sy24inst2 - The Initiative Group
sy24inst2 - The Initiative Group
sy24inst2 - The Initiative Group
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Rendamax<br />
<strong>The</strong> connection to the drain must be arranged such that there is an open connection under the<br />
condensate discharge point on the appliance (see fig. 8). In addition, the discharge pipe must be<br />
fitted with a trap (U-bend) in accordance with the applicable regulations.<br />
Ensure that the distance between the condensate discharge point of the boiler trap and the drainage<br />
pipe is at least 5 mm. This provides the required open connection and simplifies any subsequent<br />
maintenance activities and inspections.<br />
Fig. 8<br />
Condensate discharge<br />
5.4 Hydraulic system<br />
5.4.1 General<br />
Although it is not the intention to provide a complete handbook covering the most divergent<br />
hydraulic systems, the data is more extensive than would generally be provided in the case of<br />
conventional central heating boilers.<br />
<strong>The</strong> R300 unit is a low water content boiler for which the water flow rates must be within minimum<br />
and maximum values.<br />
Table 8 lists the required relationship between the three para-meters Q (water flow), P (pressure)<br />
and t (temperature) at maximum capacity. Because of the high flow rate, the appliance is less<br />
sensitive to water hardness. <strong>The</strong>refore, the water hardness may not exceed 250 ppm with a supply<br />
temperature of 80°C (see 5.4.5 Water quality).<br />
5.4.2 Water flow<br />
5.4.2.1 Flow rate and resistance<br />
<strong>The</strong> rate of water flow through the appliance must never fall below the required minimum<br />
(otherwise the water flow switch will be activated and the appliance will be shut down). <strong>The</strong> use<br />
of valves, non-return valves, systems in which several appliances are connected to a common<br />
transport system, etc., must not interfere with the required water circulation.<br />
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