Daikin EKHWMX300C, EKHWMXB300C, EKHWMX500C, EKHWMXB500C Installation manuals
Installation and
maintenance instructions
Daikin Altherma M ECH2O
EKHWMX300C
EKHWMXB300C
EKHWMX500C
EKHWMXB500C
07/2019
Installation and
maintenance instructions
Solar storage tank with heating
English
List of contents
1 General Information. . . . . . . . . . . . . . . . . . . . 3
1.1 Refer to the manual . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Warranty conditions . . . . . . . . . . . . . . . . . . . . . . . 3
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Warnings and symbols. . . . . . . . . . . . . . . . . . . . . 4
2.1.1 Meaning of the warnings. . . . . . . . . . . . . . . . . . . . . .4
2.1.2 Validity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1.3 Handling instructions. . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Avoiding danger . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Instructions for operating safety. . . . . . . . . . . . . . 5
2.4.1 Before working on the hydraulic system . . . . . . . . . . 5
2.4.2 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . .5
2.4.3 Site of installation . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.4.4 Heating system and sanitary connection . . . . . . . . . 6
2.4.5 Demands on the heating and pressure-free storage
water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.4.6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4.7 Instruct the owner . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Product description. . . . . . . . . . . . . . . . . . . . 8
3.1 Design and components . . . . . . . . . . . . . . . . . . . 8
3.1.1 Exterior of the device and interior structure
EKHWMX(B)300C. . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.1.2 Exterior of the device and interior structure
EKHWMX(B)500C. . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.1.3 Upper side of the device . . . . . . . . . . . . . . . . . . . . . 10
4 Set-up and installation . . . . . . . . . . . . . . . . 12
4.1 Dimensions and connections . . . . . . . . . . . . . . . 13
4.1.1 EKHWMX(B)300C. . . . . . . . . . . . . . . . . . . . . . . . . .13
4.1.2 EKHWMX(B)500C. . . . . . . . . . . . . . . . . . . . . . . . . .14
4.1.3 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Removing the cover and thermal insulation. . . . 17
4.4 Water connection . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.1 Aligning the connections of the heating supply and
return. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.4.2 Connecting hydraulic lines . . . . . . . . . . . . . . . . . . .20
4.4.3 Installation of the DB connection kit . . . . . . . . . . . .22
4.4.4 Installation of the P connection kit. . . . . . . . . . . . . .22
4.5 Electrical connection . . . . . . . . . . . . . . . . . . . . . 22
4.5.1 Daikin Altherma M ECH2O overall connection
diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.5.2 Position of the printed circuit boards. . . . . . . . . . . .24
4.5.3 RoCon BM2C printed circuit board connection
diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.5.4 Mains connection Daikin Altherma M ECH2O. . . . .25
4.5.5 Opening the controller housing and establishing
electrical connections . . . . . . . . . . . . . . . . . . . . . . .25
4.5.6 Connecting the heat pump outdoor unit . . . . . . . . .25
4.5.7 Connecting an external switching contact. . . . . . . .25
4.5.8 External requirement request (EBA) . . . . . . . . . . . .26
4.5.9 Connecting an external heat generator. . . . . . . . . .26
4.5.10 Connecting a Daikin room thermostat. . . . . . . . . . .27
4.5.11 Connecting optional Daikin RoCon system
components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
4.5.12 Connecting a Daikin FWXV-ATV3 . . . . . . . . . . . . .28
4.5.13 Connecting switching contacts (AUX outputs) . . . . 29
4.5.14 Off-peak mains connection (HT/NT) . . . . . . . . . . . .29
4.5.15 Connecting an intelligent controller
(Smart Grid - SG) . . . . . . . . . . . . . . . . . . . . . . . . . .30
4.5.16 Symbols and key names for connection and wiring
diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
4.6 Filling the system on the water side . . . . . . . . . 31
4.6.1 Checking the water quality and adjusting the
pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.6.2 Filling the hot water heat exchanger . . . . . . . . . . . 31
4.6.3 Filling the storage tank . . . . . . . . . . . . . . . . . . . . . 31
4.6.4 Filling the heating system . . . . . . . . . . . . . . . . . . . 31
5 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.1 Initial start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1.2 Starting the device. . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1.3 Setting commissioning parameters . . . . . . . . . . . . 33
