Technical data

Initial start-up

Further step-by-step instructions

Checking the heating circuit allocation (Vitocontrol-S, VD2/CT3/CM2

)

Check whether the label for heating

circuit allocation has been affixed to

the corresponding field of the

programming unit.

Press the corresponding button

before commencing any adjustments.

Changing the display language selection (Vitocontrol-S, VD2/CT3/CM2)

1. Press .

2. Select the required language

with .

3. Confirm with .

Checking the fixed high limit (Vitotronic 100)

Hold down the test button (TÜV)

during this test (in the h position); a

minimum supply rate must be present.

The minimum boiler flow rate should be

10% of the boiler flow rate at rated

output.

Reduce the heat consumption as far as

possible. The adjustable high limit R is

now bypassed.

The burner remains switched ON until

the boiler water temperature has

reached the safety temperature and the

fixed high limit (FHL) has switched

OFF.

After the burner has been shut down

by the fixed high limit,

Release TÜV button , the display will

show fault D4.

Wait until the boiler water

temperature has fallen 15 to 20˚C /

25 to 35˚F below the set safety

temperature, then reset the fixed high

limit by pressing button E; fault D4

will clear from the display.

5351 340 v1.4

Boiler temperature

Outside temperature