Carrier C4H5S Installation Instructions Manual
Carrier C4H5S Installation Instructions Manual

Carrier C4H5S Installation Instructions Manual

Single-stage heat pump with r-410a refrigerant 1-1/2 to 5 nominal tons

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C4H5S, H4H5S, T4H5S
Single-Stage Heat Pump
with R-410A Refrigerant
1-1/2 To 5 Nominal Tons
NOTE: Read the entire instruction manual before starting the installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or
use can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury, or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory–authorized kits or accessories when modifying this product.
Refer to the individual instructions packaged with the kits or accessories
when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly and follow all
warnings or cautions included in literature and attached to the unit.
Consult local building codes and current editions of the National
Electrical Code (NEC) NFPA 70. In Canada, refer to current editions of
the Canadian electrical code CSA 22.1.
Recognize safety information. This is the safety–alert symbol
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury.
Understand these signal words; DANGER, WARNING, and CAUTION.
These words are used with the safety–alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury or
death.
WARNING signifies hazards which could result in personal
injury or death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position. There may be more than
1 disconnect switch. Lock out and tag switch with a suitable warning
label.
WARNING
!
EXPLOSION HAZARD
Failure to follow this warning could result in
death, serious personal injury, and/or property
damage.
Never use air or gases containing oxygen for
leak
compressors. Pressurized mixtures of air or
gases containing oxygen can lead to an
explosion.
Installation Instructions
testing
or
operating
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been traced to gas
pulsations from improper installation of equipment.
1. This unit is intended to be installed in a location that is 10,000 feet
(3000 meters) above sea level or lower.
2. Locate unit away from windows, patios, decks, etc. where unit
operation sound may disturb customer.
3. Ensure that vapor and liquid tube diameters are appropriate for unit
capacity.
4. Run refrigerant tubes with no bends with centerline bend radius less
than 2.5 times the external pipe diameter.
5. Leave some slack between structure and unit to absorb vibration.
6. When passing refrigerant tubes through the wall, seal opening with
RTV or other pliable silicon-based caulk. (See
7. Avoid direct tubing contact with water pipes, duct work, floor
joists, wall studs, floors, and walls.
. When
8. Do not suspend refrigerant tubing from joists and studs with a rigid
wire or strap which comes in direct contact with tubing (see
9. Ensure that tubing insulation is pliable and completely surrounds
vapor tube.
10. When necessary, use hanger straps which are 1 in. (25 mm) wide
and conform to shape of tubing insulation. (See
11. Isolate hanger straps from insulation by using metal sleeves bent to
conform to shape of insulation.
12. Provision shall be made for expansion and contraction of long runs
of piping.
13. Piping and fittings shall be protected as far as possible against
adverse environmental effects. For example, the accumulation of
dirt and debris.
14. Piping should be installed to reduce the likelihood of hydraulic
shock damaging the system.
15. Certified piping and components must be used in order to protect
against corrosion.
16. Flexible pipe elements shall be protected against mechanical
damage, excessive stress by torsion, or other forces. They should be
checked for mechanical damage annually.
17. Piping material, routing, and installation shall be include protection
from physical damage in operation and service, and be in
compliance with the national and local codes and standards of the
installation site.
18. When setting up refrigerant piping, precautions shall be taken to
avoid excessive vibration or pulsation
refrigerant
Fig.
1.)
Fig.
1).
Fig.
1.)

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Summary of Contents for Carrier C4H5S

  • Page 1 C4H5S, H4H5S, T4H5S Single-Stage Heat Pump with R-410A Refrigerant 1-1/2 To 5 Nominal Tons Installation Instructions NOTE: Read the entire instruction manual before starting the installation. SAFETY CONSIDERATIONS INSTALLATION RECOMMENDATIONS Improper installation, adjustment, alteration, service, maintenance, or NOTE: In some cases noise in the living area has been traced to gas use can cause explosion, fire, electrical shock, or other conditions which pulsations from improper installation of equipment.
  • Page 2: Clearance Requirements

    C4H5S, H4H5S, T4H5S: Installation Instructions Roof mounted units exposed to winds above 5 mph may require wind baffles. Consult the Service Manual – Residential Split System Air Conditioners and Heat Pumps for wind baffle construction. Unit must be level to within ±2° (±3/8 in/ft,±9.5 mm/m) per compressor manufacturer specifications.
  • Page 3: Make Piping Connections

    C4H5S, H4H5S, T4H5S: Installation Instructions Table 1 – Accessory Usage REQUIRED FOR REQUIRED FOR LOW–AMBIENT REQUIRED FOR SEA COAST Accessory COOLING APPLICATIONS LONG LINE APPLICATIONS APPLICATIONS (Within 2 (Below 55°F / 12.8°C) miles / 3.22 km) Accumulator Standard Standard Standard Ball Bearing Fan Motor †...
  • Page 4: Fire Hazard

