Viessmann VITOCROSSAL Installation Instructions Manual page 25

Fitting the control unit to the boiler
1.
2x
Fig. 29
1. Hook the pre-assembled control unit into the holes
on the side panels.
2. Tighten the screws.
3. Guide the cable harness for the burner under the
control unit and forwards to the burner. Burner
electrical connection, see from page 33.
4. Route the lead for the cylinder and flue gas tem-
perature sensor to the back along the boiler top rail
(use cable clamps). For connection of the flue gas
temperature sensor to the flue outlet, see the fol-
lowing chapter.
(cont.)
2x
2.
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and dam-
age to the appliance.
Route LV leads and cables > 42 V/230 V
rately.
!
Please note
Hot components can damage electrical cables.
Never route electrical cables near hot compo-
nents. Use the cable retainers on the boiler
frame.
∼
sepa-
25