Carrier N4A7 Installation Instructions Manual

Installation INSTRUCTIONS
R- 410A 2- Stage Split System Air Conditioner

SAFETY CONSIDERATIONS

NOTE: Read the entire instruction manual before starting the
installation.
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 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 would 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 testing or operating
refrigerant compressors.
mixtures of air or gases containing
oxygen can lead to an explosion.
N4A7 (2 - 5 Tons)

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
2. Ensure that vapor and liquid tube diameters are appropriate
3. Run refrigerant tubes as directly as possible by avoiding
4. Leave some slack between structure and unit to absorb
5. When passing refrigerant tubes through the wall, seal
6. Avoid direct tubing contact with water pipes, duct work,
7. Do not suspend refrigerant tubing from joists and studs with
! !
.
8. Ensure that tubing insulation is pliable and completely
9. When necessary, use hanger straps which are 1 in. (25.4
10. Isolate hanger straps from insulation by using metal sleeves
The 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
Pressurized
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.
unit operation sound may disturb customer.
for unit capacity.
unnecessary turns and bends.
vibration.
opening with RTV or other pliable silicon- based caulk.
(See Fig. 1.)
floor joists, wall studs, floors, and walls.
a rigid wire or strap which comes in direct contact with
tubing.(See Fig. 1.)
surrounds vapor tube.
mm) wide and conform to shape of tubing insulation. (See
Fig. 1.)
bent to conform to shape of insulation.
OUTDOOR WALL INDOOR WALL
CAULK
INSULATION
THROUGH THE WALL
HANGER STRAP
(AROUND SUCTION
TUBE ONLY)
1" (25.4 mm)
MIN
SUSPENSION
Fig. 1 - Connecting Tubing Installation
421 01 5600 00 July/2017
LIQUID TUBE
SUCTION TUBE
JOIST
INSULATION
SUCTION TUBE
LIQUID TUBE
A07588