    C4H5S, H4H5S, T4H5S: Installation Instructions CAUTION BURN HAZARD Failure to follow this Caution may result in personal injury. Components will be HOT after brazing. Wear appropriate personal protective equipment and allow to cool before handling parts and equipment Table 2 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)
  • Page 5: Electrical Shock Hazard

    C4H5S, H4H5S, T4H5S: Installation Instructions Mandatory Requirements Pressure Proof Check 1. Preform a pressure check of the unit with a nitrogen charge of about 200psi. 2. the Nitrogen holding charge must NOT decrease in pressure for 1 hour, as indicated by the test gauge. The measuring test gauge resolution not exceeding 5% of the holding charge.
  • Page 6: Compressor Crankcase Heater

    C4H5S, H4H5S, T4H5S: Installation Instructions Connect Ground and Power Wires Connect ground wire to ground connection in control box for safety. Connect power wiring to contactor as shown in Fig. A150065 Fig. 8 – Outdoor Air Thermistor (OAT) Attachment The Outdoor Coil Temperature (OCT) Thermistor is factory installed on A91056 Fig.
  • Page 7 C4H5S, H4H5S, T4H5S: Installation Instructions (26.67°C) before attempting to check system charge by subcooling CAUTION method as described above. If the indoor temperature is below 70°F (21.11°C), or the outdoor ENVIRONMENTAL HAZARD temperature is not in the favorable range, adjust charge for line set length above or below 15ft (4.57 m) only.
  • Page 8 C4H5S, H4H5S, T4H5S: Installation Instructions Communication and Status Function Lights valve will remain energized until the control board power is removed or a call for heating is initiated. Green Communications (COMM) Light (Communicating Control only): NOTE: The outdoor fan motor will continue to operate for one minute A green LED (COMM light) on the outdoor board (see Fig.
  • Page 9 C4H5S, H4H5S, T4H5S: Installation Instructions Time Delays The defrost cycle is terminated when the coil temperature reaches 65°F/18.33°C or 10 minutes has passed. The unit time delays include: If the coil temperature does not reach 32°F/0°C within the interval, the •...
  • Page 10: Major Components

    C4H5S, H4H5S, T4H5S: Installation Instructions Major Components 24V Brown Out Protection If the control voltage is less than 15.5 volts for at least 4 seconds, the Control Board compressor contactor and fan relay are de-energized. Compressor and The Heat Pump control board controls the following functions: fan operation are not allowed until control voltage is a minimum of 17.5...
  • Page 11 C4H5S, H4H5S, T4H5S: Installation Instructions Thermistor Sensor Comparison If there is a thermistor out of range error, defrost will occur at each time interval during heating operation, but will terminate after 5 minutes. The control continuously monitors and compares the outdoor air Thermistor Curve: The resistance vs.
  • Page 12: Check Charge

    C4H5S, H4H5S, T4H5S: Installation Instructions Check Charge Units with Indoor Pistons Units installed with indoor pistons require charging by the superheat Factory charge amount and desired subcooling are shown on unit rating method. plate. Additional subcooling may be required to achieve optimal heating performance based on the installed indoor unit.
  • Page 13 C4H5S, H4H5S, T4H5S: Installation Instructions Table 4 – Additional Subcooling Required Subcooling Delta from Rating Plate Value Outdoor Unit Tonnage Indoor unit | Additional Subcooling Required EA*4X19L17A* EA*4X25L17A* FM(C,U)4X30**AL* EA*4X37L21A* EA*4X43L21A* EA*4X25L17A* FM(C,U)4X24**AL* FM(C,U)4Z30**AL* EA*4X43L21A* EA*4X48*21A* EHD4X24A** FJMA4X30L* EA*4X37L21A* EA*4X48*24A*...
  • Page 14 C4H5S, H4H5S, T4H5S: Installation Instructions Table 6 – Superheat Charging (Heat Pump Only) EVAPORATOR ENTERING AIR TEMPERATURE (°F WB) OUTDOOR TEMP (°F) – – – – – – – – – – – – – – – – – –...
  • Page 15: Final Checks

    C4H5S, H4H5S, T4H5S: Installation Instructions Final Checks Care and Maintenance IMPORTANT: Before leaving job, be sure to do the following: For continuing high performance and to minimize possible equipment failure, periodic maintenance must be performed on this equipment. 1. Ensure that all wiring is routed away from tubing and sheet metal edges to prevent rub–through or wire pinching.
  • Page 16 C4H5S, H4H5S, T4H5S: Installation Instructions © 2022 Carrier. All rights reserved. Edition Date: 11/22 Catalog No: CHT4H5S-01SI A Carrier Company Replaces: New Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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