Seltron SGC26, Manual

Page: 32 / 228

ENG
Service settings manual 32
Table with description of parameters :
Para-
meter Function Parameter description Setting range Default
value
S2.1
PROTECTION OF MAX.
COLLECTORS TEMPERA-
TURE
When the temperature in the storage tank is higher than the set
point temperature plus hysteresis (P1.10), heating with the
collectors stops. If then the collector temperature exceeds
maximum temperature (P2.2), the solar pump switches on again
until collectors are cooled down to the maximum temperature
(P2.2) plus hysteresis (P1.18).
In case the storage tank exceeds the maximum temperature
(P2.4), the solar pump stops unconditionally.
0- NO
1- YES
1
S2.2 PUMP KICK FUNCTION
Special algorithm activates the solar pump to switch -on for short
intervals. This way you get realistic temperature of collectors.
This function is used especially with vacuum (tube) collectors.
This function is also possible with classic collectors if the sensor
is fitted outside of the collector body.
0- NO
1- YES
0
S2.3
COLLECTOR’S FROST
PROTECTION If the temperature drops bellow the set point value (P2.18), the
solar pump switches -on to prevent freezing in the collectors and
pipelines.
NOTE: This setting is suitable only for climates areas where the
temperature only occasionally drops bellow the freezing point.
0- NO
1- YES
0
S2.4
STORAGE TANK LOA-
DING PRIORITY In a system with two or more storage tanks, you set the order of
loading priority. 1- 1, 2, 3
2- 3, 2, 1
1
S2.5 STORAGE TANK LOA-
DING - OPERATION PERI-
OD
If the system is loading (for a setted time) the non priority storage
tank, the operation is temporarily stopped. This way controller
(after setted pause interval S2.6) is able to check the differential
condition for the priority storage tank and switch to the priority
storage tank loading.
5 ÷ 60 min 20
S2.6 STORAGE TANK LOA-
DING - STANDBY PERIOD This is the time in which controller waits for rise of collector
temperature, which needs to be 2 K or higher. If the rise is suffici-
ent, controller waits for the differential condition for loading the
priority storage tank to be fulfilled. If temperature rise isn't suffici-
ent, the controller starts to load first non-priority storage tank with
fulfilled differential condition.
1 ÷ 30 min
3
S2.7 RECOOLING OF STORA-
GE TANK 1 Means that storage tank 1, if heated above the set-point tempe-
rature, can be forcibly cooled down to the set-point temperature.
Cooling is achieved by means of collectors and pipe installation.
0- NO
1- YES 0
S2.8 RECOOLING OF STORA-
GE TANK 2 Means that storage tank 2, if heated above the set-point tempe-
rature, can be forcibly cooled down to the set-point temperature.
Cooling is achieved by means of collectors and pipe installation.
0- NO
1- YES 0
S2.9 RECOOLING OF STORA-
GE TANK 3 Means that storage tank 3, if heated above the set-point tempe-
rature, can be forcibly cooled down to the set-point temperature.
Cooling is achieved by means of collectors and pipe installation.
0- NO
1- YES 0
S2.10 RESPECT REQUESTED
TEMPERATURE OF STO-
RAGE TANK 1
We define whether storage tank 1 should be loaded (by means of
collectors) only to the set point temperature. 0- NO
1- YES
1
S2.11 RESPECT REQUESTED
TEMPERATURE OF STO-
RAGE TANK 2
We define whether storage tank 2 should be loaded (by means of
collectors) only to the set point temperature. 0- NO
1- YES 1
S2.12 RESPECT REQUESTED
TEMPERATURE OF STO-
RAGE TANK 3
With settings we define whether storage tank 3 should be loaded
(by means of collectors) only to the set point temperature. 0- NO
1- YES 1