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Installation manual

RXYQ8~1 RXYQ8~12P7YLK

VRVIII System air conditioner

4PW41760-1

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 .................................................................. 3

4. Inspecting and handling the unit................................................ 4

5. Unpacking and placing the unit ................................................. 4

6. Refrigerant piping ...................................................................... 4

7. Leak test and vacuum drying .................................................. 10

8. Field wiring .............................................................................. 10

cool/heat selection ..................................................................... 13

8.8. Field line connection: power wiring ............................................ 15
8.9. Wiring example for wiring inside unit.......................................... 15

9. Pipe insulation ......................................................................... 16

10. Checking of unit and installation conditions ............................ 16

11. Charging refrigerant ................................................................ 16

11.1. Precautions when adding R410A ............................................... 16
11.2. Stop valve operation procedure ................................................. 17
11.3. How to check how many units are connected ............................ 17
11.4. Additional refrigerant charge ...................................................... 18
11.6. Checks after adding refrigerant .................................................. 23

12. Before operation ...................................................................... 24

12.1. Service precautions.................................................................... 24
12.2. Checks before initial start-up...................................................... 24
12.3. Field setting ................................................................................ 24
12.4. Test operation............................................................................. 26

13. Service mode operation .......................................................... 28

14. Caution for refrigerant leaks .................................................... 29

15. Disposal requirements............................................................. 29

NTRODUCTION

This installation manual concerns VRV inverters of the Daikin
RXYQ-P7 series. These units are designed for outdoor installation
and used for cooling and heat pump applications. The RXYQ-P7
series can be combined from 3 main units and has nominal cooling
capacities ranging from 17.7 to 81.6 kW and nominal heating
capacities ranging from 25.0 to 112.5 kW.

The RXYQ-P7 units can be combined with Daikin VRV indoor units
for air conditioning purposes, and suitable for R410A.

The present installation manual describes the procedures for
unpacking, installing and connecting the RXYQ-P7 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. RXYQ-M units are NOT compatible with RXYQ-P
units.

■

RXYQ_Y

K units are NOT compatible with RXYQ_Y

K units.

RXYQ8P7Y1K

RXYQ8P7YLK

RXYQ10P7Y1K

RXYQ10P7YLK

RXYQ12P7Y1K

RXYQ12P7YLK

VRVIII System 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 DAIKIN WHICH ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.

DAIKIN EQUIPMENT IS DESIGNED FOR COMFORT
APPLICATIONS. FOR USE IN OTHER APPLICATIONS,
PLEASE CONTACT YOUR LOCAL DAIKIN 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".

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.