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U-5~18MX4XPQ
C
ONTENTS
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 .................................................................. 3
4. Inspecting and handling the unit................................................ 4
5. Unpacking and placing the unit ................................................. 4
6. Refrigerant piping ...................................................................... 4
6.1. Installation tools ........................................................................... 5
6.2. Selection of piping material.......................................................... 5
6.3. Pipe connection ........................................................................... 5
6.4. Connecting the refrigerant piping................................................. 5
6.5. Protection against contamination when installing pipes .............. 7
6.6. Example of connection ................................................................ 8
7. Leak test and vacuum drying................................................... 10
8. Field wiring .............................................................................. 10
8.1. Internal wiring - Parts table ....................................................... 11
8.2. Optional parts cool/heat selector ............................................... 11
8.3. Power circuit and cable requirements ........................................ 12
8.4. General cautions........................................................................ 12
8.5. System examples....................................................................... 13
8.6. Leading power line and transmission line .................................. 13
and cool/heat selection .............................................................. 13
8.8. Field line connection: power wiring ............................................ 14
8.9. Wiring example for wiring inside unit ......................................... 15
9. Pipe insulation ......................................................................... 15
10. Checking of unit and installation conditions............................. 15
11. Charging refrigerant................................................................. 16
11.1. Precautions when adding R410A .............................................. 16
11.2. Stop valve operation procedure ................................................. 16
11.3. How to check how many units are connected............................ 16
11.4. Additional refrigerant charge...................................................... 17
11.5. Checks after adding refrigerant.................................................. 22
12. Before operation ...................................................................... 22
12.1. Service precautions ................................................................... 22
12.2. Checks before initial start-up ..................................................... 23
12.3. Field setting ............................................................................... 23
12.4. Test operation ............................................................................ 25
13. Service mode operation........................................................... 27
14. Caution for refrigerant leaks .................................................... 27
15. Disposal requirements............................................................. 28
READ THIS MANUAL ATTENTIVELY BEFORE STARTING
UP THE UNIT. DO NOT THROW IT AWAY. KEEP IT IN
YOUR FILES FOR FUTURE REFERENCE.
IMPROPER
INSTALLATION
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.
PANASONIC
EQUIPMENT
COMFORT APPLICATIONS. FOR USE IN OTHER
APPLICATIONS, PLEASE CONTACT YOUR LOCAL
PANASONIC DEALER.
IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR DEALER FOR ADVICE AND
INFORMATION.
THIS AIR CONDITIONER COMES UNDER THE TERM
"APPLIANCES NOT ACCESSIBLE TO THE GENERAL
PUBLIC".
Installation manual
1
Urban Multi air conditioner
Page
OR
ATTACHMENT
OF
IS
DESIGNED
FOR
The refrigerant charge of the system must be less than
100 kg. This means that in case the calculated refrigerant
charge is equal to or more than 95 kg you must divide your
multiple outdoor system into smaller independent systems,
each containing less than 95 kg refrigerant charge.
For factory charge, refer to the unit name plate.
The refrigerant R410A 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
R410A does not contain any chlorine, does not
destroy the ozone layer, and does not reduce the
earth's protection against harmful ultraviolet radiation.
R410A 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 4.0 MPa or 40 bar (for R407C
units: 3.3 MPa or 33 bar), pipes of larger wall thickness
may be required. The wall thickness of piping must be
carefully selected, refer to paragraph "6.2. Selection of
piping material" on page 5 for more details.
1.
I
NTRODUCTION
This installation manual concerns Urban Multi units of the Panasonic
U-MX4XPQ series. These units are designed for outdoor installation
and used for cooling and heat pump applications. The U-MX4XPQ
series can be combined from 7 main units and has nominal cooling
capacities ranging from 14.0 to 147 kW and nominal heating
capacities ranging from 16.0 to 170 kW.
The U-MX4XPQ units can be combined with Panasonic Urban Multi
indoor units for air conditioning purposes, and suitable for R410A.
The present installation manual describes the procedures for
unpacking, installing and connecting the U-MX4XPQ 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 R410A.
To learn which models of indoor units are compatible with
R410A, refer to the product catalogs.
Pay attention when connecting outdoor units in multi
combination. U-MX3XPQ(A) units are NOT compatible with
U-MX4XPQ units.
Installation manual
U-5~18MX4XPQ
Urban Multi air conditioner
4PW28163-1
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