A.O. Smith COF-245 - Manual (Page 6)

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Data subject to change INT/0508/COF/02
COF
Flue system
Gas Oil
A COF water heater should be installed according category B23.
Maximum flue length for the COF 199 till 700 is 100 metres.
Subtract three meters for each bend. When the flue system exceeds 10 metres,
a condensation drain should be installed.
Note:
• On the COF 199 & 700 units a flue adaptor ring must be installed.
• For oil-fired units a stainless steel flue system should be utilised.
• Horizontal flue runs must be installed with a fall of at least 5 mm per metre.
Water heater- and flue gas check
Before the water heater is commissioned, the items below need to be checked and/or adjusted
(also see installation manual).
For the parts numbers of components and flue ducts please refer to the “Maintenance and accessories” chapter.
Check Burner pressure Top angle nozzle (80º)
Combustion figures (brand = Delavan)
Adjust at location Burner head Burner head
Air valve Air valve
Switch point of air proving switch
Gas pressure switch (inlet gas control)