Installation manual

installation manual TWIN 80 EN
23
3.6. Conversion to LPG
High voltage!
The wiring of the pump, the three-way valve, fan
and wiring of the gas control can be under a
voltage of 230 VAC.
First: Always screw the venturi adjusting screw
fully clockwise until it blocks.
Fit a flue gas analyser (CO
2
meter) in the measurement opening
of the flue tube canal concerned.
Setting Full load on Propane as follows:
Unscrew the venturi adjusting screw 1/2 turns anti-clockwise.
(A guide for the dimension from the top of the screw to the top of
the support is given in the table).
Read the CO
2
value on the flue gas analyser. If the value does
not correspond with the value for propane gas G31 (9,8% CO
2
),
carefully adjust the venturi-screw until the correct value is
obtained.
Activate the chimney sweeper function on full load.
Read the CO
2
value on the
analyser. If the value does not
correspond with the value in the
"CO
2
setting" table, carefully
adjust the venturi-screw (1). Turn
the venturi-screw anti-clockwise
to increase the CO
2
value,
clockwise to decrease
it.
Adjusting low load
Activate the chimney sweeper function on low load
If the gas control is already
properly adjusted for natural gas,
then the low load will not need to
be adjusted.
Activate the chimney sweeper
function on low load.
Check the CO
2
value at minimum
capacity for propane gas G31of about 9.2% CO
2
.
If necessary, adjust the gas regulator screw until the correct
value is obtained. Note that this setting is a critical one.
CO
2
setting full load low load
Propane (G31) 9,8 % CO
2
9,2% CO
2
(L)
rubber plug
Left unit
(r)
rubber plug
right unit