19
Instructions for installation and servicing ecoTEC
4.8 Gas
connection
Note
With the spacer frame (Art. No 308 650), the
pipes can be laid in front of the wall upwards
behind the appliance. The distance of the appli-
ance from the wall thus increases by 65 mm.
Danger!
The gas installation may only be established by
an authorised technician.
The legal directives and the local regulations
for gas supply companies must be observed.
Caution!
Ensure a stress-relief assembly of the gas pipes
to avoid leakages!
Caution!
The gas regulating block may be tested for leak-
age only with a maximum pressure of 150 mbar!
Higher testing pressures can damage the gas
fitting.
Caution!
When making final connection to the boiler, if
using soldered fittings, extra care should be
taken to avoid damage to isolation valves
through heat transfer.
2
6
7
3
5
4
1
Fig. 4.5 Fitting the gas connection (example ecoTEC plus, 800
series)
• Insert the union nut (
2
) and the pinching ring (
3
) on
the gas connection pipe (
1
) to the heater.
• Insert the union nut (
6
) and the pinching ring (
5
) on
the conduit arc provided with ecoTEC plus appliances
(
7
).
• Insert the maintenance tap (
4
) until the stopper on
the gas connection pipe and the conduit arc until the
stopper in the maintenance tap. Tighten both union
nuts in this position of the maintenance tap.
• The diameter of the conduit (
7
) is 15 mm. Connect a
gas supply pipe of not less than 15 mm diameter to the
copper tail.
Note
Ensure the gas supply pipework is adequately
sized so that a 20 mbar gas pressure is availa-
ble at the boiler inlet at full flow rate.
• Tighten all connections.
• Check the gas connection with leak indicator spray for
leakage.
4.9
Cold water mains inlet and hot water outlet
(ecoTEC plus 800 and pro only)
Caution!
When making final connection to the boiler, if
using soldered fittings, extra care should be
taken to avoid damage to isolation valves
through heat transfer.
1
2
3
4
5
6
7
Fig. 4.6 Installing the hot and cold water connection (ecoTEC
plus, 800 series)
Boiler installation sequence 4
Содержание ecoTEC pro 28
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