Installation manual
20
EKHBH/X008BA
Indoor unit for air to water heat pump system
4PW54185-1B
When the outdoor unit is 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 17 and 18 of X2M (as illustrated in the figure above).
When parameter [D-01]=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 [D-01]=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
This type of benefit kWh rate power supply is not interrupted.
Type 2
This type of benefit kWh rate power supply is interrupted after elapse
of time.
Type 3
This type of benefit kWh rate power supply is interrupted
immediately.
Relocation of the digital controller
The digital controller is from factory located on the indoor unit. (See
for actual position). If required, the
digital controller can be repositioned.
Be aware that only 1 digital controller can be connected to the indoor
unit.
Wiring specifications
Mounting
1
Remove the front part of the digital controller.
Insert a slotted screwdriver into the slots (1)
in the rear part of the digital controller, and
remove the front part of the digital
controller.
2
Fasten the digital controller on a flat
surface.
3
Wire the unit.
Connect the terminals on top of the front part of the digital
controller and the terminals inside the unit (P1 to 16, P2 to 16a).
4
Reattach the upper part of the digital controller.
First begin fitting from the clips at the
bottom.
(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
(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
When connecting the equipment to a benefit kWh rate
power supply, change field setting [D-01]. In case the
benefit kWh rate power supply is of the type that power
supply is not interrupted (like illustrated above as type 1)
change both field settings [D-01] and [D-00]. Refer to
Benefit kWh rate power supply/Local shift value
If the benefit kWh rate power supply is of the type that
power supply is not interrupted, the unit will be forced to
off. Controlling the solar pump is still possible.
When the benefit kWh rate signal is sent, the centralised
control indicator
e
will flash to indicate that the benefit
kWh rate is active.
Wire specification
Value
Type
2 wire
Section
0.75-1.25 mm
2
Maximum length
500 m
NOTE
The wiring for connection is not included.
NOTE
The digital controller has to be mounted indoors.
NOTE
Be careful not to distort the shape of the lower part of
the digital controller by over tightening the mounting
screws.
1
Unit
2
Rear part of the digital controller
3
Front part of the digital controller
4
Wired from the rear
5
Wired from the top
6
Notch the part for the wiring to pass through with nippers, etc.
NOTE
■
When wiring, run the wiring away from the
power supply wiring in order to avoid
receiving electric noise (external noise).
■
Peel the shield for the part
that has to pass through the
inside of the digital controller
case (
l
).
CAUTION
Be careful not to pinch the wiring when attaching.
1
P1
P2
1
1
6
2
3
4
5
P1
P2
16a
16
16a
16
1
