Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
6 Operation
83309302 1/2018-05 La
74-196
6.6.2 WTC
6.6.2.1 Boiler controller
WTC-G ...
Boiler
controller
Parameters
Setting
2.1.1
Burner rapid cycle in-
terlock
heating mode
After switching off the burner, the condensing unit remains locked in heating mode
for the set time.
The burner rapid cycle interlock prevents the burner from starting too often.
2.1.2
Maximum load
heating mode
Upper load limit (combustion heat rating) in heating mode.
The output is expressed as a percentage of the rated output of the condensing
unit.
2.1.3
Maximum load
DHW mode
Upper load limit (combustion heat rating) in DHW mode.
The output is expressed as a percentage of the rated output of the condensing
unit.
2.1.4
Time forced partial
load capacity
heating mode
At heat demand from the heating circuit, the heating load is restricted to partial
load for the duration set. When this time has elapsed, load control is released.
Forced partial load is not required for DHW loading.
2.1.5
Controller switch dif-
ferential
operating mode
Switch differential boiler controller for heating mode.
If the current flow temperature exceeds the flow setpoint temperature by the
switch differential set, the burner shuts down.
2.1.6
Controller switch dif-
ferential
DHW
Switch differential boiler controller for DHW mode.
If the current flow temperature exceeds the flow setpoint temperature by the
switch differential set, the burner shuts down.
