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22-GB
Instruction manual - GB
GB
When installing the boiler, we recommend using a closed expansion tank. However, an
open tank may also be used if permitted in the standards of the specific country. The
boiler must always be installed in a way which prevents overheating (and subsequent
damage) even during a power cut. It is because the boiler has certain momentum.
There are several ways of protecting the boiler against overheating. Connecting an
overheat prevention cooling loop with a TS 131 3/4 ZA (95/110 °C) or WATTS STS 20
(97 °C) valve to the public water system. In cases of personal wells, the boiler can be
additionally protected by using a back-up power supply (battery with an exchanger)
for operation back up of at least one pump. Another option is connecting the boiler to
an after-cooling tank and reversal zone valve.
When installing the boiler, position the rear section 10 mm higher (prop it up) in order
to facilitate circulating and air-bleeding.
For the heating system regulation we recommend regulation elements provided by
the following companies:
a) ATMOS ACD 01 tel.: +420 326 701 404
b) KOMEXTHERM, Praha
tel.: +420 235 313 284
c) KTR, Uherský Brod
tel.: +420 572 633 985
d) Landis & Staefa
tel.: +420 261 342 382
20. Boiler corrosion protection
The specified solution is connecting the boiler with
Laddomat 21/22
or with a thermoregulatory
valve, which can separate the boiler circuit from the heating circuit (primary and secondary circuits),
and provide
minimum of 65 °C for water returning to boiler
. The higher the temperature of water
returning to the boiler, the fewer tars and acids condensing; which damage the boiler. Temperature of
the outgoing water must permanently range between 80 - 90 °C. The combustion products (waste gas)
temperature must not drop
below 110 °C
during normal operation. Low waste gas temperature caus-
es condensation of tars and acids even when the specified outgoing water temperature of 80 - 90 °C
and returning water temperature of 65 °C are adhered to. These conditions may occur with for exam-
ple incorrectly set output of pellet burner (small power) or when burning wood. For outputs of 15 - 100
kW it is also possible to keep the minimum temperature of the returning water (65 - 75 °C) by utilising
a three-way mixing valve with an electric actuator and electronic regulation etc. ACD01.
CAUTION -
We recommend installing boilers D15P, D20P, D30P, D40P, D50P with equ-
alizing tank of size at least 500 Lt. to 1000 Lt. It helps to decrease fuel and electricity con-
sumption and increase service life all electric elements.
