Daikin RXYHQ12P8W1B, Installation Manual

Installation manual

1

RX(Y)Q5-10-1 RXQ RXYQ

RXYHQ1 RX(Y)Q14~18P7W1BA

VRVIII System air conditioner

4PW48461-1

C

ONTENTS

Page

1. Introduction................................................................................ 1

1.1. Combination ................................................................................. 2
1.2. Standard supplied accessories .................................................... 2
1.3. Optional accessories.................................................................... 3
1.4. Technical and Electrical specifications ......................................... 3

2. Main components ...................................................................... 3

3. Selection of location .................................................................. 3

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

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

6. Refrigerant piping ...................................................................... 5

6.1. Installation tools ........................................................................... 5
6.2. Selection of piping material .......................................................... 5
6.3. Pipe connection............................................................................ 6
6.4. Connecting the refrigerant piping ................................................. 6
6.5. Protection against contamination when installing pipes ............... 8
6.6. Example of connection ................................................................. 9

7. Leak test and vacuum drying .................................................. 11

8. Field wiring .............................................................................. 12

8.1. Internal wiring – Parts table........................................................ 12
8.2. Optional parts cool/heat selector................................................ 13
8.3. Power circuit and cable requirements ........................................ 13
8.4. General cautions ........................................................................ 14
8.5. System examples ....................................................................... 15
8.6. Leading power line and transmission line .................................. 15
8.7. Field line connection: transmission wiring 

and cool/heat selection .............................................................. 16

8.8. Field line connection: power wiring ............................................ 17
8.9. Wiring example for wiring inside unit.......................................... 17

9. Pipe insulation ......................................................................... 18

10. Checking of unit and installation conditions ............................ 18

11. Charging refrigerant ................................................................ 18

11.1. Important information regarding the refrigerant used................. 18
11.2. Precautions when adding R410A ............................................... 19
11.3. Stop valve operation procedure ................................................. 19
11.4. How to check how many units are connected ............................ 19
11.5. Additional refrigerant charge ...................................................... 20
11.6. Checks after adding refrigerant .................................................. 24

12. Before operation ...................................................................... 25

12.1. Service precautions.................................................................... 25
12.2. Checks before initial start-up...................................................... 25
12.3. Field setting ................................................................................ 25
12.4. Test operation............................................................................. 27

13. Service mode operation .......................................................... 29

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

15. Disposal requirements............................................................. 30

1.

I

NTRODUCTION

This installation manual concerns VRV inverters of the Daikin
RX(Y)Q-P + RXYHQ series. These units are designed for outdoor
installation and used for cooling and heat pump applications. The
RXQ-P7 cooling only series consist of 7 main stand-alone units and
has nominal cooling capacities ranging from 14.0 to 49.0 kW. The
RXY(H)Q-P series can be combined from 8 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 RX(Y)Q-P + RXYHQ 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 RX(Y)Q-P + RXYHQ 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.

RXQ5~12P7W1B

RXYHQ12P8W1B

RXQ14~18P7W1BA

RXYQ14~18P7W1BA

RXYQ5-10-12P7W1B
RXYQ8P8W1B

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 5

 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.