Daikin EKHWCH300PB, EKHWC500B, EKHWCH500PB, EKHWCB500PB, EKHWDH500B Operation manuals
...
Installation and operating manual
Daikin Altherma ST
(Hot water storage tank)
EKHWCH300(P)B
EKHWC500B
EKHWCH500(P)B
EKHWCB500(P)B
EKHWDH500B
EKHWDB500B
EKHWP300(P)B
EKHWP500(P)B
EKHWP54419B
Installation and operating manual
Daikin Altherma ST (Hot water storage tank)
English
List of contents
List of contents
1 General safety precautions 2
1.1 Particular safety instructions ..................................................... 2
1.1.1 Observing the instructions .......................................... 3
1.1.2 Meaning of warnings and symbols.............................. 3
1.2 Safety instructions for installation and operation....................... 4
1.2.1 General ....................................................................... 4
1.2.2 Intended use ............................................................... 4
1.2.3 Device installation room.............................................. 4
1.2.4 Electrical installation ................................................... 4
1.2.5 Requirements of the heating and filling water............. 4
1.2.6 Heating and sanitary side connection......................... 5
1.2.7 Operation .................................................................... 5
1.3 Handover to operator and warranty........................................... 5
1.3.1 Instructing the owner................................................... 5
1.3.2 Warranty conditions .................................................... 5
2 Product description 6
2.1 Design and components............................................................ 6
2.2 Brief description......................................................................... 11
2.3 Scope of delivery....................................................................... 12
2.4 Optional accessories ................................................................. 12
2.4.1 Electric immersion heaters.......................................... 12
2.4.2 Non return valves........................................................ 12
2.4.3 Dirt filter....................................................................... 12
2.4.4 Scalding protection ..................................................... 12
2.4.5 Solar storage tank extension kit.................................. 12
2.4.6 KFE filling connection ................................................. 12
3 Set-up and installation 13
3.1 Set-up........................................................................................ 13
3.1.1 Important information .................................................. 13
3.1.2 Installing the hot water storage tank ........................... 13
3.2 Installation ................................................................................. 14
3.2.1 Important Information (installation) ............................. 14
3.2.2 Hydraulic system connection ...................................... 14
3.3 Filling / Topping up .................................................................... 15
3.3.1 Hot water-heat exchanger........................................... 15
3.3.2 Buffer tank................................................................... 15
4 Start-up 16
5 Taking out of service 17
5.1 Temporary shutdown................................................................. 17
5.2 Draining the storage tank .......................................................... 17
5.2.1 With pre-mounted KFE filling connection.................... 18
5.2.2 With subsequently fitted KFE filling connection .......... 18
5.2.3 Without KFE filling connection .................................... 18
5.2.4 Draining the heating circuit and hot water circuit ........ 19
5.2.5 Drain the solar panel circuit (only pressurised
system) ....................................................................... 19
5.3 Final shutdown .......................................................................... 19
6 Hydraulic 20
6.1 Connection schemata................................................................ 20
6.1.1 Solution for low-temperature heat pumps................... 20
6.1.2 Solution for systems with high hot water demand....... 21
6.1.3 Solution for oil or gas condensing boilers ................... 22
6.1.4 Solution for sanitary side connection .......................... 22
7 Service and maintenance 23
7.1 Periodic checks ......................................................................... 23
7.2 Annual inspection ...................................................................... 23
8 Technical data 24
8.1 Information on the type plate..................................................... 24
8.2 Basic data.................................................................................. 25
8.2.1 EKHWD....................................................................... 25
8.2.2 EKHWC........................................................................ 26
8.2.3 EKHWP........................................................................ 28
8.3 Performance diagrams ............................................................... 30
8.3.1 EKHWD / EKHWC ....................................................... 30
8.3.2 EKHWP........................................................................ 30
8.4 Tightening torque ....................................................................... 31
List of keywords 32
1 General safety precautions
1.1 Particular safety instructions
WARNING
Devices that have not been set up and
installed correctly can impair the
function of the device and/or cause
serious or fatal injury to the user.