5.1.4 Bleeding the hydraulic system. . . . . . . . . . . . . . . . 34
5.1.5 Checking the minimum flow. . . . . . . . . . . . . . . . . . 35
5.1.6 Setting the parameter Screed Program
(only when required) . . . . . . . . . . . . . . . . . . . . . . . 35
5.2 Re-commissioning. . . . . . . . . . . . . . . . . . . . . . . 35
5.2.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.2.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6 Taking out of operation. . . . . . . . . . . . . . . . 37
6.1 Temporary shutdown . . . . . . . . . . . . . . . . . . . . 37
6.1.1 Draining the storage tank . . . . . . . . . . . . . . . . . . . 37
6.1.2 Draining the heating circuit and hot water circuit. . 38
6.2 Final shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 39
7 Service and maintenance . . . . . . . . . . . . . . 40
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.2 Activities to be performed annually . . . . . . . . . . 40
7.3 Filling, topping up the storage tank . . . . . . . . . . 41
7.4 Filling, topping up the heating system. . . . . . . . 42
7.4.1 Protecting the water circuit against freezing . . . . . 42
7.4.2 Filling, topping up steps. . . . . . . . . . . . . . . . . . . . . 43
8 Errors, malfunctions and messages . . . . . 45
8.1 Recognising errors, correcting malfunctions . . . 45
8.1.1 Current error display . . . . . . . . . . . . . . . . . . . . . . . 45
8.1.2 Reading out the protocol . . . . . . . . . . . . . . . . . . . . 45
8.1.3 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2 Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.3 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.4 Control and configuration of DIP switches . . . . 58
8.5 Emergency operation . . . . . . . . . . . . . . . . . . . . 58
9 Hydraulic system connection. . . . . . . . . . . 59
10 Technical data . . . . . . . . . . . . . . . . . . . . . . . 61
10.1 Equipment data . . . . . . . . . . . . . . . . . . . . . . . . . 61
10.1.1 EKHWMX(B)300C . . . . . . . . . . . . . . . . . . . . . . . . . 61
10.1.2 EKHWMX(B)500C . . . . . . . . . . . . . . . . . . . . . . . . . 62
10.2 Information on the type plate. . . . . . . . . . . . . . . 63
10.3 Characteristic lines . . . . . . . . . . . . . . . . . . . . . . 64
10.3.1 Sensor characteristic lines. . . . . . . . . . . . . . . . . . . 64
10.4 Tightening torque . . . . . . . . . . . . . . . . . . . . . . . 64
10.5 Circuit diagram Daikin Altherma M ECH2O. . . . 65
11 Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
12 List of keywords . . . . . . . . . . . . . . . . . . . . . 67
Installation and maintenance instructions
2
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
1 General Information
1 x General Information
1.1 Refer to the manual
Original Operating Instructions
These instructions are a >> translation of the original
version
Please read this manual carefully and thoroughly before proceeding with the installation or modification of the heating system.
Target Group
These instructions are aimed at people who are authorised and
who have successfully completed a qualifying technical or skilled
manual training program for the particular work to be carried out
and who have participated in professional development seminars
recognised by the appropriate responsible authority. This, in par
ticular, includes heating specialists and climate control technicians who have experience, as a result of their technical training
and their knowledge of the subject, of proper and appropriate
installation and maintenance of heating, climate control and cool
ing installations and heat pumps.
This manual provides all the necessary information for installation, start-up and maintenance, as well as basic information on
operation and settings. All parameters needed for trouble-free
operation have been configured at the factory. Please see the
attached documents for a detailed description of operation and
control.
<< in your language.
1.2 Warranty conditions
The legal guarantee conditions fundamentally apply. Our warranty conditions beyond that can be found online on your sales
presentative's webpage.
-
-
Relevant documents
– Daikin Altherma M ECH2O:
– Operating instructions for the user/owner
– Commissioning checklist
– the operating manual for the user/owner
– RoCon mb controller operating instructions
– Outdoor unit for Daikin Altherma M ECH2O: the respective
installation and operating instructions.
– On connection of a Daikin solar system: the respective instal-
lation and operating instructions.
– On connection of a Daikin FWXV-ATV3: the respective instal-
lation and operating instructions.
– On connection of a control component available as an acces-
sory (room station, mixer module, etc.): the associated instal-
lation and operating instructions.
