Carrier 25SCA5 Installation Instructions Manual

25SCA5
Single Stage Heat Pumps
®
with Puron 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
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
unnecessary turns and bends.
4. Leave some slack between structure and unit to absorb vibration.
5. When passing refrigerant tubes through the wall, seal opening with
RTV 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 surrounds
. When
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.
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
refrigerant
residential applications including long line.
IMPORTANT: Always install the factory–supplied liquid–line filter
drier. Obtain replacement filter driers from your distributor or branch.
OUTDOOR WALL INDOOR WALL
CAULK
SUCTION TUBE
INSULATION
THROUGH THE WALL
HANGER STRAP
(AROUND SUCTION
INSULATION
TUBE ONLY)
1" (25.4 mm)
MIN
SUSPENSION
Fig. 1 – Connecting Tubing Installation
LIQUID TUBE
JOIST
SUCTION TUBE
LIQUID TUBE
A07588