TECHNICAL INFORMATION / INSTALLATION INSTRUCTIONS
Wagner & Co
RATIOfresh Freshwater Station 250/400
Hygienic Water Heating
A continuous flow process is used to heat potable water
quickly and on demand to a preset temperature.
Excellent Performance
The RATIOfresh 250 unit delivers hot water at up to 25 l/
min. The larger station RATIOfresh 400 even reaches a tap-
ping capacity of 40 l/min and thus is suitable for multi-fam-
ily homes with up to 20 individual apartments.
Functional Design
A modern powder-coated metal casing houses all compo-
nents in a compact design.
Adaptive Microprocessor Controlling
The microprocessor “learns“ the water withdrawal patterns
of users. This means the freely selectable hot water temper-
ature can be maintained precisely even with fluctuating
flow or inlet temperatures within the primary circuit. This
also offers various options of regulating hot water
circulation.
Easy Assembly and Maintenance
The station is suitable for mounting on the wall or the stor-
age tank (in conjunction with all RATIO buffer cylinders and
the additionally available tank expansion kit). Flat sealing
connections simplify assembly and installation as well as all
service tasks. After the hydraulic integration, the ready-to-
plug-in station can be operated immediately as delivered.
Numerous Application Options
The freshwater station can be combined with almost any
heat source. Oil, gas, wood logs and pellet boilers are as
suitable as a solar installation or local or district heating dis-
tribution systems. All it takes is a buffer cylinder whose ther-
mal stratification is supported by minimal return tempera-
tures within the primary circuit.
Protection from Legionella Pneumophila Bacteria
If required, the hot water and the circulation piping net-
work can be thermally disinfected. Time, temperature, and
duration of the disinfection process are individually
adjustable.
Content
1.
Technical Information . . . . . . . . . . . . . . . . . 2
1.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Scope of Delivery . . . . . . . . . . . . . . . . . . . . 3
1.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . 3
2.
Safety Information . . . . . . . . . . . . . . . . . . . 6
2.1 Operator Qualifications . . . . . . . . . . . . . . . . 6
2.2 Intended Use . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Standards and Guidelines . . . . . . . . . . . . . . . 7
2.4 Installation Recommendations . . . . . . . . . . . . 7
3.
Installation . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Prior to the Installation . . . . . . . . . . . . . . . . . 8
3.2 Wall Mounting . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Storage Tank Mounting . . . . . . . . . . . . . . . . 8
3.4 Connecting Potable Water . . . . . . . . . . . . . . . 9
3.5 Connecting Circulation . . . . . . . . . . . . . . . . . 9
3.6 Installing the Primary Circuit . . . . . . . . . . . . . 10
3.7 Switching the Primary Return Flow . . . . . . . . . . 11
3.8 Connecting the Controller . . . . . . . . . . . . . . 11
3.9 Closing the Housing . . . . . . . . . . . . . . . . . . 11
4.
Controller Operation . . . . . . . . . . . . . . . . . 13
4.1 Controller Displays . . . . . . . . . . . . . . . . . . 13
4.2 Controller Settings. . . . . . . . . . . . . . . . . . . 13
4.3 Controller Setting Tables . . . . . . . . . . . . . . . 14
5.
Initial Startup. . . . . . . . . . . . . . . . . . . . . . 19
6.
Notes for Operators . . . . . . . . . . . . . . . . . . 20
7.
Maintenance and Care . . . . . . . . . . . . . . . . 22
8.
Troubleshooting. . . . . . . . . . . . . . . . . . . . 23
9.
System Solutions – Example . . . . . . . . . . . . . 27
Figure 1 RATIOfresh Freshwater Station 250/400.
Solar Thermal / Solar Cylinder
EN-RATIOfresh-250-400_TI-MA-0809-11214900
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