Carrier CH16NA - User Manual

Installation Instructions
CH14NB, CH16NA
SPLIT–SYSTEM HEAT PUMP
WITH R–410A REFRIGERANT
1--1/2 T O 5 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
!
!
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these sign al 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.
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 testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
!
WARNING
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installation of equipment.
1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate
for unit capacity.
3. Run refrigerant tubes as directly as possible by avoiding un-
necessary turns and bends.
4. Leave some slack between structure and unit to absorb vi-
bration.
5. When passing refrigerant tubes through the wall, seal open-
ing with R TV or other pliable silicon–based caulk (see Fig.
1).
6. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with
tubing (see Fig. 1).
8. Ensure that tubing insulation is pliable and completely sur-
rounds vapor tube.
9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation (see Fig. 1).
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
INSULATION
SUCTION TUBE
LIQUID TUBE
OUTDOOR WALL INDOOR WALL
LIQUID TUBE
SUCTION TUBE
INSULATION
CAULK
HANGER STRAP
(AROUND SUCTION
TUBE ONLY)
JOIST
1” (25.4 mm)
MIN
THROUGH THE WALL
SUSPENSION
A07588
Fig. 1 – Connecting Tubing Installation
When outdoor unit is connected to factory–approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
AHRI rated indoor unit when connected by 15 ft. (4.57 m) of
field–supplied or factory accessory tubing. For proper unit
operation, check refrigerant charge using charging information
located on control box cover and/or in the Check Charge section of
this instruction.
IMPORTANT: Maximum liquid–line size is 3/8–in. OD for all
residential applications including long line.
IMPORTANT: Always install the factory–supplied liquid–line
filter drier. Obtain replacement filter driers from your distributor or
branch.

Summary

Safety Considerations

Electrical Shock Hazard

Warning regarding electrical shock during installation or servicing.

Explosion Hazard

Warning about explosion risk when using oxygen with gases.

Installation Recommendations

Installation Procedures

Cut Hazard

Warning about sharp edges on sheet metal parts.

Check Equipment and Job Site

Steps for unpacking and inspecting the unit.

Install on a Solid, Level Mounting Pad

Guidelines for properly mounting the unit on a stable pad.

Clearance Requirements

Specifies necessary spacing for airflow and service access.

Operating Ambient

Details operating temperature ranges for cooling and heating modes.

Check Defrost Thermostat

Instructions to check the defrost thermostat's location and attachment.

Elevate Unit

Requirement to elevate the unit for drainage and snow clearance.

Make Piping Connections

Instructions for connecting refrigerant lines.

Service Valves

Procedures for handling service valves and piston installation.

Brazing Connections

Guidance on brazing refrigerant lines to service valves.

Installing with Indoor Piston

Procedure for installing the correct piston in the indoor unit.

Install Liquid Line Filter Drier Indoor

Steps for installing the liquid line filter drier.

Evacuate Refrigerant Tubing and Indoor Coil

Method for evacuating the system to remove air and moisture.

Deep Vacuum Method

Detailed procedure for deep vacuum evacuation.

Final Tubing Check

Final checks on tubing to prevent damage.

Make Electrical Connections

Instructions for making electrical connections.

Connect Control Wiring

Guidance for connecting 24v control wiring.

Final Wiring Check

Verifying the security and routing of wiring.

Compressor Crankcase Heater

Instructions for powering the compressor crankcase heater.

Install Electrical Accessories

Refers to instructions for installing kits/accessories.

Start-Up

Steps for safely starting up the system.

Sequence of Operation

Explains how the system operates in cooling and heating modes.

Defrost Control

Charge Check

Units with Cooling Mode TXV

Procedure for checking refrigerant charge using the subcooling method.

Units with Indoor Pistons

Procedure for checking refrigerant charge using the superheat method.

Heating Check Chart Procedure

Reference for checking system operation during heating cycle.

Final Checks

Care and Maintenance

Carrier CH16NA Specifications

General

Type	Heat Pump
SEER Rating	Up to 16
HSPF Rating	Up to 9.0
Refrigerant	R-410A
Voltage	208/230V
Stages	1
Phase	Single