Fitting The Control Unit To The Boiler - Viessmann VITOCROSSAL Series Installation Instructions Manual

Fitting the control unit to the boiler

!
Please note
Hot components can damage electrical cables.
Never route electrical cables near hot compo-
nents. Observe the maximum permissible tem-
peratures for the cables.
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. Make the
burner electrical connection; see page 33 34
onwards.
4. Route the lead for the cylinder and flue gas tem-
perature sensor to the back along the boiler top rail
(use cable clamps). Connect the flue gas tempera-
ture sensor to the flue outlet; see the following
chapter.
2x
2.
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and dam-
age to the appliance.
Route extra low voltage (ELV) leads and cables
∼
> 42 V/230 V separately.
!
Please note
Hot components can damage electrical cables.
Never route electrical cables near hot compo-
nents. Use the cable retainers on the boiler
frame.
25