andrews MAXXflo EVO CWH 90/302 Installation And Maintenance Manual page 57

6.1.1.4. CONDENSATE PIPEwORK AND SyPHON TRAP
Inspect all joints in the condensate pipework for leaks
The pipes themselves should be clear, flexible and no signs of any cracking should be visible. Investigate any white
coloured areas anywhere on the condense pipe work.
The lower bowl of the syphon should be unscrewed, examined and cleaned. Check its connection to the heat
exchanger and pipework for leaks
6.1.1.5. GAS RATE & COMbuSTION
The gas rate and combustion flue analysis must be carried out when the heater is operating at maximum loading.
See Section 5.2 for full details on how to check and adjust the CO
2
To check, re-establish gas and electricity supply and then operate each heat engine for at least 5 minutes. If adjust-
ment is required remove the cover over the throttle screw and turn anti-clockwise to increase CO or clockwise to
2
decrease.
CO
CO
_
2
2
+
MAKE ADJuSTMENTS IN 1/4 TuRN STAGES AND wAIT ONE MINuTE bETwEEN EACH
ADJuSTMENT
Maintenance 57 MAXXflo EVO