The guides are included in the scope of supply for the individual
units.
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
3
2 x Safety
2 Safety
2.1 Warnings and symbols
2.1.1 Meaning of the warnings
Warnings in this manual are classified according
into their severity and probability of occurrence.
DANGER!
Draws attention to imminent 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 may cause damage
to property and the environment.
2.1.2 Validity
Some information in this manual has limited validity. The validity is highlighted by a symbol.
Heat pump outdoor unit
Heat pump interior unit EKHWMX(B)
FWXV-ATV3
Observe specified tightening torque (see
chap. 10.4 "Tightening torque")
Only applicable to the unpressurised solar
system (DrainBack).
Only applicable for the pressurised solar
system.
2.1.3 Handling instructions
● Handling instructions are shown as a list.
Actions for which the sequential order must be
maintained are numbered.
Results of actions are identified with an
arrow.
Entry into a setting procedure
Exit from a setting procedure
2.2 Avoiding danger
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
Risk of environmental damage
Danger of local freezing up
Health impairing or irritant materials
Prescribed temperature for continuous use
The Daikin Altherma M ECH
O is built according
2
to the state-of-the-art and the recognised technical rules. However, improper use may result in
serious physical injuries or death, as well as
property damage.
To avoid hazards, only install and operate the
Daikin Altherma M ECH
O:
2
– as stipulated and in perfect condition,
– with an awareness of safety and the hazards
involved.
This assumes knowledge and use of the contents of this manual, of the relevant accident prevention regulations as well as the recognised
safety-related and occupational health rules.
Danger of explosion
Installation and maintenance instructions
4
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
WARNING!
This equipment 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 dangers arising therefrom.
Children must not play with the equipment.
Cleaning or user maintenance must not be
carried out by children without supervision.
2.3 Intended use
The Daikin Altherma M ECH2O must only be
used to prepare hot water, as a room heating
system and as a room cooling system.
The Daikin Altherma M ECH
O must only be in-
2
stalled, connected and operated according to the
data in these instructions.
Only the use of a suitable outdoor unit approved
by Daikin is permitted. The following combinations are permissible in this respect:
Indoor unit Outdoor unit
Heating and cooling (X)
2 x Safety
persons who are authorised, who have
successfully completed qualifying technical or
vocational training for the respective activity
and who have taken part in advanced training
sessions recognised by the relevant responsible authority. This, in particular, includes
heating specialists and climate control technicians who have experience, as a result of their
technical training and their knowledge of the
subject, of proper and appropriate installation
and maintenance of heating, climate control
and cooling installations and heat pumps.
● Switch off the external main switch during all
work on the Daikin Altherma M ECH
secure it to prevent unintentional activation.
● 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 Daikin replacement parts may be
used.
● When working on the hydraulics, you must
first drain the water or release the pressure
using the internal KFE valve. Otherwise hot
water can jet out under pressure and result in
injury.
O, and
2
EKHWMX300C
EKHWMXB300C
EKHWMX500C
EKHWMXB500C
Tab. 2-1 Permissible combinations of Daikin Altherma M ECH2O solar
storage tanks with heating controller and Daikin Altherma M
ECH2O outdoor units
EBLQ05C2V3
EBLQ07C2V3
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. Replacement parts must at least satisfy the technical requirements defined by the manufacturer.
This is the case, for example, with original spare
parts.
2.4 Instructions for operating safety
2.4.1 Before working on the hydraulic system
2.4.2 Electrical installation
● Electrical installation must only be carried out
by specialist personnel with electrical
engineering qualifications and subject to
compliance with the valid electrical
engineering guidelines as well as the regulations of the responsible utility company (EVU).
● Compare the mains voltage (~230 V,
50 Hz or
~400 V, 50 Hz) indicated on the type plate
with the supply voltage before connecting to
the mains.
● Before beginning work on live parts,
disconnect all of the systems circuits from the
power supply (switch off main switch,
disconnect fuse) and secure against unintentional restart.
● Equipment covers and service panels must be
replaced as soon as the work is completed.
● Work on the Daikin Altherma M ECH
O (such
2
as e.g. installation, connection and initial
commissioning) must only be carried out by
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
5
2 x Safety
2.4.3 Site of installation
For safe and fault-free operation, the installation
location of the Daikin Altherma M ECH
O must
2
meet certain criteria. Information on this can be
found in chap. 4.2.
