
bar
4
7
6
5
2
3
P1
C
A
B
D
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
P1
P2
P3
D
C
A
E
E
F
B
Scheme 5.
- General scheme of closed central heating system with 1 accumulation (buffer) tank and
in front behin accumulation (buffer) tank
DHW preparation
/
d
.
*
NOTE:
- According to this scheme is possible to perform version for open central heating system
(see point 6.0, Connection to the central heating system).
P1 - Pump P1 (boiler pump)
P2 - Pump P2 (DHW pump)
P3 - 3-way diverter valve P3
A - Accumulation (buffer) tank sensor (upper)
B - Accumulation (buffer) sensor (lower)
C - DHW sensor (domestic hot water)
D - Outdoor temperature sensor
E - Flue gas temperature sensor
F - Main flow sensor
J - Return flow temperature sensor
*
*
*
B
io
T
e
c P
lu
s
05:08
OFF
0
0.0%
0.0%
xx°C
x%
xx°C
xx°C
xx°C
xx°C
xx °C
25.0°C
20.0-0.0°C
20.0°C
-°C
xx°C
1
J
J
IMPORTANT! This way of connecting DHW tank is neccesary if in some
part of the year we only want to use pellets for heat DHW tank.
P2
M
P
P3
1 - Boiler "BioTec Plus".
2 - "CAS" accumulation (buffer) tank
3 - Return flow protection (3-way mixing valve with actuator
4 - Expansion vessel for closed systems (min. 10% of the total
volume of installation)
5 - Sanitary water tank
(SKB-Digi/LKB-Digi/TB/STB)
6 - Safety airvent unit
7 - Thermal safety valve
*
*
*
*
*
*
Connected to the boiler electronics
Not included in delivery of boiler BioTec Plus (need additional order)
Terminal Block
Mixing valve
acturator
General connection schemes
Technical instructions
BioTec Plus
34