EC POWER XRGI 20G-TO, Manual

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Version 1.0 - 2012 Manual XrGi 20G-To
3.3.1.3. exhaust connection
No ball valves are required between the Power Unit and the Q60-Heat Distributor. The Q60-Heat Distributor does not contain
a great deal of water. However, if shutoff elements are fitted, at least one of these must be secured to prevent unauthorised
persons from shutting them (remove handle, use fitting with hood, etc.). Otherwise the expansion vessel in the Q60-Heat Dis-
tributor may be separated from the Power Unit accidentally.
The primary circuit safety valve (1.5 bar) is supplied in the Power Unit to prevent the system from being installed without pro-
tecting the engine circuit against excess pressure. To avoid that water enters the engine compartment accidentally, the factory
configuration (Fig. 3.5.) of the safety valve may be changed. A manual vent must then be fitted in the engine compartment
instead of the safety valve.
The expansion vessel for the primary circuit is supplied in the Q60-Heat Distributor. It has a capacity of 5 l, and provides a water
reserve of just 1-1½ l. The engine circuit must be bled very thoroughly when it is commissioned in order to avoid problems. If
enough space is available, the water reserve should be supplemented with another expansion vessel (to be provided by the
client) in the return with a capacity of approx. 35 l. The upstream pressure must then be reduced to 0.1 bar.
The Power Unit flue gases must be removed via an exhaust line. The exhaust system must be installed in accordance with
TRGI rules and those of the country concerned.
Primary connection (side view) (Front view)
Fig. 3.4. Fig. 3.5.
Note: the scope of supply does not include adapters or stops. Make sure connecting pipes are fitted
stress- and torsion-free.
Note: ensure that the exhaust pipe is gastight. Adhere to national/local boiler regulations.