International Comfort Products CCA724GKA100, HCA724GKA100, TCA724GKA100, CCA736GKA100, HCA736GKA100, TCA736GKA100, CCA748GKA100, HCA748GKA100, TCA748GKA100, CCA760GKA100, HCA760GKA100, TCA760GKA100 User Manual
TECHNICAL SUPPORT MANUAL
Two Stage Split System Air Conditioner
(C,H,T)CA7
Safety Labeling and Signal Words
DANGER, WARNING, CAUTION, and
NOTE
ThesignalwordsDANGER,WARNING,
CAUTION, and NOTE are used to identify levels of
hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manuals that may
apply to the product.
DANGER -- Immediate hazards which will result in
severe personal injury or death.
WARNING -- Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION -- Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE -- Used to highlight suggestions which will
result in enhanced installation, reliability, or operation.
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
!
The signal word CAUTION is used throughout this
manual in the following manner:
!
Signal Words on Product Labeling
Signal words are used in combination with colors
and/or pictures on product labels.
WARNING
WARNING
CAUTION
TABLE OF CONTENTS
Model Number Identification2--3...................
DEATH, PERSONAL INJURY, AND/OR PROPERTY
DAMAGE HAZARD
Failure to carefully read and follow this warning
could result in equipment malfunction, property
damage, personal injury and/or death.
Installation or repairs made by unqualified persons could result in equipment malfunction, property damage, personal injury and/or death.
The information contained in this manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the
proper tools and test instruments.
Installation must conform with local building
codes and with the National Electrical Code
NFPA70 current edition or Canadian Electrical
Code Part 1 CSA C.22.1.
WARNING
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
OUTDOOR UNIT MODEL NUMBER IDENTIFICATION GUIDE (single p hase)
Digit Position:12345, 6789101112
Example Part Number:
HCTCA724GKA100
H = Heil Mainline
T = T empstar Mainline
H = Arcoaire Mainline
C = Comfortmaker Mainline
C = Day & Night Mainline
H = Airquest Mainline
C = Keeprite Mainline
C = Kenmore Mainline
H = Kenmore Mainline
T = Kenmore Mainline
H = ICP Commercial Mainline
N = Heil Entry
N = Tempstar EntryBRANDING
N = Arcoaire EntryBRANDING
N = Comfortmaker Entry BRANDING
N = Day & Night EntryBRANDING
N = Airquest EntryBRANDING
N = Keeprite EntryBRANDING
N = Kenmore EntryBRANDING
N = Kenmore EntryBRANDING
N = Kenmore EntryBRANDING
TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
ACCESSORIES PART NUMBER IDENTIFICATION GUIDE
Digit Position:123456, 78, 910, 11
Example Part Number:
N = Non-- Branded
A = AccessoryPRODUCT GROUP
S = Split System (AC & HP)KIT USAGE
A = Original
B = 2nd GenerationMAJOR SERIES
0 = Generic or Not Applicable
2=R--22
4 = R-- 410AREFRIGERANT
Product Identifier Number
Package Quantity
Type of Kit (Example: CH = Crankcase Heater)
NASA00101CH
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
R--410A QUICK REFERENCE GUIDE
• R--410A refrigerant operates at 50% -- 70% higher pressures than R--22. Be sure that servicing equipment and
replacement components are designed to operate with R--410A.
• R--410A refrigerant cylinders are rose colored.
• Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
• R--410A systems should be charged with liquid refrigerant. Use a commercial type metering device in the
manifold hose when charging into suction line with compressor operating.
• Manifold sets should be 750 psig high--side and 200 psig low--side with 520 psig low--side retard.
• Use hoses with 750 psig service pressure rating.
• Leak detectors should be designed to detect HFC refrigerant.
• R--410A, as with other HFC refrigerants, is only compatible with POE oils.
• Vacuum pumps will not remove moisture from oil.
• Do not use liquid line filter--driers with rated working pressures less than 600 psig.
• Do not install a suction line filter--drier in liquid line.
• POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
• POE oils may cause damage to certain plastics and roofing materials.
• Wrap all filter--driers and service valves with wet cloth when brazing.
• A liquid line filter--drier is required on every unit.
• Do not use with an R--22 TXV.
• If indoor unit is equipped with an R--22 TXV, it must be changed to an R--410A TXV.
• Never open system to atmosphere while it is under a vacuum.
• When system must be opened for service, break vacuum with dry nitrogen and replace all filter--driers. Evacuate
to 500 microns before recharging.
• Do not vent R--410A into the atmosphere.
• Do not use capillary tube indoor coils.
• Observe all WARNINGS, CAUTIONS, NOTES, and bold text.
International Comfort Products, LLC
Lewisburg, TN 37091 USA
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
Model Sizes: 24, 36, 48, 60
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
R--410A CHARGING CHART
Rating Plate (required) Subcooling Temperature ° F(° C)
Short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the status code.
This control board contains a five minute short cycle protector. A five minute delay will occur between compressor
off/on cycles. To bypass delay, short forced defrost pins for 1 second then release. The crankcase heater is
energized during off cycle below 65ºF.
FAULT DEFINITION
Standby
Low Stage
High Stage
Emergency Mode
System Communications Failure
Invalid Model Plug
High Pressure Switch Trip
Low Pressure Switch Trip
Control Fault
Brown out (230V)
No 230v with Call to Run
UNIT OPERATION
FLASH CODE
53
55
56
71
72
73
74
81
82
83
84
FAULT DEFINITION
Outdoor Air Temp Sensor
Coil Temp Sensor
Temp Sensor Range Error
Low Stage Thermal Cutout
High Stage Thermal Cutout
Contactor Shorted
Contactor Open (No 230v to Comp)
Low Stage Thermal Lockout (4 HRS)
High Stage Thermal Lockout (4 HRS)
Low Pressure Lockout (4 HRS)
High Pressure Lockout (4 HRS)
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
† Total capacities are net (I.D. blower heat subtracted) system capacities based on 25’ line set.
If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur.
†† At TVA rating indoor condition (75 °F db, 63 °F wb), all other indoor air temperatures are at 80 ° Fdb
If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur.
^System amps are total of indoor and outdoor amps.
‡ Chart data is for 80° F indoor dry bulb. For indoor db temperatures other than 80° F, measure Indoor db and Indoor CFM, and plug these
into the
formula below. Measure outdoor db and indoor wet bulb, apply these to the chart above, find MBh and S/T, and plug these into the formula
below.
(Note: if indoor db is the only thing changing, total capacity, MBh, stays the same.).05
Sensible Capacity at Indoor db LOWER than 80 ° F=(MBhxS/T) --
Sensible Capacity at Indoor db HIGHER than 80 ° F=(MBhxS/T) +
( 80 -- Indoor db ) x 835 x In-
(
door CFM
( Indoor db -- 80 ) x 835 x In-
(
door CFM
1000
1000
)
)
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
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TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7
POWERFURNACE MODEL
LOW
SPEED
CAPACITY
POWER
HIGH
SPEED
CAPACITY
MODEL
COOLING INDOOR
(C,H,T)CA7 24
POWERFURNACE MODEL
COOLING Multiplying Factors for other Indoor Combinations