Table of Contents
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INSTALLATION INSTRUCTIONS
R−410A Split System Heat Pump
Product Family: N4H3, C4H3, H4H3, T4H3,
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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N4H4, C4H4, H4H4, T4H4
Safety Labeling and Signal Words
DANGER,
WARNING,
2 − 3
5 − 9
9 − 10
11
11
12 − 13
14
14
14
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15
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16
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
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.
2
WARNING
!
2
2
DEATH, PERSONAL INJURY, AND/OR PROPERTY
DAMAGE HAZARD
4
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.
WARNING
428 01 5102 00 Aug 2008
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Table of Contents
Related Manuals for International comfort products N4H3
Summary of Contents for International comfort products N4H3
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Product Family: N4H3, C4H3, H4H3, T4H3, N4H4, C4H4, H4H4, T4H4 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... -
Page 2: Inspect New Unit
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump INSPECT NEW UNIT After uncrating unit, inspect thoroughly for hidden company immediately and file a concealed damage damage. If damage is found, notify the transportation claim. SAFETY CONSIDERATIONS Consult a qualified installer, service agency, or the WARNING dealer/distributor for information and assistance. -
Page 3: Clearances
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 1 Clearances (various examples) Wall Wall 6” (152mm) 24” (610mm) Service 24” 18” (610mm) (457mm) Service 6” 18” (152mm) (457mm) 18” (457mm) 18” (457mm) Wall Wall 6” 6” (152mm) (152mm) 24” 24” 18”... -
Page 4: Unit Support
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump UNIT SUPPORT NOTE: Unit must be level | 2 degrees {a inch rise or fall Figure 2 Tie Down Knockouts per foot of run (10mm rise or fall per 305 mm of run) } or compressor may not function properly. -
Page 5: Refrigeration System
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump REFRIGERATION SYSTEM A. COMPONENT MATCHES B. REFRIGERANT LINE SETS Check to see that the proper system components are in The refrigerant line set must be properly sized to assure place, especially the indoor coil. maximum efficiency and proper oil circulation. - Page 6 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump C. ROUTING AND SUSPENDING REFRIGERANT enough so that lines can be wrapped with extra insulation. Fill all gaps with RTV caulk. This will prevent noise LINES transmission between the tubing and the foundation or Run refrigerant lines as straight and direct as possible, wall.
- Page 7 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump F. SERVICE VALVES G. BRAZING CONNECTIONS NOTE: Service valves are closed and plugged from the factory. For Liquid Service Valve − Braze lineset to adapter tube Outdoor units are shipped with a refrigerant charge BEFORE bolting adapter to valve.
- Page 8 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump H. EVACUATING LINE SET AND INDOOR COIL Triple Evacuation Method The unit is shipped with a factory refrigerant charge. The The triple evacuation method should only be used when liquid line and suction line service valves have been system does not contain any water in liquid form and closed after final testing at the factory.
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Page 9: Electrical Wiring
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump I. OPENING SERVICE VALVES After the refrigerant charge has bled into the system, open the Liquid service valve. Outdoor units are shipped with a refrigerant charge sealed in the unit. Opening the service valves releases NOTE: These are not back−seating valves. - Page 10 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 10 Typical Thermostat (Control Circuit) Connections NOTE: WHEN USING OUTDOOR THERMOSTATS, W MUST BE ENERGIZED WHEN REQUESTING SUPPLEMENTAL HEAT. SYSTEMS WITH ONE OUTDOOR THERMOSTAT SYSTEMS WITH TWO OUTDOOR THERMOSTATS OUTDOOR INDOOR THERMOSTAT DEFROST THERMOSTAT INDOOR...
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Page 11: Defrost System
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump DEFROST SYSTEM 6. When you hear reversing valve change position, A. DEFROST THERMOSTAT remove screwdriver immediately; otherwise, control will terminate normal 10−minute defrost The defrost thermostat is factory installed on a short tube cycle in approximately 2 seconds. -
Page 12: Refrigerant Charge
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump REFRIGERANT CHARGE A. COOLING MODE 3. Measure liquid line temperature by attaching an accurate thermistor type sensor or electronic Outdoor units are shipped with a refrigerant charge to thermometer to liquid line near outdoor coil. match a specific indoor coil and 15 feet (4.6m) of refrigerant line. - Page 13 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Rating Plate (required) Subcooling Temperature ° F (° C) Figure 13 ° F ° F ° F ° F (° C) (° C) (° C) (° C) (° C) (° C) Measured Liquid Pressure (psig) R−410A Required Liquid Line Temperature °...
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Page 14: Sequence Of Operation
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump SEQUENCE OF OPERATION A. COOLING MODE B. HEATING MODE On a call for cooling, the thermostat makes circuits R−O, On a call for heating, the thermostat makes circuits R−Y R−Y, and R−G. Circuit R−O energizes reversing valve, and R−G (circuit R−O is NOT made, and the reversing switching it to cooling position. - Page 15 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 15 Comfort Alertt Diagnostics (some models) Status LED Status LED Description Status LED Troubleshooting Information Green “POWER” Module has power Supply voltage is present at module terminals Red “TRIP” Thermostat demand signal 1.
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Page 16: R−410A Quick Reference Guide
• When system must be opened for service, break vacuum with dry nitrogen and replace all filter−driers. • 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 428 01 5102 00 Lewisburg, TN 37091 USA...