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Table of Contents
- 1 Table of Contents
- 2 Inspect New Unit
- 3 Safety Considerations
- 4 Location
- 5 Unit Support
- 6 Refrigeration System
- 7 Electrical Wiring
- 8 Defrost System
- 9 Start−Up Procedure
- 10 Refrigerant Charge
- 11 Sequence of Operation
- 12 Troubleshooting
- 13 Maintenance
- 14 Comfort Alertt Diagnostics Codes
- 15 R−410A Quick Reference Guide
- Download this manual
INSTALLATION INSTRUCTIONS
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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Clearances
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N4H3, C4H3, H4H3, T4H3,
NXH5, CXH5, HXH5, TXH5
Safety Labeling and Signal Words
DANGER,
WARNING,
2 − 3
5 − 10
10 − 11
12 − 13
14
14 − 17
18
18
18
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19
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20
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 5103 02 May 2010
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Table of Contents
Summary of Contents for Tempstar N4H3
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump N4H3, C4H3, H4H3, T4H3, NXH5, CXH5, HXH5, TXH5 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 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 1 Clearances (various examples) Wall Wall 6” 24” (152mm) (610mm) Service 24” 18” (610mm) (457mm) Service 6” 18” (152mm) (457mm) 18” (457mm) 18” (457mm) Wall Wall 6” 6” (152mm) (152mm) 24” 24” 18”...
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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 CAUTION per foot of run (10mm rise or fall per 305 mm of run) } or compressor may not function properly. PROPERTY DAMAGE HAZARD A. -
Page 5: Refrigeration System
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump REFRIGERATION SYSTEM A. COMPONENT MATCHES Installing with Indoor Piston − cooling operation. Check to see that the proper system components are in (Heat pumps also use an outdoor piston for heating place, especially the indoor coil. operation, refer to section F.) R−410A outdoor units can only be used with R−410A Check piston size shipped with indoor unit to see if it... - Page 6 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump B. REFRIGERANT LINE SETS WARNING The refrigerant line set must be properly sized to assure maximum efficiency and proper oil circulation. PERSONAL INJURY HAZARD Refer to Product Specifications and Long Line Applications Guideline for line set sizing. Failure to relieve system pressure could result in personal injury and/or death.
- Page 7 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 8 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 9 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 10: 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 11 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 11 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 12: Defrost System
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump DEFROST SYSTEM 1. Jumper across the DFT terminals on the defrost A. DEFROST THERMOSTAT board (Figure 13). With this method, the defrost The defrost thermostat is factory installed on a short tube thermostat is removed from the circuit, and operation stub extending from the coil end plate. - Page 13 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 13 Defrost Control Board H9C1 ® 30 60 90 T1 C C O SPEEDUP 428 01 5103 02...
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Page 14: Start−Up Procedure
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump START−UP PROCEDURE 1. Set indoor thermostat selector switch to OFF. 2. Turn ON all electrical disconnect devices. 3. If unit has a crankcase heater, energize the heater and wait 24 hours before proceeding. 4. - Page 15 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump A. UNITS WITH COOLING MODE TXV B. UNITS WITH INDOOR PISTON Units installed with cooling mode TXV require charging by Units installed with indoor pistons require charging by the the subcooling method. superheat method. The following procedure is valid when indoor airflow is 1.
- Page 16 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump C. HEATING MODE To check system operation during heating cycle, refer to the Tech Label on outdoor unit. This chart indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units.
- Page 17 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 16 Rating Plate (required) Subcooling Temperature ° F (° C) ° F (° C) ° F (° C) ° F (° C) ° F (° C) (° C) (° C) Measured Liquid Pressure (psig) R−410A Required Liquid Line Temperature °...
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Page 18: 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 19 INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump Figure 18 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 20: R−410A Quick Reference Guide
INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump 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. •...
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