Multi-Functional Inputs; Input H1 - Siemens RVA63.242 User Manual

Benefits
Description
Important
Setting
Effect
Note
140/218
Siemens Building Technologies
Landis & Staefa Division

Multi-functional inputs

4.78 Input H1

Remote control of space heating and d.h.w.
Changeover of operating mode via telephone (e.g. in holiday houses).
Contact H1 is a multi-functional signal input that, depending on the selected setting,
can be used to provide a number of functions through opening or closing its contact or
by accepting a DC 0...10 V signal.
The relay contacts must be suited for use with extra low voltage (gold-plated)
Setting range
0...4
With this setting, the function of terminal H1 can be changed. This has different effects
on the control as soon as a potential-free contact or a DC 0...10 V signal is connected
to terminal H1.
0 Changeover of operating mode HC, d.h.w. (remote telephone switch)
The operating mode of all heating circuits and of the d.h.w. circuit changes when
the contact is closed.
1 Changeover of operating mode HC (remote telephone switch)
The operating mode of all heating circuits changes when contact is closed. The
d.h.w. circuit remains unchanged.
2 Minimum flow temperature setpoint (TVHw)
The set "Minimum flow temperature setpoint contact H" of setting line 171 is
activated when the contact is closed.
3 Heat demand DC 0...10 V
Handling of an analog voltage signal.
4 Heat demand DC 0...10 V
Handling of an analog voltage signal.
With all settings (exception setting 4) several controllers of other manufacture can be
connected in parallel to input H1. The function will be activated when one or several
contacts close(s), depending on the selected setting.
When using terminal H1 as a voltage input (setting 4), it is not possible to connect
several signals in parallel.
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
Unit
Increment
Factory setting
0
CE1P2373E
26.03.2001