Installation; Important Information (Installation); Hydraulic System Connection - Daikin Altherma ST EKHWCH300B Installation And Operating Manual

3 Set-up and installation
3‒2 Installing the hot water storage tank (shown on the EKHWP)
3.2

Installation

3.2.1

Important Information (installation)

DANGER: RISK OF BURNING/SCALDING
There is a danger of scalding at water temperatures
>60°C. This can arise with solar energy utilisation, if the
Legionella protection is activated or if the target
temperature is set to >60°C.
▪ Fit scalding protection
protection" [ 4 12]).
CAUTION
If the hot water storage tank is connected to a heating
system with steel pipes, radiators or non-diffusion-proof
underfloor heating pipes, sludge and swarf could enter the
hot water storage tank and cause blockages, local
overheating or corrosion.
▪ Flush the feed pipes before filling the heat exchanger.
▪ Rinse out the heat distribution network (in the existing
heating system).
▪ Fit a dirt filter or sludge catcher in the heating return
pipe (see "2.4.3 Dirt
CAUTION:
If an external heating unit (e.g. pressurised solar system,
wood-buring boiler) will be connected to the heat
exchanger WT4 (" 2‒4 500 l
[ 4 11], item v+w), a too high flow
300 l P‑models"
temperature can cause damage to or destroy the hot water
storage tank.
▪ The feed flow temperature of the external heater shall
be limited to max. 95°C.
▪ For domestic water pipes observe the stipulations of EN 806 and
EN 1717.
▪ The position and dimensions of the connections can be taken from
models" [ 4 8] to
" 2‒2 500 l
▪ Check the cold water connection pressure (maximum 10 bar).
▪ At higher pressure in the drinking water line, a pressure reducer
must be installed.
Installation and operating manual
14
(see "2.4.4 Scalding
filter" [ 4 12]).
P‑models" [ 4 10] /
" 2‒5
P‑models" [ 4 11].
" 2‒5 300 l
▪ Connect the pressure relief line to the safety pressure relief valve
(customer supply) and connect the diaphragm expansion tank as
per EN 12828.
▪ Note tightening torque (see "8.4 Tightening
▪ Observe the requirements for the heating and filling water (see
"1.2.5 Requirements of the heating and filling
INFORMATION
To prevent heat loss from the connection pipes when the
heating pump is switched off and during periods when no
domestic water is drawn off (gravity circulation), you should
fit circulation brakes (see
in the connections to the hot water storage tank.
3.2.2

Hydraulic system connection

1 Only with connection of a EKHWP hot water storage tank to a
heat pump: Mount the storage tank kit "E-Pac" for the heat
pump to the EKHWP hot water storage tank (see the individual
installation and operating instructions included for the storage
tank connection kit).
2 When using circulation brakes, fit them into the pipe
connections on the hot water storage tank.
3 Connect the drain hose to the connector of the safety overflow
models" [ 4 8] to
(" 2‒2 500 l
item e) on the hot water storage tank.
▪ Use transparent drain hose (draining water must be visible).
▪ Connect the drain hose to an adequately dimensioned waste
water installation.
▪ Drain should not be lockable.
3‒3 Installation of drain hose at safety overflow
4 Check the water pressure at the cold water connection
(<10 bar).
Result: If the pressure in the domestic water supply is greater
then fit a pressure reducer and limit the water pressure to
<10 bar.
5 Create connection of the cold water inlet to the hot water
storage tank (" 2‒2 500 l models"
P‑models" [ 4 11], item y).
Daikin Altherma ST (Hot water storage tank)
torque" [ 4 31]).
water" [ 4 4]).
valves" [ 4 12])
"2.4.2 Non return
P‑models" [ 4 11],
" 2‒5 300 l
[ 4 8] to " 2‒5 300 l
EKHW(D/C/P)(300/500)(P)B
008.1633099_00 – 06/2020