Connecting an external supply temperature sensor
(service function 7.d) .......................................................... 63
Constant mode
(service function 9.A) .......................................................... 64
Current fan speed
(service function 9.b) .......................................................... 64
Current heat demand
(service function C.d) .......................................................... 64
Current heating output
(service function 9.C) .......................................................... 64
Current turbine flow rate (only ZWB..-3A)
(service function 6.d) .......................................................... 62
DHW heating delay (solar module)
(service function b.F) .......................................................... 64
DHW output
(service function 1.b) .......................................................... 59
DHW temperature
(service function A.b) .......................................................... 64
Display inspection
(service function 5.F) .......................................................... 62
Fan post purge time
(service function 5.b) .......................................................... 62
GFA fault
(service function 8.d) .......................................................... 63
GFA status
(service function 8.C) .......................................................... 63
Indicator lamp for burner operation / faults
(service function 7.A) .......................................................... 62
Last fault saved
(service function 6.A) .....................................................62, 69
Maximum heating output
(service function 1.A) .......................................................... 59
Maximum supply temperature
(service function 2.b) .......................................................... 60
Metric or US customary units
(service function 0.E) .......................................................... 63
Minimum heating/DHW output
(service function 3.d) .......................................................... 61
Operating mode
(service function 2.F) .......................................................... 60
Permanent ignition
(service function 8.F) .......................................................... 64
Pump control mode for heating operation
(service function 1.E) .......................................................... 59
Pump lockout time (only ZBR..-3A)
(service function 2.A) .......................................................... 60
Pump mode (only ZBR..-3A)
(service function 1.F) .......................................................... 59
Pump post purge time (heating)
(service function 9.F) .......................................................... 64
Reset service reminder
(service function 5.A) .......................................................... 62
Restore appliance (Heatronic 3) to factory settings
(service function 8.E) .......................................................... 64
Greenstar
Set functionality of black plug (connection NZ - LZ)
(service function 5.E) ...........................................................62
Set start speed 1
(service function 9.d) ...........................................................64
Software version
(service function 8.A) ...........................................................63
Supply temperature required by outdoor reset control
(service function 6.C) ...........................................................62
Switching differential
(service function 3.C) ...........................................................61
Temperature at tank temperature sensor
(service function A.C) ...........................................................64
Turbine signal delay (only ZWB..-3A)
(service function 9.E) ...........................................................64
Voltage terminal 2
(service function 6.b) ...........................................................62
Service level
First service level ................................................................ 59
Second service level ............................................................ 63
Set functionality of black plug (connection NZ - LZ) ....................... 62
Settings
Changing sensor curve of the heating pump............................. 57
Shutdown ............................................................................... 52
Spare Parts ............................................................................. 83
Steps for inspection and maintenance......................................... 69
Summer mode......................................................................... 55
Surface temperature ................................................................ 34
Switching the appliance OFF ..................................................... 52
Switching the appliance ON ....................................................... 52
T
Technical data ................................................................... 18–25
ZBR16-3A.......................................................................... 18
ZBR21-3A.......................................................................... 19
ZBR28-3A.......................................................................... 20
ZBR35-3A.......................................................................... 21
ZBR42-3A.......................................................................... 22
ZWB28-3A... ...................................................................... 23
ZWB35-3A... ...................................................................... 24
ZWB42-3A... ...................................................................... 25
Technical specifications ...................................................... 18–25
Testing gas line ........................................................................ 45
Testing water connections......................................................... 45
Thermal disinfection................................................................. 56
Turning the space heating ON .................................................... 52
Type of gas................................................................................ 7
Type overview ........................................................................... 7
W
Water Chemistry Guidelines ...................................................... 32
Z
ZBR..-3A................................................................................. 10
ZWB..-3A................................................................................ 12
Index | 101
6 720 806 992 (2015/03)