Metos 74/02+2CTGG, Installation And Operation Manual

Page: 31 / 76

27.2.2004 Rev. 1.0
Installation
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The appliance should be connected to the gas supply by means of metal pipes --either rigid
or flexible-- having an adequate diameter (see
"Technical specifications table" at the end
of this manual). When joining pipe fittings, never use oakum or Teflon as their residues
could get to the valve and jeopardise its operation. Instead, interpose a seal gasket suitable
for use in gas systems. Do not forget to fit a shutoff valve on the gas supply line upstream
of the appliance, which should be closed whenever the appliance is not in operation. Op-
erating pressure values are shown on the rating plate and in
"Table 1: gas categories and
pressure values" above.
After connecting the appliance to the gas system, check for leaks at joints and pipe fit-
tings; to do so, use soapy water or a specific leak detector (spray).
5.11.1 Changing gas inlet connection from the right to the left (optional)
Gas inlet connection may be changed from the right side to the left side using a kit which
includes the following items:
• 1 Male/Female 1/2" elbow;
• Female/Female 1/2" elbow;
• Male/Male 1/2" pipe;
• kit fixing bracket.
To change the gas inlet connection from the right to the left side of the appliance, proceed
as follows:
• Fix the FF elbow to the gas ramp of the appliance;
• fix the MF elbow to the MM pipe;
• insert the pipe into the hole of the fixing bracket and fix it to the FF elbow;
• screw the bracket to the lower frame;
• proceed as usual to connect the appliance to the gas supply.
5.12 Checking the supply pressure of the gas after installation
Gas supply pressure may be measured by using a liquid (e.g., a U-tube manometer with
0.1 mbar scale resolution) or a digital manometer.