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Selection
Selecting the plant type:
Select the required type of plant (basic diagram number) on operating line 100 (refer to page 8). The selection activates all
functions that are required for the specific plant and shows the operating lines needed.
In addition, operating parameters 120 through 173 will be set to their default values required for the basic plant.
During the setting procedure, the basic diagram number on the display flashes. The required number must be confirmed by
pressing the + / - buttons twice for 3 seconds. Then, the basic diagram number will stop flashing.
Example:
1
2
3
4
5
6
7
8
12
0
4
Plant type
The basic plant diagram for the required type of plant and additional setting information will be provided by your local
Siemens Building Technologies / HVAC Products sales office.
Designations of relays and sensors
The relay designations used in the supplied basic diagram have the following meaning:
Relays
Function (use)
K1
Heat pump stage 1
K2
Heat pump stage 2
K3
Release of external wood-fired boiler
K4
Oil- / gas-fired boiler, stage 1
K5
Oil- / gas-fired boiler, stage 2
K6
Electric immersion heater for d.h.w.
K8
Solar collector pump or diverting valve heat exchanger 2
K¯8
Inverted K8 signal
K9
Solar bypass valve or heat exchanger pump
K¯9
Inverted K9 signal
K10
Alarm output
K11
Overtemperature protection
K¯11
Inverted K11 signal
K12
Solar collector pump or diverting valve heat exchanger 1
K13
Output K13 for free time switch program
K14
Release of external oil- / gas-fired boiler
K15
Release of external heat pump
K16
Electric immersion heater for buffer storage tank
K17
Flue gas temperature sensor function
K18
Output for solar swimming pool heating
K¯18
Inverted K18 signal
Y1
Heating circuit mixing valve OPEN
Y2
Heating circuit mixing valve CLOSED
Y3
Diverting valve d.h.w.
Y4
Heat generation lock
Y¯4
Inverted Y4 signal
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20
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Relays
Function (use)
Y7
Maintained boiler return temperature, oil / gas
OPEN
Y8
Maintained boiler return temperature, oil / gas
CLOSED
Y9
Maintained boiler return temperature, wood OPEN
Y10
Maintained boiler return temperature, wood
CLOSED
Y14
Diverting valve partial storage tank charging
Y¯14
Inverted Y14 signal
Y15
Diverting valve for return
Y¯15
Inverted Y15 signal
Q1
Boiler pump of oil- / gas-fired boiler
Q2
Heating circuit pump
Q3
D.h.w. charging pump
Q¯3
Inverted Q3 signal
Q4
D.h.w. circulating pump
Q5
Solar collector pump 1
Q9
Heat pump circulator
Q10
Pump of wood-fired boiler
Q11
Storage tank heat transfer pump
Q12
Oil / gas bypass pump
Q13
D.h.w. storage tank heat transfer pump
Q14
System pump
Q15
Pump H1
Q16
Solar collector pump 2
Q17
Additional pump Q17 for heat pump stage 2
E1
Mains input
L
Live conductor (mains connection)
N
Neutral conductor (mains connection)
Siemens Building Technologies / HVAC Products
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