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
80-196
6.6.5.2 Control behaviour
Heating
circuits
Control
behaviour
Parameters
Setting
6.2.1
Heat-up optimisation
To ensure that the room setpoint temperature reaches the level set at the begin-
ning of the heating program, the switch-on time for the start of the heating is ad-
vanced.
Off
:
Heat-up optimisation not activated.
On
:
Heat-up optimisation activated.
6.2.2
Heat-up optimisation
Maximum advance
(1
Limits the maximum time of advancement for heat optimisation.
6.2.3
Building construction
With weather compensated control the mixed external temperature influences the
flow setpoint temperature. The influence depends on the building construction.
The better (heavier) the building construction, the slower the influence.
very light
…
very heavy
6.2.4
Room thermostat func-
tion
(1
The room thermostat switches off the heating circuit, when the room temperature
exceeds the
room setpoint temperature
+ switch differential.
Off
:
Room thermostat function not activated.
On
:
Room thermostat function activated.
On at setback
:
The room thermostat function is only activated at level
setback
.
Switch differential:
If the current room temperature exceeds the room setpoint temperature by the
switch differential, the heating circuit is switched off.
6.2.5
Room sensor influence
With room compensated control, the difference between the current room temper-
ature and the room setpoint temperature set influences the flow temperature. The
higher the value of the room sensor influence set, the more affect the difference
will have.
6.2.6
Room control I-Part
With active PI room control, an exact compensation of the room setpoint temperat-
ure is achieved.
On
:
PI room control activated.
Off
:
On:PI room control not activated.
Reset time:
The shorter the reset time, the faster a control deviation is compensated. If the time
is set too short, the controller tends to oscillate.
6.2.7
Frost protection
External temperature
If the current external temperature drops below the value set, system frost protec-
tion is activated.
(1
Factory setting depending on the heating circuit type set [ch. 12.7].