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Installation manual
20
EKCBX/H008BBV3
Unit for air to water heat pump system
4PW66983-1C – 08.2011
Connection to a benefit kWh rate power supply
Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often authorized
to bill clients at benefit rates. E.g. time-of-use rates, seasonal rates,
Wärmepumpentarif in Germany and Austria, ...
This equipment allows for connection to such benefit rate power
supply delivery systems.
Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the benefit kWh rate
power supply delivery systems available, if any.
When the equipment is connected to such benefit kWh rate power
supply, the electricity company is allowed to:
■
interrupt power supply to the equipment for certain periods of
time;
■
demand that the equipment only consumes a limited amount of
electricity during certain periods of time.
The indoor unit is designed to receive an input signal by which the
unit switches into forced off mode. At that moment, the outdoor unit
compressor will not operate.
Possible types of benefit kWh rate power supply
Possible connections and requirements to connect the equipment to
such power supply are illustrated in the figure below:
1
Benefit kWh rate power supply box
2
Receiver controlling the signal of the electricity company
3
Power supply to outdoor unit (refer to the installation
manual delivered with the outdoor unit)
4
Voltage free contact to indoor unit
5
Normal kWh rate power supply
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.
Connect the indoor unit to a normal kWh rate power supply
If the benefit kWh rate power supply is of type 2 or 3 (power
interruption of main power supply to outdoor unit), the indoor unit
should be connected to a normal kWh rate power supply to allow
continuous indoor control and operation (e.g., pump).
Disconnect terminal X6YA from X6Y and connect X6YB to X6Y.
1
2
3
X2M
17 18
30 31
L N
X40A
A1P
L N
2
4
1
3
5
3
L N
2
1
4
3
4
3
L N
2
1
S2S
S2S
S2S
[d-01]=1
1
2
3
L N
2
1
3
L N
2
1
4
3
4
4
4
3
L N
2
1
S2S
S2S
S2S
[d-01]=2
(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
INFORMATION
■
In case the benefit kWh rate power supply function is
enabled, the screed dry-out function can not be
enabled.
■
When connecting the equipment to a benefit kWh rate
power supply, change field setting [d-01]. When
benefit kWh rate power supply is of type 1 or indoor
unit is connected to a normal kWh rate power supply
(via 30-31, X2M) change both field settings [d-01] and
[d-00]. Refer to
supply/Local shift value weather dependent" on
page 33
.
■
If the benefit kWh rate power supply is of type 1 or
indoor unit is connected to a normal kWh rate power
supply, 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.
■
If the benefit kWh rate power supply is of type 2 or 3
and indoor unit is not connected to a normal kWh rate
power supply, then the heaters cannot be controlled.
This power supply interruption should not be longer
than 2 hours, otherwise the real time clock of the
controller will be reset.
During power supply interruption, the controller
display will be blank.
X2M
30 31
L N
BLK
WHT
X6YB
X6Y
X6YA
X2M
30 31
L N
BLK
WHT
X6YB
X6Y
X6YA
