45
71.07144.01 - EN
INSTRUCTIONS FOR FITTERS
26. CONNECTING THE EXTERNAL PROBE
The wiring harness leaving the control board includes to RED wires fitted with faston covers. Connect the external probe
to these two wires.
With the external probe connected it is possible to change the curve “
kt
” (Graph 1) by means of the
+/-
buttons.
TM
= Delivery temperature range
Te
= External temperature
Chart 2
0505_3002
TM
Te
“kt” curves
27. NOTES FOR INSTALLATIONS WITH SEPARATE OUTLETS
CG_2139 / 0905_2704
In special cases, installations with separate outlets can generate vibrations that may cause the fumes pressure switch to
trip (fault E03 on the boiler display).
To solve this problems, two slots closed with pre-punched holes (Ref.
A
and
B
) have been prepared on the fumes outlet.
These can be easily removed by the Qualified Technical Assistance Service without having to remove the outlet.
Remove knock-out
A
(Detail
1
) and check the appliance works correctly.
If not, remove knock-out
B
(Detail
2
) as well.
