STOKVIS ENERGY SYSTEMS ECONOFLAME R30, Установка, эксплуатация и обслуживание

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5.3.5 Condensate drain
x
Condensate water is formed due to the condensation of fl ue gases, and this has to be drained
from the boiler. Pipe the condensate water directly into the waste water drain system. If there is
no direct connection to the drain system, a water collection tank equipped with pump and level
switch may be used to pump the condensate water into the drain system. In view of the acidity,
only plastic drainpipes should be used. Fill the bottle trap with water after installation; the bottle
trap beaker on the bottom of the boiler can be easily removed to do so. Ensure that there is an
open connection between the drain system and the boiler bottle trap. It is not permissible for
condensate to be drained into guttering, since the condensate may freeze.
5.4 Hydraulic system
5.4.1 Water fl ow
5.4.4.1 Flow and resistance
The minimum required water circulation over the boiler should be maintained at all times
(equivalent to ∆t 25 K at full load). The minimum required water circulation should not be adverse-
ly affected by the use of valves, non-return valves, systems in which several boilers are connected
to a common distribution pipe, etc. The maximum water fl ow is achieved at ∆t 15 K.
Type ∆t 20 K Pump data
Nominal
fl ow rate
Q
Boiler re-
sistance
nom. fl ow
R
Pump type WILO Pump
speed
Pump head
at nom.
fl ow
Q
Available
head at
nom. fl ow
Q
Maximum*
Power con-
sumption
m
3
/h KPa KPa KPa W
R30/45 1.68 14 RS 25/6-3 PWM/3c max. 40 26 93
R30/65 2.57 20 RS 25/7-3 PWM/3c max. 49 29 132
R30/85 3.38 25 RS 25/7-3 PWM/3c max. 40 15 132
R30/100 3.78 28 TOP-S 30/7 3 52 24 195
R30/120 4.70 30 TOP-S 30/7 3 42 12 195
Table 9 Water fl ow quantity and pump data for the R30
* Maximum power consumed is given in pump position 3
When using another ∆t you can use the following formula for calculating the fl ow rate and
resistance of the boiler.
Flow rate
Q
T
new
=
∆
20
* Nom. flow rate
Boiler resistance
R
T
new
=
∆

 

20
2
* Boiler res. at nom. flow
After this you have to check the available head of the pump.
The boiler has a pump control circuit. When the boiler is enabled, the pump is switched on. If the
boiler is disabled, the pump will continue to run for a few minutes more. This run on time can be
adjusted. The standard time is 2 minutes.