R3400 Technical data - Rendamax
R3400 Technical data - Rendamax
R3400 Technical data - Rendamax
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<strong>Rendamax</strong><br />
The gas connection is made at the rear of the boiler.<br />
Types R3401, R3402, the R3501 - R3505 and R3601 - R3605 are not suitable for immediate connection<br />
to a 100 mbar natural gas system (as option 100 mbar). The pressure of the gas sup-plied to<br />
the unit must be reduced to 25 mbar for natural gas or 50 mbar for propane with the use of a gas<br />
pressure regulator.<br />
From type R3403, all boilers are suitable for gas supply pres sures of 100 mbar on natural gas.<br />
The loss of pressure in the connecting pipes must be such that, at maximum boiler capacity, the<br />
pressure must never fall below 18 mbar for natural gas or 50 mbar for propane.<br />
5.3.2 Electrical connection<br />
The electrical connections and provisions must comply with the applicable national and local<br />
standards and regulations.<br />
The units are wired in accordance with the electrical diagram supplied with the appliance.<br />
w<br />
The electrical connections, the terminals and the boiler pump relay are mounted in a separate<br />
connection box behind the front panel (extrusion profile, fig. 4).<br />
This front panel can be simply removed by pulling the lower edge of the panel forward. Behind<br />
this panel are two cover plates which can be removed by unscrewing the M5 bolts. The terminal<br />
strip with the connection clamps are mounted behind the lower cover plate.<br />
The cables to be connected (power supply, control) enter the appliance via the rear of the unit,<br />
and pass via the cable duct at the inner right hand side to the connection box at the front of the<br />
unit. The connection box is provided with cable glands and connection terminals. The boiler pump<br />
is provided with thermal protection and a pump relay.<br />
control panel<br />
transformer 230-24-25V<br />
CXE/EM<br />
mains filter<br />
frequency converter<br />
terminal strip with<br />
terminal functions<br />
cable glands<br />
boiler pump relay<br />
Fig. 16<br />
Connection box<br />
The appliance can be switched on and off with the switch on the control panel. The power supply<br />
voltage cannot be removed from the boiler pump relay in this way.<br />
x<br />
The installer must fit a mains isolator switch in the power supply to the unit within the boiler<br />
room. This can be used to switch off the power to the unit for maintenance purposes or in the<br />
event of a problem.<br />
26 Doc890/3456CV02B
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