PAW FC4.13, Manual For Specialised Craftsman

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21
en
Blocking protection
Main menu / Store loading / Blocking protection
Adjustment channel Description
Adjustment range /
selection Factory
setting
Blocking protection Activation of the function Yes, No No
The Blocking protection function can be used for protecting the pumps against
blocking after a standstill. Blocking protection is executed daily at 12 o'clock.
Depending on the system and the functions activated, it will energise the primary,
secondary and circulation pump as well as the valves.
Switch-on time is 4 s. The circulation pump runs fi rst. Then, the primary pump starts.
Then, if connected, the valves are switched on one after another. DHW heating and
circulation take priority over the blocking protection. In the case of a draw-off, the
blocking protection for the corresponding pumps is aborted.
3.3.1 Afterheating
Main menu / Afterheating
Adjustment
channel
Description
Adjustment range /
selection Factory
setting
AH sensor Afterheating sensor selection S6, S7, S9 S9
∆
T on Switch-on temperature difference 5 … 30 K 10 K
∆
T off Switch-off temperature difference 3 … 15 K 5 K
AH mode Afterheating mode selection Source, Source and sink Source
back
In the SUS Sys 1 system, the afterheating function is uased for heating the second-
ary store to the temperature (T-HW set +
∆
T off), if the temperature at the AH
sensor falls below T-HW set.
Permanent afterheating
If the system SUS Sys2 or Sys3 and the AH mode Source have been selected, the
afterheating will heat the primary store up to the temperature (T-HW set +
∆
T
off), as soon as the temperature at sensor S3 falls below (T-HW set +
∆
T on).
Demand-dependent afterheating
If the system SUS Sys2 or Sys3 and the AH mode Source and sink have been select-
ed, the afterheating will heat the primary store up to the temperature (T-HW set +
∆
T off), if the temperature at sensor S3 falls below (T-HW set +
∆
T on) and if the
temperature at S7 falls below T-HW.
Note:
If the SUS Sys3 variant has been selected, the plate heat exchanger will be
supplied with heat directly by a boiler.
Select the AH mode Source and sink in order prevent the boiler from
being activated with a delay.
3.4 Circulation
The Circulation function can be used for controlling a circulation pump.
For the circulation function, 2 different modes are available:
Circulation modes:
•
Continuous operation
•
Thermal
With the Timer function, time frames can be adjusted in which a certain circulation
type is active.