Advertisement
1.
If the device has a switch, determine if voltage
or current output is needed.
•
For current, set the switch in the down
position (I).
•
For voltage, set the switch in the up position
(V).
NOTE:
The output setting applies to all
outputs (temperature, and setpoint).
2. If selecting voltage, set the jumper:
•
Use the top and middle pins for 0-5V.
•
Use the bottom and middle pins for 0-10V.
NOTE:
If the jumper is missing or removed,
the output voltage will default to
0-10V.
NOTE:
The factory default for displayed
temperature units is °F. To change the
display to °C, snip the wire jumper (0 Ohm
resistor R64) on the back of the PCA.
°
F
Figure 4. Changing Display to °C.
9. Snap the room unit cover to the room unit base
plate by first hooking the room unit front to the
top latches, and then rotating the cover
downward until it latches.
10. Loosen the safety set screw at the bottom of the
base one or two revolutions to lock the cover to
the base. Be careful not to loosen too far as the
screw can be completely removed from the
base.
Siemens Industry, Inc.
°
C
Electrical Box and Rough-in
Mounting, Typical
1.
If a locator is attached to the rough-in device,
remove the locator by removing the two screws
and lightly rocking the locator to pull it free.
2.
Untie the twist tie and pull about three inches
(75 mm) of the room unit cable through the hole
in the base plate.
3. Mount the room unit base plate on the wall,
noting the UP arrow:
NOTE:
If required, position the Back Plate
behind the Room Unit Base, aligning
the top and bottom mounting holes,
prior to mounting to the wall:
a. Install the two room unit mounting screws
provided, but do not tighten.
b.
Level the room unit base plate for
appearance only.
c. Tighten the two mounting screws to the
room unit base plate.
CAUTION:
Over-tightening may cause the room unit
base plate to crack or bend.
4. Continue with Drywall Mounting (No Rough-in),
Typical, Steps 6 through 8, and Sensor Set-up.
CAUTION:
To prevent equipment damage, do the
following:
If room unit is powered by AC (See Figure
9):
• 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 room unit is powered by isolated DC
(See Figure 8):
• 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.
Document No. 129-479
Installation Instructions
November 13, 2012
Page 3 of 6
Advertisement
