ALPHA -
OKU SOLAR HEATING FOR SWIMMING POOLS
Instruction for installation an operating
Introduction
Solar heating for swimming pools with OKU-Absorbers normally will be oper ated with a direct circuit.
The water from the pool will be pumped dir ectly through the abs orbers. You don´t have to interpose a
heat exchanger.
Different configurations of OKU swimming pool solar heat ing
1. Operation with filter pump via three-way motor ball valve with
difference-temperature regulation
This configuration can usually be selected if the absorbers are not to
be set up higher than 6 m abov e the surface of the water. The three-
way motor ball valve is integrated into the pr essure line of the filter
installation. Because of the difference-temperature regulation the ball
valve is changed over when the absorber temperature is higher than
the temperature of the water of the swimming pool. The f ilter stream
is then pumped thr ough the abs orbers. The warmed water flows
back into the filter circuit by way of a Tee.
2. Operation with own pump an difference temperature regulation
integrated into the filter circuit
In many cases it may be sensible or even necessary to install a
separate pump for the solar heating. For example when the deliv ery
head from the water level to the absorber panel is more than 6 m.
The water is diverted from the filter installation by way of a Tee and
pumped through the abs orbers by the auxiliary pump. This pump is
switched by the difference-temperature regulation to ens ure that it
only runs to actually win energy. The filter and solar pump are
separately regulated. It is usually advisable to integrate non-return
valves in both the solar and the filter circuit.
3. Operation with own pump and difference-temperature regulation -
piping independent of filter circuit
This configuration is chosen when the filter piping is difficult of
access. The water is sucked out of the swimming pool by an
immersion pipe, pumped thr ough the abs orbers, and the warmed
water is conducted back into the swimming pool. Her e too the
difference temperature regulation ens ures that the pump only r uns
to win energy. If the pump is mounted abov e the water level and the
delivery head is more than 5 m, a non- return valve should be
incorporated.
1) OKU-Absorber
5) Three-way motor bal l valve
9) Stop cock (downdraft brak e)
2) Difference-temperature regul ation OE 1
6) Temperature s ensor, absorbers
10) Drain cock
3) Filter installation
7) Temperature s ensor, swimming pool
11) Pump for s olar circuit
4) Solar circuit forward and return
8) Vent valve
12) Non-return v alve
The water of the swimming pool c an flow through the oku absorbers in either direction, so they can be
mounted both lengthwis e and side by side. The individual rows of absorbers are connected on a Tichelmann
mounted both lengthwis e and side by side. The individual rows of absorbers are connected on a Tichelmann
principle (same routes for each row). It is not advisable to connect more than ten abs orbers in series.
