andrews MAXXflo EVO CWH 90/302, Руководство по установке и обслуживанию

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Commissioning 47 MAXXflo EVO
CAuTION
Please ensure that the cork gasket between the fan and the venturi is correctly
placed before fixing with the two venturi screws. Place a screw through the venturi to hold the
gasket in place when refitting to fan (see illustration below)
• Re-secure the venturi to the gas valve with 3 screws, ensuring that the rubber seal and orifice remains in
place on the gas valve
• Initially turn the throttle adjustment screw according to the table below:
• Follow the commissioning procedure in section 5.2 from page 35 with the exception that the CO
2
combus -
tion figure should now be as listed in the table above for LPG (G31)
It should not be necessary to turn the throttle screw more than two turns away from the initial
adjustment setting to achieve ignition. If this is the case, ensure that the components are refitted
correctly and also be aware that the gas carrying pipes may need purging before gas is available
for ignition at the burner.
• Allow one minute between adjustments, and do not move the adjuster more than 1/4 turn at any one time
• Replace the cover over the throttle adjustment screw, when adjustment is complete
• Repeat process above for the second heat engine
• Affix the new LPG serial number data label supplied with the heater over the top of the existing natural
gas data plate
• Fit LPG warning label to heater cover.
Throttle
adjustment
screw
CO
2
_
+
CO
2
Model MAXXflo EVO 90 MAXXflo EVO 120
LPG Orifice size 5.2mm 5.55mm
Initial Adjustment
G20 to G31
2.0 turns
anti-clockwise
0.5 turns
anti-clockwise
CO
2
Combustion
Figure - LPG (G31)
10%
+/- 0.2%
9.5%
+/- 0.2%
Fix new data plate
over original