International comfort products H4H3 Series Installation Instructions Manual
3-phase r-410a split system heat pump
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INSTALLATION INSTRUCTIONS
3-Phase R-410A Split System Heat Pump
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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Product Family: H4H3
Safety Labeling and Signal Words
DANGER,
WARNING,
2 - 3
5 - 8
9 - 10
11
12
12 - 13
13
14
14
. . . . . . . . . .
15 - 16
. . . . . . . . . . . . . . . . .
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
506 01 5102 00
March 2008
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Table of Contents
Related Manuals for International comfort products H4H3 Series
Summary of Contents for International comfort products H4H3 Series
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Page 1: Table Of Contents
Comfort Alertt Diagnostics Codes R-410A Quick Reference Guide ....Product Family: H4H3 Signal Words in Manuals The signal word WARNING is used throughout this... -
Page 2: Inspect New Unit
6 inches from the 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-410A Split System Heat Pump company immediately and file a concealed damage claim. WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in per‐... - Page 3 Wall 6” 24” Service 18” Wall 6” 24” Service 4” 24” Service 18” 506 01 5102 00 3-phase R-410A 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
Failure to follow this caution may result in property damage. Inadequate unit support may cause excessive vibra‐ tion, noise, and/or stress on the refrigerant lines, leading to refrigerant line failure. 3-phase R-410A Split System Heat Pump Figure 2 a” dia. Tie Down Knockouts In Base Pan (2 places) -
Page 5: Refrigeration System
É É É É 8 O'CLOCK 506 01 5102 00 3-phase R-410A Split System Heat Pump B. REFRIGERANT LINE SETS The refrigerant line set must be properly sized to assure maximum efficiency and proper oil circulation. Refer to Product Specifications and Long Line Applications Guideline for line set sizing. - 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 7 506 01 5102 00 3-phase R-410A Split System Heat Pump Clean line set tube ends with emery cloth or steel brush. Remove any grit or debris.
- Page 8 6. After the final evacuate sequence, confirm there are no leaks in the system. If a leak is found, repeat the entire process after repair is made. 3-phase R-410A Split System Heat Pump Figure 8 BREAK VACUUM WITH DRY NITROGEN...
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Page 9: Electrical Wiring
FIELD GROUND WIRING GROUND 506 01 5102 00 3-phase R-410A Split System Heat Pump Phase Monitor Relay Board The Phase Monitor Board detects the sequence of the three phase electrical system, and a relay breaks the Y (call for cooling) control signal if the phasing is incorrect. - Page 10 REMOVE WIRES FROM CRIMP NUT IN INDOOR FAN COIL WHEN INSTALLING OUTDOOR THERMOSTATS. SYSTEMS WITHOUT OUTDOOR THERMOSTATS INDOOR THERMOSTAT SPLICE SUBBASE CONNECTION 3-phase R-410A Split System Heat Pump Typical Thermostat (Control Circuit) Connections MUST BE ENERGIZED WHEN REQUESTING SUPPLEMENTAL HEAT. SYSTEMS WITH TWO OUTDOOR THERMOSTATS DEFROST THERMOSTAT BOARD...
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Page 11: Defrost System
506 01 5102 00 3-phase R-410A 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
3. Measure liquid line temperature by attaching an accurate thermistor type sensor or electronic thermometer to liquid line near outdoor coil. 3-phase R-410A Split System Heat Pump 5. Set indoor thermostat selector switch to COOL or HEAT. Operate unit for minimum 15 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 5102 00 3-phase R-410A Split System Heat Pump Measured Liquid Pressure (psig) B. HEATING MODE On a call for heating, the thermostat makes circuits R-Y and R-G (circuit R-O is NOT made, and the reversing valve stays in the de-energized, heating position). -
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-410A Split System Heat Pump Comfort Alertt Diagnostics Figure 15 (some models) - Page 15 - 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 5102 00 3-phase R-410A Split System Heat Pump Comfort Alertt Diagnostics (some models) Status LED Troubleshooting Information Supply voltage is present at module terminals 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. • Observe all WARNINGS, CAUTIONS, NOTES, and bold text. 3-phase R-410A Split System Heat Pump Comfort Alertt Diagnostics (some models) Troubleshooting Information...