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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.257 Maximum value of heat demand DC 0...10 V
(H1)
•
Adjustable temperature range for heat demand signal via input H1
•
Can be matched to the voltage outputs of devices of other manufacture
The parameter determines which temperature the maximum voltage of the setting
“Heat demand via H1“ (operating line 870, setting 5) corresponds to.
This setting is active only if on operating line 870 (input H1) setting 5 (“Heat demand
DC 0…10 V”) has been selected.
1. Press the operating line selection buttons to select operating line 872.
2. Press the plus / minus buttons to set the required “Maximum value of the heat de-
mand signal”.
Setting range
Unit
Factory setting
5...130 °C
100
This setting defines the temperature corresponding to 10 V of the setting “Heat demand
via H1“ (operating line 870, setting 5).
Based on this temperature, the controller converts the heat demand voltage signal to a
temperature.
4.258 Operating action of the contact connected to
H1
•
The operating action of the contact can be matched to the type of output signal de-
livered by a device of other manufacture
•
More flexibility when selecting non-Siemens products (both operating actions can be
considered)
This function enables the operating action of contact H1 to be matched to the operating
action of a device of other manufacture.
Setting range
Unit
Factory setting
0...1 –
1
Entry:
0
The contact is an N.C. contact, which means that it is normally closed, and
opened only when the third party device delivers a signal.
1
The contact is an N.O. contact, which means that it is normally open, and closed
only when the third party device delivers a signal.
If input H1 is used for a heat demand signal (operating line 870, setting 5), setting “Op-
erating action of the contact connected to H1” will have no effect.
Benefit
Description
Important
Setting
Effect
Benefit
Description
Setting
Note
