2
15
2. Principle of Operation
The main function of the control unit is to keep temperature in the water jacket at the preset
value. The task is realized by measuring temperature (T3) and controlling the cold air choke valve
(PP) properly. Fireplace operation temperature is defined by the
parameter (see PARAMETERS LEVEL 1).
If the fireplace temperature (T3) is higher than the
parameter the
choke valve is gradually shut off limiting air supply, and if the temperature (T3) is lower than the
parameter the choke valve is gradually opened up.
The second function is control the loading pump of the BUF container (P2). The pump P2 runs if the
fireplace temperature exceeds “
” and is above the buffer temperature (T1) by the
parameter (see see PARAMETERS LEVEL 1).
The third function is controlling the loading pump of the BUF container from the solar collector KSL
(P1). The pump of the collector P1 runs if the temperature of the collector (T2) exceeds the
temperature of the buffer (T1) by the parameter value
"<64>DeltaKSL".
The next function is to control the circulating pump (P3) of central heating system. The pump
works if the buffer temperature exceeds the
value.
<20>
“
FIREPLACE Temp.
”
<20>
“
FIREPLACE Temp.
”
<20>
“
FIREPLACE Temp.
”
BUFF ON
<61>
DeltaBUF
CH ON
Fig. 1 Basic operation configuration of the control unit
WAW-
Warm Applicable Water container (boiler)
FIREPLACE-
Water jacket fireplace
BUF-
Buffer container
KSL-
Solar collector (or another heat source)
CH-
Central heating system
T1-
Temperature sensor of the BUF buffer container
T2-
Temperature sensor of the KSL solar collector
T3-
Temperature sensor of the FIREPLACE fireplace water jacket
P1-
Pump loading the BUF from KSL
P2-
Pump loading the BUF from FIREPLACE
P3-
Circulating pump CH
PP-
Electronically controlled air damper of the fireplace
Admission
date
Realization
date
Signature
Remarks
CH
FIREPLACE