Information on the installation site of other components can be found in the associated documentation supplied with them.
2.4.4 Heating system and sanitary
connection
● Create a heating system according to the
safety requirements of EN 12828.
● With a sanitary connection you must comply
with
N 1717 – Protection against pollution of
–E
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.
The connection of a solar installation, an electric
heating rod or an alternative heat generator may
cause the storage temperature to exceed 60 °C.
● Scalding protection (e.g. VTA32 + Screw
1") must therefore be fitted during instal-
set
lation.
The domestic water quality must comply
with the EU Guideline 98/83 EC and the
regionaly-applicable regulations.
If the Daikin Altherma M ECH
O is connected to
2
a heating system with steel pipes, radiators or
non-diffusion-proof floor heating pipes, sludge
and swarf can enter the hot water storage tank
and cause blockages, local overheating or
corrosion damage.
● To prevent possible damage, fit a dirt filter or
sludge separator into the heating return flow
of the system.
– SAS 1
● The dirt filter must be cleaned at regular
intervals.
2.4.5 Demands on the heating and pressurefree storage 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):
≤ 3 mmol/l
– Conductivity: ≤ 1500 (ideal: ≤ 100) μS/cm
– Chloride: ≤ 250 mg/l
– Sulphate: ≤ 250 mg/l
– pH-values (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.
If a pressurised solar system or optional
external heat source is connected to the
system via the corrugated-tube heat exchanger (Bild 3-1 and Bild 3-2, item 14),
then these minimum requirements also
apply to the fill and top-up water for this
heating circuit.
2.4.6 Operation
The Daikin Altherma M ECH
O:
2
● Do not operate until all installation and
connection work is completed.
● Only operate with a completely full storage
tank (Level indicator) and heating circuit.
● Operate at a maximum pressure of 3 bar.
● Only connect with a pressure reducer on the
external water supply (supply line).
● only operate if the protective cover is installed.
The specified servicing intervals should be
adhered to and inspection work must be carried out.
2.4.7 Instruct the owner
● Before you hand over the Daikin Altherma M
ECH
O, explain to the user how to operate
2
and check the system.
Installation and maintenance instructions
6
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
● Hand over the technical documentation (this
document and all supporting documents) to
the user and advise him that these documents
must be made available at all times and be
stored in the immediate vicinity of the unit.
● Document the handover by filling out the
installation and instruction forms together with
the owner and sign them.
2 x Safety
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
7
3 x Product description
3 Product description
3.1 Design and components
3.1.1 Exterior of the device and interior structure EKHWMX(B)300C
5
4
3UV
DHW
33
3UVB1
17
19
30 12
3
29
28
18
RoConB1
24
RoCon B1
26
25
10
Fig. 3-1 EKHWMX(B)300C design and components (exterior view and interior structure)
Key names, see tab. 3-1
Installation and maintenance instructions
8
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
3 x Product description
3.1.2
Exterior of the device and interior structure EKHWMX(B)500C
Fig. 3-2 EKHWMX(B)500C design and components (exterior view and interior structure)
Key names, see tab. 3-1
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
9
3 x Product description
3.1.3 Upper side of the device
Fig. 3-3 Design and components (all types):
upper side of the device
Installation and maintenance instructions
10
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
3 x Product description
1 Solar feed or connection for further
heat source (1" IG)
2 Cold water connection (1" AG)
3 Hot water (1" AG)
4 Heating feed (1" AG)*
5 Heating return flow (1" AG)*
7a Recommended accessories:
non-return valves (2x)
8 Automatic bleeder
9 Storage tank (double walled jacket made
of polypropylene with PUR hard foam heat
insulation)
10 Filling and draining connection or
solar return flow connection
11 Mount for solar controller or handle
12 Heat exchanger (stainless steel) for do-
mestic hot water heating
13 Heat exchanger (stainless steel) for stor-
age tank charging and heating support
14 Heat exchanger (stainless steel) for pres-
surised solar system charging (type
EKHWMXB… only)
