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INSTALLATION INSTRUCTIONS
R−410A Two−Stage Split System Air Conditioner
These instructions must be read and understood completely before attempting installation.
DANGER, WARNING, CAUTION, and
NOTE
The
signal
words
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.
TABLE OF CONTENTS
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CCA9, HCA9, TCA9,
CCA7, HCA7, TCA7
Safety Labeling and Signal Words
DANGER,
WARNING,
2
. . . . . . . . . . . . . . . . . . .
2
2
7
. . . . . . .
8
9
12
. . . . . . . . . . . . . . . .
16
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
WARNING
WARNING
!
The signal word CAUTION is used throughout this
manual in the following manner:
CAUTION
!
Signal Words on Product Labeling
Signal words are used in combination with colors
and/or pictures on product labels.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in per-
sonal injury and/or death.
Before installing, modifying, or servicing system,
main electrical disconnect switch must be in the
OFF position. There may be more than 1 discon-
nect switch. Lock out and tag switch with a suit-
able warning label.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in per-
sonal injury
Sheet metal parts may have sharp edges or burrs.
Use care and wear appropriate protective clothing
and gloves when handling parts.
421 01 1701 00
2/24/12
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Summary of Contents for HEIL CCA9
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS R−410A Two−Stage Split System Air Conditioner CCA9, HCA9, TCA9, CCA7, HCA7, TCA7 These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE Signal Words in Manuals The signal word WARNING is used throughout this... -
Page 2: Safety Considerations
INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner SAFETY CONSIDERATIONS Figure 1 Connecting Tube Installation NOTE: Avoid contact between tubing and structure Improper installation, adjustment, alteration, service, OUTDOOR WALL INDOOR WALL maintenance, or use can cause explosion, fire, electrical CAULK LIQUID TUBE shock, or other conditions which may cause death, personal injury, or property damage. - Page 3 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner For hurricane tie downs − contact your local distributor for Make Piping Connections details and PE (Professional Certification), if required by local WARNING authorities. On rooftop applications, mount on level platform or frame. PERSONAL INJURY AND ENVIRONMENTAL Place unit above a load−bearing wall and isolate unit and HAZARD...
- Page 4 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner Table 1 − Accessory Usage REQUIRED FOR LONG LINE Required for Sea Coast Application Accessory APPLICATIONS* (Over 80 ft. / 24.38 m) (within 2 miles/3.22 km) Crankcase Heater Yes, standard on some units Compressor Start Assist Capacitor and Relay Liquid Line Solenoid Valve See Long Line Applications Guideline...
- Page 5 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner Install Liquid Line Filter Drier Indoor Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns. If CAUTION deep vacuum equipment is not available, the alternate triple evacuation method may be used by following the specified procedure.
- Page 6 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner WARNING Figure 5 Triple Evacuation Sequence EVACUATE ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal BREAK VACUUM WITH DRY NITROGEN injury or death. The unit cabinet must have an uninterrupted or WAIT unbroken ground to minimize personal injury if an electrical fault should occur.
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Page 7: Start−Up Procedure
INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner A crankcase heater is required if refrigerant tubing is longer Airflow Setup with Non-Communicating Furnace than 80 ft. (24.38 m). Refer to the Long Line Applications or Fan Coil Guidelines. Two−stage compressor operation requires two different indoor airflow settings for proper operation. -
Page 8: System Functions & Sequence Of Operation
INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner 5. Set room thermostat to COOL and fan control to ON or Communication and Status Function Lights AUTO mode, as desired. Operate unit for 15 minutes. Green communications (COMM) Light (Only Check system refrigerant charge. with Observer Communicating Wall Control) Check Charge A green LED (COMM light) on the outdoor board indicates... -
Page 9: Troubleshooting
Control will flash the appropriate fault code. (See Table 6) Check the wiring to the wall control, indoor and outdoor units. On CCA9, HCA9 and TCA9 models − The outdoor fan is an ECM type. The motor control is continuously powered with Model Plug high voltage. - Page 10 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner 6. If LPS or HPS trips 3 consecutive cycles, the unit Compressor Thermal Cutout operation is locked out for 4 hours. If the control senses the compressor voltage after start−up, 7. In the event of a high pressure switch trip or high and is then absent for 10 consecutive seconds while cooling pressure lockout, check the refrigerant charge outdoor demand exists, the thermal protector is open.
- Page 11 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner resistance is infinite, much lower than 32 ohms, or is TEMPERATURE THERMISTORS grounded, the compressor must be replaced. Thermistors are electronic devices which sense temperature. As the temperature increases, the resistance decreases. MAJOR COMPONENTS Thermistors are used to sense outdoor ambient (OAT) and 2-Stage Control coil temperature (OCT).
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Page 12: Status Codes
INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner Table 6 − Status Codes AMBER LED OPERATION FAULT Possible Cause and Action FLASH CODE Standby – no call for unit operation None On solid, no flash Normal operation Standby – no call for unit operation None Normal operation Low Stage Cool/Heat Operation... - Page 13 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner Figure 9 Resistance vs Temperature Chart THERMISTOR CURVE (-17.77) (-6.67) (4.44) (15.56) (26.67) (37.78) (48.89) TEMPERATURE °F (°C) Figure 10 Two−Stage Control Board 421 01 1701 00...
- Page 14 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner Observer Communicating Wall Control Four−Wire Connection Wiring Diagrams Figure 11 (See Thermostat Installation Instructions for specific unit combinations) Variable Speed Wall Control Furnace/Fan Coil Outdoor Green Green Yellow Yellow DX− DX− DX− White Optional Remote Room Sensor Humidifier...
- Page 15 INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner Non−Communicating Indoor Unit with Figure 14 Observer Communicating Wall Control Wall Control NAXA00101DB Green White Yellow Communicating Outdoor Y/Y2 Non-Communicating Indoor Note: This installation requires the daugh ter board accessory, NAXA00101DB. Note: This installation does not allow for Sensor communicating feature functionality.
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Page 16: R−410A Quick Reference Guides
INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner 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. •...