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INSTALLATION INSTRUCTIONS
3-phase R-22 Split System Heat Pump
These instructions must be read and understood completely before attempting installation.
DANGER, WARNING, CAUTION, and
NOTE
The signal words DANGER, WARNING, CAU-
TION, and NOTE are used to identify levels of haz-
ard seriousness. The signal word DANGER is only
used on product labels to signify an immediate haz-
ard. The signal words WARNING, CAUTION, and
NOTE will be used on product labels and through-
out 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 opera-
tion.
TABLE OF CONTENTS
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Product Family: N2H3, H2H3
Safety Labeling and Signal Words
2
2
2
2 - 3
4
4 - 9
9 - 10
11
12
12 - 13
13
14
14
. . . . . . . . . . . . . .
15
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
!
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 per-
sons could result in equipment malfunction, prop-
erty damage, personal injury and/or death.
The information contained in this manual is in-
tended for use by a qualified service technician fa-
miliar 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.
506 01 5001 00
May 2007
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Table of Contents
Related Manuals for International comfort products H2H3 Series
Summary of Contents for International comfort products H2H3 Series
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS 3-phase R-22 Split System Heat Pump Product Family: N2H3, H2H3 These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE The signal words DANGER, WARNING, CAU‐ TION, and NOTE are used to identify levels of haz‐... -
Page 2: Inspect New Unit
Do not install unit under roof overhangs unless gutters are present. A minimum vertical clearance of 48 inches is required to the overhang. 3-phase R-22 Split System Heat Pump company immediately and file a concealed damage claim. Improper installation, adjustment, alteration, service or maintenance can void the warranty. - Page 3 Wall 6” 24” Service 18” Wall 6” 24” Service 4” 24” Service 18” 506 01 5001 00 3-phase R-22 Split System Heat Pump Clearances (various examples) 18” 24” 18” Service 4” wide fence Wall 24” Service 18” 18” Wall 24”...
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Page 4: Unit Support
If there is a refrigerant mis-match, consult the indoor coil manufacturer to determine if a refrigerant conversion kit is available for the indoor coil. 3-phase R-22 Split System Heat Pump C. FASTENING UNIT DOWN If conditions or local codes require the unit be attached in place, remove the knockouts in the base pan and install tie down bolts through the holes (refer to Figure 2). - Page 5 Long Line Application Guideline document for additional instruc‐ tions. 506 01 5001 00 3-phase R-22 Split System Heat Pump B. REFRIGERANT LINE SETS The refrigerant line set must be properly sized to assure maximum efficiency and proper oil circulation.
- Page 6 Leave the plugs in the tube ends until the filter-drier is installed. The optimal location for the filter-drier is close to the indoor coil. Heat pump filter-driers are “bi-flow” type. Either end can be pointed towards indoor coil.
- Page 7 Tighten nut finger tight, then wrench additional ½ turn only. 506 01 5001 00 3-phase R-22 Split System Heat Pump Service valve bodies are brass and suction tube stub is copper. Liquid Service Valve with Piston...
- Page 8 Turn the stem until it just contacts the rolled lip of the valve body. After the refrigerant charge has bled into the system, open the Liquid service valve. 3-phase R-22 Split System Heat Pump Triple Evacuation Sequence EVACUATE WAIT...
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Page 9: Electrical Wiring
Ground Lug. Refer to Wiring Diagram on unit and Figure 11. 506 01 5001 00 3-phase R-22 Split System Heat Pump Tighten cap finger tight and then tighten additional 6 of a turn (1 wrench flat) to properly seat the sealing surfaces. - Page 10 INDOOR THERMOSTAT SPLICE SUBBASE CONNECTION 3-phase R-22 Split System Heat Pump NOTE: Use No. 18 AWG (American Wire Gage) insulated (35 °C minimum) wire. If color-coded, thermostat is located more than 100 feet (30.5 m) from unit as measured along the control voltage wires, use No.
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Page 11: Defrost System
506 01 5001 00 3-phase R-22 Split System Heat Pump 7. Unit will remain in defrost for remainder of defrost-cycle time or until defrost thermostat reopens at approximately 65 °F coil temperature of... -
Page 12: Start-Up Procedure
4. Refer to unit rating plate for required subcooling temperature. 3-phase R-22 Split System Heat Pump 5. Set indoor thermostat selector switch to COOL or HEAT. Operate unit for minimum 10 minutes, then check the system refrigerant charge. -
Page 13: Sequence Of Operation
NOTE: Low ambient cooling feature allows unit to operate safely in cooling mode down to 0° F outdoor ambient. 506 01 5001 00 3-phase R-22 Split System Heat Pump R-22 Required Liquid Line Temperature (°F) - Cooling Mode Measured Liquid Pressure (psig) B. -
Page 14: Troubleshooting
1. Free flow of air is essential. Keep fences, shrubs, trash cans, and other obstructions at least 18 inches from all coil inlets. 3-phase R-22 Split System Heat Pump Comfort Alertt Diagnostics Figure 17 (some models) -
Page 15: Comfort Alertt Diagnostics Codes
- For automatic reset, Comfort Alert will continue to monitor compressor and system; if condition returns to normal, the ALERT code is automatically turned off. 506 01 5001 00 3-phase R-22 Split System Heat Pump Comfort Alertt Diagnostics (some models) Status LED Troubleshooting Information Supply voltage is present at module terminals 1. - Page 16 If not, R and C are reversed wired. Verify voltage at contactor coil falls below 0.5VAC when off. Review. 3-phase R-22 Split System Heat Pump Comfort Alertt Diagnostics (some models) Troubleshooting Information International Comfort Products, LLC...