15 Connection for optional electric backup
heater EKBUxx (R 1½" IG)
16 Solar - inflow layering pipe
17 Fill level indicator (storage tank water)
18 Optional: electric backup heater
(EKBUxx)
19 Sensor immersion sleeve for storage tank
temperature sensor t
20 Pressure-free storage tank water
DHW
21 Solar zone
22 Hot water zone
23 Safety overflow connection
24 Mount for handle
25 Rating plate
26 Cover
27
Solar return flow
28 Solar feed (3/4" IG + 1" AG)
(type EKHWMXB… only)
29 Solar return flow (3/4" IG + 1" AG)
(type EKHWMXB… only)
30 Discharge fitting cover
31 Outdoor unit water inlet connection
(1" AG)*
32 Outdoor unit water outlet connection
(1" IG)*
33 Vent valve (manual)
34 Ball cock (heating circuit)*
35 Combined filling and draining valve (heat-
ing circuit)
38 Diaphragm expansion vessel connection
39 Controller housing with electr. connector
block
40 Holding burls for protective cover
41 EKSRPS4A
Optional: Daikin solar control and
pump unit
3UVB1
3-way switch valve (internal heat generator circuit)
3UV DHW
3-way switch valve (hot water / heating)
P
Pressure sensor
hyd
MAG
Diaphragm expansion vessel (optional)
SV Safety pressure relief valve (heating cir-
cuit)
t
DHW
Storage tank temperature sensor
t
V, BH
Backup heater feed temperature sensor
RoCon B1
Daikin Altherma M ECH2O controller control panel
Safety devices
Observe tightening torque!
AG External thread
IG Internal thread
* Ball cock (1" IG) is supplied.
Tab. 3-1 Legend for fig. 3-1 to fig. 3-3
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
11
4 x Set-up and installation
4 Set-up and installation
WARNING!
Cooling systems (heating pumps), climate control systems and heating devices that have been set
up and installed incorrectly can both endanger life and health of people and be impaired in their function.
Work on the Daikin Altherma M ECH
O (such as e.g. installation, repair, connection and initial com-
2
missioning) must only be carried out by persons who are authorised, who have successfully completed qualifying technical or vocational training for the respective activity and who have taken
part in advanced training sessions recognised by the relevant responsible authority. This especially
includes heating specialists and specialist electricians, who have experience in the proper
installation and maintenance of heating systems due to their technical training and specialist
knowledge.
Installation and maintenance instructions
12
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
4.1 Dimensions and connections
4.1.1 EKHWMX(B)300C
4 x Set-up and installation
1 Solar inflow
2 Cold water
3 Hot water
4 Heating flow
5 Heating return flow
6 Outdoor unit water outlet connection
Fig. 4-1 EKHWMX(B)300C connections and dimensions
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
7 Outdoor unit water inlet connection
8 Solar feed (type EKHWMXB… only)
9 Solar return (type EKHWMXB… only)
A Front
B Rear
Installation and maintenance instructions
13
4 x Set-up and installation
4.1.2 EKHWMX(B)500C
1 Solar inflow
2 Cold water
3 Hot water
4 Heating flow
5 Heating return flow
6 Outdoor unit water outlet connection
Fig. 4-2 EKHWMX(B)500C connections and dimensions
Installation and maintenance instructions
14
7 Outdoor unit water inlet connection
8 Solar feed (type EKHWMXB… only)
9 Solar return (type EKHWMXB… only)
A Front
B Rear
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
4 x Set-up and installation
4.1.3 Scope of delivery
– Daikin Altherma M ECH2O
– Bag of accessories (see fig. 4-3)
4.2 Installation
CAUTION!
● Only install the Daikin Altherma M ECH
O if
2
a sufficient ground carrying capacity of
1050 kg/m² plus safety margin is ensured.
The ground must be flat and level.
● Outdoor installation is not permissible.
● Installation in an explosion-risk environment
is not permissible.
● The electronic controller must never be
exposed to the effects of weather.
● The storage tank may not be exposed to
continuous direct sunlight, as the UV radi-
ation and the effects of the weather will
damage the plastic.
● The Daikin Altherma M ECH
O must be
2
installed protected from frost.
● Make sure that the supply company does
not provide corrosive domestic water.
– Suitable water treatment may be
required.
A Handles (only required for
transport)
B Cover screen
C Hose connecting piece for
safety overflow
D Spanner
Fig. 4-3 Contents of bag of accessories
E Ball cock
F Flat seal
G O-ring
H Cable tie
I Plug bracket
J Venting tube
K Cover drain hose
WARNING!
