Daikin EKHBRD-AY1, Installation Manual

Installation manual

17

EKHBRD011~Y1

Indoor unit for air to water heat pump system

4PW54465-1C

For Y1 unit types only (3~)

When the indoor and outdoor unit are connected to a benefit kWh
rate power supply, the voltage free contact of the receiver controlling
the benefit kWh rate signal of the electricity company must be
connected to clamps 7 and 8 of X3M (as illustrated in the figure
above).

When parameter [6-04]=1 at the moment that the benefit kWh rate
signal is sent by the electricity company, that contact will open and
the unit will go in forced off mode

(1)

.

When parameter [6-04]=2 at the moment that the benefit kWh rate
signal is sent by the electricity company, that contact will close and
the unit will go in forced off mode

(2)

.

Type 1

The benefit kWh rate power supply is of the type that power supply is
not interrupted.

Type 2

The benefit kWh rate power supply is of the type that power supply
will be interrupted after elapse of time.

Type 3

The benefit kWh rate power supply is of the type that power supply is
interrupted immediately.

S

TART

-

UP

AND

CONFIGURATION

The indoor unit should be configured by the installer to match the
installation environment (outdoor climate, installed options, etc.) and
user expertise.

Pre-operation checks

After the installation of the unit, check the following:

1

Field wiring

Make sure that the field wiring has been carried out according to
the instructions described in the chapter 

"Electrical wiring work"

on page 13

, according to the wiring diagrams and according to

European and national regulations.

2

Fuses and protection devices

Check that the fuses and other locally installed protection
devices are of the size and type specified in the chapter

"Electrical specifications" on page 36

. Make sure that neither a

fuse nor a protection device has been bypassed.

3

Earth wiring

Make sure that the earth wires have been connected properly
and that the earth terminals are tightened.

4

Internal wiring

Visually check the switch box and the inside of the unit on loose
connections or damaged electrical components.

5

Installation

Check that the unit is properly installed, to avoid abnormal
noises and vibrations when starting up the unit.

6

Damaged equipment

Check the inside of the unit on damaged components or
squeezed pipes.

7

Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.

Do not touch any refrigerant which has leaked out of refrigerant
piping connections.
This may result in frostbite.

8

Water leak

Check the inside of the unit on water leakage. In case there is a
water leakage close the water inlet and water outlet shut-off
valves and call your local dealer.

1

Benefit kWh rate power supply box

2

Receiver controlling the signal of the electricity company

3

Benefit kWh rate power supply

4

Voltage free contact to indoor unit

5

Normal kWh rate power supply

6

Fuse (field supply)

In case of benefit kWh rate power supply installation,
remove the wiring bridges on X2M before installing the
normal kWh rate power supply.

(1) When the signal is released again, the voltage free contact will close and the unit 

will restart operation. It is therefore important to leave the auto restart function 
enabled. Refer to field setting "[8] Option setup, [8-01]" in the chapter 

"Field 

settings" on page 18

.

(2) When the signal is released again, the voltage free contact will open and the unit 

will restart operation. It is therefore important to leave the auto restart function 
enabled. Refer to field setting "[8] Option setup, [8-01]" in the chapter 

"Field 

settings" on page 18

.

1

2

3

X3M

7

8

X2M

8

9

2

4

1

3

5

3

L1

N

2

1

L2L3

L1

N

L2L3

4

3

4

4

3

2

1

S1S

S1S

S1S

[6-04]=1

1

2

3

2

1

3

2

1

4

3

4

4

3

L N

2

1

S1S

S1S

S1S

[6-04]=2

L1 L2

X1M

N X1M

L3

X2M

10 11

8

9

6

L1

N

L2L3

L1

N

L2L3

L1

N

L2L3

L1

N

L2L3

6

NOTE

If the benefit kWh rate power supply is of the type that
power supply is not interrupted, the unit will be forced
to off.

It is important that all  information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.

Switch off the power supply before making any
connections.