Solar Energy FWS 20 Guía rápida
Fresh Water Station
Installation and
Instruction manual
FWS 20
For tradesman
Accurately read before installing
EN
2E & OE, subject to change without notice.
Usage1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety instructions and symbol legend2 3
Safety instructions2.1 . . . . . . . . . . . . . . . . . 3
Symbol legend2.2 . . . . . . . . . . . . . . . . . . . 4
Scope of delivery3 . . . . . . . . . . . . . . . . . . 4
Provisions4 . . . . . . . . . . . . . . . . . . . . . . . . 5
Statutory provisions4.1 . . . . . . . . . . . . . . . 5
Manufacturer’s specifications4.2 . . . . . . . . 5
Technical data5 . . . . . . . . . . . . . . . . . . . . 6
Installation6 . . . . . . . . . . . . . . . . . . . . . . . 7
Installation on buffer tank6.1 . . . . . . . . . . . 7
Wall fastening6.2 . . . . . . . . . . . . . . . . . . . . 8
Hydraulic installation6.3 . . . . . . . . . . . . . . . 9
Circulation unit (optional)6.4 . . . . . . . . . . . 10
Design of circulation unit6.4.1 . . . . . . . . . . . . . . 10
Installation of circulation unit6.4.2 . . . . . . . . . . . 11
Electric connection of circulation unit6.4.3 . . . . . 11
Operating modes of circulation unit6.4.4 . . . . . . 12
Initiation7 . . . . . . . . . . . . . . . . . . . . . . . . 13
Malfunctions8 . . . . . . . . . . . . . . . . . . . . 14
No hot water8.1 . . . . . . . . . . . . . . . . . . . . 14
No circulation8.2 . . . . . . . . . . . . . . . . . . . 15
No/wrong switching times8.3 . . . . . . . . . . 15
Constant circulation mode8.4 . . . . . . . . . 15
Fresh Water Station leaks8.5 . . . . . . . . . . 15
Terms of warranty9 . . . . . . . . . . . . . . . . 16
Appendix10 . . . . . . . . . . . . . . . . . . . . . . . . 17
Example of use10.1 . . . . . . . . . . . . . . . . . . 17
Cascade connection10.2 . . . . . . . . . . . . . . 18
Table of contents
Table of contents
3Usage
E & OE, subject to change without notice.
Usage1
The Fresh Water Station is used to heat up tap
water in connection with a buffer tank. It will be
installed next to the buffer tank at the wall or
directly onto the buffer tank at special system
solutions.
Another use or installation is not intended. The
manufacturer is not liable for damages due to
inappropriate use and the operator bears the risk.
Do not connect the Fresh Water station directly to
any heat generator.
The Fresh Water Station includes a self-sufficient
regulation and can be upgraded with an optional
circulation unit.
Safety instructions and symbol legend2
Safety instructions2.1
The installation, initiation and maintenance►
must only be accomplished by qualified tech-
nical professionals.
The operation of this device is not allowed to►
persons (including children) with limited physi-
cal, sensory or intellectual abilities. Uninformed
or unacquainted persons may operate the de-
vice only under the supervision or at a trained
person’s disposition.
Replacements or repairing of electrical parts►
like the power cord must be conducted by a
professional electrician.
Follow the instructions in this manual closely►
to ensure proper functioning.
Exclusively use the Fresh Water Station for►
heating up tap water.
Only install the device in dry and frost-free►
locations.
Operate the device only at ambient tempera-►
tures between +2°C and +40°C.
Interrupt the power supply of the heating sy-►
stem (230 V/AC) prior to installation.
During operation the device can heat up and►
burns are possible.
The device must be connected to an exter-►
nal circuit breaker to allow a shutdown at any
time.
Installation and operation must be performed►
according to regional laws, regulations and
common practice.
At the occurrence of malfunctions – regardless►
of nature – please contact your authorized
technical professional.
4Scope of delivery E & OE, subject to change without notice.
Scope of delivery3
Symbol legend2.2
Safety instructions
are marked with a warning triangle as
illustrated on the left.
Safety instructions indicate important information
for potentially dangerous situations for person
and device. Additional buzzwords describe nature
and severity of the danger.
Advices
are marked with an information sign
as illustrated on the left..
Advices highlight important information for situa-
tions without severe danger for person and de-
vice.
max. tightening
torque [Nm]
ti ht i
Screw wrench
indicates the maximum tighte-
ning torque and the rotational
direction.
Fresh Water Station
Fresh Water StationPicture 1:
Connection Set
Connection setPicture 2:
Mounting Set
Mounting setPicture 3:
5Provisions
E & OE, subject to change without notice.
Provisions4
Statutory provisions4.1
The Device must be installed and operated accor-
ding to the following norms and country specific
directives and provisions.
DIN EN 12828•
DIN 1988•
DIN 4708•
DIN 4753•
DIN 4757•
DIN 18380•
DIN 18381•
DIN 18382•
DIN EN 12975•
VDE 0100•
VDE 0185•
VDE 0190•
ÖNORM H5195•
Manufacturer’s specifications4.2
The stated values are guideline values which can
deviate under certain operating conditions.
