Return Probe Resistance; Solar Configuration Resistance; Solar Collector Probe Resistance; System Pressure Switch - Immergas HERCULES SOLAR 26 1A Manual

Technical Documentation
Low voltage circuit
Button
Button "A"
Button "B"
Button "C"
Button "D"

System pressure switch

(S5)
Solar configuration
resistance
(R14)
Solar collector probe
resistance
(R15)

Return probe resistance

(R9)
PT1000 interface board
(A11)
External probe
(B4) (optional)
Flow probe
(B1)
STHSC ed 0710
Inputs
It sends the board a signal that allows ignition or boiler stand-by.
It sends a signal to the board that allows boiler functioning in Summer
( ) or Winter ( ).
It sends a signal to the board that allows to activate the COMFORT or SAVING function.
It sends the board a signal that allows to release the integrated P.C.B. after the intervention
of an anomaly or boiler block, signalled with the relative error code .
In the P.C.B. programming mode it allows to exit the configuration menu.
It sends the P.C.B. a signal that allows to enter the configuration menu and to confirm the
adjustments made.
When the pressure of the boiler circuit is below 0.3 bar it determines
burner switch-off.
It is a resistance that configures the board for use with the HER-
CULES Solar 26 1A boiler. It must always be present.
It is a resistance that simulates the presence of the solar collector
probe. It must be removed before inserting the PT1000 collector
probe.
It is a resistance that simulates the presence of the system return
probe. It must always be present.
It is the board where the PT1000 probes of the solar collector and the solar storage tank
unit are connected. It is connected to the boiler P.C.B.
Detects the external temperature and allows the integrated P.C.B. to
vary the flow temperature depending on the external temperature.
It is a resistance that can be varied proportionally to the external
temperature.
It is a resistance variable in an inversely proportionally manner to the
temperature of the water. It is positioned at the outlet of the main
exchanger, allowing the integrated P.C.B. to detect the temperature
of the flow water in the primary circuit.
Its breakage (signalled by relative anomaly) blocks burner functioning
both in central heating and domestic hot water modes.
It is also used as a flow limit thermostat (90 °C).
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Technical Documentation
Open =
No pressure
Closed =
Pressure OK
Factor
2.2 kΩ 1/4 W
Factor
2.2 kΩ 1/4 W
Factor
2.2 kΩ 1/4 W
PTC probe
1 kΩ 25 °C
NTC probe
10 kΩ 25 °C
HERCULES Solar 26 1A