EKHBH/ EKSWW150-300V3/Z2
Indoor unit for air to water heat pump and sanitary warm water tank for air to water heat pump system
4PW36978-1C
Installation manual
14
S
ANITARY
WATER
TANK
(
OPTIONAL
)
Following descriptions are only for EKSWW*V3
models, not for EKSWWU*V3 models.
Main components
■
The total
system (indoor unit and
outdoor unit) is designed for combination with an
sanitary water tank. In case
another tank is being used in combination with the
indoor unit, Daikin cannot
guarantee neither good operation nor reliability of the
system. For those reasons Daikin cannot give
warranty of the system in such case.
■
Sanitary water quality must be according to EN
directive 98/83 EC.
■
For safety reasons, it is not allowed to add ethylene
glycol to the water circuit. Adding ethylene glycol
might lead to contamination of the sanitary water if a
leakage would occur in the heat exchanger coil.
■
It is important that the storage capacity of the sanitary
water tank meets normal daily fluctuations in
consumption of hot water without any fall of the water
outlet temperature during use.
■
Immediately after installation, the sanitary water tank
must be flushed with fresh water. This procedure must
be repeated at least once a day the first 5 consecutive
days after installation.
■
In case of limited consumption of hot water, e.g. at
holiday residences or at houses that are occasionally
not occupied, the sanitary water tank installation must
be fitted with a shunt pump.
-
The shunt pump can be time-controlled,
-
the shunt pump must operate to circulate the
complete volume of the sanitary water tank 1.5
times per hour,
-
and the shunt pump must operate, or be
programmed for operation, during 2 uninterrupted
hours per day at least.
NOTE
For installation of an EKSWWU sanitary water tank,
refer to the installation manual supplied with the
EKUSWW installation kit.
1
2
3
4
1
Cold water
connection
2
Hot water
connection
3
Shunt pump
(field supply)
4
Non-return valve
(field supply)
1
Field supply
2
Hot water connection
3
Pressure relief valve connection
4
Pressure relief valve (field supply)
5
Electrical box
6
Electrical box lid
7
Booster heater
8
Threaded thermistor hole
9
Flow inlet connection
10
Heat exchanger coil
11
Return outlet connection
12
Cold water connection
5
6
9
11
12
10
7
8
C
R
F
1
4
2
3
H