Input Sensor Bx1,2; Input H1 / H2 - Siemens Albatros 2 RVS13 Series User Manual

Input sensor BX1,2

input H1 / H2

Siemens
Building Technologies
The alarm relay signals faults, should they occur.
The relay is energized with a delay of 2 minutes.
When the fault is corrected, that is, when the error message is no longer present, the
relay will be deenergized with no delay.
If the fault cannot immediately be corrected, it is still possible to reset the alarm relay.
This is made on operating page "Faults".
2. 2nd pump speed
This function facilitates the control of a 2-speed heating circuit pump, allowing the
pump's capacity to be lowered in reduced mode (e.g. during night setback). In that
case, multifunctional relay QX is used to activate the 2nd pump speed in the following
manner:
1st speed
output Q2/Q6/Q20
Off
On
On
Off
Heating circuit pump HCP Q20
Pump heating circuit P will be activated.
· Switching program
For heating circuit P, only time program 3/P is available. For more detailed information,
refer to section "Time program".
Line no. Operating line
5930,5931 Sensor input BX1,2
None
DHW sensor B31
Collector sensor B6
Return sensor B7
DHW circulation sensor B39
Depending on the selection made, setting of the sensor input assigns appropriate extra
functions to the basic diagrams. For detailed information, refer to section "Plant
diagrams".
Function "Return sensor B7" must be predefined by the boiler manufacturer.
Line no. Operating line
5950 Function input H1
Optg mode change
HCs+DHW
Optg mode changeover HCs
Optg mode changeover HC1
Optg mode changeover HC2
Optg mode changeover HCP
Heat generation lock
Error/alarm message
minimum flow temperature
setpoint
Heat request
pressure measurement
5951 contact type input H1
NC
NO
User Manual
6 The settings in detail
2nd speed
output Q21/Q22/Q23
Off
Off
On
On
Pump state
Off
Part load
Full load
Unused / not permitted
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CE1U2357en
2014-07-30