▪ Work on the unit (such as setup,
servicing, connection and initial
commissioning) must only be carried
out by persons who are authorised
and who have successfully
completed qualifying technical or
vocational training, and who have
taken part in advanced training
sessions recognised by the relevant
responsible authorities for the specific
activity. These include, in particular,
certified heating engineers,
qualified electricians and HVAC
specialists who, because of their
professional training and expert
knowledge, have experience in the
professional installation and
maintenance of heating, cooling and
air conditioning systems as well as
hot water storage tanks.
WARNING
Disregarding the following safety
instructions may result in serious
physical injury or death.
▪ This device must only be used by
children aged 8 and above and by
persons with restricted physical,
sensory or mental capabilities or with
a lack of experience and knowledge,
if they are under supervision or if they
have been instructed in the safe use
of the equipment and understand the
Installation and operating manual
2
Daikin Altherma ST (Hot water storage tank)
EKHW(D/C/P)(300/500)(P)B
008.1633099_00 – 06/2020
1 General safety precautions
dangers arising therefrom. Children
must not play with the device.
Cleaning and user maintenance
must not be carried out by children
without supervision.
▪ Make up the power supply in
accordance with IEC60335-1, via a
separator device which exhibits
contact separation in all poles with a
contact opening distance that provide
full disconnection in accordance with
overvoltage categoryIII.
▪ All the electrical work must only be
carried out by electrically qualified
experts and with consideration of the
local and national regulations, and
the instructions in this manual. Check
that a suitable electrical circuit is
being used. Inadequate capacity of
the power circuit or improperly
executed connections can cause
electrocution or fire.
▪ The storage tank and hot water circuit
can be drained. The instructions must
be observed.
1.1.1 Observing the instructions
▪ The original documentation is written in English. All other
languages are translations.
▪ Please read this manual carefully and thoroughly before
proceeding with the installation or modification of the heating
system.
▪ These instructions are intended for authorised and trained heating
and sanitation experts who have experience in the proper
installation and maintenance of heating systems and hot water
storage tanks by virtue of their technical training and knowledge.
▪ This manual provides all the necessary information for installation,
start-up and maintenance, as well as basic information on
operation and settings. Please go through the attached
documents for a detailed description of operation and control.
This manual is valid for models as listed on front page, hereinafter
referred to as “Hot water storage tank”. Subject to change and
correction.
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪ Installation and operation manual (format: paper – included in the
scope of delivery)
▪ Installation and maintenance instructions
▪ Operating instructions for the user/owner
▪ On connection of an external heat generator
▪ the associated installation and operating manual.
▪ On connection of a solar system
▪ the associated installation and operating manual.
The guides are included in the scope of supply for the individual
units.
The digital documents and the latest editions of the supplied
documentation are available on the regional Daikin website or, on
request, from your dealer. The Daikin website is easy to access
using the QR code on your device.
1.1.2 Meaning of warnings and symbols
Warnings in this manual are classified according into their severity
and probability of occurrence.
DANGER
Indicates an immediate danger.
Disregarding this warning can lead to serious injury or
death.
WARNING
Indicates a potentially dangerous situation.
Disregarding this warning may result in serious physical
injury or death.
CAUTION
Indicates a situation which may cause possible damage.
Disregarding this warning can lead to damage to property
and the environment.
INFORMATION
This symbol identifies user tips and particularly useful
information, but not warnings or hazards.
Special warning signs
Some types of danger are represented by special symbols:
Electric current
Risk of burning or scalding
Validity
Some information in this manual has limited validity. The validity is
highlighted by a symbol.
Comply with the stipulated tightening torque (see
"8.4Tightening torque"[431])
Only applicable for the unpressurised system (drain-back)
Only applicable for the pressurised system
Handling instructions
1 Handling instructions are shown as a list. Actions for which the
sequential order must be maintained are numbered.
