User manual

62
Service setting manual
ENG
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.

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 421.
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.
SWITCHOVER BETWEEN TWO HEAT SOURCES:
Parallel connection
Recommended (default) setting
S1.16=0
Optional setting
S1.16=1
M
B
A
M
M
R8 = OFF
R8=ON
B
A
M
M
R8=ON
M
R8 = OFF
M
B
A
M
M
R8=ON
R8 = OFF
M
B
A
M
R8=ON
M
R8 = OFF
B
A
M
R8=ON
R8 = OFF
M
M
M
B
A
M
R8=ON
M
R8 = OFF
LEGEND:
A - liquid fuel boiler
B - solid fuel boiler or heat accumulator
- 