Daikin EKHWET120BAV3, User Reference Manual

Page: 34 / 52

5 | Operation
User reference guide
34
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680076-1 – 2021.11
You feel … Fine-tune with slope and
offset:
At regular outdoor
temperatures …
At cold outdoor
temperatures …
Slope Offset
Cold Hot ↓ ↑
Hot OK ↑ ↓
Hot Cold ↑ ↓
Hot Hot — ↓
See "5.8.3 Slope-offset curve" [
4
32].
To fine-tune the weather-dependent curve: 2-points curve
The following table describes how to fine-tune the weather-dependent curve of
the tank:
You feel … Fine-tune with setpoints:
At regular outdoor
temperatures …
At cold outdoor
temperatures …
Y2
(a)
Y1
(a)
X1
(a)
X2
(a)
OK Cold ↑ — ↑ —
OK Hot ↓ — ↓ —
Cold OK — ↑ — ↑
Cold Cold ↑ ↑ ↑ ↑
Cold Hot ↓ ↑ ↓ ↑
Hot OK — ↓ — ↓
Hot Cold ↑ ↓ ↑ ↓
Hot Hot ↓ ↓ ↓ ↓
(a)
See "5.8.2 2-points curve" [
4
31].
5.9 Priority schedule
Air Conditioning or domestic hot water priority
When multiple indoor units are connected to the outdoor unit, the user can set on
the user interface for each month whether to put
DHW or Air Conditioning ( A/C ) as
priority. This will determine how the outdoor unit will react in case multiple indoor
units requested operation at the same time:
▪ If
DHW
is set as priority, outdoor unit can decide to operate for
DHW
primarily,
while in cooling season A/C operation is stopped or in heating season according
to the heating load of the system,
A/C
operation is on hold or balanced. In this
case, once DHW operation is finished or is no longer within operation range of
heat pump, outdoor unit can switch to
A/C
(cooling or heating).
▪ If A/C is set as priority, outdoor unit can decide to operate only A/C , in which
case the booster heater can start for DHW production. Once A/C (cooling)
operation is turned off or A/C (heating) operation is finished, heat pump outdoor
unit can switch to DHW .
To select the Priority schedule
1 Go to [5.F]: Tank > Priority schedule .