The plastic wall of the storage tank of the Daikin
Altherma M ECH
O can melt under the effects
2
of external heat (>80 °C) and, in the extreme
case, can catch fire.
● Only install the Daikin Altherma M ECH
O
2
with a minimum distance of 1 m to other heat
sources (>80 °C) (e.g. electrical heater, oil
heater, chimney) and the material to be combusted.
CAUTION!
If the Daikin Altherma M ECH
O is not installed
2
a sufficient distance below the flat solar panels
(the top edge of the storage tank is higher than
the bottom edge of the solar panels), the
unpressurised solar system in the outdoor area
will not be able to drain completely.
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
● Install the Daikin Altherma M ECH
O suffi-
2
ciently low at the flat solar panels (observe
minimum gradient in the solar connection
lines) in the case of a DrainBack solar connection.
Installation and maintenance instructions
15
4 x Set-up and installation
● Remove packing and dispose of it in an environment-friendly
manner.
● Pull off the cover screens (fig. 4-4, item B) from the storage
tank and unscrew the threaded fittings (fig. 4-4, item F) from
the openings at which the handles are to be fitted (fig. 3-1 to
fig. 3-2, item 24).
● Screw the handles (fig. 4-4, item A) into the now uncovered
threaded holes.
Observe the installation and operating instructions enclosed
with the accessories (
tightening torque, see chap. 10.4).
≥ 2050
<1000 mm
>80°C
s2
s1
X
A Handle
B Cover screen
Fig. 4-4 Installing the handles
F Threaded piece
1.
max. 10 Nm
5.
1200 mm
X
ኢ
2.
Fig. 4-5 Installation (shown on EKHWMX(B)500C with installation of
the optional backup heater)
3.
4.
● Install the Daikin Altherma M ECH2O at the installation site.
– Recommended clearances (fig. 4-5):
From the wall: (s1) ≥ 100 mm, (s2) ≥ 500 mm.
From the ceiling (X): ≥ 1200 mm, at least 480 mm.
– Transport the Daikin Altherma M ECH
O using the han-
2
dles.
– When setting up the unit in a cabinet, behind panels or in
other restricted conditions, sufficient ventilation (e.g.,
using ventilation gratings) must be ensured.
● If required, install the optional backup heater (EKBUxx) in the
Daikin Altherma M ECH
Installation and maintenance instructions
O (fig. 4-5).
2
16
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
4.3 Removing the cover and thermal insulation
● Raise the cover at the rear and remove forwards.
Fig. 4-6 Remove the protective cover
If the installation conditions require the hydraulic connection directly upwards, the cover can be cut out along
the broken line.
4 x Set-up and installation
CAUTION!
The thermal insulation (fig. 4-8, item A) consists
of pressure-sensitive EPP moulded parts that
can be easily damaged if not handled correctly.
● Only remove the thermal insulation in the
order stated below and in the stated directions.
● Do not use force.
● Do not use tools.
● Remove the thermal insulation in the following order:
– Pull the side insulating element off horizontally (fig. 4-9,
item A).
– Pull the rear insulating element off horizontally (fig. 4-9,
item B).
– Pull the front insulating element off horizontally (fig. 4-9,
item C).
Fig. 4-7 Producing the cover cut-out
Fig. 4-8 Daikin Altherma M ECH2O without protective cover
Fig. 4-9 Removing the top thermal insulation
● As required: Remove the bottom thermal insulation in the fol-
lowing order:
– Pull the side insulating element off vertically (fig. 4-10,
item A).
– Pull the rear insulating element off vertically (fig. 4-10,
item B).
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
17
4 x Set-up and installation
CAUTION!
Fig. 4-10 Removing the bottom thermal insulation
The thermal insulation is installed in reverse order.
If the Daikin Altherma M ECH
O is connected to
2
a cold water supply line in which steel pipes are
used, swarf can enter the stainless steel corrugated tube heat exchanger and remain there.
This can lead to contact corrosion damage
and subsequently to leakage.
● Flush the feed pipes before filling the heat
exchanger.
● Install a dirt filter in the cold water supply (see
chap. 2.4.4).
EKHWMXB300C AND
EKHWMXB500C ONLY
CAUTION!
