Kingspan Temperature differential controller Installation And Operating Instructions Manual page 39

9.3.8 Interval
Display
9.3.9 Stagnation reduction
Display
742.892 | 11.50
Periodically switches the solar circuit pump on and off in order to meas-
ure the actual collector temperature. The delay between 2 switch-on
operations and the switch-on duration can be set. Applications:
• Collector types where the mechanical construction prevents the
temperature from being measured at a suitable place
• Unsuitable position of the temperature sensor on the collector
The function can be time restricted to prevent unnecessary periodic
operation at night.
Characteristic
Activation
Time window start/end
Wait time
Switch-on duration
Delays the end of the storage tank's loading phase in order to reduce, or
even to avoid, the system standstill (stagnation) times at high tem-
peratures. To do this, the pump is stopped repeatedly, and only briefly
switched on again at high collector temperatures. Since the efficiency
drops heavily at high collector temperatures, the loading takes longer
and possible stagnation occurs later.
Note
This function cannot be activated in systems with swimming
pools.
Characteristic
Activation
min. max.
on, oFF
00:00 23:59
1 min 999 min
3 s 999 s
min. max.
on, oFF
EN
Factory
setting
oFF
08:00/19:00
15 min
5 s
Factory
setting
oFF
39