1
General safety precautions
Installation and operating instructions
8
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
1.2.6
Heating system and sanitary connection
▪ Create a heating system according to the safety requirements of
EN 12828.
▪ The plumbing connection must comply with the requirements of
EN 12897. The requirements of the following must also be ob-
served:
▪ EN 1717 – Protection against pollution of potable water installa-
tions and general requirements of devices to prevent pollution
by backflow
▪ EN 61770 – Electric appliances connected to the water mains –
Avoidance of backsiphonage and failure of hose-sets
▪ EN 806 – Specifications for installations inside buildings con-
veying water for human consumption
▪ and, in addition, the country-specific legislation.
During operation of the GCU compact with additional heat source,
the storage tank temperature may exceed 60 °C, above all when
solar energy is used.
▪ For this reason, some form of scalding protection needs to be in-
cluded when you install the system (hot water mixing device, e.g.
VTA32
).
1.2.7
Operation
▪ Do not operate the GCU compact if the protective cover is open.
▪ Only operate the GCU compact if all requirements according to
the checklist in
Summary of Contents for GCU compact Series
Page 2: ......
