Viessmann VITOCAL 160-A - Page 5

Type WWKS (with solar facility)
The Vitocal 160-A, type WWKS is designed for DHW heating with solar backup. The integral indirect solar coil enables the connection of flat-
plate collectors up to 6 m
2
area or tube collectors with up to 3 m
2
collector area. An electronic temperature differential control unit is integrated
into the Vitocal 160-A.
B
D
G
E
F
§
B
Vitocal 160-A, type WWKS (for circulating mode)
D
Condensate drain
E
Solar collectors
F
Solar-Divicon
G
Cold water connection
Circulating mode
DHW heating via the heat pump and reheating via the electronic
immersion heater as in
!
.
Depending upon the temperature differential between the DHW cylin-
der and the solar collector the electronic temperature differential con-
trol unit switches the solar circuit pump on or off. When the solar circuit
pump is switched on the heat pump will not provide DHW heating.
B
D
G
C
C
E
F
$
B
Vitocal 160-A, type WWKS (for extract mode)
C
Ventilation element
D
Condensate drain
E
Solar collectors
F
Solar-Divicon
G
Cold water connection
Extract mode
DHW heating via the heat pump and ventilation operation as in
?
.
The water is reheated by the electric immersion heater as in
!
. Solar
DHW heating is identical to
§
.
Principles
(cont.)
VITOCAL 160-A
VIESMANN
5
5822 485 GB
1