EKHW(D/C/P)(300/500)(P)B
Daikin Altherma ST (Hot water storage tank)
008.1633099_00 – 06/2020
Installation and operating manual
3
1 General safety precautions
1.2 Safety instructions for installation and operation
1.2.1 General
WARNING
Devices that have not been set up and
installed correctly can impair the
function of the device and/or cause
serious or fatal injury to the user.
▪ Work on the unit (such as setup,
servicing, connection and initial
commissioning) must only be carried
out by persons who are authorised
and who have successfully
completed qualifying technical or
vocational training, and who have
taken part in advanced training
sessions recognised by the relevant
responsible authorities for the specific
activity. These include, in particular,
certified heating engineers,
qualified electricians and HVAC
specialists who, because of their
professional training and expert
knowledge, have experience in the
professional installation and
maintenance of heating, cooling and
air conditioning systems as well as
hot water storage tanks.
▪ Switch off the external main switch
before starting any work on the
indoor unit and secure against being
switched on inadvertently.
▪ Do not leave any tools or other
objects below the hood of the unit
after finishing installation or
maintenance work.
Avoid Danger
The hot water storage tank is state-of-the-art and is built to meet all
recognised technical requirements. However, improper use can lead
to serious injuries or death, as well as causing material damage.
To prevent such risks, install and operate the hot water storage tank
only:
▪ as stipulated and in perfect condition,
▪ with an awareness of the safety and hazards involved.
This assumes knowledge and use of the contents of this manual, the
relevant accident prevention regulations and the recognised safetyrelated and occupational medical rules.
▪ Keep flammable materials away from the hot water storage tank.
Before working on the hot water storage tank and the heating
system
▪ Work on the hot water storage tank and heating system (e.g.
installation, connection and initial start-up) should only be carried
out by authorised and trained heating experts.
▪ Switch off the main switch before starting any work on the
domestic hot water storage tank and heating system and secure it
against unintentional switch-on.
▪ Seals must not be damaged or removed.
▪ Make sure that the safety valves comply with the requirements of
EN 12828 when connecting on the heating side, and with the
requirements of EN 12897 when connecting on the domestic
water side.
▪ Only original replacement parts may be used.
1.2.2 Intended use
The product may only be used as a hot water storage tank. The hot
water storage tank must be installed, connected and operated only
according to the information in this manual.
When connecting to the heat pump you must use only the storage
tank connection kits (E-Pac) provided for the purpose.
Only those electric immersion heaters supplied by us may be used.
Any other use outside the intended use is considered as improper.
The operator alone shall bear responsibility for any resulting
damage.
Intended use also includes compliance with the maintenance and
service conditions. Spare parts must at least satisfy the technical
requirements defined by the manufacturer. This is the case, for
example, with the use of original replacement parts.
1.2.3 Device installation room
For safe and fault-free operation, it is necessary that the installation
location of the hot water storage tank fulfils certain criteria.
Information about the installation location for the hot water storage
tank can be found in "3.1Set-up"[413].
Information on the installation site of other components can be found
in the associated documentation supplied with them.
1.2.4 Electrical installation
▪ Electrical installations may only be carried out by electrical
technicians and in compliance with valid electrical guidelines as
well as the specifications of the responsible energy supply
company.
▪ Compare the mains voltage indicated on the nameplate with the
supply voltage before connecting to the mains.
▪ Before beginning work on live parts, disconnect them from the
power supply (switch off main switch, remove fuse) and secure
against unintentional restart.
▪ For each hard wired power connection, install a separate
disconnector system compliant with EN 60335-1 for all-pole
disconnection from the power mains.
1.2.5 Requirements of the heating and filling water
Observe the relevant regulations of technology to prevent creation of
corrosion products and deposits.