If the heat exchanger for pressurised solar
system charging (fig. 4-1 / fig. 4-2, items 8+9)
is connected to an external heater (e.g. woodburning boiler), the Daikin Altherma M ECH
O
2
can be damaged or destroyed due to an excessively high feed temperature at these connections.
4.4 Water connection
CAUTION!
If the Daikin Altherma M ECH
O is connected to
2
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.
● Flush the feed pipes before filling the heat
exchanger.
● Rinse out the heat distribution network (in the
existing heating system).
● Install a dirt filter or sludge separator in the
heating return flow (see chap. 2.4.4).
● The inflow temperature of the external heat-
ing unit should be limited to max. 95 °C.
In accordance with EN 12828 a safety valve that limits
the maximum permissible operating pressure in the
heating system must be installed on or in the immediate
vicinity of the heat generator. There may not be any
hydraulic blocking elements between the heat generator and the
safety valve.
Any steam or heating water which may escape must be drained
by a suitable blow-off line with constant gradient in a frost-protected, safe and observable manner.
A diaphragm expansion vessel suitably sized and preset for the
heating system must be connected to the Daikin Altherma M
ECH
O. There may not be any hydraulic blocking elements
2
between the heat generator and the diaphragm expansion vessel.
Daikin recommends installing a mechanical pressure gauge for
filling the heating system.
● Observe the stipulations of EN 806 and DIN 1988 for domestic water pipes.
● Install the Daikin Altherma M ECH
point to dispense with the need for a circulation line. If a circulation line is mandatory, it must be installed according to
the schematic diagrams in chap. 9 "Hydraulic system connection".
O close to the withdrawal
2
Installation and maintenance instructions
18
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
4.4.1 Aligning the connections of the heating supply
and return
The connections of the heating supply and return can be directed
upwards or backwards in order to adapt it optimally to the structural conditions of the installation site (see fig. 4-11).
Fig. 4-11 Variants for aligning the heating feed and return
The device is supplied with upwards aligned connections as
standard. The following conversion steps are required in order to
direct the connections to the rear out of the device:
● Remove the protective cover and top thermal insulation (see
chap. 4.3).
4 x Set-up and installation
CAUTION!
When working on the hydraulics, pay attention
to the installation position of the O-rings to avoid
damaging them and causing leaks.
● Always place O-rings on the part to be
inserted after a plug connection has been
removed or before it is installed (see
fig. 4-13).
● Connection of heating lines by plug connection must be without tension. Establish suitable tension relief particularly for connection
with flexible lines (not breathable!).
Fig. 4-12 Aligning the heating supply and return upwards
● Pull the two plug brackets off the connection couplings
(fig. 4-12, item C).
● Pull off the two connection couplings (fig. 4-12, item B).
Fig. 4-13 Assembly of the plug connections
● Remove the retaining plate (fig. 4-12, item A).
● Pull off the sealing plug plug bracket (fig. 4-12, item D).
● Pull out the sealing plug (fig. 4-12, item E).
● Turn the elbow (fig. 4-12, item H) 90° to the rear.
● Pull the plug bracket off the manifold (fig. 4-12, item G).
● Carefully pull the manifold (fig. 4-12, item F) so far backwards
out of its horizontal mounting that the retaining plate
(fig. 4-14, item A) can be pushed vertically in between.
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Fig. 4-14 Heating supply and return connections aligned to the rear
Installation and maintenance instructions
19
4 x Set-up and installation
● Slide the retaining plate between the manifold and its horizontal mounting and insert the manifold (fig. 4-14, item F) back
into its mounting through the middle hole of the retaining
plate.
CAUTION!
If the plug brackets cannot be put on properly,
the couplings can be detached from their
mountings to ensure a very strong or continuous
escape of liquid can occur.
● Before putting on a plug bracket, make sure
that the plug bracket engages in the coupling
groove. To do so, insert the coupling far
enough into the mounting that the groove is
visible through the plug bracket mounting.
● Insert the plug bracket up to the end stop.
● Secure the manifold with plug bracket (fig. 4-14, item G) in its
mounting again.
● Insert the two connection couplings (fig. 4-14, item B) into the
lateral mountings through the retaining plate.
● Secure the two connection couplings with plug brackets
(fig. 4-14, item C) in their mountings.
