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ECOMAX · Edition 02.11
29
6 .6 Flue gas guide tube FGT for direct heating
When using the ECOMAX
®
burners on direct heating instal-
lations, a flue gas guide tube FGT kit is required (see page ) 49
(Flue gas guide tube FGT kit).
The flange thickness
P1
of the flue gas guide tube is 15 mm.
Plan the height of the furnace extension so that the front edge
of the recuperator is flush with the inside edge of the furnace
lining (
S1
= 0 ± 20 mm).
The FGT is to be insulated with Cerablanket or similar mate-
rial, so that no hot furnace atmosphere reaches the furnace
extension.
6 .6 .1 For ECOMAX . .C
S1
∅
A
P1
Furnace extension
Flue gas guide tube FGT
Burner
FGT external
∅
A
in mm
ECOMAX 0C
140
ECOMAX 1C
180
ECOMAX 2C
200
ECOMAX 3C
236
ECOMAX 4C
300
ECOMAX 5C
336
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