User Manual

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Siemens QAX84.1/PPS2 – Flush-mounting room unit with PPS2 interface CA2N1649en_04
Building Technologies 2015-12-23
The following display options are possible in normal operation (actual options deter-
mined by the controller).
For details refer to the application description for the controller range concerned.
Display field (ex-
amples): Description
Room temperature in °C (resolution 0.5 °C)
Room temperature in °F (resolution 1.0 °F)
Setpoint adjustment displayed in digits
(Displayed only when adjusting the relative setpoint)
Scale and digits
(Displayed only when adjusting the absolute setpoint)
Control sequence: Cooling
Control sequence: Heating
Facility to select control mode and fan speed
Fan running at fan-speed I
Facility to select control mode only
Current mode is "Auto"
1649Z06
O
N
1 2 3 4
Adr S1 S2 S3
1 ON ON OFF
2 ON OFF ON
3 ON OFF OFF
4 OFF ON ON
5 OFF ON OFF
6 OFF OFF ON
The units is fitted with DIL switches (on the rear of the
operator unit) for setting the address.
Setting is required if there is more than one room unit
connected to the same controller. All units are factory-set
to Address 1.
Switch #4 is not used.
Disposal
The device is classified as waste electronic equipment in terms of the European Di-
rective 2012/19/EU (WEEE) and should not be disposed of as unsorted municipal
waste.
The relevant national legal rules are to be adhered to.
Regarding disposal, use the systems setup for collecting electronic waste.
Observe all local and applicable laws.
Engineering notes
• The room unit receives its power from the connected controller via the PPS2 inter-
face (extra low voltage, SELV)
• Only one room unit can be connected to an RX... room controller.
• Up to 5 room units (identifiable by their address-switch settings) may be connected
to one PXC… automation station.
• The room unit must be connected to the controller with a twisted pair cable (see the
relevant installation guide). Unscreened cable may be used.
LCD panel
Address switch