● Insert the sealing plug (fig. 4-14, item E) into the upper
mounting.
● Secure the sealing plug with plug bracket (fig. 4-14, item D).
● Cut out side openings in the thermal insulation (fig. 4-15,
item A) using a suitable tool.
4.4.2 Connecting hydraulic lines
Prerequisite: optional accessories (e.g. solar, backup heater) are
mounted on the Daikin Altherma M ECH
enclosed instructions.
● Check cold water pressure (maximum 6 bar).
– If a higher pressure is present in the domestic water pipe,
a pressure reducer will need to be installed.
● Establish hydraulic connections on the Daikin Altherma M
ECH
O.
2
– Refer to fig. 4-1 / fig. 4-2 and tab. 3-1 for the position and
dimensions of the heater connections and the outdoor unit
connections. The details of the hydraulic connection from
the indoor unit to the water inlet and outlet of the outdoor
unit can be seen in fig. 4-16.
Fig. 4-16 Establishing the hydraulic connection to the outdoor unit
– Pay attention to the stipulated tightening torque (see
chap. 10.4 "Tightening torque"). To avoid damage, apply
the necessary counter-torque with a suitable tool, see
fig. 4-17.
O as specified in the
2
Fig. 4-15 Cut-out in thermal insulation
Installation and maintenance instructions
20
Fig. 4-17 Establishing the heating connections
– Install the line so that the sound insulation hood can be
positioned easily after installation.
– For rearward facing connections: Support hydraulic lines
suitably according to the spatial conditions, see fig. 4-18.
Solar storage tank with heating controller
Daikin Altherma M ECH2O
008.1446799_00 – 07/2019 – EN
Fig. 4-18 Supporting rear-facing hydraulic lines
– Connect the water for filling or refilling the heating system
as per EN
1717 so that contamination of the drinking
water due to return flow is reliably prevented.
● Connect the drain line to the safety overpressure valve and
diaphragm expansion vessel as per EN 12828.
– Check the seat of the drain hose on the pressure relief
valve.
– If necessary, connect and install a separate hose.
● Carefully insulate pipework against heat loss and to avoid
condensation (insulation thickness at least 20 mm).
– Water shortage protection: the controller's pressure and
temperature monitoring function shuts off the Daikin Altherma
M ECH
water shortage protection is needed in the construction.
– Damage due to deposits and corrosion: observe the rele-
vant technical rules to avoid corrosion products and deposits.
Minimum requirements regarding the quality of filling and supplementary water:
– Water hardness (calcium and magnesium, calculated as
– Conductivity: ≤ 1500 (ideal: ≤ 100) μS/cm
– Chloride: ≤ 250 mg/l
– Sulphate: ≤ 250 mg/l
– pH-values (heating water): 6.5 - 8.5
O reliably if there is a shortage of water. No additional
2
calcium carbonate): ≤ 3 mmol/l
4 x Set-up and installation
Fig. 4-19 Installation of drain hose at safety overflow
● Connect the discharge fitting on the cover (fig. 3-3, item 30)
to the waste water installation with the enclosed hose section.
● Connecting a diaphragm expansion vessel (see fig. 4-20)
– Connect a suitably dimensioned and preset diaphragm
expansion vessel for the heating system. There must not
be any hydraulic blocking elements between the heat
generator and the safety valve.
– Position the diaphragm expansion vessel in an easily
accessible place (maintenance, parts replacement)
Measures for desalination, softening, hardness stabilisation or
other suitable conditioning measures are necessary to adhere to
the required water quality if the filling and top-up water have a
high overall hardness or other properties that deviate from the
minimum requirements.
WARNING!
There is a danger of scalding at hot water temperatures over 60 °C. This is possible when
using solar energy if an external heater is connected, the Legionella protection is activated, or
the target hot water temperature is set to be
greater than 60 °C.
● Install scalding protection (hot water mixing
facility (e.g. VTA32 + Screw set 1").
● Connect the drain hose to the hose connector for the safety
overflow (fig. 3-1 to fig. 3-3, item 23).
– Use transparent drain hose (draining water must be visi-
ble).
– Connect the drain hose to an adequately dimensioned
waste water installation.
– Drain should not be lockable.
Fig. 4-20 Mounting the diaphragm expansion vessel
Daikin Altherma M ECH2O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
21
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