Document No. 129-104
Installation Instructions
December 11, 2017
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as
design improvements are introduced. APOGEE is a registered trademark or Siemens Industry, Inc. Other product or company names mentioned herein
may be the trademarks of their respective owners. © 2017 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
USA
+ 1 847-215-1000
Your feedback is important to us. If you have
comments about this document, please send them
to
Document No. 129-104
Printed in the USA
Page 4 of 4
CAUTION:
To prevent equipment damage, do the
following:
If the room unit is powered by AC:
•
AC Supply must be type NEC Class 2
and earth grounded at the secondary
neutral.
•
Room Unit ACN (GND) must be
connected to the controller common.
•
If the controller has a floating common,
that common must be connected to the
same earth ground point as the controller
AC supply.
If the room unit is powered by isolated
DC:
•
Where power is current limited up to 300
mA, it is not required to earth ground the
controller isolated common.
•
Room Unit DC-(GND) must be connected
to the controller common.
CAUTION:
Follow manufacturer’s Installation
Instructions and Wiring Guidelines for
connecting the controller to the Room
Unit.
For Siemens Controllers:
•
APOGEE Controllers with common already
earth grounded are TXIO used on PXC
Modular, PXC Compact 36 Expansion and
P1 BIM or PTM used on MBC and RBC.
These do not require the earth ground wire
to be connected to the controller.
•
APOGEE Controllers with floating common
are PXC Compact 16/24/36, MEC, PXM,
LON TEC and PPM. These require the
earth ground wire to be connected to the
controller.
Figure 6. Typical Wiring Base.
(All terminals may not be present.)
Pin No.
Function
Units with Blank Front
1
DC+ or ACH
2
DC- or ACN (GND)
3
Temp Output
4
Humidity Output
5*
Passive Temp
6*
Passive Temp Common
Units with Display
1
DC+ or ACH
2
DC- or ACN (GND)
3
Temp Output
4
Humidity Output
5*
Passive Temp
6*
Passive Temp Common
7
Setpoint Output
8
Override
9
Override Common
* Not available on “SS” models.
NOTE:
If active temperature (0 to 5V/0 to 10V/4 to
20 mA) (Pin 3) rather than passive/resistive
temperature is used, Passive Temp Common
(Pin 6) does not need to be terminated.
The installation is now complete.
