Daikin EKHWS050B3VJU, Installation Manual

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E080B3VJU
Domestic hot water tank for air to water heat pump system
4PW56114-1
Installation manual
3
I
NSTALLATION OF THE
EKHWS
DOMESTIC HOT
WATER TANK
In case of very long field water piping between the domestic hot
water tank and the hot water end point (shower, bath, etc.) it can take
more time before the hot water from the domestic hot water tank
reaches the hot water end point.
If required connect a recirculation pump in between the hot water end
point and the recirculation hole in the domestic hot water tank.
CAUTION
■
The total system (indoor and outdoor unit) is designed
for combination with a domestic hot water tank. In
case another tank is being used in combination with
the 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.
■
The equipment is not intended for use in a potentially
explosive atmosphere.
■
Only this tank can be used in combination with the
solar kit option (EKSOLHW*).
■
Domestic hot water quality must be according to "Safe
Drinking water Act (42 U.S.C. 300f)".
■
Do not connect to any heating system or component
previously used with a non potable water heating
appliance.
■
Do not introduce toxic chemicals, such as used for
boiler treatment, into the system.
■
Fill system only with water (EKHBH, EKHBX, EDLQ,
EBLQ) or water with propylene glycol and inhibitor
(only for EDLQ, EBLQ), having a toxicity rating or
Class of 1, as listed in Clinical Toxicology of
Commercial products, 5th edition.
■
If glycol is used, limit the pressure in the system to
30 psi (2.07 bar) by means of an approved pressure
relief valve. Refer to the figure in "Safety devices" on
page 4.
■
It is not allowed to add ethylene glycol to the water
circuit. Adding ethylene glycol might lead to
contamination of the domestic water if a leakage
would occur in the heat exchanger coil.
■
A drain device should be installed on the cold water
connection on the domestic hot water tank.
■
It is important that the storage capacity of the
domestic hot water tank meets normal daily
fluctuations in consumption of domestic hot water
without any fall of the water outlet temperature during
use.
NOTE
Immediately after installation, the domestic hot 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.
CAUTION
In case of limited consumption of domestic hot water, e.g.
at holiday residences or at houses that are occasionally
not occupied, the domestic hot 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 domestic hot 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.
1 Cold water
connection
2 Hot water connection
3 Shunt pump
(field supply)
4 Non-return valve
(field supply)
1
2 3
4
2
1
1 Shower
2 Recirculation pump
1D_IM_4PW56114-1.book Page 3 Friday, September 18, 2009 1:50 PM