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Les langues disponibles
oPERATIoN oF SwITChoVER VALVE By SySTEMS wITh Two hEAT SoURCES
For control of switchower valve use 2-point actuator with spring return or classic 2-point
actuator with phase-return function.
Dot mark on hydraulic schemes indicates valve gate with open flow when the actuator is in
base position. It is advised to have this valve gate connected to the solid fuel boiler or heat
accumulator or to supply pipe of liquid fuel boiler by scheme 121.
With setting of parameter S5.16=1 the output R8 can operate inverted. This setting pro-
vides further options of switchover valve connection, as shown on pictures below.
s
witchover between two heat soUrces
Parallel connection
Recommended (default) setting
S5.16=0
M
A
M
B
M
B
M
LEGEND:
A - liquid fuel boiler
B
B - solid fuel boiler or heat accumulator
M
- valve gate with open flow when the actuator is in base position
Service setting manual
:
R8 = OFF
B
M
R8 = ON
M
R8 = OFF
A
M
R8 = ON
M
R8 = OFF
R8 = OFF
A
M
R8 = ON
M
R8 = OFF
A
M
62
optional setting
S5.16=1
M
A
M
B
B
M
R8 = ON
B
M
R8 = OFF
M
R8 = ON
A
M
R8 = OFF
M
R8 = ON
A
M
R8 = OFF
M
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