Material damage
Deviations from the values stated in
table 1 may lead to damages and
functional limitations of the device.
Noncompliance with these values
leads inevitably to a loss of guarantee.
Material damage
For operating the Fresh Water Station, the following specific values have to be adhered:
permissible dissolved matter and maximum values.Table 1:
Dissolved matter Unit Specific values (copper brazed)
pH-value 7-9 (considering Saturation index)
Saturation index (delta pH-value) -0,2 < 0 < +0,2
Degree of hardness °dH 6-15
conductivity μS/cm 10...500
Filterable matter mg/l <30
Free chlorine mg/l <0,5
Hydrosulfide (H2S) mg/l <0,05
Ammoniac (NH3/NH4+) mg/l <2
Sulfate mg/l <100
Hydrocarbonate mg/l <300
Hydrocarbonate/Sulfate mg/l >1,0
Sulfide mg/l <1
Nitrate mg/l <100
Nitrite mg/l <0,1
Iron, solute mg/l <0,2
manganese mg/l <0,1
Free aggressive carbonic acid mg/l <20
6Technical data E & OE, subject to change without notice.
Technical data5
8
7
5
4
3
2
1
6
B
C
AD
E
9
1 Thermostatic head
2 Electricity box
3 Plate heat exchanger
4 Flow-Switch
5 Charge pump
6 Coiled probe
7 Push-in connection for
circulation unit (incl.
blind cap)
8 Circulation unit (optional)
9 Bleed screw charge
pump
A Cold water
B Hot water
C From buffer tank ( ow)
D To buffer tank (return)
E Circulation pipe (not
included)
Design of Fresh Water StationPicture 4:
Fresh Water Station 20
Max. flow rate 20 l/min
Charge pump 230 V (50 Hz)
Rotation speed 2200 U/min
Power input 95 W
Nominal current 0,4 A
Circulation unit 230 V (50 Hz)
Power input 8 W
Nominal current < 0,1 A
Max. operating pressure
Tap water circuit 10 bar
Buffer water circuit 3 bar
PPEnoitalusnI
gk71thgieW
Fresh Water Station 30
Temperatures min. - max.
Ambiance 2°C - 40°C
Buffer water 2°C - 95°C
Dimensions
mm004htdiW
mm008thgieH
mm033htpeD
Connections
Cold water G1” internal thread
Hot water G1” internal thread
Buffer ow G1” external thread
Buffer return G1” external thread
Circulation G ½“ internal thread
Technical dataTable 2:
7Installation
E & OE, subject to change without notice.
Installation6
Material damage
Avoid tightening torque and force
effects on already installed parts and
connections of the device.
Regulation
The Fresh Water Station includes a
self-sufficient regulation. An additional
external regulation is not intended and
not allowed..
Installation on buffer tank6.1
1
10 mm 40 mm
max. 10 Nm
Installation of Fresh Water StationPicture 5:
3
max. 70 Nm
Installation of connection setPicture 6:
2
max. 70 Nm
Installation of water pipingPicture 7:
4
90°
90°
45°
Shaping of flexible hosesPicture 8:
0
N
m
m
max. 70 Nm
8Installation E & OE, subject to change without notice.
Wall fastening6.2
5
Final assembly of shaped connection setPicture 9:
1
2
1
2
3
Wall fasteningPicture 10:
max. 70 Nm
4
max. 10 Nm
60
min. 80
S12
12 mm
Ø12
max. 70 N
70 N
10 Nm
0N
9Installation
E & OE, subject to change without notice.
Hydraulic installation6.3
Install the hydraulic piping according to the in-
structions in chapter 6.1 or 6.2.
Piping
Piping between buffer tank and Fresh
Water Station ought to be as short as
possible.
When using different piping materials take care of
the installation sequence to avoid electrochemical
corrosion.
Personal and material damage
The tap water supply needs to be
constructed according to specification
(see picture 12).
Specification of tap water supplyPicture 12:
9
10
13
14
15
16
17
K
Expansion vessel (optional)
Manometer
Security valve (6bar)
Cut-off valve
Backflow preventer
Pressure reducer (necessary if K >= 6 bar)
Fine filter
Tap water main connection
9
13
14
10
15 16 14
K
800
400
359,5
Drilling plan for wall fastening
Drilling plan for wall fasteningPicture 11:
17
60
min. 80
S12
12 mm
400
800
395,5
Ø12
10 Installation E & OE, subject to change without notice.
Circulation unit (optional)6.4
This chapter is only relevant for Fresh
Water Stations with a circulation unit.
Design of circulation unit6.4.1
1
3
8
9
7
6
2
5
5
4
1 Circulation pump
2 Gasket ring
3 Plug-in adapter
4 Non-return valve
5 Flat gasket
6 Cut-off cock
7 Swivel nut
8 Eccentric tappet
9 Circulation pipe (not
included)
Circulation unitPicture 13:
Tabla de contenidos
