Installation Instructions

Siemens Building Technologies / HVAC Products 74 319 0173 0 b G1637 14.02.2002 4/12
Settings to be made on the «Heating Engineer's» level
Press buttons and simultaneously until operating line appears. This makes the "Heating Engineer's"
level accessible for settings.
Then, the individual operating lines can be selected with the
and buttons and the values adjusted with the
and buttons.
Line Function, display Default Range Setting Explanations, notes and tips
Device address 1 1...10 .............. Colon also shows the communication status:
• Colon flashes at regular intervals = communication in
progress
• Colon not present or does not flash = ready for
communication
Device identification Display function xx yyyy
xx ........ = device identification number
.... yyyy = software version number
Programming lock
operating lines
0 0 / 1 ............. 0 = no operating lock
1 = All operating lines are locked against readjustment.
Temporary cancellation of operating lock:
Press buttons
and until " " ap-
pears. Readjustments can now be made until the cover is
closed again.
Permanent cancellation of operating lock:
First, set temporary cancellation of operating lock. Then,
set operating line
to 0.
Function of input
(D3/D4)
1 1 / 2 / 3 / ............... 1 = external sensor: The display also shows the temperature
measured with it (
= no sensor connected, function
inactive).
2* = external switch: Changeover to reduced temperature;
the display also shows the current status of the switch
(
= contact closed, = contact open).
3 = external switch: Changeover to frost protection temperatu-
re; d.h.w. heating is switched off; the display also shows
the current status of the switch (
= contacat closed,
= contact open).
= setting not permitted
* not possible with analog heating controllers
Operating action of
external switch (S1)
/ ............... = the function selected on operating line (2 or 3)
is active when the contact is closed
= the function selected on operating line (2 or 3)
is active when the contact is open
Influence of external
room sensor
(QAW44)
50 % 0...100 ............% 0 % = influence of external sensor is 0 %
(influence of internal sensor is 100 %)
50 % = influence of external sensor is 50 %
(influence of internal sensor is 50 %)
100 % = influence of external sensor is 100 %
(influence of internal sensor of is 0 %)
Display of setpoints / ............... The room temperature setpoints can be entered and displayed
in absolute or relative figures.
= absolute; e.g. °C
= relative; e.g. + °C
Final work
1. Enter the settings in these Installation Instructions.
Keep Installation Instructions in a safe place
2. Insert Operating Instructions in the unit
Dimensions
Refer to the packaging