 o’clock positions when the control is positioned in its final location and orientation.
b.Add a drip loop to the cables so that water cannot enter the
motor by draining down the cables. Refer to Figure 12.
The installation is now complete. Reapply the AC power to the HVAC equipment and verify that the new motor control module is working properly. Follow the manufacturer’s procedures for disposition of the old control module.
Only remove Hex Head Bolts
ECM 2.0
Note: Use the shorter bolts and alignment pin supplied when replacing an ECM 2.0 control.
Figure 10
Figure 3
Control Disassembly
Push until
Latch Seats
Over Ramp
ECM
2.3/2.5
Hex-head Screws
From Motor
Circuit
Board
Motor
Motor Connector (3-pin)
Control Connector (16-pin)
Power Connector (5-pin)
Motor Connector (3-pin)
Back of Control
Figure 11
Figure 4
Winding Test
Motor OK when
R > 100k ohm
Figure 12
Figure 5
Drip Loop
Connector Orientation
Between 4 and 8 o'clock
Drip Loop
Manual 2100-467D Page 23 of 25
TROUBLESHOOTING GE X13-SERIES ECM2.3™ MOTORS
NOTE: Bard Models PA13422, PA13482 & PA13602 contain the X13-Series Motors.
If the Motor is Running
1. It is normal for the motor to rock back and forth on start up.
Do not replace the motor if this is the only problem identified.
2. If the system is excessively noisy, does not appear to change speeds in response to a demand (Heat, Cool, Other), or is having symptoms during the cycle such as tripping limit or freezing coil, check the following:
a. Wait for programmed delays to time out. b.Ensure that the motors control inputs are wired to the factory
supplied wiring diagram to insure motor is getting proper control signals and sequencing.
c. Remove the filter and check that all dampers, registers, and
grilles are open and free flowing. If removing the filters corrects the problem, clean or replace with a less restrictive filter. Also check and clean the blower wheel or coil as necessary.
d.Check the external static pressure (total of both supply and
return) to insure that you are within the ranges as listed on the unit serial plate. If higher than allowed, additional duct work is needed.
e. If the motor does not shut off at the end of the cycle, wait for
any programmed delays to time out (no more than 90 seconds). Also make sure that there is no call for “Continuous Fan” on the "G" terminal.
f. If the above diagnostics do not solve the problem, confirm the
voltage checks in the next section below, then continue with the “Model X13 Communication Diagnostics”.
If the Motor is Not Running
1. Check for proper high voltage and ground at the (L/L1) (G) (N/ L2) connections at the motor (see Figure 13). Correct any voltage issues before proceeding to the next step. The X13 Motor is voltage specific. Only the correct voltage should be applied to the proper motor. Input voltage within plus or minus 10% of the nominal 230 VAC is acceptable.
2. If the motor has proper high voltage and ground at the (L/L1) (G) (N/L2) connections, then continue with the “Model X13 Communication Diagnostics”.
FIGURE 13
L2 LINE POWER
EARTH
GROUND
L1 LINE POWER
NOTE: MOTOR IS CONS TANTLY
POWERED BY LINE VOLTAGE
Manual 2100-467D Page 24 of 25
TROUBLESHOOTING GE X13-SERIES ECM2.3™ MOTORS
CONT’D.
Model X13 Communication Diagnostics
The X13 motor is communicated through 24 VAC low voltage (Thermostat Control Circuit Wiring).
1. Start with unit wiring diagram to confirm proper connections
and voltage (see Figure 14).
24VAC Common
between the common and the appropriate motor terminal (1-5). ("G" input is typically on terminal #1, but refer to wiring diagram!)
FIGURE 14
2. Initiate a demand from the thermostat and check the voltage
If the low voltage communication is not present, check the
a.
demand from the thermostat. Also check the output terminal and wire(s) from the terminal strip or control relay(s) to the motor.
b.If the motor has proper high voltage as identified above
(Motor not Running #1), and proper low voltage to a programmed terminal, and is not operating, the motor is failed, and will require replacement.
24VAC "R" Signal through
thermostat output.
24VAC Common
24VAC "R" Signal through
thermostat output.
Manual 2100-467D Page 25 of 25
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