Minimum requirements regarding the quality of filling and
supplementary water:
▪ Water hardness (calcium and magnesium, calculated as calcium
carbonate): ≤3mmol/l
▪ Conductivity: ≤1500 (ideal ≤100)μS/cm
Installation and operating manual
4
Daikin Altherma ST (Hot water storage tank)
EKHW(D/C/P)(300/500)(P)B
008.1633099_00 – 06/2020
1 General safety precautions
▪ Chloride: ≤250mg/l
▪ Sulphate: ≤250mg/l
▪ pH value (heating water): 6.5 – 8.5
Using filling water and top-up water which does not meet the stated
quality requirements can cause a considerably reduced service life
of the equipment. The responsibility for this lies solely with the
operator.
1.2.6 Heating and sanitary side connection
▪ Create a heating system according to the safety requirements of
EN12828.
▪ With sanitary connection, you must observe
▪ EN 1717 – Protection against pollution of potable water
installations and general requirements of devices to prevent
pollution by backflow.
▪ EN 806 – Specifications for installations inside buildings
conveying water for human consumption.
▪ and, in addition, the country-specific legal regulations.
INFORMATION
The domestic water quality must comply with the
EU Guideline 98/83 EC and the regionally-applicable
regulations.
The connection of a solar installation, an electric heating rod or an
alternative heat generator may cause the storage temperature to
exceed 60°C.
▪ For this reason you should fit scalding protection (e.g. VTA32 +
Screw connection1")
▪ Use a pressure reducer if the cold water connection pressure
>6bar.
If the hot water storage tank is connected to a heating system with
steel pipes, radiators or non-diffusion-proof floor heating pipes, slurry
and swarf could enter the hot water storage tank and cause
blockages, local overheating or corrosion.
▪ To prevent possible damage, fit a dirt filter or sludge separator into
the heating return flow of the system.
▪ SAS1
1.3 Handover to operator and warranty
1.3.1 Instructing the owner
▪ Before you hand over the device, explain to the owner how he/she
can operate and check the device.
▪ Hand over the technical documentation (at least the operating
instructions and operating manual) to the operator and advise him
that these documents must be made available at all times and be
stored in the immediate vicinity of the device.
▪ Document the handover by filling out the installation and
instruction forms together with the owner and sign them.
1.3.2 Warranty conditions
The legal guarantee conditions fundamentally apply. Our more
extensive warranty conditions can be found in the Internet. Ask your
suppliers if necessary.
There is only an entitlement to warranty services when it can be
certified that the annual maintenance work has been regularly
completed.
INFORMATION
To avoid heat losses caused by gravitational circulation,
circulation brakes SKB shall be installed into the
connections.
1.2.7 Operation
Only operate the hot water storage tank
▪ After all installation and connection work has been completed.
▪ With fully installed equipment covers and service accesses.
▪ With sanitary side pressure reducers installed (max. 6bar).
▪ With heating side pressure reducers installed (max. 3bar).
▪ With completely filled storage containers (fill level display).
The specified servicing intervals should be adhered to and
inspection work must be carried out.
EKHW(D/C/P)(300/500)(P)B
Daikin Altherma ST (Hot water storage tank)
008.1633099_00 – 06/2020
Installation and operating manual
5
2 Product description
2 Product description
The legend designation for the following graphics in this chapter is
listed in " 2‒1 Legend"[46].
The following graphics show the connections and dimensions.
