,167$//$7,21
*$6&211(&7,216
- The gas supply diameter is 1".
- With natural gas, a gas stop valve in conformity
with gas regulation has to be installed on the boi-
ler gas supply pipe in an easily accessible loca-
tion. With propane (for the THR 5-25 model only),
the 37 mbar release mechanism that acts as a
gas cock must also be accessible. Use only
sea-
lings approved for gas.
- On high pressure mechanical testing of the gas
piping, the boiler should not be connected
(Pmax: 100 mbar).
- Always blow through gas piping before commis-
sioning the boiler (to evacuate particles created
by soldering or from threaded joints).
- After commissioning the installation, check that
the pressure test points are properly closed and
check the general leaktightness of the gas circuit
(e.g. using a foaming agent or a U-tube manome-
ter).
- The gas supply pipe to the boiler should never
cause a pressure drop of more than 1 mbar
(10 mmWG).
Example: natural gas type H G20 20 mbar for
10 metres of pipe with 4 bend pieces (1 bend pie-
ce roughly equivalent to 0.5 metres) minimum
diameter 20/22.
(/(&75,&$/&211(&7,216
Protection index IP44 (sealed model - C
33
) - IP24
(model B
23
)
Power supply cable 3 x 1.5 mm² with earth.
(QVXUHFRUUHFWSRODULW\9+]
&RQQHFWLQJ 4$& RXWVLGH VHQVRU DQG
4$$URRPVHQVRURSWLRQV
- Use the connectors supplied with the sensors.
- Wire up these connectors to the length required;
the polarity of the wires is not significant.
- Connect the sensors to the terminal block (see
fig. 25).
$GGLWLRQDOIXQFWLRQV
A modem function is only possible if a QAA70 is
connected.
The remote control is connected to the antifreeze
input (ST23) on the LGM 11.34 side and behaves as
a switch either shunting the antifreeze input or lea-
ving an open circuit across it.
&RPSO\ZLWKSURWHFWLRQFODVV,,,
Effects of the switch position:
- switch closed (short-circuit): the QAA70 is set to
standby in the LGM (the QAA70 regime indicated
is cancelled),
- switch open (open-circuit): no effect on the
QAA70 regime.
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