U-5~48MX3
Urban Multi air conditioner
4PW16235-1C
Installation manual
1
C
ONTENTS
Page
1. Introduction.................................................................................... 1
1.1. Combination .......................................................................................... 1
1.2. Standard supplied accessories ............................................................. 2
1.3. Optional accessories ............................................................................. 2
1.4. Technical and Electrical specifications .................................................. 2
2. Main components .......................................................................... 2
3. Selection of location....................................................................... 2
4. Inspecting and handling the unit....................................................3
5. Unpacking and placing the unit...................................................... 3
6. Refrigerant piping .......................................................................... 4
6.1. Selection of piping material ................................................................... 4
6.2. Connecting the refrigerant piping .......................................................... 4
6.3. Example of connection .......................................................................... 7
6.4. Leak test and vacuum drying ................................................................ 9
6.5. Pipe insulation ..................................................................................... 10
6.6. Additional refrigerant charge ............................................................... 10
7. Field wiring................................................................................... 11
7.1. Internal wiring – Parts table................................................................. 11
7.2. Optional parts cool/heat selector......................................................... 12
7.3. Power circuit and cable requirements.................................................. 12
7.4. General................................................................................................ 13
7.5. Examples............................................................................................. 13
8. Before operation .......................................................................... 16
8.1. Checks before initial start-up...............................................................16
8.2. Test run................................................................................................ 16
9. Caution for refrigerant leaks ........................................................17
1. I
NTRODUCTION
This installation manual concerns Urban Multi units of the Panasonic
MX3 series. These units are designed for outdoor installation and
used for cooling and heatpump applications. The MX3 series can be
combined from 6 main units and has nominal capacities ranging from
14.0 to 134 kW and nominal heating capacities ranging from 16.0 to
150 kW.
The MX3 units can be combined with Panasonic Urban Multi
indoor units for air conditioning purposes, and suitable for R-410A.
The present installation manual describes the procedures for
unpacking, installing and connecting the MX3 units. Installation of the
indoor units is not described in this manual. Always refer to the
installation manual supplied with these units for their installation.
1.1. Combination
The indoor units can be installed in the following range.
■
Always use appropriate indoor units compatible with R-410A.
To learn which models of indoor units are compatible with
R-410A, refer to the product catalogs.
■
Total capacity/quantity of indoor units
U-5~48MX3
Urban Multi air conditioner
Installation manual
READ THIS MANUAL ATTENTIVELY BEFORE STARTING
UP THE UNIT. DO NOT THROW IT AWAY. KEEP IT IN
YOUR FILES FOR FUTURE REFERENCE.
IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY
TO USE ACCESSORIES MADE BY PANASONIC WHICH
ARE SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR DEALER FOR ADVICE AND
INFORMATION.
The refrigerant R-410A requires strict cautions for keeping
the system clean, dry and tight.
■
Clean and dry
Foreign materials (including mineral oils such as
SUNISO oil or moisture) should be prevented from
getting mixed into the system.
■
Tight
R-410A does not contain any chlorine, does not
destroy the ozone layer, and does not reduce the
earth's protection against harmful ultraviolet radiation.
R-410A can contribute slightly to the greenhouse
effect if it is released. Therefore we should take
special attention to check the tightness of the
installation.
Read "6. Refrigerant piping" on page 4 carefully and follow
these procedures correctly.
Since design pressure is 3.8 MPa or 38 bar (for R-407C
units: 3.3 MPa or 33 bar), pipes of larger wall thickness may
be required. Refer to paragraph "6.1. Selection of piping
material" on page 4.
Outdoor unit Total capacity of
indoor units Total quantity of
indoor units
U-5MX3 (*) 62.5~162.5 8
U-8MX3 (*) 100~260 13
U-10MX3 (*) 125~325 16
U-12MX3 (*) 150~390 19
U-14MX3 (*) 175~455 20
U-16MX3 (*) 200~520 20
U-18MX3 225~585 20
U-20MX3 250~650 20
U-22MX3 275~715 22
U-24MX3 300~780 32
U-26MX3 325~845 32
U-28MX3 350~910 32
U-30MX3 375~975 32
U-32MX3 400~1040 32
U-34MX3 425~1105 34
U-36MX3 450~1170 36
U-38MX3 475~1235 38
U-40MX3 500~1300 40
U-42MX3 525~1365 40
U-44MX3 550~1430 40
U-46MX3 575~1495 40
U-48MX3 600~1560 40
(*) = main unit