Manual Operation - Siemens RVA63.280 Basic Documentation

Benefit
Description
Boiler temperature
Room temperature
Setting
Note
Effect
Note
Display
Siemens Building Technologies
Landis & Staefa Division
1.6

Manual operation

Manual heating operation in case the control system fails.
Manual operation is an operating mode in which all required plant components must be
manually adjusted and monitored. The controller's control functions have no more
impact on the relays.
The required boiler temperature setpoint must be manually adjusted on the boiler's
control thermostat. The boiler temperature is displayed on setting line 56.
The temperature of the heating circuits can be adjusted with the mixing valve, which
must also be set to manual operation. The room temperature is still displayed on setting
line 33.
Activation: Manual operation is activated by pressing this button. It is accessible
only when the cover of the controller is open
• By pressing one of the operating mode buttons
Deactivation:
• By pressing again the manual operation button
When deactivating the function, the controller will automatically return to the operating
mode previously selected.
As soon as manual operation is activated, the following values are used for the heat
demand:
• For space heating:
Maximum limitation of flow temperature setpoint (line 107)
• For the d.h.w.:
Nominal setpoint of d.h.w. temperature (line 26) + setpoint boost of d.h.w. flow
temperature (line 126)
• For the minimum flow temperature setpoint and heat demand DC 0...10 V:
Minimum setpoint of flow temperature, contact H (line 171)
The outputs will be switched to the following states:
Output
Burner stages 1 and 2
Heating circuit pump
D.h.w. charging pump
D.h.w. diverting valve
Mixing valve outputs
The following functions are no longer active in manual operation:
maximum limitation of boiler temperature:
Basic Dokumentation RVA63.280, RVA53.280
Terminals
K4, K5
Q2, Q6
Q3
Y3
Y1 / Y2, Y5 / Y6
Status
ON
ON
ON
OFF
OFF (de-energized)
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CE1P2374E
19.04.2001