53
en
If the Target temp. option is activated, the pump speed control logic will change.
The controller will remain at the minimum pump speed until the temperature at the
allocated sensor exceeds the adjusted target temperature.
If the temperature at the reference sensor target temperature exceeds the target
temperature by 5 K, the speed of the primary pump will be increased by 10 %. If
the temperature again increases by 5 K, the speed of the secondary pump will be
adapted, too. Each temperature increase by 5 K will lead to an alternating adaptation
of the primary and secondary pump speeds. If the temperature falls, the speed will
be reduced correspondingly.
Note
The heat exchanger is protected by a non-adjustable antifreeze function.
Still, using a bypass is recommended.
The heat exchanger is protected by a non-adjustable antifreeze function.If the
temperature at the heat exchanger sensor falls below the antifreeze temperature
(10 °C), the controller will activate the secondary pump at 100 % speed. The anti-
freeze function will use heat from the store with the highest temperature. When
all stores have reached 10 °C, the secondary pump will be switched off. If the tem-
perature at the reference sensor exceeds the antifreeze temperature by 2 K, the
secondary pump will be switched off.
The heat exchanger antifreeze function works independently from solar loading.
Note
Because of the special hydraulics in systems with 2 or 3 collector fi elds,
the target temperature option will not work properly there.
Tube collector function
Solar / Opt. functions / Add new function / Tube collector
Adjustment
channel
Description
Adjustment
range / se-
lection
Factory setting
Start
Start time frame
00:00 … 23:00
08:00
Stop
Stop time frame
00:30 … 23:30
19:00
Run
Pump runtime
5 … 600 s
30 s
Adjustment
channel
Description
Adjustment
range / se-
lection
Factory setting
Break
Standstill interval
1 … 60 min
30 min
Collector
Collector fi eld
system dependent
system depend-
ent
Stmax off
Switch-on suppression
Yes, No
Yes
Funct.
Activation / Deactivation
Activated, Deactivated,
Switch
Activated
Sensor
Switch input selection
-
-
Save func-
tion / Delete
function
Save or delete function
-
-
This function is used for improving the switch-on behaviour in systems with
non-ideal sensor positions (e.g. with some tube collectors).
This function operates within an adjusted time frame. It activates the collector cir-
cuit pump for an adjustable runtime between adjustable standstill intervals in order
to compensate for the delayed temperature measurement.
If the runtime is set to more than 10 s, the pump will run at 100 % for the fi rst
10 s of the runtime. For the remaining runtime, the pump will run at the adjusted
minimum speed.
If the collector sensor is defective or the collector is blocked, this function is sup-
pressed or switched off.
If the switch-on suppression is activated and all stores have exceeded their respec-
tive maximum temperature, the tube collector function will be suppressed.
2- and 3-collector systems
In systems with 2 or 3 collector fi elds, the tube collector function will be available
for each individual collector fi eld.
The tube collector function will remain inactive for a collector fi eld which is used
for solar loading.
Summary of Contents for DeltaSol MX
Page 6: ...6 en 1 2 4 3 5 6 Chap 2 2...
