Service Parameters - Compit SOLARCOMP 911 Installation And Operating Instructions Manual

Service Parameters

P1 pump minimum speed. Appropriate parameter value should be
selected to ensure stable operation of the pump (Setting range 10 to
100%, step 1%, default setting: 50%).
Maximum temperature T1 exceeding of which starts P1 pump. This
function protects the collector from overheating. When minimum value is
selected, the function is disabled – OFF message will display. (Setting
range 0 to 199°C, step 1°C, default setting: 110°C).
Maximum temperature T1 exceeding of which switches off the whole
system. When minimum value is selected, the function is disabled – OFF
message will display. (Setting range 1 to 199°C, step 1°C, default setting
130°C).
Solar panel minimum temperature T1. If the temperature drops below this
value, tank loading will stop. Enabling this function prevents frequent
solar pump switch-offs at low solar panel temperature. When minimum
value is selected, this function is disabled and the controller will display
OFF message. (Setting range 1 to 199°C, step 1°C, default setting: OFF).
Tank maximum temperature exceeding of which stops the loading
completely (Setting range 20 to 99°C, step 1°C, default setting: 85°C).
Serpentine collector function. By analysing changes in the collector
temperatures, the controller causes the solar pump to run temporarily for
the time set in parameter FKM. This allows for measuring collector's
current temperature and earlier activation of the tank heating or collector
overheat protection. (Setting range: OFF, 30 to 200 sec, step 5 sec,
default setting: OFF)
Solar panel frost protection. This parameter determines the collector
temperature below which solar pump will start in order to prevent the fluid
from freezing or thickening. If the tank temperature (T2) drops below 4°C,
the controller will switch off the solar panel frost protection function. When
maximum value is selected, the function is disabled and the controller will
display OFF message.
default setting: OFF).
Note: As the collector frost protection function absorbs heat from
the tank, it can be used in locations where temperature conditions
leading to solar panel freeze occur for a maximum of a few days a
year.
Regular tank sterilization function (LEGIONELLA). This parameter
determines the tank set temperature when this function is on. First
sterilization takes place 2 days after the power supply is connected and
then every 7 days. (Setting range 60 to 80°C, step 1°C, default setting:
OFF).
T1 sensor calibration (Setting range -9,9 to 9,9°C, step 0.1°C, default
setting: 0°C).
18
(Setting range: -10 to +10, OFF, step 0.1°C,
SOLARCOMP 911 model u6.x, Rev. 2
VARIANT no. 3 – tank loaded from the solar panel plus tank extra
heating option.
Fig. 5 Controller display for Variant no. 3
Tank loading
If the temperature difference between the solar panel and the tank (T1-T2) exceeds
, the controller will switch on the tank loading pump (pump symbol displayed) at full
speed. If the temperature difference drops below the set parameter, the controller will
reduce the pump's speed. If, despite the reduced speed, T1-T2 temperature difference
drops below , the pump will be switched off. It can be switched on again only after
the temperature difference (T1-T2) exceeds
The loading of the tank stops when tank temperature T3 exceeds
temperature difference between the panel and the tank (T1-T2) is big enough for the pump
to run.
Extra heating of the tank – heating coil on
The controller allows for activating another heat source (heating coil) for DHW. The
coil (or another heat source) is switched on when temperature T3 drops below
1°C, an it is switched off when T3 exceeds
minimum useful temperature of DHW irrespective of the energy supplied by the solar
system. The coil is activated only if the solar pump is not working. NOTE! If HOLIDAY
MODE is selected in this variant, the operation of the coil is blocked.
Basic settings
Set temperature of DHW tank. If the tank temperature (T2 or T3)
exceeds this value, the loading stops.
T1-T2 difference; when exceeded, the tank loading pump is switched
on.
If T1-T2 difference drops below this value, the tank loading pump will
switch off.
Parameter defining the threshold temperature up to which the coil is
to remain switched on.
Enabling of a sound alarm.
0 – sound alarm disabled, 1 – sound alarm enabled.
SOLARCOMP 911Operating Instructions model u6.x, Rev. 2
.
- even if the
+ 1°C. This function maintains a
11
-