2.1 Design and components
2‒1 Legend
Item Explanation Applicable to model
a Storage tank (polypropylene double walled jacket with PUR hard foam heat insulation) all
b Mount for handle or solar R4 controller all
c Type plate all
d Fill level indicator all
e Safety overflow connection (1¼"AG(outer thread), 1"IG(internal thread)) all
f Pressureless storage tank water all
g Hot water zone all
h Solar zone S#A/ S#B/ S#F/ S#L/ S#K
i Connection for electric immersion heater (R 1½"IG(internal thread)) all
j Optional: Electric immersion heater (designated as a booster heater in heat pump systems.) all
o Thermal insulation shell for heat exchanger to provide heating support (WT5) S#A/ S#B/ S#F/ S#H/
S#I/ S#L/ S#K
q Thermal insulation shell for pressurised solar heat exchanger (WT4) S#F/ S#K/ S#L
r Solar - flow layering pipe S#A/ S#B/ S#D/ S#H/
S#I/ S#J/ S#Q
s Sensor pocket for tank temperature sensor all
t Drain-back solar - return flow S#A/ S#B/ S#D/
S#H‑S#J/ S#Q
Filling and draining connection for storage tank water all
u Drain-back solar - flow S#A/ S#B/ S#D/
S#H‑S#J/ S#Q
v Pressurised solar - return flow S#F/ S#G/ S#K‑S#M
w Pressurised solar - flow S#F/ S#G/ S#K‑S#M
x Hot water connection
y Cold water connection
z Storage tank charging return flow (via 1stheat source)
aa Storage tank charging flow (via 1stheat source)
ab Storage tank charging return flow (via 2ndheat source)
ac Storage tank charging flow (via 2ndheat source)
ad Excluding Altherma RW and Altherma 3RW: Heating support outlet↓
Only Altherma RW and Altherma 3RW: Storage tank conditioning/heating support return flow↑ (connect
to flow for heating)
ae Excluding Altherma RW and Altherma 3RW: Heating support inlet↑
generator!)
Only Altherma RW and Altherma 3RW: Storage tank conditioning/heating support flow↓ (connect to flow
Altherma RW resp Altherma 3RW)
af QR-code sticker – access to detailed documents on Daikin web-site
WT1 Corrugated stainless steel pipe heat exchanger for domestic hot water using depressurised storage tank
water for heating up
WT2 Stainless steel corrugated pipe heat exchanger for charging storage tank via 1stheat source S#A/ S#B/ S#D/ S#F/
WT3 Stainless steel corrugated pipe heat exchanger for charging storage tank via 2ndheat source S#I/ S#L/ S#P
WT4 Stainless steel corrugated pipe heat exchanger for charging the hot water storage tank by pressurised
solar system
WT5 Corrugated pipe stainless steel heat exchanger for heating support S#A/ S#B/ S#F/ S#H/
(1)
(1)
(1)
S#A/ S#B/ S#D/ S#F/
all
all
S#G/ S#H‑S#M/ S#O/
S#P
(1)
S#A/ S#B/ S#D/ S#F/
S#G/ S#H‑S#M/ S#O/
S#P
(1)
(1)
(1)
(connect to heating return!)
S#I/ S#L/ S#P
S#I/ S#L/ S#P
S#A/ S#B/ S#F/ S#H/
S#I/ S#K/ S#L
(1)
(connect to return flow heat
S#A/ S#B/ S#F/ S#H/
S#I/ S#K/ S#L
all
S#G/ S#H‑S#M/ S#P/
S#Q
S#F/ S#G/ S#K‑S#M
S#I/ S#L/ S#K
(1)
Recommended accessories (SKB (2 in number))
Installation and operating manual
6
Daikin Altherma ST (Hot water storage tank)
EKHW(D/C/P)(300/500)(P)B
008.1633099_00 – 06/2020
2 Product description
Item Explanation Applicable to model
S#A Hot water storage tank EKHWP54419Bx
S#B Hot water storage tank EKHWP500Bx
S#D Hot water storage tank EKHWP300Bx
S#F Hot water storage tank EKHWP500PBx
S#G Hot water storage tank EKHWP300PBx
S#Q Hot water storage tank EKHWC500Bx
S#H Hot water storage tank EKHWCH500Bx
S#I Hot water storage tank EKHWCB500Bx
S#J Hot water storage tank EKHWCH300Bx
S#K Hot water storage tank EKHWCH500PBx
S#L Hot water storage tank EKHWCB500PBx
S#M Hot water storage tank EKHWCH300PBx
S#O Hot water storage tank EKHWDH500Bx
S#P Hot water storage tank EKHWDB500Bx
X Recommended wall distance 200mm all
2‒1 Hot water storage tank – general
EKHW(D/C/P)(300/500)(P)B
Daikin Altherma ST (Hot water storage tank)
008.1633099_00 – 06/2020
Installation and operating manual
7
2 Product description
Unpressurised system - DrainBack
2‒2 500l models
Installation and operating manual
8
Daikin Altherma ST (Hot water storage tank)
EKHW(D/C/P)(300/500)(P)B
008.1633099_00 – 06/2020
2 Product description
2‒3 300l models
EKHW(D/C/P)(300/500)(P)B
Daikin Altherma ST (Hot water storage tank)
008.1633099_00 – 06/2020
Installation and operating manual
9
2 Product description
Pressurised system
2‒4 500l P‑models
Installation and operating manual
10
Daikin Altherma ST (Hot water storage tank)
EKHW(D/C/P)(300/500)(P)B
008.1633099_00 – 06/2020
2 Product description
2‒5 300l P‑models
2.2 Brief description
The hot water storage tank is a combination of heat storage tank and
instantaneous water heater.
