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System 2
System 2 (not for AT-dependent control) consists of a
maximum of:
• Burner with 2 stages
• Heating circuit without mixer
• Water storage tank
• Domestic hot water circulation pump
(Domestic hot water return pump)
The individual functions are activated by connecting the
appropriate sensor, i.e. the domestic hot water program is
only executed when the domestic hot water temperature
sensor is connected.
Power connection
1-
Input configuration
• Domestic hot water temperature
• Boiler temperature
18
• Outdoor temperature
19
• Domestic hot water return temperature
Output configuration
• Heating circuit pump Heating circuit 1
• Burner Stage 1
5
• Burner Stage 2
4
• Domestic hot water feed pump
• Domestic hot water circulation pump
16
20
8
3
2
Boiler temperature sensor 18
Brenner
Burner
Stage 1
Stage 2
Stufe1 Stufe2
Domestic hot water temperature sensor 16
Wärmeerzeuger
Heater
Pump domestic
hot water feed
3
Service
water tank
Frischwasser
Fresh water
11
12
13
14
12
11
13
14
Unrequired sensor inputs must be closed off with a
resistor (100 ohm,enclosed).
8
7
6
5
L'
L'
L'
L'
N
N
N
8
7
6
11
Pump heating
Heating element
Heizkörper
circuit 1 8
Fußboden
Pump domestic hot
water circulation 2
Domestic hot water return
temperature sensor 20
18
19
20
15
16
17
15
16
17
18
19
20
4
3
2
1
L'
L'
L'
L
N
N
N
N
N
5
4
3
2
1
GB
External
temperature
sensor 19
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- Error Messages
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