Lezeti DC4812VRF User manual

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Notice To Owner/Installer
This unit is designed for installation by an experienced person. It is legal for a homeowner
to install it, however we highly recommend using a licensed HVAC technician for
installation. There is high-voltage DC power used inside and outside of the unit.
There are capacitors inside the unit that may contain dangerous levels of power
even after the unit has been disconnected from its power source. The power must be
disconnected and all of the capacitors must be discharged before servicing the system.
Legal Information About Self-Installing R-410A Air Conditioners
Can a homeowner install this system?
Yes, a homeowner with a vacuum pump, proper training, and equipment can install this
unit. Unless you are experienced with installing air conditioners we recommend you hire a
professional installer. The person who installs the system must do all work in compliance
with local building and electrical codes.
Are there any restrictions on the purchase of R410A refrigerants?
R-410A is not an ozone-depleting substance. At this time the purchase of R-410A
refrigerant is not restricted in the US. There is no technician certification requirement for
those that purchase HFC refrigerants, such as R-410a or R-134a. If you are not licensed,
some local HVAC supply companies may refuse to sell you R410A based on a
misunderstanding of the law, or because they wish to discourage homeowners from
working on their own systems.
Are there any restrictions on the use of R410A refrigerants?
Yes, it is illegal to knowingly vent or release these refrigerants. The venting prohibition
applies to R410A, and all other HFC refrigerants, just as it does for ozone-depleting
refrigerants like R-22.
Is EPA technician certification required to service R410A systems?
No, at this time EPA technician certification is not required in order to service R-410a
systems.
Source: http://www.epa.gov/ozone/title6/phaseout/technicians_contractors_faq.html
Manufacturer recommends that only a licensed air conditioning
contractor be allowed to install or service this unit. For any
questions contact your local distributor. www.lezeti-tech.com
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Cover Page
1
Notice To Owner/Installer
2
Capacitor Warning
3
Table of Contents
4
Safety Precautions
5
Selecting Installation Location
6
Indoor Unit Installation
7
Connecting Power Cables
10
Outdoor Unit Installation
13
Recharging Empty Unit
17
Outdoor Electrical
19
Battery Plant
22
Solar Installation
23
Charge Controller
25
Cabling, Mounting, Grounding
27
Generator Tie-In
28
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Version(1.4( DC4812VRF( ( ( ( (( (

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DC4812VRF Air Conditioner Minimum Wire Gauge Sizing Chart for Connecting Outdoor Power
Distance
10 ft. 20 ft. 30 ft. 40 ft. 50 ft. 75 ft. 100 ft.
Recommended AWG
AWG AWG AWG AWG AWG AWG AWG
Solar PV to Charge Controller
12 12 12 12 12 10 10
Charge Controller to Batteries
12 10 NA NA NA NA NA
Batteries to ODU
10 10 10 10 8 7 6
Version(1.4( DC4812VRF( ( ( ( (( (
DC4812VRF Air Conditioner Minimum Wire Gauge Sizing for Connecting ODU to IDU
Distance
10 ft. 20 ft. 30 ft. 40 ft. 50 ft. 75 ft.
Recommended AWG
AWG AWG AWG AWG AWG AWG
Connections Marked “+’’ and “-”
14 14 14 14 12 12
Connections Marked “P”
14 14 14 14 12 12
Connections Marked “S” Shielded
14 14 14 14 12 12
Ground Wire Connection
14 14 14 14 12 12

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Outer
diam.!
!
A(mm)!
!
Max.!
!
Min.!
!
6.35mm
or 1/4 “!1.3!0.7!
12.7mm
or 1/2 “ !1.8!1.0!
Outer diam.!Tightening
torque(N.cm)!Additional tightening torque(N.cm)!
6.35mm or 1/4”!1500(153kgf.cm)!1600(163kgf.cm)!
12.7mm or 1/2”!
!3500(357kgf.cm!3600(367kgf.cm)!
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Connective pipe
length!Air purging method!
!Additional amount of refrigerant to be charged! !
Less than 7.5m!
!Use vacuum pump! !-------------!
!
More than 7.5m!
!
Use vacuum pump!
!Liquid side:6.35mm R410A:
(Pipe length-7.5)x20g/m!Liquid side:|9.52mm:! R410A: (Pipe length-7.5)x40g/m!
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Code Requirements
All installations must comply with national and local
electrical codes; professional installation is
recommended.
NEC requires ground fault protection for residential
PV installations. For more information, see NEC 690.5.

• The GFDI meets the requirements of the 2008 NEC
section 690.5 (A) through (C)
to reduce re hazards when wired according to the
wiring diagram contained in these instructions.

• All power production from PV array charge
controllers ceases when the breakers trip and remove
their connection to the batteries.
Version(1.4( DC4812VRF( ( ( ( (( (