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INSTALLATION AND MAINTENANCE INSTRUCTIONS
These instructions must be read and understood completely before attempting installation.
The equipment covered in this manual is to be installed by trained and experienced service and installation
technicians. Improper installation, modification, service, or use can cause electrical shock, fire, explosion, or
other conditions which may cause personal injury, death, or property damage. Use appropriate safety gear
including safety glasses and gloves when installing this equipment.
Risk of electrical shock. Disconnect all remote power
supplies before installing or servicing any portion of the
system. Failure to disconnect power supplies can result
in property damage, personal injury, or death.
Installation and servicing of air conditioning equipment
can be hazardous due to internal refrigerant pressure
and live electrical components. Only trained and
qualified service personnel should install or service
this equipment. Installation and service performed by
unqualified persons can result in property damage,
personal injury, or death.
Sharp metal edges can cause injury. When installing
the unit, use care to avoid sharp edges.
506860-01
4SHP 16/18LS SERIES
Split System Heat Pump
WARNING
WARNING
WARNING
WARNING
INSTALLATION ....................................................2
CONNECTION DIAGRAM .....................................4
START-UP ...........................................................14
OPERATION ........................................................17
ALERT CODE ......................................................23
MAINTENANCE ..................................................28
WARRANTY ........................................................34
A Lennox International Inc. Company
Issue 1404
TABLE OF CONTENTS
Manufactured By
*P506860-01*
(p) 506860-01
Page 1 of 35
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Summary of Contents for Armstrong 4SHP 16 Series
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Page 1: Table Of Contents
INSTALLATION AND MAINTENANCE INSTRUCTIONS 4SHP 16/18LS SERIES Split System Heat Pump These instructions must be read and understood completely before attempting installation. WARNING The equipment covered in this manual is to be installed by trained and experienced service and installation technicians. -
Page 2: Installation
INSTALLATION Inspection of Shipment Upon receipt of equipment, carefully inspect it for possible shipping damage. If damage is found, it should be noted on General the carrier’s freight bill. Take special care to examine the unit Read this entire instruction manual, as well as the inside the carton if the carton is damaged. - Page 3 • Install the unit high enough above the ground or roof to If unit coil cannot be mounted away from prevailing winter allow adequate drainage of defrost water and prevent winds, a wind barrier should be constructed (See Figure 3). ice buildup.
- Page 4 Non Communicating Thermostat Designations Typical Field Wiring Diagram Some connections may not apply. Refer to NON-COMMUNICATING specific thermostat and indoor unit.) Figure 4 1. Install line voltage power supply to unit from a properly sized disconnect switch. Any excess high voltage field wiring should be trimmed or secured away from the low voltage field wiring.
- Page 5 FIELD WIRING & ROUTING - COMMUNICATING CONTROLS Maximum length of wiring (18 gauge) for all connections on the RSBus is 1500 feet (457 meters). Wires should be color coded, with a temperature rating of 95ºF (35ºC) minimum, and solid core (Class II Rated Wiring). All low voltage wiring must enter unit through provided bushing installed in electrical inlet.
- Page 6 Placement 4. Remove the Schrader core assemblies before brazing Be aware that some localities are adopting sound ordinances to protect them from damage due to extreme heat. based on how noisy the unit is at the neighbor’s home, not Replace the cores when brazing is complete. at the original installation.
- Page 7 Field refrigerant piping consists of liquid and suction lines from the outdoor unit (sweat connections) to the indoor coil (flare or sweat connections). When flushing existing line set and/or indoor coil, be sure to Select line set diameters from Table 2 to ensure that oil empty all existing traps.
- Page 8 Refrigerant Line Sets: Transistion from Vertical to Horizontal Automotive Anchored Muffler-Type Heavy Nylon Hanger Wire Tie Strap Liquid Strap Liquid Line to Vapor Line to Vapor Line Wall Wall Line Stud Stud Liquid Line Liquid Line – Vapor Line Wrapped –...
- Page 9 Flushing Existing Line Set and Indoor Coil existing system. Refer to the gauges after shutdown to confirm that the entire system is completely void of This procedure should not be performed on systems refrigerant. Disconnect the liquid and suction lines from which contain contaminants, such as compressor burn the existing outdoor unit.
- Page 10 4. Remover the existing R-22 refrigerant flow control orifice or thermal expansion valve before continuing Metering Device Installation with flushing procedures. R-22 flow control devices are not approved for use with R-410A refrigerant and may prevent proper flushing. Use a field-provided fitting to reconnect the lines.
- Page 11 Suction Line (Ball Type) Service Valve 3. Connect the external equalizer line to the equalizer port on the suction line and tighten to 8 ft.lbs. Suction line (ball type) service valves function the same way as the other valves; the difference is in the construction 4.
- Page 12 3. Open the high pressure side of the manifold to allow R410A into the line set and indoor unit. Weigh in a trace amount of R410A. (A trace amount is a maximum of 2 oz. of refrigerant or 3 lbs. pressure.) Close the valve on the R410A cylinder and the valve on the high pressure side of the manifold gauge set.
- Page 13 4. Open both manifold valves and start vacuum pump. 5. Evacuate the line set and indoor unit to a minimum of 500 microns or lower. During the early stages of evacuation, it is desirable to close the manifold gauge valve at least once to determine if there is a rapid rise in pressure.
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Page 14: Start-Up
START-UP Units are factory charged with the amount of R410A refrigerant indicated on the unit rating plate. This charge is based on a matching indoor coil and outdoor coil with 15’ CAUTION line set. For varying lengths of line set, refer to Table 4 for refrigerant charge adjustment. - Page 15 Figure 15 Measure the liquid line temperature and the outdoor ambient 1. Recover the refrigerant from the unit. temperature as outlined below: 1. Connect the manifold gauge set to the service valve 2. Conduct a leak check, then evacuate as previously ports as follows (See Figure 15 above): outlined.
