Funct input EX21 module 1 (7342) , Funct input EX21 module
2 (7417) and Funct input EX21 module 3 (7492)
None: No function.
Limit thermostat HC: If the extension module is used for the heating
circuit, an external temperature monitor can be install in at the inlet
EX21 (e.g. for underfloor heating). If the temperature monitor is
activated: - The mixer is closed and the pump is switched off - A fault
message is issued (temperature monitor HKx) - The status "Monitor
activated is generated. If the function of the expansion module is set on
heating circuit 1-3 and the function of input EX21 for the same module is
set on the temperature monitor (HK), in this case, the status at input
EX21 is taken into consideration internally for controlling the relay
outputs (pump and mixer open/closed).
Funct output UX21 module 1 (7348), Funct output UX22
module 1 (7355), Funct output UX21 module 2 (7423) und Funct
output UX22 module 2 (7430), Funct output UX21 module 3 (7498)
and Funct output UX22 module 3 (7505)
None: No function.
Boiler pump Q1: The connected pump is used for recirculation of the
boiler water.
DHW pump Q3: Actuator for DHW storage tank.
DHW interm circ pump Q33: Actuation of a charge pump for domestic
hot water storage with external heat exchanger.
Heat circuit pump HC1 Q2/Heat circuit pump HC2 Q6/Heat circuit pump
HC3 Q20: Activation of the pump heating circuits HC1-HC3.
Collector pump Q5: Actuation of a circulating pump when a solar
collector is used.
Solar pump ext exch K9: The solar circuit pump for the external heat
exchanger K9 must be set here.
Solar pump buffer K8: If several exchangers are connected, the buffer
storage tank must be set at the respective relay output and the type of
solar regulating unit must be defined under prog.no.5840.
Solar pump swi pool K18: If several exchangers are connected, the
swimming pool must be set at the respective output and the type of the
solar regulating unit must be defined in prog.no. 5840.
Sign logic out UX21 module1 (7349), Sign logic out UX22
module1 (7356), Sign logic out UX21 module2 (7424), Sign logic
out UX22 module2 (7431), Sign logic out UX21 module3 (7499),
Sign logic out UX22 module3 (7506)
Output UX21/22 can be inverted when output if the output signal is
configured as PWM. This means that variable-speed pumps can also be
actuated using inverted signal logic
Signal output UX21 module 1 (7350), Sign logic out UX22
module1 (7357), Signal output UX21 module 2 (7425) and Signal
output UX22 module 2 (7432), Signal output UX21 module 3
(7500) und Signal output UX22 module 3 (7507)
Specifies whether the signal is to be output as a 0 - 10 V signal or pulse-
width modulated (PWM) signal.
9.2.23 Input/output test
Input/output tests
Tests for checking the function of connected components.
9.2.24 Status
State
With this function the status of the selected system can be requested.
9 Settings
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