Installing The Burner - Viessmann Vitomax HW Series Installation Instructions Manual

Connections on the flue gas side
External diameter, flue pipe
Boiler size
M70A mm
*5
M72B mm
*6
M74B mm
*7
mm
M92A *8
mm
M94B *7
mm
M96A *7
Note on condensate drain
■ Condensate will form in the flue system. Return of
this condensate must be prevented on site. This is
done by taking appropriate steps, e.g. by installing a
condensate trap.
Close the KOA condensate drain connectors when
■
not in use. They are designed for draining any con-
densate collected during the start up phase.
Fitting the sight glass
Fig. 5

Installing the burner

Preparing the burner connection
If the additionally supplied burner plate was not pre-
drilled at the factory, drill the burner fixing holes into
the burner plate and cut out the aperture for the flame
head.
Fitting the burner plate (if delivered separately)
Danger
Leaks can result in poisoning through escaping
gas.
Check unused boiler apertures and gas lines for
tightness. Reseal if required.
External 7 internal 7
*5 =
*6 External 7 internal 7
=
External 7 internal 7
*7 =
*8 External 7 internal 7 + 8 mm, for size 4 - 7 internal 7 + 10 mm
=
(cont.)
1 2 3
152 192 216
392 392 440
700 700 790
346 392 392
700 700 790
490 550 620
8 mm
+
8 mm, for size 3 - C internal 7
+
10 mm
+
4 5 6
242 272 307 346
440 490 490 550
790 890 990 990
440 490 550 620
790 890 990 990
620 700 790 890
Secure the sight glass to the connector without seal-
ant.
The use of the slide control must not skew the sight
glass.
!
Please note
Hot surfaces can lead to burns.
Only open the slider in the sight glass for brief
inspection of the flame.
Observe occupational safety. Wear protective
clothing where necessary.
For correct burner operation, safeguard the required
flame head length.
10 mm
+
7 8 9 A
392 442
550 620 620
1110 1110
–
1110 1110
990 1110
B C
–
700 700
–
–
–
13