R3400 Technical data - Rendamax
R3400 Technical data - Rendamax
R3400 Technical data - Rendamax
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<strong>Rendamax</strong><br />
Type<br />
UPS 65-120F<br />
R3401 - R3403<br />
R3501 - R3503<br />
R3601 - R3603<br />
UPS 80-120F<br />
R3404 - R3405<br />
R3504 - R3505<br />
R3604 - R3605<br />
Pump<br />
speed<br />
1<br />
2<br />
3<br />
1<br />
2<br />
3<br />
Pmax<br />
W<br />
850<br />
900<br />
1150<br />
1000<br />
1100<br />
1500<br />
Pmin<br />
W<br />
440<br />
460<br />
600<br />
710<br />
760<br />
960<br />
I<br />
A<br />
3x400 V<br />
1.35<br />
1.45<br />
2.15<br />
1.65<br />
1.80<br />
2.75<br />
cos<br />
φ<br />
0.91<br />
0.90<br />
0.77<br />
0.87<br />
0.88<br />
0.79<br />
LM 80-160/162<br />
R3406 - 1500 - 4.05 0.79-0.70<br />
Table 13<br />
Electrical <strong>data</strong> for pumps<br />
5.4.2.3 Isolating valves<br />
It is recommended that manual valves be fitted between the flow and return connections and the<br />
installation.<br />
5.4.2.4 Valves<br />
For <strong>R3400</strong>/R3500/R3600 units connected in cascade, a de layed motorised shut-off valve can be<br />
used if it is controlled by the boiler using terminals 14 + 15 or alternatively, a mechanical non-return<br />
valve can be used. This is required so as to avoid short-circuiting the appliance on the water<br />
side.<br />
5.4.2.5 Water flow protection<br />
The unit is provided with water flow protection. This shuts the appliance down in the event that<br />
the flow of water through the appliance falls below the minimum required value. This protec tion is<br />
implemented by means of a water flow switch.<br />
5.4.3 Water pressure<br />
5.4.3.1 Operating pressure<br />
At a maximum supply temperature of 90°C and a minimum water flow rate such as occurs at a ∆T<br />
y<br />
of 20 K, the minimum operating pressure must be greater than 1.5 bar. The operating pressure<br />
must be measured with the pump switched off. If a lower pressure is desired, the maximum supply<br />
temperature must be adjusted accordingly.<br />
Minimum operating<br />
pressure in bar<br />
›1.5<br />
›1<br />
Flow temperature<br />
°C<br />
90<br />
80<br />
∆T<br />
K<br />
20<br />
20<br />
Table 14<br />
minimum operating pressures<br />
5.4.3.2 Boiler expansion tank<br />
It is advisable to fit an expansion tank in the return pipe be tween pump and the boiler isolating<br />
valve.<br />
5.4.3.3 System expansion tank<br />
The size of the expansion tank is determined by the quantity of water in the system. Our advice is<br />
to fit the system expansion tank at the neutral point (centrally) of the low velocity header.<br />
5.4.3.4 Water pressure protection<br />
All appliances are fitted with a safety valve that opens at 3 bar. As an option, safety valves can be<br />
supplied with settings be tween 3 and 6 bar with increments of 1 bar.<br />
40 Doc890/3456CV02B
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