Siemens Building Technologies
Basic Documentation RVL470
CE1P2522E / 30.03.2000
Landis & Staefa Division
Function block "Service functions and general settings"
45/68
13.3.2. Relay test
Each of the three output relays can be energized. Depending on the type of plant, the
following codings apply:
Entry
Plants with a valve (plant types
no. 1, 3, 4 and 6)
Plants with a burner (plant types
no. 2 and 5)
0
Normal operation
Normal operation
1
All contacts open
All contacts open
2
Heating circuit valve fully OPEN (Y1)
Burner stage 1 ON (K4)
3
Heating circuit valve fully CLOSED (Y2)
Burner stages 1 and 2 ON (K5)
4
Heating circuit pump/circulating pump
ON (M1)
Heating circuit pump/circulating
pump ON (M1)
There are four choices to terminate the relay test:
•
Entry of 0 on the operating line
•
Leaving the setting level by pressing button
or
•
Leaving the setting level by pressing the Info button or any of the operating mode
buttons
•
Automatically after 30 minutes
13.3.3. Sensor test
The connected sensors can be checked on operating line 163. In addition, if available,
the current setpoints and limit values are displayed.
In the display, the current setpoints are identified by SET, the actual values by ACTUAL
(also refer to section "19.1.1.2. Display").
The six temperatures can be called up by entering 0...5:
Entry Display SET
Display ACTUAL
0
No display
Actual value of outside sensor at
terminal B9.
If the outside temperature is de-
livered via the data bus, the dis-
play shows ---
1
Setpoint of flow / boiler temperature With
the plant types using a boiler, the switch-off
point is displayed.
If there is no demand for heat, the display
shows ---
Actual value of flow / boiler tem-
perature sensor at terminal B1
2
Setpoint of room temperature.
With the plant types with no heating circuit,
no room temperature setpoint is displayed
Actual value of room temperature
sensor at terminal B5
3
Setpoint of room temperature.
With the plant types with no heating circuit,
no room temperature setpoint is displayed
Actual value of room unit sensor
at terminal A6
4
Limit value of return temperature.
With plant types no. 1, 4 and 5, the mini-
mum limit value of the return temperature is
displayed; with plant types no. 3 and 6, the
maximum limit value of the return tem-
perature.
If no return temperature limitation is acti-
vated, the display shows ---
Actual value of primary return
temperature sensor at terminal
B7.
If the return temperature is deliv-
ered via LPB, the display shows -
--
5
Limit value of return temperature differential.
If no DRT limitation is activated, the display
shows ---
Actual value of secondary return
temperature sensor at terminal
B71
Faults in the sensor measuring circuits are displayed as follows:
= short-circuit (thermostat: contact closed)
-- -- -- = open-circuit (thermostat: contact open)
