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.
Part 4: Electrical Requirements
4.1 Electrical Supply
A. The 1U09TE1VHA and 1U12TE1VHA heat pump models shall be 115 volts AC, single-phase, 60 hertz. Voltage
limitation supplied to the outdoor shall be between 104~127 volts.
B. The 1U18TE2VHA and 1U24TE2VHA heat pump models shall be 208/230 volts AC, single-phase, 60 hertz.
Voltage limitation supplied to the outdoor shall be between 187~253 volts.
C. 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.
8
Pipe Size
Torque
1/4
12 lb/ft 16.3 Nm
3/8
27 lb/ft 36.6 Nm
1/2
40 lb/ft 54.2 Nm
5/8
50 lb/ft 67.8 Nm
3/4
80 lb/ft 108.5 Nm
System
Liquid Vapor
Models
1U09TE1VHA
1/4 in
3/8 in
AW09TE1VHA
1U12TE1VHA
1/4 in
3/8 in
AW12TE1VHA
1U18TE2VHA
1/4 in
1/2 in
AW18TE2VHA
1U24TE2VHA
1/4 in
1/2 in
AW24TE2VHA
A (inch)
Flare Shape
0.327-0.343
0.472-0.488
A
0.488-0.654
0.732-0.748
0.902-0.917
Minimum
Maximum
Maximum
Length
Length
Height
Difference
6ft (1.8m)
66ft
50 ft
(20m)
(15.25)
6ft (1.8m)
66ft
50 ft
(20m)
(15.25)
6ft (1.8m)
83ft
50 ft
(25.3m)
(15.25)
6ft (1.8m)
83ft
50 ft
(25.3m)
(15.25)
31-5000408 Rev. 0