2.4.3 Gas supply
▪
Only the gas supplier or an approved agent may carry out installation, alteration
and maintenance work on gas appliances in buildings and properties.
▪
Pipe work must be subject to a pre and main test and a combined load and valve
proving test relative to the pressure range intended (e.g.
DVGW-TRGI, work sheet G 600).
▪
Inform the gas supplier about the type and size of plant prior to installation.
▪
Local regulations and guidelines must be observed during installation (e. g.
DVGW-TRGI, work sheet G 600; TRF Band 1 and Band 2)..
▪
The gas supply pipe work should be suitable for the type and quality of gas and
should be designed in such a way that it is not possible for liquids to form
(e. g. condensate) Observe the vaporisation pressure and vaporisation tempera-
ture of liquid petroleum gas.
▪
Use only tested and approved sealing materials, whilst observing all process in-
formation.
▪
Re-commission the appliance when changing to a different type of gas.
▪
Carry out soundness test after each service and fault rectification.
2.5 Disposal
Dispose of all materials used in a safe and environmentally friendly way. Observe local
regulations.
Installation and operating instruction
Gas condensing boiler WTC-GB 90-A
2 Safety
83266502 • 1/2010-08 • La
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