Viessmann Series B2HA 60 Operations Instructions download pdf (Page 85)

85

Coding in the delivered condition Possible change

3E:2 Boiler circuit pump is star-

ted on "External blocking"

signal

3F:0 Boiler circuit pump stays

in control mode on "Ex-

ternal demand" signal

3F:1 Boiler circuit pump is stop-

ped on "External demand"

signal

3F:2 Boiler circuit pump is star-

ted on "External demand"

signal

4b:0

Function input lH: Room

thermostat (Vitotrol 100,

only for constant temper-

ature control units)

4b:1 External demand

4b:2 External blocking

51:0 System with low loss

header:

boiler circuit pump is al-

ways started when there

is a heat demand

51:1 System with low loss head-

er:

when there is heat de-

mand, the boiler circuit

pump will only be started if

the burner is running.

Circulation pump stops on

expiry of the run-on time.

51:2 System with heating water

buffer cylinder:

when there is heat de-

mand, the boiler circuit

pump will only be started if

the burner is running.

52:0 Without flow temperature

sensor for low loss head-

er

52:1 With flow temperature sen-

sor for low loss header (au-

tomatic recognition)

53:1

Function terminal sK of

the internal extension:

DHW circulation pump

53:0

Function terminal sK: cen-

tral fault message

53:2

Function terminal sK: ex-

ternal heating circuit pump

(heating circuit 1)

53:3

Function terminal sK: ex-

ternal circulation pump for

cylinder heating

54:0 Without solar thermal

system

54:1 With Vitosolic 100 (auto-

matic recognition)

Code 2

General/group "1"

(cont.)

5585 174 GB

Service

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