8
8
1.3.2 Burners
The water heaters are suitable for both gas-fired and oil-
fired burners.
The water heaters have been examined and tested with
the following front-mounted burners from Riello:
The burners for the COF 700 heaters must be fitted with
a special fire tube in view of the higher temperatures in
the heater’s combustion chamber. The manufacturer
has already fitted the special fire tube to a burner
supplied direct with the water heater. Otherwise the spe-
cial fire tube must be retrofitted. Please consult your
supplier on this matter.
The heaters are also suitable for front-mounted burners
from other manufacturers, provided that the following
conditions are met:
- The front-mounted burners must be EC approved,
- The flame length of the front-mounted burner must
be less than the diameter of the heater’s combustion
chamber. This diameter is 510 mm for all heaters,
- For the COF 455 and COF 700 a starting load of 120
kW at maximum (according to EN 676) must be
set. Consult to this end the instruction manual of the
front-mounted burner used,
- The air-proving switch must be set in such a way that
it cuts out before the CO contents of the flue gas
reaches a value of 2000 ppm.
- The maximum burner pressure of the heater
amounts to 25 Pa across the entire range. The
selected burner must be able to supply at least this
pressure.
Before installing and commissioning the selected burner,
you must consult the front-mounted burner’s instruction
manual.
GAS-FIRED BURNER
OIL-FIRED BURNER
MODEL
TYPE
MODEL
TYPE
COF 199
BS 2
912 T1
RG 2
377 T1
COF 245
BS 2
912 T1
RG 2
377 T1
COF 315
BS 3
913 T1
RG 3
393 T1
COF 385
BS 3
913 T1
RG 3
393 T1
COF 455
BS 3
913 T1
RG 3
393 T1
COF 700
BS 3
913 T1
RG 4S
396 T1
HEATER
