EC POWER XRGI 20G-TO, Руководство пользователя

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Version 1.0 - 2012 Manual XrGi 20G-To
3.3.1.4. exhaust gas heat exchanger
3.3.1.5. electrical connections
The fresh air supply and the exhaust lines must meet installation type B rules (depending on air space). Connections may only
be carried out by a specialist.
The Power Unit is not designed for condensing operation. However, a condensate drain must be fitted to trap the condensate
which develops when the system is started up. A condensate box with a large water reserve or siphon with ball valve connec-
tion or the like must be fitted to prevent the condensate drain from drying out.
The exhaust gas flow rate at full load is 0.0325 kg/s with a residual oxygen content of 7.2 % and 0.0128 kg/s at part load with
a residual oxygen content of 6.5 %. The exhaust gas temperature reaches 110 °C when the device is new, but may increase
to 140 °C in use. If the cooling water temperature in the exhaust gas heat exchanger exceeds 120 °C, the safety temperature
control switches the system off. As the exhaust temperatures involved are continuously close the permissible limit and the
XRGI mainly runs for long periods, exhaust pipes of temperature class T160 or higher should be used.
The pressure drop in the exhaust system must not exceed 20 mbar. The back pressure of the exhaust gas is monitored by a
safety pressure control valve at the inlet to the exhaust gas heat exchanger.
The exhaust system must be pressure-tight (pressure resistant up to 5000 Pa, Type H1 or H2). Only rubber lined pipe clips
may be used to attach pipes to the building. The exhaust connection is designed to take the double-walled exhaust system
which is available as an accessory (double-walled aluminium tube DN 60/100). Exhaust and condensate pipes must not be
laid horizontally: they must slope at least 2 % so the condensate can run off.
The exhaust with an internal diameter of 60 mm and up to five bends can be approximately 20 m long. If there are more than
five bends or if the pipe is longer, extrapolate according to DIN 4705 as required.
In principle, each XRGI needs a separate exhaust pipe. Exhaust pipes can be cascaded from the Power Unit side; but the ma-
nufacturers must approve the exhaust pipe used for this purpose. In this case it is necessary to extrapolate pressure conditions
in particular according to DIN 4705. Consult your district master chimney sweep before installing the XRGI system.
You can add an exhaust gas heat exchanger to the Power Unit to optimise the thermal efficiency. However, a notable increase
in yield can only be achieved in condensing operation. The return temperatures from the heating system should permanently
be below 45-50 °C for this purpose.
The Power Unit has a 63 A CEE socket at the back for the generator cable (H07RN-F 4 x 10 mm², max. 10 m long) connected
to the IQ-Control Panel. The Power Unit is equipped with protective switches for the engine, RCBs and a grid monitoring relay
for emergency shutdown in the IQ-Control Panel. Three more control lines and a network cable are required for the communi-
cation between the IQ-Control Panel and the Power Unit:
1. 10 x 0.75 mm², NSSHÖU-J 12G0, 75, sh ground connection / for 24 V DC
2. 4 x 0.75 mm², NSSHÖU-J 5G0, 75, sh ground connection / for 24 V DC
3. 2 x 0.75 mm², NSSHÖU-J 5G0, 75, sh ground connection / for 230 V AC
4. 1 x SFTP CAT6 RJ45
Note: if you are planning to install the exhaust pie in an existing chimney, make sure to consult your
district master chimney sweep in the design stage.