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INSTALLATION INSTRUCTIONS
R-22 Split System Heat Pump
Product Family: N2H3, H2H3, C2H3, T2H3, N2H4
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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Safety Labeling and Signal Words
DANGER,
WARNING,
2 - 3
5 - 9
9 - 10
11
12
12
13
13
13
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14
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 5001 00
March 2008
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Table of Contents
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Summary of Contents for International comfort products N2H3
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS R-22 Split System Heat Pump Product Family: N2H3, H2H3, C2H3, T2H3, N2H4 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: Inspect New Unit
INSTALLATION INSTRUCTIONS R-22 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 Improper installation, adjustment, alteration, service or dealer/distributor for information and assistance. - Page 3 INSTALLATION INSTRUCTIONS R-22 Split System Heat Pump Figure 1 Clearances (various examples) Wall Wall 6” 24” Service 24” 18” Service 6” 18” 18” 18” Wall Wall 6” 6” 24” 18” 18” Service 24” Service 6” 4” 4” wide fence 6” Post Wall 24”...
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Page 4: Unit Support
INSTALLATION INSTRUCTIONS R-22 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) or compressor may not function properly. View From Top A. -
Page 5: Refrigeration System
INSTALLATION INSTRUCTIONS R-22 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-22 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-22 Split System Heat Pump F. LIQUID LINE FILTER-DRIER 2. Check that piston size (stamped on side of piston) matches with number listed on unit rating plate. Outdoor units are shipped with an appropriate filter-drier Return piston to piston body of liquid service valve for installation in the liquid line.
- Page 8 INSTALLATION INSTRUCTIONS R-22 Split System Heat Pump Deep Vacuum Gauge Response CAUTION Figure 7 and System Conditions PRODUCT DAMAGE HAZARD 5000 Failure to follow this caution may result in product 4500 damage. 4000 LEAK IN Braze with Sil-Fos or Phos-copper alloy on cop‐ 3500 SYSTEM per-to-copper joints and wrap a wet cloth around...
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Page 9: Electrical Wiring
INSTALLATION INSTRUCTIONS R-22 Split System Heat Pump J. 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-22 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-22 Split System Heat Pump DEFROST SYSTEM A. DEFROST THERMOSTAT NOTE: Length of defrost cycle is dependent upon length of time it takes to remove screwdriver from test pins after The defrost thermostat is factory installed on a short tube reversing valve has shifted. -
Page 12: Start-Up Procedure
INSTALLATION INSTRUCTIONS R-22 Split System Heat Pump START-UP PROCEDURE 1. Set indoor thermostat selector switch to OFF. 5. Set indoor thermostat selector switch to COOL or HEAT. Operate unit for minimum 15 minutes, then 2. Turn ON all electrical disconnect devices. check the system refrigerant charge. -
Page 13: Sequence Of Operation
INSTALLATION INSTRUCTIONS R-22 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 14: Comfort Alertt Diagnostics Codes
INSTALLATION INSTRUCTIONS R-22 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.