Part 3: Installation Requirements; Part 4: Electrical Requirements - Haier FlexFit Series Single Specification Manual

SYSTEM

Part 3: Installation Requirements

3.1 Lineset
A. The connecting refrigerant lines between the indoor and outdoor units are to be supplied by the installer.
B. The tubing must be annealed ACR-type copper, meeting ASTM B280 standards.
C. The connecting tubing between the outdoor and indoor units shall be continuous in all possible situations.
D. The tubing ends must be reamed inside and out, and must be flared using a 45° flaring tool approved for
R-410A.
E. Connections to the indoor and outdoor units shall be made with flare nuts that are supplied with the individual
units.
F. The flare nuts must be attached to indoor and outdoor units using a torque wrench and
back-up wrench.
G. Each tube must be insulated with a minimum of 1/2 inch (12.7mm) closed-foam insulation that is UV resistant
and meets ASTM Standard E84 25/50 flame spread/smoke development.
H. The lineset between the indoor and outdoor must not exceed the listed maximum length and maximum height
difference. See chart below.
System Models
1U12LC2VHA / AB12SC2VHA
1U12LC2VHA/ AD12SL2VHB
1U12LC2VHA / AW12LC2VHB
1U18LC2VHA / AB18SC2VHA
1U18LC2VHA / AD18SL2VHB
1U18LC2VHA / AW18LC2VHB
1U24LP2VHA / AL24LP2VHA
1U24LP2VHA / AM24LP2VHA
1U24LP2VHA / AW24LP2VHA
1U36LP2VHA / AL36LP2VHA
1U36LP2VHA / AM36LP2VHA
1U36LP2VHA / AW36LP2VHA
1U48LP2VHA / AL48LP2VHA
1U48LP2VHA / AM48LP2VHA
I. The lineset connected to 1U24LP2VHA and 1U36LP2VHA shall be capable of being up to 165ft (50m) long.
J. The lineset connected to a 1U48LP2VHA shall be capable of being up to 230ft (70m) long.

Part 4: Electrical Requirements

4.1 Electrical Supply
A. The operating electrical requirements shall be 208/230 volts AC, single-phase, 60 hertz. Voltage supplied to
the outdoor unit must be between 187-253 volts.
B. Power supply must be installed in accordance to NEC standards.
4.2 Connecting Wire to Indoor
A. Connecting cable between the indoor unit(s) must be made with 4 conductor - 14 AWG stranded copper wire.
B. Connecting wire must be continuous (without break) unless local code requires power disconnect next to
indoor unit. See indoor electrical section 3.1 for the specification.
31-5000407 Rev. 0
Pipe Size Torque
1/4 12 lb/ft 16.3 Nm 0.327-0.343
3/8 27 lb/ft 36.6 Nm 0.472-0.488
1/2 40 lb/ft 54.2 Nm 0.488-0.654
5/8 50 lb/ft 67.8 Nm 0.732-0.748
3/4 80 lb/ft 108.5 Nm 0.902-0.917
Liquid Vapor Minimum Length
1/4 in 3/8 in 6ft (1.8m)
1/4 in 3/8 in 6ft (1.8m)
1/4 in 3/8 in 6ft (1.8m)
1/4 in 1/2 in 6ft (1.8m)
1/4 in 1/2 in 6ft (1.8m)
1/4 in 1/2 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
3/8 in 5/8 in 6ft (1.8m)
A (inch) Flare Shape
A
Maximum Length Maximum Height Difference
66ft (20m)
66ft (20m)
66ft (20m)
83ft (25.3m)
83ft (25.3m)
83ft (25.3m)
165ft (50m)
165ft (50m)
165ft (50m)
165ft (50m)
165ft (50m)
165ft (50m)
230ft (75m)
230ft (75m)
50 ft (15 m)
50 ft (15 m)
50 ft (15 m)
50 ft (15 m)
50 ft (15 m)
50 ft (15 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
13