Input H1 - Siemens RVA47.320 User Manual

Benefit
Description
Setting
Effect
Note
Important
106/166
Siemens Building Technologies
HVAC Products

Input H1

.
4.61 Input H1
•
Changeover of operating mode via telephone (e.g. in a holiday house)
•
Minimum demand for heat
•
Heat generation lock
•
Demand for heat
Terminal H1 is an input that provides different functions, depending on the selected
setting.
1. Press the operating line selection buttons to select operating line 170.
2. Press the + / - buttons to select the required function.
Setting range
0...4
With this setting, the function of terminal H1 can be changed. The selected function will
be activated when the potential-free contact connected to terminal H1 closes or when
an analog voltage signal of DC 0...10 V is transmitted.
Entry:
0 Changeover of operating mode (remote telephone switch) for heating circuit
and d.h.w.: The operating mode is changed when the contact closes
1 Changeover of operating mode (remote telephone switch) for heating circuit
only: The operating mode is changed when the contact closes
2 Minimum setpoint of flow temperature, contact H1
The "Minimum setpoint of flow temperature contact H1" set on operating line 171
will be activated when the contact closes.
3 Heat generation lock
The heat sources will be locked when the contact closes.
4 Demand for heat
The demand for heat (between 0 and 130 °C) is delivered to the heat sources in
the form of a voltage signal.
When using terminal H1 as a contact (settings 0 -3), several switches can be
connected in parallel. 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.
When 2 heat demand signals are received at the same time, one via contact H1
(settings 2 + 4) and another (LPB, d.h.w. or controller internally), the highest of them
will be selected. Exception D.h.w. cannot be boosted by another heat requisition.
The relay contacts must be suited for use with extra low voltage (gold-plated).
Basic Documentation RVA47.320
Description of the heating engineer settings
Unit
Increment
Factory setting
0
CE1P2379E
15.07.2002