Installation and operating instructions
Fresh water station WHI freshaqua 22
8 Maintenance
83514302 ▪ 1/2017-08 ▪ Ext. PAW
26-32
The following table shows the relation between the tank temperature and the corre-
sponding maximum tapped flow rate at 45 °C on the fitting (e.g., single-lever mixer).
If the hot water temperature set on the controller is more than 45 °C, the tapped flow rate
here comprises a mixture of hot and cold water together.
The transmission power specified for this is required to heat the water quantity of the
tapped flow rate [l/min] from 10 °C to 45 °C.
Te
m
per
ature
in the
buffer tank
H
ot wat
er tempe
ratur
e
se
t on th
e contr
oll
er
Max. flow rat
e f
rom the
WHI freshaqua with the set hot water
tem
per
atur
e
M
ax. tapp
ed flo
w
rate
at the tap for 45°C hot w
ater tem
per
atu
re
Tran
smi
ssi
on
p
ow
er
of the WHI fres
haqua
WHI freshaqua
WHI freshaqua
WHI freshaqua
50 °C
45 °C
18 l/min
18 l/min
44 kW
60 °C
45 °C
30 l/min
30 l/min
73 kW
50 °C
23 l/min
27 l/min
64 kW
55 °C
17 l/min
22 l/min
52 kW
70 °C
45 °C
38 l/min*
38 l/min
92 kW
50 °C
33 l/min
37 l/min
91 kW
55 °C
27 l/min
34 l/min
84 kW
60 °C
22 l/min
31 l/min
74 kW
80 °C
45 °C
38 l/min*
38 l/min
92 kW
50 °C
38 l/min*
43 l/min
105 kW
55 °C
35 l/min
45 l/min
109 kW
60 °C
30 l/min
42 l/min
102 kW
at a cold water temperature of 10 °C, reheating not taken into account
*maximum flow rate: 38 l/min, with pressure drop of the WHI freshaqua of 1000 mbars (higher values hydraulically only
possible to a limited extent, measuring limit of the flow rate sensor ~42 l/min)
8
Maintenance
The WHI freshaqua modules are low in maintenance. However, as part of the annual
inspection of the domestic water system, the following items should be checked/observed:
Check all connections for leaks
Check the safety equipment
Perform a functional check and check the setting parameters
Plausibility check of the control parameters and nominal values
Check the heat exchanger for dirt and functioning
We recommend concluding a maintenance agreement.