- Page 16 R-410A Temperature/Pressure Chart T e m p . P re s s u re T e m p . P re s s u re T e m p . P re s s u re P s ig P s ig P s ig F F...
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Page 17: Operation
OPERATION Outdoor unit and indoor blower cycle on demand from the room thermostat. When the thermostat blower switch is moved to the ON position, the indoor blower operates continuously. 6. Compare the approach value with those shown in Table Filter Drier 7. - Page 18 4SHP18 L - Liquid S - Suction Values provided above are typical pressures. Indoor unit matchup, indoor air quality equipement, and indoor load will cause pressures to vary. Table 8 Page 18 of 35 Issue 1404 506860-01...
- Page 19 4SHP16 L - Liquid S- Suction Values provided above are typical pressures. Indoor unit matchup, indoor air quality equipment, and indoor load will case pressures to vary. Table 8 506860-01 Issue 1404 Page 19 of 35...
- Page 20 DEFROST CONTROL BOARD Figure 16 Page 20 of 35 Issue 1404 506860-01...
- Page 21 SECOND STAGE LOCK-IN (J2) Heat Pump Control-Defrost Operation If first stage compressor output is active in heating modeand the outdoor ambient temperature is below the The defrost termination pins must be set on the heat pump selected compressor lock in temperature, the second stage control prior to starting the system to ensure proper defrost compressor solenoid output will be energized even without operation.
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Page 22: Alert Code
RESETTING ALERT CODES Time Delay The timed-off delay is 5 minutes long. The delay helps to Alert codes can be reset manually or automatically: protect the compressor from short cycling in case the power to the unit is interrupted or a pressure switch opens. 4. - Page 23 506860-01 Issue 1404 Page 23 of 35...
- Page 24 Table 9. Seven-Segment Display Alert Codes (continued) NOTE: Additional codes may be found in icomfort room thermostat manual Table 10. Outdoor Control Seven-Segment Unit Status Displays Page 24 of 35 Issue 1404 506860-01...
- Page 25 * Information will be displayed but does not apply to this unit does 506860-01 Issue 1404 Page 25 of 35...
- Page 26 * Information will be displayed but does not apply to this product Page 26 of 35 Issue 1404 506860-01...
- Page 27 506860-01 Issue 1404 Page 27 of 35...
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Page 28: Maintenance
MAINTENANCE WARNING Before performing maintenance operations on system, turn the electric power to unit OFF at disconnect switch(es). Unit may have multiple power supplies. Electrical shock could cause personal injury or death. Before the start of each heating and cooling season, the following service checks should be performed by a qualified service technician. -
Page 29: Homeowner Information
HOMEOWNER INFORMATION to substances which are corrosive or which block airflow across the coil (such as pet urine, cottonwood seeds, etc...). In order to ensure peak performance, your system must be Heat Pump Operation properly maintained. Clogged filters and blocked airflow Heat pump units have several characteristics you should prevent your unit from operating at its most efficient level. - Page 30 Fan Switch Preservice Check In AUTO or INT (intermittent) mode, the blower operates If your system fails to operate, check the following before only when the thermostat calls for heating or cooling. This calling for service: mode is generally preferred when humidity control is a priority.
- Page 31 Start-Up and Performance Checklist Job Name _____________________________ Job No. ____________ Date ___________ Job Location ___________________________ City _______________ State ___________ Installer _______________________________ City _______________ State ___________ Unit Model No. _________________________ Serial No._____________________________ Service Technician _______________________ Nameplate Voltage _____________________ Rated Load Ampacity _________ Compressor Amperage ________ Outdoor Fan __________ Maximum Fuse or Circuit Breaker ________________________...
- Page 32 Page 32 of 35 Issue 1404 506860-01...
- Page 33 506860-01 Issue 1404 Page 33 of 35...
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Page 34: Warranty
ALLIED AIR ENTERPRISES EQUIPMENT LIMITED WARRANTY APPLIES IN U.S.A. AND CANADA ONLY FAILURE TO MAINTAIN YOUR EQUIPMENT WILL VOID THIS WARRANTY COVERED EQUIPMENT The following Allied Air Enterprises heating and cooling equipment is covered by the Limited Warranty, Condensing Units: 2SCU13, 4SCU13, 4SCU14, 4SCU16, 4SCU18, 2AC13, 2AC14, 4AC13, 4AC14 Heat Pumps: 2SHP13, 4SHP13, 2SHP14, 4SHP14, 4SHP16, 4SHP18, 2HP13, 2HP14, 4HP13, 4HP14, 4HP16, 4HP18 Gas Furnaces: G1N80, G1D80, G2D80, G1D91, G1D93, G2D93, G2D95, FPBB, CG80, CG90, CG92, CG93, CG95, A97, A96, A95, A952V, A93, A80, 95G2, 95G2V, 95G1, 92G1, 80G2, 80G1 Oil Furnaces: LBR80, LBF80, LHF80, LUF80, LHR80, L83, RLUF, RLBF, RLBR, RLBU, RLHF, RLHR, ODHA, OLFA, OLRA, OUFA... - Page 35 5. Coils and air handlers are covered only when they are branded Armstrong, AirEase, Ducane, Concord or ADP and are purchased and newly installed as a system along with a qualifying unit. Except for ADP-branded products, coverage of other third party coils and air handlers are specifically excluded from this 5-Year Limited Extended Parts Warranty.
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