Safety Considerations; General; System Requirements; Piping - Carrier 40GRQ Installation Instruction

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air- conditioning equipment
can be hazardous due to system pressures, electrical components,
and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start- up, and service this equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning coils. All other operations should be performed by
trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
quenching cloth and fire extinguisher nearby when brazing. Use
care in handling, rigging, and setting bulky equipment.
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 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.
Max. Piping Length with no additional refrigerant charge

Piping

Additional refrigerant charge (between Standard – Max piping length)
Refrigerant
* Charge is for piping that runs up to 25 ft. (7.6 m)
** For piping runs greater than 25 ft. (7.6 m), add specified amount of charge per foot of extra piping, up to the allowable length.
*** EXV - Electronic Expansion Device, Capillary tubes are used as metering devices
Table 2— Maximum Lengths
System Size
Min. Piping Length
Standard Piping Length
Max. outdoor- indoor height difference
Max. Piping Length
Gas Pipe (size - connection type)
Liquid Pipe (size - connection type)
Refrigerant Type
Charge Amount
!
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.
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must be
a 6 in. (152 mm) vertical rise to the valve connections on
! !
.
the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section
during extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start- up.
These instructions cover the installation, start- up and servicing of
outdoor and indoor units ductless systems.

SYSTEM REQUIREMENTS

Allow sufficient space for airflow and servicing unit. See Fig. 4 for
minimum required distances between unit and walls or ceilings.
Piping
IMPORTANT: Both refrigerant lines must be insulated
separately.
S Minimum refrigerant line length between the indoor and outdoor
units is 10 ft. (3 m).
S The following maximum lengths are allowed.
ft (m)
ft (m)
ft (m)
ft (m)
ft (m)
Oz/ft
(g/M)
in
in
Lbs
(kg)
2
WARNING
CAUTION

GENERAL

9K 12K
(208- 23 V) (208- 230 V)
10 (3) 10 (3)
25 (7.6) 25 (7.6)
32.8 (9.9) 32.8 (9.9)
25 (7.6) 25 (7.6)
82 (25) 82 (25)
0.2 (18.6) 0.2 (18.6)
1/4 flare 1/4 flare
connection connection
1/2 flare 1/2 flare
connection connection
R410A R410A
3.1 (1.4) 3.1 (1.4)
18K
(208- 230 V)
10 (3)
25 (7.6)
32.8 (9.9)
25 (7.6)
82 (25)
0.2 (18.6)
1/4 flare
connection
5/8 flare
connection
R410A
3.1 (1.4)