The pressureless storage water serves as heat storage medium.
Useful heat is supplied and removed via the spiral corrosionresistant heat exchanger, which is made from a corrugated stainless
steel pipe (1.4404), and is completely immersed in the storage tank
water. In the heat exchanger for domestic hot water generation,
domestic hot water is stored at the temperature level of the
preparation zone.
The cold water which flows in when the hot water is drawn off is first
routed to the storage tank at the very bottom of the heat exchanger
(WT1), where it cools the lower zone of the storage tank down as
much as possible. The readiness zone is heated by an external heat
generator (condensing boiler, heat pump, solar system, electric
immersion heater). Water flows through the heat exchanger for
storage charging (WT2) from top to bottom.
On its way to the top, the domestic water continuously absorbs the
heat of the storage tank water. The flow direction, operating on the
principle of counter-flow, and the coil-shaped heat exchanger create
a pronounced temperature layering in the hot water storage tank. As
high temperatures can be maintained for a very long time in the
upper section of the storage tank, a high hot water output is
achieved even if water is drawn off over a long period of time.
The hot water storage tank listed in "2.1 Design and
components"[4 6] can be heated by solar in addition to the external
heat generator. Depending on the available heat from the sun, the
entire hot water storage tank can be heated up.
The stored heat is now used both for hot water generation and for
heating support. The high total storage capacity also temporarily
allows time without sunshine to be bridged.
If a heat pump system is used as an external heat generator, the
primary hot water storage tank can only be one of the EKHWPmodels.
Optimum water hygiene
Low flow or unheated zones on the domestic water side are
completely excluded with the hot water storage tank. It is impossible
for sludge, rust or other sediments to be deposited, as can be the
case with other large volume tanks. The water which is fed into the
system first is also discharged first (first in, first out principle).
Low maintenance and corrosion
The hot water storage tank is made of plastic and is completely
corrosion free. No sacrificial anode or similar corrosion protection
system is necessary. This means that associated maintenance work,
e.g. changing the protective anodes or cleaning the storage tank,
does not need to be carried out on the hot water storage tank. Only
the fill level of the storage tank water needs to be checked.
The corrugated stainless steel pipe heat exchangers on the heating
and potable water side are made from high quality stainless steel
(1.4404).
Low calcification
On the pressureless storage tank side only once deposition of
limescale is possible. The immersion heater therefore remains clean,
as do all the stainless steel heat exchanger pipes in the storage tank
water. This means that no limescale can build up which would
continuously reduce the efficiency of heat transfer in the course of
operation (as is the case with other storage tank designs).
The thermal and pressure expansion and high flow rates in the
domestic water heat exchanger release any possible limescale
deposits, which are then flushed away.
EKHW(D/C/P)(300/500)(P)B
Daikin Altherma ST (Hot water storage tank)
008.1633099_00 – 06/2020
Installation and operating manual
11
Loading...